With nights (and days) getting colder, a furnace isn’t a luxury — it’s a necessity.
Most people don’t have any idea what steps to take when their furnace breaks.
If your furnace stopped working on a chilly night, would you know what to do?
You will if you read today’s post. Take a minute and read our guide on troubleshooting a non-working furnace.
Have You Changed Your Air Filter Lately?
You might not think something as simple as an air filter could prevent your furnace from working.
However, clogged furnace filters can cause a furnace to shut down — and here’s why.
The air filter on a furnace traps dust, pet hair, and other debris. Clogged filters restrict airflow, which can cause the heat exchanger to overheat and shut down.
Don’t let changing your furnace filter intimidate you! Check your owner’s manual for instructions. Also, in the future, change the filters once a month.
Check Your Thermostat Settings
Before you go into panic mode over a furnace not turning on, check the thermostat.
Often, the only furnace problem you have is a communication issue between the furnace and the thermostat.
First, make sure your thermostat is set to HEAT rather than COOL. Don’t laugh — ask your HVAC technician how many times they’ve answered a call for a furnace breakdown only to discover an incorrect thermostat setting.
Now, check the temperature setting. Your thermostat will show the room temperature and the temperature that makes the furnace kick on. Bump the thermostat up 5 degrees and wait for the furnace to turn on.
If you can’t get the furnace to turn on at this point, try changing the batteries and gently blowing dust from inside the unit.
When these steps don’t work, call your HVAC technician. You may have a faulty wire or another thermostat issue.
Pilot Lights and Breakers
Don’t go any further before you verify the furnace switch is in the ON position.
If so, move on to the next tip.
A tripped circuit can cause a furnace to stop working. Remember, even if your furnace uses natural gas or oil, it still uses electricity to operate the mechanical parts.
Find your electrical panel and check for a tripped breaker. If you find one, re-set it and see if it trips again when the furnace comes on. Tripped circuits indicate a system overload and if your furnace continues tripping the breaker, you’ll need to call for service.
Does your furnace have a pilot light? Make sure it’s lit! If your furnace has electronic ignition, check and make sure the element heats up.
Has Your Furnace Stopped Working?
If you’ve changed the air filter, checked the thermostat, and made sure breakers, switches, and the pilot light work, what’s next?
If your furnace stopped working and you’ve tried these troubleshooting tips to no avail, It’s time to call your HVAC company.
Our HVAC specialists are available now!
Contact us and let’s get things warm and cozy again in your home.