Air Quality

Furnace Inspection

Purity, cleanliness and humidity are important to your lungs and to your home. Today’s homes are built much tighter. Airborne contaminants and particles can linger and recirculate dust and allergens throughout your home. We can now control air quality better than ever with the latest technology in air purifiers, air cleaners and humidifiers.

Air Purifiers

An air purifier acts like the sun, using UV rays to destroy certain contaminants associated with asthma, allergies and respiratory infections. 

Air Cleaners

Filter airborne particles and contaminants out of your heated or conditioned air with the Honeywell brand of Whole-House Media Air Cleaners and Whole-House HEPA Air Cleaner. Keep your house cleaner by removing pollen, dander and road or farm dust. The top-of-the-line HEPA Air Cleaner provides three stages of filtration, adding up to the cleanest air possible for you and your family.


Make your home feel warmer in our cold Quad Cities winter without turning up the heat! A Honeywell Whole-House Evaporative Humidification System enhances your home’s comfort in winter while increasing energy efficiency, too. The automatic sensor in this humidifier system conserves water, operates quietly and indicates when you need new replacement pads. There’s no waste, no worry and no hassle, because it’s linked to your heating and air conditioning systems to constantly maintain a healthy level of humidity for your family and your possessions.

Would Your Home Benefit from a Bryant Heat Pump?

April 25, 2022

Bryant makes some of the best heat pumps available. As All Things HVAC reports, Bryant is one of the oldest brands in the industry and is now a subsidiary of Carrier. Bryant has one of the most comprehensive product lineups in the industry, which is one of the reasons we recommend their products. We can…

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How Clean is the Air in Your Home?

April 11, 2022

We are now at the end of Winter and your home has been closed up all season. It’s time to look at the air quality in your home to see how you can breathe a little easier. As you look to turn on your air conditioner for the season, be sure to have your system…

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What are the most common indoor air pollutants?

December 16, 2021

One of the most wonderful things about the Quad Cities is the variety of homes in our neighborhoods. There are a lot of areas of the country where every house in every neighborhood looks the same, as if they’ve been stamped onto lots with cookie cutters. We have a lot of beautiful new homes in…

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What are the most common indoor air pollutants?

June 16, 2021

Itchy eyes, stuffy nose, sore throat; these are things we expect to happen because of allergies when we’re outside. However, when you start to feel this way when you’re inside the comfort of your own home, it is time to figure out what is happening. Your body will thank you later! Turns out, you might…

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How to Prevent Negative Impacts of Dry Winter Air on Your Family and Home

October 22, 2020

Your loved ones are most likely to suffer from the consequences of dry air in semi-arid climates and during the cold of winter when the furnace’s heat eradicates most of the humidity. The latter, especially impacts most Quad Cities Area households. Dry air may… Cause sore throats and dry skin which may be confused with…

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Reducing Airborne Contaminants and Particles

May 8, 2020

Protecting your home and business from airborne contaminants and particles has never been more relevant. The increased demand for air purifiers and air cleaners is certainly a positive development, but we recommend going through a quick air audit first. This audit consists of our team reviewing your furnace and air conditioning to get a better…

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Air Scrubbers – Protecting your Home from Germs and Bacteria

March 20, 2020

Installing an Air Scrubber is a quick and effective way to keep out germs and bacteria. Here are some of the immediate benefits: Air Scrubbers protect vulnerable populations with allergies or weak immune systems. They help reduce dust and irritants to prevent sneezing or runny noses. This again limits any sickness from spreading within your…

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What do you need to know about the Freon Phase out?

September 23, 2019

If you are using an AC unit made prior to 2010, then you are likely using a R22 refrigerant (a.k.a. freon), which will be discontinued by 2020 per the EPA’s ruling. Any AC unit made after 2010 shouldn’t be using R22 refrigerant, so this blog is only for those of you who have a model…

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The Inside Scoop on HVAC: Common Myths Debunked

April 18, 2018

Myth I: I Only Need to Replace My Filter Every 90 days Reality: Filter maintenance is one of the easiest and most cost effective things you can do to help your system run efficiently and last for years to come. Often, customers will purchase a 90 day filter and leave it in their system assuming…

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Breathe Easy by Improving Your Home’s Air Quality, It’s Easy!

March 26, 2018

The average person spends almost 90% of their time indoors on any given day and well over half of that time is within their home. Indoor air doesn’t like to circulate on its own and can result in stagnant, allergen filled air that we are constantly breathing. Keeping a high level of air quality within…

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"Just to let you know your crew did a wonderful job.  Very professional and yet friendly.  Extremely knowledgeable and cleaned up everything as if they were never here.  We would recommend Doug’s to anyone."

— Jolene,  Colona, IL

“We had a very courteous estimator. He showed up on time. We couldn’t ask for a nicer guy. He took about 45-minutes or so, but was very thorough.”

— Jim, Coal Valley, IL

“They wear shoe protectors. They’re very careful and courteous with your property.”

— Jim, Coal Valley, IL

“Prompt, courteous, very professional workmanship...they did a very nice job.”

— Jim, Coal Valley, IL

“They came out exactly when they said they would be here.”

— Gloria, Coal Valley, IL

“The service technicians are like friends. They are very courteous to us, and take the time to explain any questions we have.”

— Gloria, Coal Valley, IL

“Actually I searched around to have my geothermal serviced and they were not only one of the first, but they were one of the only ones that knew how to service the geothermal and knew about geothermal.”

— Vicky, Moline, IL

“I felt like they knew exactly what they were doing. They were on time.  That's important to me, because I work.”

— Vicky, Moline, IL

“I would say they were one of the first companies that I could find that can service geothermal heating.”

— Vicky, Moline, IL

“They stand behind what they sell and they’re there for you.”

— Gail, Moline, IL

“They respect our home.”

—Gail, Moline, IL

“We’re just really happy. We call them for everything.”

— Gail, Moline, IL

“I would recommend them over any other heating and air conditioning company in the Quad Cities.”

— Richard, Moline, IL

“They're courteous, they come on time. They come when they say they're gonna come and they get the job done.”

— Richard, Moline, IL

“They are efficient. They are always on time and very friendly staff.”

— Hemispheres Bistro, Bettendorf

“The exhaust system works perfectly. I mean it’s designed really, really well.”

— Hemispheres Bistro, Bettendorf

"We have a NEW Heating & Air Conditioning System from Doug's & we are VERY HAPPY with it."

— John from Moline, IL

"In this crazy mixed up world where most companies are only focused on money it was great to find a company that honestly cares. I can’t say thank you enough for the great customer service we have received!"

— Sarah from Davenport, IA

"Doug's just made our day! They were here within 3 hours to fix our dead furnace, less than an hour after they arrived we have heat! Thanks so much!"

— Ryan from Rock Island, IL

"Please know that Ben was so very pleasant when he serviced our generator. His kindness toward our little 4 year old grandson left quite an impression...who knows, our little guy may decide on a Htg/AC career and come ask you for a job!"

— Carole from East Moline

"I've owned this house for 7 years and the heating system has never worked as well as it does now!"

— Jim from Moline, IL

"I wanted to let you know that Matt was such a nice man while helping us with our estimate!"

— Mary from Sterling, IL

"I want to commend Ben at Doug's Heating and Air Conditioning on his professionalism and courteousness!"

— Connie from Moline, IL