Indoor Air Quality Tips

Heating and Air Conditioning in Arlington, TXHeating and Air Conditioning in Arlington, TX – Heating and air conditioning systems offer the dual purpose of controlling the temperature and improving indoor air quality in the home. Indoor air quality is an important consideration as indoor pollution can affect your health. In fact, according to the Environmental Protection Agency (EPA), indoor air is likely more polluted than outdoor air! A home with proper ventilation dilutes pollution from indoor sources and carries pollutants outside of the home. High temperature and humidity can increase the concentration of some contaminants with your heating and air conditioning in Arlington, TX.

Indoor Air Quality Issues

The EPA has identified numerous sources of indoor air pollution. Some of these include the following:

  • Dust and mold are allergens that can disperse throughout the home, commonly through the duct system
  • Dangerous radon and pesticides can enter your home from the outdoors
  • Due to combustion, oil, coal, wood and tobacco products produce dangerous carbon monoxide.
  • Air fresheners, carpet, linoleum, paint, cleaning products, pressed wood furniture, cabinetry, and other building materials can produce high levels of toxins.


Newer homes are built tight to improve energy efficiency. Unfortunately, without proper ventilation, higher pollutant levels are more likely than in older homes. Fresh outdoor air is required to dilute polluted air and move it outside.

The Health Effects

Symptoms commonly related to poor indoor air quality include headaches, dizziness, fatigue, along with eye, nose, and throat irritation. Carbon monoxide poisoning can occur within minutes. It’s often related to faulty gas-operated equipment or ventilation pipes. Long-term effects from indoor air contaminants may include chronic respiratory diseases, heart disease, or even cancer. Potential signs your home may lack adequate ventilation include condensation on windows or walls, a musty odor, excessively soiled heating and air conditioning equipment, and the presence of mold in the home.

Biological Contaminants

Biological contaminants that can affect air quality include bacteria, molds, mildew, animal dander, viruses, dust mites, cockroaches, pollen, and more, according to the EPA. Rodent urine is a powerful allergen, and once it dries, it can become airborne. Soiled and contaminated air handlers in the heating and air conditioning system can be a source of mold, mildew, and other biological contaminants. From the air handler, these contaminants can be distributed throughout the home. Professional cleaning is recommended to prevent this source of air pollution in the home. Controlling the indoor relative humidity will minimize biological pollutants. Relative humidity of 30-50 percent is recommended. Wet surfaces are a breeding ground for mold, mildew, bacteria, and insects. High humidity also provides an ideal environment for dust mites to thrive. Controlling humidity and repairing leaks will help to prevent these problems.

Air Quality Solutions

Fortunately, there are solutions to ensure a healthier environment in your home. These options include the following.

  • Eliminate sources of pollution such as tobacco smoking, and wood-burning stoves. Use natural cleaning products, such as vinegar or citrus-based products.
  • Open windows and doors when the weather permits to increase ventilation. Run exhaust fans in the bathroom or kitchen, and operate window or attic fans when possible.
  • Modifications can be provided for your heating and air conditioning in Arlington, TX that increase the filtration of contaminants for improved air quality.  Depending on the type of filter, routine filter changes assist in providing cleaner air.
  • Routine filter changes will also help the heating and air conditioning system by filter out damaging dust.
  • Routine cleaning of the home prevents mold, reduces dust mites, and dust.

HEPA Filter

A HEPA filter removes up to 99% of contaminants moving through your heating and air conditioning in Arlington, TX. However, a HEPA filter can only be used in a system designed for it. Contact your system’s manufacturer, or your Express Metro Service technician.


The chemical formaldehyde is used widely in the manufacture of building materials and household products. Sources of formaldehyde include glues and adhesives, and as a preservative in some paints. Pressed wood products are an especially significant source of formaldehyde. Pressed wood products include particleboard, hardwood plywood paneling, cabinets, and furniture. Medium-density fiberboard (MDF) is recognized as being a source of elevated formaldehyde emissions.


If your home’s heating or air conditioning in Arlington, TX is ten years old or older, you could benefit from a new installation. Older heating and air conditioning systems can be a source of bacteria, allergens, and mold. Today’s systems often feature advanced temperature and humidity controls. Most offer a higher degree of air filtration.


Some popular solutions for poor indoor air quality include:

  • HEPA Air Purifiers
  • UV Air Purifiers
  • Air Exchangers
  • Humidifiers
  • Dehumidifiers

Contact Metro Express Service for additional information. Our certified HVAC technicians can provide a comprehensive in-home evaluation, and recommend the most beneficial options applicable for your home and system. If you are concerned about the indoor air quality, contact a Metro Express Service representative. Our factory-trained professionals will work with you to service your heating and air conditioning in Arlington, TX.  Professional results that will provide for both your comfort and optimal air quality.

Metro Express Service is a leading local heating and air conditioning company offering factory-trained professionals. We offer a variety of residential and commercial HVAC services in and around the Fort Worth/Dallas area for your year-round comfort. Our services include heating system and AC tune-ups, service, the installation of programmable thermostats, repairs, replacement, heating and, air conditioner installation in Arlington, TX and more. We offer emergency repair services 24 hours a day, 7 days a week and 365 days a year for your immediate needs. When you call, we will be glad to answer your questions, and schedule service at your earliest convenience. You can rely on us for exceptional service. We are a member of the Better Business Bureau with an A+ rating, reflecting our goal of excellence. Contact Metro Express Service in Dallas today to schedule the reliable HVAC services you need


Randy Murphy

Randy Murphy has been building his knowledge of the air conditioning and heating business for several years now. He first started applying his knowledge while working for his father’s HVAC company. Later, in 1987, Randy started his own business: Metro Express Service. He has been a top 10 Trane & Amana dealer for over eight years. When it comes to heating and cooling, Randy knows the business better than anyone.
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