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- A lack of gas supply or a tripped breaker can prevent the furnace from receiving the energy it needs to operate. Leaking ducts or a clogged air vent might keep your system from running smoothly, and a malfunctioning thermostat can interfere with the warm air the system distributes.
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Oct 22, 2021 · Furnace making a clicking noise? Furnace not turning on? Learn about some of the common gas and electric furnace problems and how to resolve them.
- Dirty Furnace Filters. Is your furnace firing up but not blowing heat as hard as usual? Dirty air filters are often the culprit behind an inefficiently performing furnace.
- Thermostat Issues. It may sound incredibly simple, but the source of many a malfunctioning furnace is, in fact, the thermostat, which is the control centre of your heating system.
- Is the Furnace Turned On? We hate to ask but could the problem be that your furnace isn’t turned on? It sounds like a no-brainer, but if repairs or maintenance work were recently performed on your furnace and it’s not working for some reason, you may want to check to ensure that it was turned back on.
- Inspect Air Ducts. Have you noticed cold spots in your home even when hot air is coming out of the air vents? The problem could be the air ducts. Check for handles that protrude from the ducts – these are dampers that control airflow.
- Furnace Repair – The Basics. Your furnace is probably the most important appliance in your home. Unless you live somewhere that doesn’t get cold, ever, then, it’s literally the device that makes your house livable, along with the running water.
- Check the Thermostat. Before you assume you have a furnace problem, do some furnace troubleshooting and check the thermostat to make sure it’s actually telling the furnace to come on.
- Check the Breaker and Shut Off Switches. It sounds unbelievable, but furnace technicians often find that the only “repair” a furnace needs is to be turned on.
- Change the Furnace Filter. A clogged furnace filter can cause a furnace to shut off. Dirty filters are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won’t warm up.
- Start and Stop. If your furnace is cycling on and off, it’s because something in the system is causing it to cut off before it can complete a full heating cycle.
- Burner Flame Color. Next time you open up your natural-gas powered furnace, take a glance at the flame as it fires up. (Some models have peepholes to allow you to check the status of the flame without opening the service door.)
- Rusted Flue. Another potential sign of improperly vented CO is a rusted flue. If a leak from the roof or plumbing lines is causing rust and corrosion on your flue lines, it’s more than just unattractive.
- Moisture Buildup. If you notice that some rooms in your home have moisture either on the ceilings, walls or windows, that could be a sign that there isn’t sufficient airflow through your home.
- Make sure the thermostat is set to “Heat.” “This sounds obvious, but it’s true: A lot of people don’t have their thermostat set right,” says Bobby Difulgentiz, director of product management for Lennox International.
- Assess if it’s time to change your furnace filter. Filter-related failures are probably one of the most common furnace problems out there, primarily because homeowners forget about the filters, says Difulgentiz.
- Check the battery. Some thermostats are wired to the house’s electrical system, while others use batteries. How is yours powered? Sometimes those that use batteries will flash a low-battery symbol when they need a replacement, but the signal often goes unnoticed, says Bonner.
- Confirm that your furnace is getting power. You need to know if the furnace is getting electricity, so check. Most thermostats have a switch for the fan that says either “On” or “Auto” (which means that the fan turns on when the equipment comes on).
It's a whole different issue if your furnace is working poorly or not working at all. With a little do-it-yourself experience, you can troubleshoot and repair your furnace yourself. Your best bet though, is to have a maintenance check list for your heating system to avoid the problem.
Jan 10, 2024 · January 10, 2024. Need furnace help NOW? Get a Local Heating Pro Fast! If your furnace doesn’t heat or works poorly, this expert DIY guide will help you troubleshoot and fix typical problems. In This Article: Furnace Not Working — No Gas Flame. Heating or Cycling Problems. Furnace Does Not Blow Air. Blower Runs Continuously.
