clean air

Indoor air quality matters

How healthy is the air inside your home? The truth is, your home may not be circulating the cleanest air possible, which can be harmful to your family in the long run.

Signs the air in your home needs improving

There are a number of reasons why your home may not be getting enough fresh air, which can cause a buildup of carbon dioxide, off-gassing of harmful chemicals, or allergens and irritants to start polluting the air in your home. Harmful air might even seep in from the crawlspace, attic, or garage, because excessive moisture creates a damp environment where bacteria can thrive. 

Unclean air can aggravate your allergies and asthma and dampness under circulated air can harbor bacteria and toxins, putting your immune system at risk as well.

6 signs your home’s air quality needs to be improved:

  1. People living in the house are frequently sick with upper-respiratory symptoms.
  2. Your home has significant dust buildup on air vents and surfaces.
  3. Some rooms are noticeably warmer or colder than others.
  4. The humidity level in your home is often lower or higher than 50%.
  5. There is evidence of mold or mildew.
  6. Your home has an unpleasant smell that you can’t get rid of.

Whole-Home Air Cleaners

A whole-home air-cleaning system from Donovan can create a cleaner, healthier indoor environment for you and your family. 

Humidity Solutions

Are you constantly adjusting the thermostat in your home? Feel uncomfortable even when the temperature is right? If you answered yes, you may need a home humidifier to balance the air at humidity levels that are right for you.

Air Filters

Did you know you can improve the air you breathe and drastically reduce the number of service calls by simply replacing your air filters regularly? Donovan offers FREE delivery on filters for our Preferred Customers!

Air Duct Cleaning

Dirty ducts lead to increased energy bills and poor indoor air quality. If you suspect your air is passing across moldy or mildew-covered ductwork, schedule a FREE appointment with Donovan for a ductwork inspection.


Are your family members often sick? Does your cooling system seem to run all the time and never turn off? If you answered yes, your house may be what we call excessively leaky or overly sealed. Donovan offers blower door testing to determine your home’s range of acceptable air infiltration.

Air Duct Replacement

If your home has damaged ductwork, your system cannot effectively deliver air where you need it.


We’re proud of the high-quality service we provide, and we stand behind our work with a 100% Satisfaction Guarantee.


To help make those solutions more convenient for you, we offer special financing options for our customers.

Contact us today about Air Duct Cleaning or Replacement

Why should I choose Donovan for air quality improvement?

For the past 30 years, residents of the Greater Jacksonville area have trusted Donovan Heat, Air, Electric to provide fast, friendly, and reliable service.

Here Are a few reasons why your Jacksonville area neighbors love and trust Donovan:

  • We’re the largest HVAC company in northeast Florida. 

  • Our customer service is unmatched.

  • The Donovan team is highly trained, honest, and dependable.

  • We offer upfront, flat-rate pricing with no hidden fees or extra labor charges.

  • Our work is backed by Donovan’s 100% Satisfaction Guarantee.

  • Our technicians are experienced and NATE-certified.

  • We arrive within minutes in our well-stocked vehicle and repair your problem quickly.

  • Donovan has been licensed, insured, and family-owned/operated since 1987.

  • We care about our customers—and we care about our community.

Talk with a Donovan Specialist Today

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