Your Go-To Furnace Troubleshooting Checklist

Guide to Troubleshooting Furnace Issues

Staying warm during cold months depends on how well the furnace functions for most homes with central heating. When your furnace is broken, staying warm is harder, especially if you don’t have other options to warm your home.

While most furnace issues are hard to determine, there are ways you can troubleshoot for problems and quickly find a fix. If your heating system is showing issues like not kicking on, or producing enough heat for your house, here is a list of ways to troubleshoot problems.

1. Check the Thermostat

One thing that sometimes gets overlooked when your first turn on a heater is making sure that it’s set to the heat setting or correct temperature. You’re not alone if you have ever forgotten to check to make sure that the thermostat was actually set to heat or that it was high enough to produce enough warmth. Try setting the thermostat to 90°F to make sure the thermostat doesn’t kick off while you’re troubleshooting.

Another thing to check for on your thermostat is to make sure that the batteries aren’t dead. Often, people forget that some thermostats need batteries, and after a while, they will need to be replaced. Replace the batteries, and if your home still doesn’t feel warm enough after making sure the batteries work, you should call a professional to troubleshoot for a bigger issue.

2. Check the Air Filters

All HVAC units have air filters that need to be checked and replaced regularly. Filters catch particles like dust and allergens that get stuck to the filter, and after a while, make your home’s heating and conditioning work harder. The general rule is to check your air filters monthly and at the most once every three months, depending on the size of your filters.

If your filters are clogged, then you may notice that your heater isn’t providing enough heat for your home, causing more trouble for your unit as a whole. Usually, a furnace will continue to run with a clogged filter, however, always change your filter, or rely on a professional to do it for you.

3. Check the Furnace for Power

If your furnace sounds like it’s having a hard time igniting, or if your blower is running, but you don’t feel the heat, then your furnace may have power. However, if you don’t notice these signs, then you don’t have power.

Troubleshoot for power to your furnace by checking the breaker, or even checking to see if your furnace has a small light that displays that the furnace is getting power. You can also check to see if the service switch on the furnace is on.

4. Check for Gas

Check the gas connection and make sure that all of the knobs and switches haven’t been tampered with or accidentally switched off.

Most furnaces are powered by gas and have a gas valve and furnace flame. If you notice the flame is out, you can light it yourself, however, we suggest you contact a professional to light it for you. If the flame is any color other than blue, then you should immediately call for a technician to diagnose and fix the problem.

In rare cases, your furnace can have a gas leak, which prevents your furnace from providing heat, and is very dangerous. If you suspect there is a leak, immediately evacuate your home and dial the fire department.

5. Check the Furnace Switch

Furnaces have a switch known as the furnace switch that looks like a light switch. Usually, the furnace switch doesn’t have a label, but it can be found either on the furnace or on a wall nearby within reach. Sometimes, people mistake this switch for a light switch and accidentally flip it off.

Contact AirCon to Troubleshoot Issues

While these aren’t the only ways to troubleshoot for problems with your furnace, our team at AirCon Service Company can locate and resolve any issues you may have with your furnace. Contact us when you need help troubleshooting or repairing your furnace at (281) 823-8771.