Now that the weather has cooled, you spend more time indoors being warm and comfortable. You rely on your furnace to keep your house toasty warm. But there are many things that can go wrong with your furnace, some come up more frequently than others.

There are several common problems you might experience this winter that will lead to frustration. Not all furnace problems require a call to a professional as you can solve them all on your own. Hage Energy, your HVAC service in Houston, offers common furnace problems.

Clogged Filter

If you are the type of person who changes out their furnace filter every two or three months, you probably never experience a clogged filter. But if you are the type of person who procrastinates, then a clogged filter could be a problem.

When the filter is clogged, your furnace has to work much harder to keep you warm and comfortable. This will greatly reduce the life of your furnace and cause high heating bills. Do yourself a favor and change out the filter on a regular basis and avoid high utility bills and other issues with your furnace.

Safety Switch

If your furnace is not operating, one of the first things you should check in the safety switch. The safety switch is located on the furnace door and prevents the system from turning on when the door is open.

Perhaps you opened the door for some reason and failed to close it all of the way, that would cause your furnace not to work.

Check Your Vents

If your heater is turned up and the house is still cold, one of the first things to check are the vents. Walk around the house and ensure that all of the vents are open and that nothing is blocking them.


If your furnace is not properly working, the issue might not be the furnace, but rather the thermostat.

Your thermostat is responsible for telling your furnace to start and stop. So even if your furnace is in excellent working condition, a bad thermostat will keep you in the cold. The first thing to do is check to see if your thermostat needs new batteries. If that isn’t the issue, you may have to buy another thermostat.

Poor Airflow

If your furnace turns on, but you can’t feel very much warm air coming from the vents, the most common problem in a clogged filter.

Other problems that lead to poor air flow include mechanical problems and leaks in the ductwork.

Pilot Light Problems

If your furnace doesn’t turn on, the problem could be the pilot light or electric ignition. If you have an older furnace with a pilot light, check to see if the flame is still burning. If your furnace has an electric ignition, give us a call so we can inspect it and diagnose the problem.

In fact, if you are having any type of problem with your furnace and can’t figure out what to do, give Hage Energy a call and we can help.