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Formaldezorb Filter Advantages Over Pure Carbon in VOC Canisters and Furnace Filters

by Barbara 10. June 2016 06:11

Question about Amaircare VOC Canister Filter 8 Inch For Amaircare 2500 Air Cleanersand the Safe Home Duo Air Purify Furnace Filter 20x25x4 In.

Questions: "What advantages are there in adding the Amaircare VOC canister filter to my Amaircare 2500? And why would I use a Safe Home Duo filter with Formaldezorb as my HVAC filter? We are very sensitive to chemicals. Thanks. Mary.

Answer: Both filters use formaldezorb with carbon to capture odors as well as formaldehyde.

Amaircare VOC Canister filters are available for all sizes of Amaircare portable air purifiers as well as many of the industrial ones and HVAC units .Amaircare’s standard VOC Canisters capture approximately 20% aldehydes (including formaldehyde) in a single pass. Amaircare’s Formaldezorb VOC Canister is a proprietary specialty activated solid carbon that is chemically modified on the surface with a compound specifically targeting formaldehyde and other aldehydes. Formaldehyde being the most reactive aldehyde, binds to the surface of the modified carbon in a highly effective manner. Based on this specially formulated process, Amaircare Formaldezorb VOC Canisters remove 60% to 75% of formaldehyde in a single pass. The high performance removal of the Formaldezorb VOC Canister is specified by healthcare professionals in the USA and Canada where exposure to formaldehyde is a current and growing health concern since recognition by the United States Environmental Protection Agency (EPA) as a known carcinogen.

Safe Home Duo HVAC filters come in 1 inch and 4 inch sizes. The one inch sizes have an internal metal frame with self-sealing edges. The four inch ones use pleated filter media: the outside of the filter has sealing strips. Again the idea is to have no unfiltered air go around the filter.

Polyester media filter with chemical filter uses 300 grams/sq. ft. of 50/50 activated carbon and potassium permanganate based FormaldaSorb™ to trap gases, odors and chemicals including formaldehyde, benzene, toluene, ammonia and ozone. No other filters are as effective at removing dust mites, mold spores, pollen, odors, cleaning chemicals, ozone, paint fumes, and common gasses like formaldehyde which triggers asthma and allergies.  Made in USA. Captures up to 95% of common household allergens. Eliminates odors from pets, paint, cooking and more. High density carbon plus advanced compound, FormaldaSorb™, a patented potassium permanganate product, in second layer.

Filter life depends upon how much dust, dirt, chemicals etc are in your interior air. The VOC filter typically lasts 1 year. Furnace filter life is usually 3 months.
We urge that you consult your HVAC technician before purchasing any furnace filter. The Safe Home Duo filters have a MERV 8 rating which works in most newer (as in last 20 years) HVAC systems. If a MERV rating is too high for your unit, air flow is restricted and damage to the furnace may occur.  Go to Safe Home Products.com to see the various filter sizes available for Amaircare and HVAC systems. Just enter Amaircare VOC Filter or Safe Home Duo in the search box on the left.

Thank you for your questions.

Sincerely, Barbara

 

How To Choose the Best Furnace Filter for Your HVAC System

by Barbara 4. November 2015 04:56

Question: How do I choose a furnace filter for my HVAC system?

Answer: Always check with your HVAC technician prior to replacing your furnace filter. He or she is knowledgable about the air duct capacity and motor capacity of your system. Another option is to match the furnace filter in your system with another that is the same MERV rating or  MPR (Microparticle Performance Rating)‎. Explain that the 1 inch filter has an internal frame, that no air can go around it. Similarly the 4 inch thick unit is made to fit a 4 or 5 inch filter slot.

The buyer of a furnace filter must assume responsibility for his or her choice of furnace filters. No on-line company nor box store knows the age, the air duct capacity, the motor capacity, etc. of your HVAC system. Only your HVAC technician is qualified to determine the density of a filter that will work in your furnace and cause no problems.

Safe Home internal frame filters have two layers of media. The white side must be inserted into the filter panel so that the air flow goes through that part first. With the internal metal frame, this filter fits very tightly into the opening. No air can go around it. Your HVAC technician needs to know that this is an internal frame filter with no air escaping around it.

The Safe Home Duo 4 filters are also made to fit very tightly in the filter holder. This unit is also marked so it must be installed so that the air flow goes through the filter in the correct direction. Again it is important that your HVAC technician be aware of this tight fit. These units replace 4 or 5 inch thick filters. Always insert so that airflow goes first through the white side.

Thanks for your question.

Sincerely, Barbara

 

Converting From Oil Furnaces to Natural Gas In NE USA States Means Adding Gas Safety Devices, Too.

by Barbara 4. December 2014 09:04

Question about safety issues when converting from oil heat to gas heat.

Q: "A natural gas shale line from Marcellus Shale gas in Pennsylvania may extend into the Northeastern states in the next year, if approved (Quote from CBS 12/3/2014) We currently are using oil heat. Replacing the furnace with natural gas will save us a lot of money. How can we avoid the health risks associated with natural gas?"Thanks Tom.

Answer: Continue using carbon monoxide alarms and smoke detectors as you have been doing, remembering to test them monthly and change batteries once a year. I would also suggest you add a Scentry III Gas Shut Off system on your main line into the home as well as Safe-T-Alert Combustible Gas Alarm or a Safety Siren III natural gas alarm near your natural gas appliances such as ranges, fireplaces, etc.

With the Scentry III GFRAB, you can add additional remote sensors, a battery back-up and a connection to a home monitoring system if you have one or plan to get one.

Remember that natural gas is lighter than air and "puddles" at the ceiling above the appliance using it. If near an open stairway, the gas will go to the top of the stairway.

An annual furnace tune up with filter change is needed with gas furnaces as well as with oil. If you want the best disposable furnace filters, use the 4 inch or 1 inch Safe Home filters.

Thanks for your questions.

Sincerely,

Barbara

 

Practical Ideas to Reduce Heating and Cooling Bills Now and In the Future

by Barbara 4. February 2014 06:37

Question about how to reduce my energy bills without spending a lot of money.

Q: "My gas bills this winter almost doubled with the very cold weather. Can you give me some ideas about how to reduce my bills without being cold? Thanks. Phil"

Answer: First, contact your gas company to learn if they have a one time free energy audit available to customers. If not, I suggest you contact several insulation contractors in your area to give you their opinions about the R values in your attic and side walls. You may choose not to add additional insulation. With some rebates available in some areas, adding insulation may not be as expensive as you believe.

Next, check for air leakage from your unused electrical outlets that are on the outside walls of your home. Safe Home sells a variety of plugs and covers to reduce the leakage. For examples, look at the electrical outlet covers and sliding door outlet covers such as CoverPlug Duplex Outlet Cover for Electric Outlets, the Plug Guard Energy Saving Safety Outlet Cover, the IVORY STD 3-Prg 1 Screw Outlet Cover,6/PK, the Kiddy Cop Outlet Covers, Leviton 12777, 12/Box, or the Sockit Lockets.  We installed the Care Cover outlet covers one bitterly cold January years ago and learned how much cold air was blocked from entering our home.

If you choose outlet plugs, I suggest you purchase insulating covers that install behind each electrical outlet. To install, remove your current outlet cover, push the insulation around the plugs and replace the liner and the outlet plugs.

Use insulating foam around all water lines into your home. Make sure the "flaps" seal tightly on exhausts from clothes dryers.

Purchase a set back thermostat for your furnace. Many utility companies have a rebate to help pay for this unit.  Do remember that setting the temperature back means that time is required to get the temperature to a comfortable level. We learned in June 2013 that our original furnace was undersized: the new one comes up to daytime temperatures much faster. We keep our nightime temperature set at 68 degrees and daytime at 72 degrees. The natural gas fireplace keeps the family room comfortable on the below zero days and nights.

Change your furnace filters regularly. Choose a MERV rating that works with your furnace. Too high of a MERV rating means you'll not get much air through your filter. Safe Home filters have two layers of filtration. When the white layer gets gray, it is time to change the filter. The second layer filters out odors and chemicals; the first, dirt, dust and pollen. Safe Home filters come in one inch sizes that are self-sealing due to an internal frame and in 4 inch filters that have a self-sealing perimeter.

Use supplemental electric heaters where you need them. We suggest the ECO SAVE Ceramic Heater that is compact and efficient and used only 750 watts of electricity. If your feet get cold while the rest of you feels comfortable, then consider the Toasty Toes Heated Footrest.

If you have the money and your furnace is 15 or more years old, consider replacing the furnace. Make sure you get at least three bids. If the BTU ratings vary a lot, get another bid or two. YOu don't want an oversized furnace nor an undersized one (like the one we had for over 20 years).

We replaced both AC and the main furnace this summer with next to the highest efficiency units. (Total cost was $5400 less the rebates.) The new furnace is two stage, i.e. two blower speeds. We got rebates from both the gas and electric companies. Also we did not choose the most expensive units available. Sometimes you have to choose between a few thousand dollars and paying your HVAC person annual AC and heating tune-ups.

This past month we did use an electric ceramic heater set at 65 degrees F in our tiled bathroom and another one in the kitchen (ceramic flooring). That took the chill off in those rooms. Unfortunately, our new kitten has yet to learn to keep his claws in. So the insulated window shades remain up even in the cold weather. (A toss up between ripped shades and more insulation or keeping Buddy from climbing them.)

If you have other questions, please contact us.

Sincerely, Barbara

Disposable 4 Inch Furnace Filters MERV 8 with Carbon/Potassium Permanganate to Remove Odors, Dirt and Chemicals

by Barbara 21. January 2012 17:10

Question about the difference between a 4 inch Trion Air Bear Filter Pleated Furnace Filter and the Safe Home Duo Air Purify Furnace Filter 16x25x4 Inch.

Q; "How does the Safe Home Duo4 differ from the pleated 4 inch Trion Air Bear brand filter I currently use in my HVAC system? We are an allergic family but do not want the expensive, high maintenance HVAC systems with HEPA filters or electronic air cleaners. We were looking at the Envirosept Electronic Furnace Panel but those electronic furnace panels come only for one inch furnace slots. Thanks. Tim."

Answer:  Websites that sell the Trion Air Bear Filters note the high efficiency of filtration of the Trion Air Bear whole-house media air cleaners because of synthetic filter media and extended surface pleats that let the air pass straight through the pleats. The consensus is that using highly efficient air filters can increase HVAC equipment life (the motor, etc. remain cleaner) and save money.

Trio Air Bear and Safe Home Duo4 Filter Similarities:

  • Synthetic filter media
  • Extended surface pleats
  • Omni-directional air flow
  • MERV 7 to 8 rating: Note, using a high MERV rated filter on an older furnace with a smaller furnace motor is not advised. 
  • Fit tightly in filter slot: air must go through filter

Trion Air Bear and Safe Home Duo4 Filter Differences:

  • Air Bear has metal wires
  • Safe Home™ Duo4 has Formaldesorb™ impregnated into the media filter so odors, dust, pollen and chemicals are stay in the filter as air flows through it.

So why choose the Safe Home Duo4 Filter over the Trion Air Bear? The major reason is the Formaldesorb™ addition to the media material. Formaldesorb™ combines activated carbon and potassium permanganate. Chemicals like activated carbon and potassium permanganate make the filter media more efficient as they absorb smoke and chemicals as well as neutralize odors. So the air in your home or office is cleaner and smells fresher.  The only other air purifier units that use this combination are the Miracle Air PM-400 Commercial Grade Air Purifier. The MiracleAir HEPA Filtration System is portable and has an activated carbon pre-filter, 82 sq. feet of hospital grade HEPA plus a 15 pound carbon/potassium permanganate filter cartridge that has 12 lbs of activated carbon and 3 pounds of alumina potassium permanganate. So using the Safe Home™ Duo4 gives you a similar combination of carbon and potassium permanganate to reduces odors and volatile organic chemicals in a furnace filter.

Safe Home Duo4 Filter Specifications:

  • Thickness: 4 inches, also fits 5 inch filter slots
  • Captures up to 95% of common household allergens for allergy relief
  • Eliminates odors from pets, paint, cooking, and more
  • Uses high density carbon and advanced compounds plus synthetic filter media
  • Highly effective and affordable: Uses the same materials that protect critical environments in most hospitals
  • MERV 7 polyester white ASHRAE rated allergen filter plus an industrial chemical and odor filter,
  • Replacement intervals: every 3 to 6 months depending upon air quality of building.
  • Fits tightly in slot due to foam around entire outside of filter.
  • 300 grams per square foot of a 50/50 activated carbon and FormaldaSorb™ blend
  • Made in USA
  • Note: This furnace filter is not a control device for radon, carbon monoxide or carbon dioxide.
  • Limited Warranty: Free of manufacturing and material defects . If product is found defective within 30 days of purchase, it will be replaced at no additional charge. 
  • Product is not packaged for sale outside of the United States

Many furnace filters remove dust and dirt, only one aspect of indoor air pollution. Levels of gases from cleaning products, formaldehyde out-gassing from laminated wood, VOC's i.e volatile organic compounds etc. are higher than in the past because of increased sealing and insulation of homes and businesses. For those with allergies and chronic medical problems, indoor air pollution is uncomfortable if not dangerous. The EPA ranks indoor air as often a greater risk than outdoor pollution and water contamination. Allergy and asthma symptoms, as well as long term health problems, are often caused or triggered by these common gases. In many areas, polluted indoor air is a greater health threat than outdoor air or contaminated water.

Thank you for your question. If your allergy symptoms require more, you may want to add a supplemental air purifier system. Consider the Airpura P600-W HEPA,VOC, UV HVAC Whole House Air Purifier which filters air even when the furnace blower is off. This unit pulls air from your return air ducts and passes it through HEPA filtration and a VOC filter while the UV light works to kill bacteria and viruses.

Thanks for your question.

Sincerely, Barbara

 

All Furnace Air Goes Thru Safe Home Brand Disposable Furnace Filter With Self-Sealing Frame

by Barbara 14. December 2011 09:02

Question about why the Safe Home Duo 16 x 25 x 1 furnace filter is a better furnace filter than a washable metal one or a fiberglass disposable one.

Q: "Please explain why this furnace filter is superior to a washable metal furnace filter or a disposable fiberglass disposable furnace filter. Thanks. Sam

Answer: Differences are several:

  • All air must pass through the Safe Home Duo furnace filter because the frame is internal. The twin media covering the frame are self-sealing. To install, push the Safe Home filter into the one inch slot. The soft filter media seals against all 4 edges.
  • Each Safe Home Duo filter has two types of media: one layer is for dust, dirt and pollen; the second layer also contains an odor and formaldehyde absorbing layer.  Judged to be 95% effective at filtering out dust, dirt, allergens, etc.
  • Compare 95% effectiveness of the Duo with either an all metal filter or one made of fiberglass. Fiberglass tend to clog quickly with large dirt particles, restricting air flow while letting small particles go through. These smaller particles can include mold and bacteria. Fiberglass are often rated at 2% effective while non-electrostatic are rated at 4% effective or less.
  • Neither the metal washable filter nor the disposable fiberglass filter contains activated carbon and potassium permanganate, the filter media for odors and chemicals such as formaldehyde and paint fumes.
  • The Safe Home Duo is a MERV 8 rated filter made in the USA: inexpensive metal and fiberglass filters are often MERV 2 or 3.
  • No mess. No time spent washing filters. Just put the dirty Duo filter into the garbage and replace with a clean one every 3 to 4 months or more often if yours is an exceptionally dirty environment.

Installation Instructions: The white side of the filter should face incoming air. In most systems, the white side should face away from the air handler or furnace equipment. Air should enter the white side, which traps allergens, and exit through the dark side, which traps gases and odors.

Note: Check with your HVAC technician to verify that your system is able enough to handle the density of a MERV 8 filter before purchasing this or any other MERV 8 filter. Install this MERV 8 with Air Flow First Going through the White Media. Made in USA.

Thank you for your question. We sell the Safe Home Duo in many sizes. We also sell the Safe Home Duo Air Purify Furnace Filter 20x20x4 In. and other sizes in the 4 inch furnace filters. These thicker furnace filters also have self-sealing edges around a 4 inch furnace filter core to filter out allergens with the Formaldesorb carbon and potassium permanganate.

Thank you for your question.

Sincerely, Barbara

 

Envirosept Furnace Panel Sizes Are Often Rounded Up to Next Whole Number

by Barbara 25. May 2011 10:38

Question about Envirosept Furnace Filter Panels and How to Choose the Correct Size.

Q: "I have bad allergies. I have a 5 ton Carrier HVAC system. I am currently using the disposable paper filters with the cardboard surrround. When I push the filter into the 1 inch furnace slot, the spring at the back causes the filter to buckle. My furnace slot is 21.5 x 23.25. Do you have an Envirosept to fit this size opening? Is this more effective than a paper filter? How does it work? Thanks. Bill"

Answer: In the furnace industry, furnace filter sizes are actually rounded up to the next whole number. (Thank you for your question because this was not a fact that was active in my mind!) I phoned the manufacturer and learned this and also that a 2 x 4 is actually 1.75 inches by 3.5 inches! Actually, in the first paragraph of every Envirosept Furnace Panel, Safe Home does give this information!

To determine the actual size of what you need, imagine a picture frame. You would measure that edge to edge across the top and the same up the side. That is how you measure a furnace filter. Then you pick the next larger furnace filter or furnace panel. Or you can remove the disposable furnace filter and measure it the same way.

In your situation, you would need the EnviroSept 22x23 Furnace Filter Panel,14 Filter Pads. This panel actually measures 21.5 inches by 23.25 inches, the measurements you gave me on the phone. This Envirosept includes 14 filter pads, two of which are in the furnace filter panel when it is delivered. So this filter size is rounded up if it is .5 inches for the 22 part and rounded down for the 23 part since your filter is 23.25 inches.

To get the most from your Envirosept, you need to run the fan continuously and change the filter pads regularly. This can mean every 3 to 4 weeks or even longer. We recommend that you check the panel after the first two weeks. Your choice then is to take the dirty primary filter and throw it out and use the secondary filter in the primary or first slot or replace both filter pads. Remember you do need an electrical outlet for this unit.

Thanks for your questions.

Sincerely, Barbara

AirPura Whole House HVAC Air Purifiers, How Do They Differ?

by Barbara 21. May 2011 07:30

Question about the AirPura Whole House forced air heating and cooling system air purifiers.

Q: "I want to install an AirPura HVAC air filtration system. I don't know which one will meet my needs. Please explain what the units have in common and how they differ. Thanks. Sam.

Answer: All the AirPura systems are supplemental air cleaners, i.e. they bypass air from the central air flow, clean it and return it through the main system. All are made in Canada, not China. AirPura suggests you have a "tinsmith" or HVAC person cut the holes in your return air duct. Once connected to your return air duct, a portion of the main airflow is by-passed through the unit which purifies it and returns the clean air into the system. The Airpura unit can continue to filter and distribute clean air throughout your home even when your central air system is turned off. Even when your central air system is turned off the Airpura W600 can continue to filter and distribute clean air throughout your home.

Here are the common features of all AirPura Whole House Air Purifiers:

  • draws a portion of the main airflow as a by-pass, purifies it and returns the clean air into the system.
  • efficient 560 CFM fan motor ensures that no change in air pressure takes place in your central air system.
  • variable speed control, you choose the level of purification required: from OFF to MAX.]
  • save on your energy costs and help protect the environment by cleaning and recirculating your indoor air instead of heating or cooling outdoor air.
  • easy change pre-filter:simply unclip the input pipe and replace the pre-filter pad.
  • 18 lbs Carbon Filter
  • True HEPA filter Traps 99.97% of particles as small as 0.3 microns:40 sq ft HEPA filtration surface
  • Motor and electric parts out of the airflow:Other systems blow clean air over the motor and recontaminate it
  • One piece motor / fan assembly: Eliminates vibration problems where separate fan is attached to a shaft with a set screw. Compact motor / fan design allows more space for filtration
  • Powdercoat steel housing: Robust construction. No plastic vapors.
  • Felt Gaskets Seal the filter chamber: No off gassing from rubber seals
  • Unique pressure seal: The pressure seal system on the filter chamber ensures that all the impurities pass through the filters. Other systems allow dirty air to escape and fail to acheive their promised HEPA rating of 99.97% filtration.
  • Physical Size: 22" high, 15" wide
  • Effective for up to 2000 sq ft

These are the various units and what makes each unique:

  • Airpura R600-W: All Features Listed Above, ie. 18 lb carbon filter plus true HEPA filter. Use in a typical home up to 2000 sq. ft where you want better air quality.

  • Airpura V600-W: All Features Listed Above Plus Enhanced special blend carbon in the 18 lb carbon filter adsorbs VOCs and specific chemicals. True HEPA Filter. Use in a home up to 2000 sq. ft where you have exposure to ammonia, formaldehyde, etc.

  • Airpura UV600-W: UV Germicidal lamp sterilizes antigens, pathogens and mold spores as they are trapped on the filters.17 inches germicidal surface U shaped lamp: 2 times the length of other makes and 2 times as effective Plus 18 lb carbon filter plus true HEPA filter. Use in a home up to 2000 sq. feet. when you are concerned about mold, antigens, germs, etc.
  • Airpura P600-W:  TitanClean photocatalytic oxidizion technology targets VOCs, airborne chemicals and odors as well as mold, particles and microorganisms. Has a titanium dioxide reflector that works in conjunction with the Airpura'20 watt UV germicidal lamp. 18 lb. carbon filter, true HEPA filter. Use in home or business up to 2000 sq. ft. when you are concerned about reducing airborne chemicals to smaller safer compounds, until only carbon dioxide and water vapor are left. You can retrofit your UV600-W (a portable air cleaner) to use this reflector.
  • Airpura H600-W:  For allergy and asthma sufferers and full scale particle filtration. Hi-C carbon weave filter traps airborne chemicals and odors. 18 lb. carbon filter, True HEPA Filter. Use in a home up to 2000 sq. ft. where persons live with allergies to pollen, dust mites, dust, etc. as well as to chemical odors.
  • Airpura C600-W:  Extra large carbon bed ( 3 Inch) for maximum carbon adsorbtion. Especially effective for airborne chemicals and gases. 26 lb. carbon filter.  Special carbon blends available for specific chemical problems. HEPA-Barrier post filter traps particles. True HEPA Filter. For house or building up to 2000 sq. ft with HVAC forced air heating and air conditioning system.

So choose an AirPura whole house unit based upon your needs. Remember that if you have a house larger than 2000 sq. ft, the effectiveness of any of these units is greatly reduced. In many homes larger than 2000 sq. ft, there are 2 or more HVAC units depending upon the home size.

I hope this has helped you to make your decision. Thanks for your question.

Sincerely, Barbara

 

Safe Home Room Air Return Grill Replacement Filters Can Create a Home Freer from Dirt and Chemicals

by Barbara 19. September 2010 10:15

Question about the SafeHome™ Duo 20 x 20 x 1 4 Pack and the Safe Home System Cold Air Return Purifier, 20 X 20 X 1

Q: "We just bought a new retirement home in Arizona. Instead of the usual furnace filter system we had up north, this HVAC system has one very large cold return air grille high on the wall in the family room.  Up north there were lots of cold air returns but none had a place for a filter and none were this large. We understand this is the new way of filtering air. The grille tips out and holds a one inch filter panel. We want to avoid any unnecessary house cleaning. Which cold air system do you recommend and why? Thanks. Pete."

Answer: Particularly in Southern and Western states where air conditioning is used most of the year, the newer homes have filter slots in return air grilles. One website notes that furnace filters located in the furnace plenum near the motor are meant to keep the motor clean, not the household air. The less dirt that gets to the motor, the more likely you'll get longer life. The problem is that dust and dirt get into the duct work. So filter grills not only keep the household air cleaner but also keep your duct work cleaner. Modifying older HVAC systems is difficult because the actual ductwork is often much smaller. If you put too high of a MERV rated filter into the furnace slot, you'll cut down the air movement and possibly have an overheated motor,too.

Safe Home™ sells the Safe Home Duo and the Safe Home System. Both are disposable filter products which means no messy washing, waiting for filters to dry and most likely running the unit without any filtration during that time.

The Duo has an internal metal frame with two filters, one for dust, mold, dirt and pollen and the other for gasses such as formaldehyde. The unit fits very tightly into the tip out filter grille holder because the filtration media surrounds the metal frame. The second layer, the inner layer, is impregnated with carbon and potassium permanganate which capture the VOC's such as formaldehyde and ammonia. We suggest changing that filter about every 3 months unless your home is subject to dust from remodeling, etc.

The second, the Safe Home System, consists of 5 filters of which 4 are electrostatic. These are pleated with wires that create the static charge. These 4 pre-filters that capture dust, pollen, dirt, etc. fit into the grille itself. The 5th filter, the VOC or volatile organic chemical filter, actually fits into the duct opening behind the grille. So it fits into the actual duct work. The System has 125 grams per square foot of activated carbon and FormadaSorb to remove the most common, hazardous pollutants. The replacement filters for the filter slot are electrostatic air purifier filters. These pre-filters should be changed at least every three months.

NOTE: Neither of these filters will remove carbon monoxide, radon gas or carbon dioxide. We recommend installing carbon monoxide monitors on every level of your home and in or near all sleeping areas. Test units regularly. Replace batteries at least annually.

So, either unit will meet your needs. Do check and make sure the carbon chemical fits. The Safe Home Duo and the Safe Home Filter System come in sizes to fit almost everyone's return air grille and/or furnace slot. If you have custom sized slots, please contact us for pricing on special sizes.

Thanks for your question.

Sincerely, Barbara

Ultra Low Resistance Allergen Filters for Cold Air Return Filter Grilles in Walls or Ceilings

by Barbara 22. August 2010 06:01

Question about theSafeHome Duo 20 inch by 20 inch by 1 inch 4 Pack and the Safe Home System Cold Air Return Purifier, 16X20X1

Q: "What is the difference between the two units as far as air flow and filtration is concerned? I manage a clinic where we have several very large cold air filter grills. Some physicians use aerosol products during medical treatments. We are also concerns about keeping the level of dust, spores, etc. to a minimum as the forced air HVAC system recirculates air. The filter grilles are hinged. Currently we are using 1 inch fiberglass disposable filters. Thank you for your input. Steve."

Answer: Both types of air filters will fit your 16 x 20 x 1 inch air return filter grille.

The Safe Home Duo, is a two layered polyester filter with a MERV8 rating. The first layer filters the particulates like dust, pollen, etc. The second, inner layer is impregnated with carbon and potassium permanganate that is for chemical removal.The Duo offers the same allergen, odor and chemical removal as the System, but in a single 1" filter. Duos utilize an inner steel frame that creates a filter with self sealing edges for great filtration and whisper quiet operation. SafeHome Duos are available as individual 3 month filters. You may need to replace more often depending upon your facility. To install, you fold the excess material around the filter's internal frame to slide it into the grille and then tuck the remainder in so you can close the cover over the filter slot. This excess material helps seal the edges where the filter fits into the equipment and keeps air from going around the filter through gaps. Air should enter the white side, which traps allergens, and exit through the dark side, which traps gases and odors.

The SafeHome System Annual filter package consists of four pre-filters for dust, pollen, spores, etc. and one pollution filter. The pollution filter absorbs gases and odors and fits into the air duct behind the return grille with filter slot. The System has 125 grams per square foot of activated carbon and FormadaSorb to remove the most common, hazardous pollutants. The replacement filters for the filter slot are electrostatic air purifier filters. These pre-filters should be changed at least every three months.

More frequent changes may be necessary due to a wide variety of circumstances that increase chemical, odors and particles like allergens or dust. Examples of chemical and particulate sources include the following:

  • Painting or renovations
  • High levels of outdoor pollution
  • Burning candles or using air deodorizers
  • Cleaning agents
  • Shedding Pets
  • High activity levels

Rated at MERV 7, these filters are pleated with thin metal wire in diamond shapes covering the pleats. MERV 7 is an industry standard rating that means the filter removes 50% to 70% of particles down to 3 microns in size. With use, removal increases to more than 98% effectiveness.

The manufacturer recommends that the Safe Home System be used in the largest air return grill for each air system. So, one choice is to use the Duo filters in all but the largest air return grill. When you calculate the difference in price, however, you may elect to keep all the grille filters the same especially if they are the same size in each exam or waiting room.

Both the SafeHome Duo and the SafeHome System come in many sizes.

Thank you for your question. Please contact us if you need more information.

Sincerely, Barbara