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In several studies, the EPA documented that indoor air quality (IAQ) can be up to 70 times more contaminated than the outdoor air. Many people don’t realize the impact indoor air quality and HVAC systems have on their health. Inadequate HVAC maintenance is a major cause of poor indoor air quality which can cause headaches, fatigue, skin rashes and eye, nose lung and throat irritation. At Walker Heating and Air Conditioning in Woodbridge, VA, we are committed to providing our customers with a healthy, energy-efficient and comfortable indoor environment.

A family can generate a surprising amount of pollutants like dust, dander, smoke and pollen. Add in moisture from the air and you have the perfect breeding ground for mold, fungi and bacteria which can cause coughing, sneezing, sore throats, watery eyes and exacerbate asthma and other respiratory conditions. Dirty, unmaintained duct work and ventilation can continue to pump these pollutants throughout the house, making you and your family sick. Walker’s indoor air quality technicians are trained and certified to address all your indoor air quality problems so you and your family can enjoy clean air.

Indoor Air Quality Steam Humidifier Installation

Indoor Air Quality Services in Woodbridge, VA and surrounding areas

Our IAQ specialists in Northern Virginia are here to help create an action plan to make your indoor air safe and clean. Depending on your needs and concerns, we can analyze your home for air filtration problem spots and recommend and install indoor air quality equipment. From ultraviolet (UV) air treatment systems to home air cleaners, Walker HVAC technicians will answer all your questions, provide expert recommendations and perform quality HVAC services.

Schedule an appointment with Walker Heating and Air Conditioning if you’re concerned about the quality of air in your home. We offer a range of IAQ services including:

  • Media Air Cleaners
  • HEPA filters and Air Purification Systems
  • UV Air Disinfection
  • Energy Recovery Ventilators (ERV’s)
  • Humidifiers and Dehumidifiers
  • Aeroseal Duct Sealing
  • Duct Cleaning
  • Air Duct Sanitizing Foggers

Call us at (703) 483-2400 to schedule your free indoor air quality consultation today.

Cleaning the Air in Your Home

Here are 3 ways to improve the Air Quality in your home.

1) UV lights & UV purifiers

  • Kills bacteria, viruses, & germs
  • Controls mold & other allergens
  • Reduces smells & odors
  • Disintegrates dirt on contact

2) Humidifiers

  • Helps moisturize dry skin
  • Moistens nasal passages
  • Protects furniture and floors from dry rot
  • Prevents static shock -Savings
  • Feel warmer at lower temperature
  • Calms allergies and soothes cold and flu symptoms

3) Air Cleaners

  • Protects your HVAC equipment
  • Reduces allergies
  • Less frequent air filter replacement
  • Can help eliminate bacteria, mold, viruses, and odors
  • Cleaner air in your home

With all that being said, having cleaner air in your home can extend years on your life. Feel free to reach out to us if you have any questions about indoor air quality. (703) 483-2400

Indoor Air Quality (IAQ) picture


Ventilation plays a vital role in our Heating Ventilation and Air Conditioning (HVAC) systems. Having duct work that is properly sized and sealed can increase the comfort and decrease the utility cost of your home. Having the duct work installed properly when a new HVAC system is installed in your home is also a very important factor and can effect how noisy the system is. The benefits of having proper ventilation goes hand to hand with the indoor air quality in our homes.

Noisy Vents & Ducts: 

It is not uncommon to hear whistling, knocking, creaking, or bangs coming from your homes vents. These are all issues related to the ducting and ventilation system. Sometimes small holes need to be found and sealed, this can help the whistling disappear. Knocking or tapping sounds can be created from our ducts expanding in the winter time while running the heat. If the duct work is pressed tight to a wall or a joist with no room to expand it can make it even worse. Creaking and rattling noises are usually improperly installed ducting, debris inside of the ducting, or duct work that is coming loose. These can be as simple as tightening a few screws or connections, to having to replace the entire ventilation system. If you hear a loud bang or thump coming from your vents when the system cuts on and off, or shortly before or after. This is usually a sign that the duct work is undersized for the size of the HVAC system in your home. When too much air is being sucked through the return ducts, it can cause the ducts to bow inward, making a banging noise.When the system turns back off, the air flow stops, and it promptly bows back outward. This usually happens on the return side of the system.

Properly Sized Duct Work:

At Walker Heating & Air Conditioning, we understand that having proper ventilation is the key to the HVAC system. Having a system that is properly sized for your home is the most important part of any heating and air conditioning installation. If the temperature in your house is uneven, you may have a system that is over-sized or duct work that is not properly sized or fitted for your home. The best thing you can do is get a cooling and heating load calculation by an ACCA approved system such as Manual J, performed when you replace your HVAC system. This can ensure that you have a properly sized HVAC system for the ventilation in your home, with the least amount of ducting modifications. There are occasions when the entire ventilation system needs to be re-done. However, we have found that we can usually make the existing ducting work, so long as the central heating and air conditioning system is properly sized for the home. This usually requires modifications to the existing duct work if the HVAC system prior to the replacement is improperly sized.

If your in need of ventilation, ducting, or indoor air quality services from a licensed HVAC contractor, Give Walker Heating & Air Conditioning a call Today! (703) 483-2400


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Beth Donovan
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"They provide 10 star service! I had been dealing with another company through my home warranty service and was without AC for over 3 weeks. I finally called Walker Heating & Air, and Kevin was out the following day. He provided me with the best options without trying to oversell any extra services or equipment, which was a huge change from the previous company. "
Clint With
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"with quality Carrier equipment for significantly less than others had quoted. Professional work and completed on time. Very happy with the prompt and courteous service. We didn't hesitate to recommend him to friends and neighbors."
William Flavors
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"I was able to have my technician Kevin arrive only a few hours after I called. He arrived exactly when Walker HVAC said he would. Kevin was very respectful of my home and my time along with providing excellent service."
Tim M
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"Fast dependable service at very reasonable prices. Best experience with an honest HVAC Company."
Bruce Steakly
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"Quick, prompt response to my call. Kevin provided me with options and fulfilled my choices. Excellent!"