Furnace trouble by the numbers: energy, fire and air
Heating uses about 42% of the energy in U.S. homes, and heating equipment is linked to about 48,530 home fires a year. Clean filters, sealed ducts, working CO alarms and a yearly furnace check help keep those numbers from becoming your problem.
By Beaumont Furnace Fix · Updated October 14, 2026 · 4-minute read
Beaumont Furnace Fix is a locally owned and operated furnace repair company based in Beaumont, California, serving Beaumont and nearby towns. Call us for furnace repair, tune-ups and replacement.
Furnace trouble by the numbers: four key statistics
A broken furnace feels like your problem alone. But heating trouble adds up across the country in wasted energy, house fires, sick days and dirty air.
Why look at national numbers? Because the same small habits that keep your house warm also help keep these numbers down.
- Share of home energy used for space heating (2020)42%U.S. EIA
- Air lost from a typical home duct system20–30%U.S. EPA
- Home heating fires that happen December to February48%NFPA
| Area | The national picture | The simple fix at home |
|---|---|---|
| Energy | Space heating uses 42% of all the energy in U.S. homes. | A clean filter and sealed ductwork mean less gas burned for the same heat. |
| Fire | About 48,530 home heating fires a year, with about 500 deaths and about 1.1 billion dollars in property damage (2014–2018 average). | Keep space heaters 3 feet from anything that burns. Have the furnace checked every fall. |
| Health | More than 400 deaths and over 20,000 ER visits a year from accidental carbon monoxide. | Working CO alarms near bedrooms. Never ignore a yellow flame. |
| Air | About 4 million home furnaces in the South Coast AQMD region. Home gas heating put out about 9.5 tons of NOx a day in 2012. | New gas furnaces here must meet the 14 ng/J low-NOx limit. |
Sources: U.S. EIA, space heating share (2023) · U.S. EPA, duct sealing guide · NFPA, home heating fire data · Wikipedia, carbon monoxide poisoning · South Coast AQMD, Rule 1111 staff report
Small furnace habits that lower your risk
You can't change a national average. You can change what happens in your own house. These habits are free or close to it.
- Change the filter on timeA clean filter helps air move, so the furnace works less for the same heat.
- Test CO alarmsPut one near bedrooms and press the test button when the clocks change.
- Keep space heaters 3 feet awayFrom curtains, beds, couches and anything that burns.
- Book the fall checkA yearly look at the burners, sensor and vent catches small problems early.
Not sure which habit matters most for you? Start with the fall tune-up checklist. If your furnace is already acting up, the diagnostics page explains what a full safety check covers.
What these furnace numbers mean in the San Gorgonio Pass
Beaumont, Cherry Valley, Banning, Calimesa and Yucaipa fall in the South Coast AQMD area, where rules aim to cut the nitrogen oxides (NOx) that gas appliances release.
That's why a new gas furnace here has to meet a low-NOx limit. If you're weighing a swap, the replacement page explains what to ask about.
Cold nights in the Pass also mean the heater works hard from November on. Wasted energy shows up in more than your gas bill, so a furnace that runs clean and a duct system that doesn't leak both help.
Check the source: every figure on this page links to the group that published it. Numbers are national or regional averages, not predictions for your house.
Furnace energy and safety FAQs
How much of a home's energy goes to heating?
About 42% of the energy used in U.S. homes goes to space heating, according to the U.S. Energy Information Administration. That's more than any other use in the average home.
A clean filter, sealed ducts and a furnace that's tuned up each fall can help you use less gas for the same warmth.
How common are home heating fires?
The NFPA reports about 48,530 home heating fires a year in the U.S. They cause roughly 500 deaths and about 1.1 billion dollars in property damage, based on a 2014 to 2018 average.
Space heaters placed too close to furniture and unclean equipment are leading factors, so keep heaters 3 feet clear.
Can a furnace leak carbon monoxide?
Yes, a damaged heat exchanger or a blocked vent can let carbon monoxide into a home. The gas has no smell or color.
That's why CO alarms near bedrooms matter. If an alarm sounds, get everyone outside, call 911, and don't go back in until responders say it's safe.
Do leaky ducts waste heat?
Yes, the U.S. EPA says a typical home loses 20 to 30 percent of the air moving through its ducts. Leaks in attics and crawl spaces waste heat before it reaches your rooms.
Sealing ducts and keeping filters clean can help your furnace deliver more of the warmth it makes.
Why do new gas furnaces in the Pass have to meet a low-NOx rule?
South Coast AQMD limits nitrogen oxides from gas furnaces to help clean the regional air. New gas units sold in the district need to meet a 14 ng/J limit.
Ask any installer to show the model's label and confirm in writing that it complies before you agree to a replacement.
