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You know how weather goes this time of year in the Treasure Valley.

One minute you’re cranking the A/C, the next minute you’re pulling out the Swiss Miss and the blankets.

When things start to get chilly, the last thing you want are to have furnace problems. Here are 6 common furnace problems and how to deal with them.

 

No Heat or Not Enough Heat

There are plenty of reasons why your system might not be heating as well as you’d like or is not heating at all. Before you do anything else, make sure the thermostat is truly set to “Heat” and not just “Fan”.

If there is still no heat after verifying the thermostat is set to “Heat”, try checking the breakers.

If the circuit that controls the furnace is in the middle or is off, turn the circuit all the way off, and then turn it back on. Wait a bit to see if heat starts coming out of the vents. If not, try checking your air filters. If they are dirty, replace them.

Air filters should be replaced on a regular basis, usually every 1-3 months. If your air filters are dirty, your furnace has to work much harder and it can lead to more breakdowns.

 

Blower Constantly Running

If your system is constantly running and the blower is always on, it may indicate a problem with the limit switch. The limit switch is a device that’s located under the furnace plenum, or air distribution box, that shuts off the furnace if the plenum gets too hot.

A faulty limit switch can be problematic and should be replaced by a furnace repair technician.

 

Portrait young annoyed, unhappy, stressed woman covering her ears, looking up, to say, stop making loud noise, giving me headache isolated grey background with copy space. Negative emotion reaction

 

Furnace is Loud When Running

Granted, furnaces create noise when they run, but if you are hearing noises like squeaking, rattling or rumbling, that could indicate a mechanical problem or a clogged burner. Mechanical problems like an improperly adjusted pilot light or a blower motor that needs oiling are common issues when dealing with unfamiliar furnace sounds.

Make a note of the kind of noises you are hearing so that you can describe the problem to your technician.

 

Frequent Cycling

Normally, the heat comes on every now and again to maintain the temperature in your home. If your furnace is frequently turning on and off, it can indicate a clogged air filter or a blower motor problem.

If you have not recently replaced your air filter, start there, and if the problem persists, it is probably time to call a professional.

 

Carbon monoxide alarm isolated over white

Cracked Heat Exchanger

Over time, cracks can develop in your furnace heat exchanger. This can be a very dangerous problem as the crack can allow carbon monoxide to enter into your home.

If your carbon monoxide detector is giving you warnings, that could mean a crack in the heat exchanger or a problem with the exhaust vent. Carbon monoxide can be deadly so DON’T WAIT to call a technician to come fix the issue for you.

 

Thermostat Not Working Properly

Believe it or not, most thermostats are powered by a battery, rather than powered through your home’s regular power system. By not having enough power, a thermostat can malfunction, leading to improper heating of your home.

If your thermostat is giving you troubles, try replacing the battery, as this will fix most thermostats. If you’ve replaced the battery and the thermostat is still malfunctioning, it’s time to get it inspected and possibly replaced.

 

Generally, furnace repairs should be left to the professionals. Give us a call at (208) 205-9078.