Air Quality


For true comfort throughout your home in spring, summer, winter and fall, contact Doug’s Heating & Air Conditioning for an air quality audit. We will review your furnace and air conditioner to determine the options you have to improve your home’s overall air quality.

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 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. Ask us about Sanuvox UV Lights, which have been studied independently and proven effective in destroying bacteria, viruses, mold, odors and other potentially harmful contaminants.

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 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.

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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Indoor Odors

September 20, 2017

Most people know the smell of abandoned leftovers in the fridge. Many have experienced the smell of their kids’ dirty laundry hidden under the bed. But did you know HVAC units can cause or transmit indoor odors as well? HVAC units are supposed to filter the air, adjust its temperature, and create an enjoyable in-house…

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AC Filter Maintenance

July 18, 2017

AC units don’t only regulate temperatures; they also contribute to your healthy breathing by improving air quality in your home. This only works if the filter is clean and therefore able to do its job! Cleaning or replacing your AC filter on a regular basis will do wonders for the air you breathe. These are…

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Indoor odors – where is that coming from?

July 19, 2016

We all know the smell of leftovers forgotten in the fridge for a week? Just imagine your entire place would suddenly start to smell funny, yet you are completely certain you’re innocent this time. Common reasons behind smell are humidity, lack of fresh air and chemicals. Many people aren’t even aware of a drop in…

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February 18, 2016

Doug’s Heating and Air Conditioning is now offering the REME HALO, an air treatment system that helps you maintain your health by reducing odors, air pollutants, chemical odors, dust particles, smoke, mold, bacteria and viruses. The REME HALO is thus a great device for people suffering from allergies and asthma, but also for people simply…

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Importance of Sealed Air Ducts

November 17, 2015

The body’s vascular system ensures the proper flow of blood through your body. Air ducts have a similar function for your house, as they ensure the proper flow of air. Insufficiently sealed air ducts result in a loss of heated or cooled air and inevitable high energy bills. A leaking duct in the attic can…

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Air Cleaners vs Air Purifiers

April 15, 2015

Air purifiers are used to destroy contaminants associated with asthma, allergies and respiratory infections. They can eliminate bacteria, viruses, mold, odors and other harmful contaminants. Air cleaners on the other hand, filter particles and contaminants out of your air conditioner. Air cleaners will keep your home clean by removing pollen, pet dander or farm dust.…

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Change your filter, save money!

October 16, 2014

Changing your filter is probably one of the easiest things you can do to maximize the life span of your furnace. By replacing your furnace air filter monthly, it doesn’t have to work as hard. When the furnace filter is dirty, it uses way more energy, thus you’ll see a spike in your energy bill.…

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High humidity doesn't just cramp your sense of style, it can be a vacation "hot spot" for unwanted guests

June 16, 2014

It’s that time of year when we start to enjoy the change over from spring to summer. However; with those changes comes higher humidity. These excessive humid conditions can cause mold and mildew to grow inside homes and businesses, both of which pose many potential health risks. These same humid moisture-saturated conditions lead to an…

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Questions? Contact us! >

"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