Why Is My Heater Not Turning On?

Why Is My Heater Not Turning On?

two cold people

The winter months are creeping back around the corner and the weather reports indicate that this is going to be a colder season than most. That means it’s time to kick the heater up and prepare for hibernation. But, if your heater is not turning on, you have a little more work to do before you can start baking pumpkin pies and zoning out to Netflix.

Whether you’re a self-declared handyman or complete novice in the realm of home repairs, we’re here to outline some of the most basic reasons your heat is not turning on. Keep reading to learn more.

Heater Not Turning On? Here’s Why

Before you call the HVAC specialist, take a look at some of these most basic explanations for why your heater is not working.


It may seem silly, but the first thing to check when you’re not sure how to turn on the furnace is the power source. Gas systems use electricity, too, so it’s important to inspect the power cord for damage and make sure the power switch is ‘on’. Also, check the control board for the entire system to be sure there are no shorts.


Of course, it’s always worth a second look to ensure that the thermostat is set to the heating position. Make sure the temperature is set to a higher setting than the current temperature in your home.

Pilot Light

One of the most common causes of heaters not starting at the beginning of the season is the pilot light. Make sure the flame is lit and check to ensure that it reaches the thermocouple switch. Also, check the assembly and sensor for dirt to keep the flame burning.


Your heating system will not function properly if there is any disruption in the gas line. Make sure to call an HVAC professional right away if you smell gas.


Luckily, if your blower is malfunctioning, you’ll see a red light or the green light will flash. This is an indication that your blower motor, run capacitor, and/or control board has a problem.

Condensate Pan

Always make sure your condensate pan is empty and check the pipe for blockages. If the pipe is blocked, it could be an indication that you need a new heat pump.

Heat Pump

The best way to prevent your heat pump from going out is preventative maintenance like changing your filters and keeping your ducts clean. 

Final Thoughts

If you find your heater not turning on as the weather begins to cool and these reasons don’t solve the problem, it may be time to contact an HVAC repair contractor. They can service your unit and detect any malfunctions that could be causing the issue so that you can warm up and cozy in for the winter with a little peace of mind. 

When you need help, we are here for you! Feel free to contact us with any questions you may have. We can get you back up and running in a jiffy with friendly service and competitive rates.