Why Is My Furnace Not Turning On?

According to a recent study, the average price of utilities in Pittsburgh is around $171.52. If you are paying for utilities, you most likely want to keep your HVAC system running efficiently. Unfortunately, sometimes parts like the furnace may not work how they should.

The question of why is my furnace not turning on is not uncommon. There are several possible reasons ranging from a broken furnace to a flipped switch. Let’s look at the most common reasons and what you should do about it.


Thermostat Problems

If your furnace is not turning on automatically, there are a few reasons that don’t necessarily indicate there is a larger issue. If one of these is the case, you can usually check it and fix it yourself.

A seemingly obvious, yet often overlooked, issue is that your thermostat is either not on or is not working correctly. Make sure to check that it is on and set to a temperature higher than the temperature in your house.

You should also check for an error code on the thermostat. This can tell you what the problem is, making it easier to find a solution.

Switches and Valves

If your thermostat is running fine, there is another easy fix you can try. Turn the fan switch “on”. This can help force the furnace to start blowing air, as sometimes all it needs is a little push to get started.

You should also make sure the gas valve is turned on. It can get closed by someone working on the furnace or just by accident. Then, make sure another gas appliance is working. If not, you might have a gas leak, so call 9-1-1 immediately.

Occasionally, the switch inside your furnace may get switched off. If your furnace won’t turn on, make sure the switch is switched on. You should also make sure the breaker to the furnace is not tripped. If it trips multiple times, though, you’ll need to call a furnace repair technician.

Clogged Air Filter

Another common reason for a furnace not turning on automatically is that the air filter is clogged. The restricted airflow can make the heat in the heat exchanger increase continually. This would cause the furnace to malfunction.

If your filter is clogged, you should replace it right away. To keep your furnace running efficiently, you should replace it every one to three months.

Failing to Ignite

A furnace failing to ignite is one of the most common reasons that a furnace won’t turn on. This is a problem with forced air gas furnaces, which is the most common type of furnace.

If this is the problem, you might hear the clicking sound that accompanies your furnace coming on. However, then it may change to silence and not produce any heat.

There may be a problem with the ignition sensor. While this is something some people can fix on their own, oftentimes, it’s best to call an HVAC repair company.

Why Is My Furnace Not Turning On?

If you are asking yourself why is my furnace not turning on, there may be several issues. The easiest and most reliable way to figure it out is to contact your local repair company. They can diagnose what the problem is and determine a plan to fix it.

If you found this article helpful, be sure to check out our other real estate and home articles too.

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