Dust Mites: Serious Allergens in Your Home

Dust mites scavenging a bed sheet for dead skin (magnified 500 x) TIME

The quality of life inside your home is directly related to the quality of the air inside your home. Your house—walls, windows, doors, and roof—likely keeps in more air pollutants and allergens, like dust mites, than it keeps out leading to environmental allergies caused by high concentrations of allergens. The primary causes of poor indoor air quality in homes is the release of gases or particles (dust, smoke, and insect parts) that lead to indoor pollution and possibly life-threatening breathing problems such as asthma. Inadequate ventilation increases indoor pollution levels by not allowing enough outdoor air into the house to dilute indoor pollution.

Indoor pollutants are often a greater health hazard than the same pollutants in an outdoor setting because of the concentration of the indoor air pollution. Since American families spend most of their time indoors, asthma and other respiratory problems are on the rise from poor indoor air quality. Fortunately, there are steps that you can take to reduce the health problems from existing indoor air quality and prevent new ones.

A dust mite is one of the major sources of indoor air pollution. Dust mites are spider-like microscopic insects that are often allergens to humans. Dust mites live on dead skin cells and pet dander found in house dust. The waste from dust mites and their dead body parts are the leading cause of allergy in humans. Dust mite allergies are not seasonal and cause health problems all year round. Though dust mites are microscopic and airborne, they can have a large role in the occurrence and severity of children’s asthma.

Dust mites live in warm, moist areas where dust accumulates freely and is not easily cleaned or cleaned often; both common conditions found in most of our homes and work places. Carpets, curtains, bedding, mattresses, upholstered furniture and even stuffed toys are places that dust mites thrive. The bedroom is the most affected as there is plenty of cloth surfaces for the tiny creatures to live, and there’s humidity from people’s bodies.

Dust mites are a key trigger of allergic reactions such as sneezing, rashes, watery eyes, coughing, dizziness, lethargy, breathing problems (asthma), and digestive problems. There is no way to completely eliminate dust and dust mites, but here are ways you can reduce dust mites in your home and improve your indoor air quality and health.

  • Remove curtains, drapes, feather pillows, upholstered furniture, non-washable comforters, and soft toys.
  • Wash all bedding in hot water (hotter than 130°F) every 7 to 10 days. Don’t use mattress pads. Use plastic covers on mattresses and pillows.
  • Replace carpets with easy-to-clean stone, linoleum, or wood. Polished floors are best. Mop floors often with a damp mop.
  • Wipe dust off of surfaces with a damp cloth. Vacuum carpets and furniture regularly with a machine that uses a high-efficiency particulate air (HEPA) filter. Don’t forget to vacuum upholstered furniture and curtains.
  • Install an air cleaner with a high-efficiency particulate (HEPA) or electrostatic air filter.
  • Wash carpets and upholstery with special cleaners, such as benzyl benzoate or tannic acid spray.
  • Lower the humidity in your home using a dehumidifier.

All Quality Air is a leading provider of solutions for improving your indoor air. Call or contact us today for a healthy home analysis, and let us make recommendations that save you money, restore your indoor air quality and reduce health problems from allergens.

Freon and the Law

Freon tank charging air conditioner

Freon is a refrigerant used for most home heating, ventilating, and air conditioning (HVAC) units in America. While only a brand name of DuPont, the name “freon” often represents all HCFC refrigerants. The makeup of freon includes hydrogen, carbon, fluorine, and chlorine, or HCFC (hydro chlorofluorocarbons).

HCFC was created to take the place of a refrigerant containing carbon, fluorine, and chlorine, or CFC (chlorofluorocarbons). It was argued that HCFC was safer than CFC because HCFC is nonflammable, nontoxic, noncorrosive, and odorless. After a long debate the CFC was finally phased out and HCFC was established as the most common refrigerant.

In the mid 1970’s new studies showed that HCFC was perhaps safer for use in homes but more damaging to the environment. The combination of hydrogen, carbon, fluorine, and chlorine create what is known as a fluorocarbon. Fluorocarbons have been monitored closely over the last 40 years. Thorough research has proven that their damaging effect on the ozone layer is a major threat to the environment. This finding quickly gained the attention of the federal government who stepped in to strictly regulate freon and other HCFC refrigerants.

Who Regulates Freon

Freon is regulated by the Environmental Protection Agency, or EPA. The EPA works as part of the United States government to develop solutions and create laws to protect the environment. It is the EPA who declared freon was an Ozone Depleting Substance which must be “phased out” slowly. To do this properly the EPA joined forces with the international efforts to eliminate ozone depleting substances called the Montreal Protocol.

Montreal Protocol is an international project developed in 1987 to prevent damage to the ozone layer by banning all ozone depleting substances. Most countries around the world began enforcing the project shortly after it was created. The United States got a late start but as of January 1, 2010 is fully involved.

Phasing Out R-22 Freon

As part of the Montreal Protocol the Environmental Protection Agency has begun a Phase Out program which will lead to a U.S. ban on all ozone depleting substances. The targeted ozone depleting substances include all HCFC freon refrigerants; commonly referred to as HCFC-22 (R-22), and HCFC-142. The Phase Out works by slowly mandating the use of HCFC freon to the point of nonexistence.

Changes for 2010

  • Production and distribution of HCFC-22 and HCFC-142b freon will be limited by regulating manufacturers. Some manufacturers will be required to stop production.
  • Approved manufactures will be exempt from some or all of the regulating standards.
  • Existing HCFC-22 and HCFC-142b freon can still be reclaimed to be recycled for reuse.
  • All newly manufactured HVAC equipment must function without HCFC-22 and HCFC-142b freon. New HVAC equipment will be required to use refrigerant approved by the EPA.
  • 75% of freon will be phased out of the United States by limiting consumption and new production.

Scheduled Changes for 2015

  • Regulating standards will apply to all manufacturers, distributors, and consumers. No exemptions will exist.
  • Only HVAC equipment manufactured before January 1, 2010 will be recharged with HCFC-22 and HCFC-142b freon.
  • Existing HCFC-22 and HCFC-142b freon will still be reclaimed to be recycled for reuse.
  • 90% of freon will be phased out of the United States by limiting consumption and new production.

Scheduled Changes for 2020

  • All manufacturing and production of HCFC will be banned. No demand for freon will be met by production of new freon, even for equipment purchased prior to 2010.
  • Licensed reclaimers will be permitted by the EPA to recycle existing HCFC-22 and HCFC-142b. New regulations for recycling and reuse will be implemented.
  • 99.5% of freon will be phased out of the United States by limiting consumption and banning new production.

Scheduled Changes for 2030

  • All production, recycling, and distribution of HCFC-22 and HCFC-142b must end. This means that no old or new equipment will be charged with HCFC-142b or HCFC-22 freon beginning January 1, 2030.
  • HCFC-22 and HCFC-142b freon must be destroyed adhering to disposal guidelines and strict government law.
  • Possessing, using, or distributing HCFC-22 or HCFC-142b freon will be against the law.
  • 100% of freon will be phased out of the United States by limiting consumption and banning new production.

What This Means for the Consumer

Regulation of Freon in HVAC Units

  • Any owner of cooling equipment which uses more than 50lbs of freon must repair all found leaks within 30 days of notice. Exceptions to this rule do exist and can be found on the Environmental Protection Agency website.
  • All HVAC equipment using more than 2,000 lbs of freon must install a special system that will detect leaks immediately. It is law that this equipment be monitored, maintained, and all details be reported.
  • As of January 1, 2010 it is illegal to charge any residential hvac equipment manufactured after January 1, 2010 with R-22 freon. Units manufactured before that date can still be charged with R-22 if serviceable. If unserviceable, they may be replaced from the manufacturers existing inventory of unused/unsold units if available, of R22 refrigerant units manufactured before January 1, 2010 or the newer units manufactured after January 1, 2010 which utilize R410a freon. Units manufactured after January 1, 2010 for residential use may only be charged with R410a freon if a leak occurs.
  • HVAC units purchased and installed prior to 2010 may be recharged under strict guidelines.
  • All activity with freon must be recorded and reported to the Environmental Protection Agency by the technician or wholesaler.

Laws for Manufacturing and Purchasing Freon

  • Manufacturers of freon are governed by strict laws that enforce proper production. These laws limit amounts produced, how freon is distributed, and who is authorized to purchase it.
  • Under the Environmental Protection Agency Refrigerant Sales Restrictions companies purchasing new or recycled freon must be licensed.
  • A licensed technician who is certified to service appliances requiring the refrigerant may purchase it if able to present proof that the proper handling equipment is being used.
  • All freon purchases must be a minimum of 20lbs.
  • Manufacturers, wholesalers, and licensed technicians must all keep records of freon. These records must contain names of purchasers, date of purchase, and quantity (in pounds) of purchase.

Freon Disposal and Reuse

  • Any HVAC unit that will be destroyed must first have all freon reclaimed (collected for recycling).
  • A licensed technician with EPA approved equipment must be the one who reclaims the freon.
  • All freon reclaimed from HVAC equipment must immediately be contained and sent to an EPA certified reclaimer. The reclaimer will then recycle the freon. Once recycled it may be sold and reused according to law.

By phasing out freon over 20 years the Environmental Protection Agency is working to prevent stress of those with HVAC systems requiring the soon to be illegal refrigerant. Many environmental experts are working to put substitutes on the market for a easy transition into a safer alternative to HCFC refrigerants. With many lessons learned the EPA is confident these alternatives will benefit our environment which only helps the consumer. In addition, the substitutes will also quickly grow to meet demand to ensure that no home be left without adequate heat and air.

How Does the R-22 Phase out Affect Consumers?

Availability: R-22 must be recovered and recycled (for reuse in the same system), reclaimed (reprocessed to the same purity levels as new R-22), or destroyed. This could take some time but could also mean that R-22 will not be widely available.

Cost: with dwindling supplies, the consumer should be aware that prices of R-22 may increase. This is just the basic supply-demand economic forces in play.

A Common Sense Approach To Servicing Your System

Along with prohibiting the production of ozone-depleting refrigerants, the Clean Air Act also mandates the use of common sense in handling refrigerants. By containing and using refrigerants responsibly — that is, by recovering, recycling, and reclaiming, and by reducing leaks — their ozone depletion and global warming consequences are minimized. You should always select a reputable dealer that employs service technicians who are EPA-certified to handle refrigerants.

All our technicians are certified to “Section 608 certification” of the Clean Air Act that requires minimizing releases of ozone-depleting chemicals from HVAC equipment.

A Common Sense Approach To Purchasing New Systems

You should consider energy efficiency, along with performance, reliability and cost, in making your decision. And don”t forget that when purchasing a new system, you can also speed the transition away from ozone-depleting R-22 by choosing a system that uses ozone-friendly refrigerants like R-410 which is gaining widespread use for higher efficiency systems.

For more details on the Clean Air Act and to get more educated on the laws, please visit the EPA Site.

Common Myths about R-410A

There have been a number of myths and misconceptions about R-410A refrigerant and air conditioners that use it that we have heard over the years. Some of these are completely untrue, and some are simply exaggerated. Here are some of them.

R-410A costs are much higher
As with any new technology/product, the initial manufacturing process costs are higher. The same is true for the non-ozone depleting refrigerant R410A. With the deadline to change refrigerants, as more suppliers start manufacturing R410A, the cost will come down.

Over the next few years, you will see prices of R22 systems go up as these manufacturers have to switch production to R410A systems that are mandated by law.

R-410A technology is new and it”s better to wait
Air conditioners using R-410A have been available in the U.S. since the mid 1990”s, so they”re not new. They”re new to people who haven”t heard about them, and the fact that there will be no R22 systems going to be manufactured in years to come.

R-410A air conditioners are prone to break down more often
New technology used for R410A systems are designed and built with a heavier gauge metal to provide heavy-duty operation. This has the effect of less vibrations that lead to fewer equipment failures; additionally, this also reduces noise levels.

Manufacturers require their distributors and technicians to be fully trained on R-410A before they can sell, install or service R-410A equipment. As a result, a properly installed and maintained R-410A system is more reliable.

R-410A equipment is unsafe
With over a million R-410A air conditioners operating worldwide, and nearly a decade of field testing and product history, there is no evidence to suggest that R-22 systems are any safer than systems that contain R-410A.

R410A systems are rigorously tested by their manufacturers, as well as by independent safety testing laboratories such as Underwriters Laboratories. Most of the negative comments are from independent installers and equipment suppliers who are not certified and trained by the manufacturer.

Going Green Specials


Call us for special pricing. These won’t last long.


We also occasionally change out perfectly good air conditioning units, which are currently working for upgraded models for many customers. If you are interested in a used unit, please let us know. Many of the used units still have some remaining factory warranty on them, and some even have extended warranties still in effect and others do not. We will warranty the installation for 90 days, but not on air conditioning equipment itself that no longer carries a factory warranty on it. As a rule of thumb, air conditioning equipment that is properly maintained may last 10-15 years or longer, depending on the quality of the unit, the model and manufacturer.

It is important to note however, that air conditioning equipment which is older than 10 years old, will become energy inefficient. Although it may be working and functioning properly, it will cost you significantly more to operate fully functional outdated equipment than if you purchased a newer model.