Why a Gas Furnace Dries Out Your Homes Air and What to Do About It

There’s a reason why air seems drier during cold weather than in the summer. That’s due to the fact warmer air carries more moisture, or humidity, than colder air.

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

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

Your Furnace’s Combustion Steps are a share the Issue

The fuel your furnace consumes isn’t the culprit responsible for making your home’s air appear dry. Rather, it’s the combustion procedures.

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 completely sealed.

A standard furnace, also called an atmosphere furnace, draws air from inside your house to work. Because the furnace continuously needs air to burn, it will also use cold, dry air from outdoors, which in turn affects your house’s humidity.

High-efficiency furnaces, also known as a sealed combustion furnace, are ideal for keeping your humidity even. They draw all their combustion air from outdoors, but it stays contained within the sealed furnace. As another perk, they keep your house more comfortable while consuming less energy. Switching 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 moves into your home during the winter. Reduced humidity means the air will rob moisture rapidly from your skin, lips, nose and throat. It also causes static electricity.

How to Balance Humidity in Your House

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

These are just a couple humidifier benefits you’ll acquire when you upgrade to a whole-home system.

Better Health During Cold and Flu Season

It’s common that cold weather is the worst time for colds, flu and other ailments. That’s since you’re more likely to become sick when your nose and throat are dry. Under particular airflow conditions, air at the right humidity level may also hamper the spread of some viruses. Additionally, it can reduce year-round allergy symptoms.

Relief from Dry Skin

If you have consistent dry skin or eczema, you realize just how uncomfortable those conditions can be during winter. Getting a whole-house humidifier will help your skin retain more moisture.

Improved Sleep

Maintaining 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.

Guards the Wood in Your Home

Cabinets, flooring, furniture and basically anything in your house that’s wood doesn’t like it when humidity is too low. This is due to the fact dry air pulls moisture from the wood and causes it to fracture. Keeping your home’s humidity at the correct level will keep your residence’s furnishings looking their best.

Little Maintenance Necessary

Between frequent filter changes and constant refilling, portable humidifiers expect a lot of upkeep. A whole-house humidifier only needs maintenance about once a year, which can be done in tandem with your furnace tune-up.

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

Book Your Free Home Comfort Consultation Today

If your residence’s air feels less than pleasant during cold weather, Service Experts Heating, Air Conditioning & Plumbing can help. Call us at 866-397-3787 to arrange a free home comfort consultation. There’s no obligation, just free Expert advice on how you can keep your home’s humidity at just the correct level. And, like our other services, our work is supported 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.