Why a Gas Furnace Dries Out Your Residences Air and How to Solve It

There’s a reason why air feels drier in the winter than when it’s hotter. That’s since warmer air holds more moisture, or humidity, than colder air. 

The same is true for your the U.S. house. Starting your gas furnace makes your house feel warmer but can also dry out the indoor air. Dry air can transport a whole host of ailments, including dry skin, cracked lips and make you more likely to get sick. 

Here’s why your gas furnace dries out your house’s air and what you can do to resolve it. 

Your Furnace’s Combustion Procedures are a Portion of the Trouble 

The fuel your furnace uses isn’t the thing responsible for making your house’s air feel dry. Rather, it’s the way it combusts. 

There are two different types of gas furnaces, standard and high efficiency. With an older standard furnace, you can see light from the burners when it’s working. A newer, high-efficiency furnace is entirely sealed. 

A standard furnace, also known as an atmosphere furnace, pulls air from inside your house to function. Because the furnace consistently needs air to burn, it will also draw in cold, dry air from outdoors, which in turn affects your home’s humidity. 

High-efficiency furnaces, also known as a sealed combustion furnace, are best for keeping your humidity balanced. They take all their combustion air from outside, but it stays trapped in the sealed furnace. As an additional bonus, they keep your house more comfy while requiring less energy. Moving to an ENERGY STAR® furnace from an old furnace may save you as much as 40% on heating costs, according to Lennox®. 

In addition to combustion, cold air also naturally seeps into your house during the winter. Reduced humidity means the air will rob moisture rapidly from your skin, lips, nose and throat. It’s also to blame for static electricity. 

How to Even Out Humidity in Your Residence 

Using a humidifier. While a portable humidifier can only make one room pleasant at a time, a whole-house humidifier will transport that comfort throughout your home. 

These are just a small number of humidifier benefits you’ll acquire when you switch to a whole-home system. 

Improved Health During Cold and Flu Season 

It’s common that winter is the worst time for colds, flu and other illnesses. That’s because you’re more likely to become sick when your nose and throat are dry. Under specific airflow conditions, air at the right humidity level might also slow the spread of some viruses. In addition, it can weaken year-round allergy symptoms. 

Soothes Dry Skin 

If you have consistently dry skin or eczema, you recognize just how uncomfortable those conditions make you during winter. Adding a whole-house humidifier will help your skin keep more moisture. 

Better Sleep 

Keeping your bedroom at the right temperature and humidity level will keep you comfortable at night. It can also decrease loud snoring, since your throat and nose will be better hydrated. 

Protects the Wood in Your House 

Cabinets, flooring, furniture and basically anything in your home that’s wood is affected when humidity is too low. This is due to the fact dry air pulls moisture from the wood and causes it to split. Keeping your home’s humidity at the proper level will keep your residence’s furnishings looking their best. 

Little Maintenance Necessary 

Between regular filter changes and continuous refilling, portable humidifiers require a lot of upkeep. A whole-house humidifier only needs maintenance about once a year, which can be performed at the same time as your furnace tune-up. 

A steam humidifier has the least amount of maintenance since it doesn’t require a pad. It retains water in a canister and boils it into steam that gets transported through your ductwork. Since it’s independently powered, it can be in use when the furnace is off. 

Book Your Free Home Comfort Consultation Today 

If your house’s air feels less than pleasant during colder weather, Service Experts Heating, Air Conditioning & Plumbing can help. Call us at 866-397-3787 to set up a free home comfort consultation. There’s no obligation, just free Expert advice on how you can balance your residence’s humidity at just the correct level. And, like our other services, our work is protected by our well-known 100% Satisfaction Guarantee for one year.* 


*Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions. 

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