Furnace Problems? Here is THE troubleshooting guide

furnace problems

We are here to help! Winter has barely arrived, but the cold weather has already had some very real impacts on many homeowners. Perhaps the most common of these is the furnace not working – for all different reasons. The first thing to do is to check for possible problems with the electricity to your furnace. Without power, the furnace is useless. If the power is on, then some other issue needs to be addressed. Common problems that cause a furnace not to work are loose wires, improperly vented gas furnace, dirty filter, dirty burners, inadequate gas flow, inadequate air flow, wrong circuit board parts. If you identify one of these issues you can call an expert to come help you!

The furnace is blowing cold air

If your furnace is blowing cold air, it could be a variety of things that could potentially cause this problem. Here is a troubleshooting guide to help pinpoint the problem.

First, the intake and outlet pipes must be clean and unblocked. Inspect the furnace and check to see if you can see openings of any size on either side of the furnace, both on the top and on the bottom. If you see such holes of openings, try to clean them with a vacuum cleaner. If this does not work, try using a small wire to remove any blockages. If this still does not yield any results, it may be worthwhile to call a professional.

Second, check that your thermostat is set to the correct temperature. Check and make sure the thermostat is turned to the corresponding temperature. This may be an issue with your thermostat and you may need to replace it.

The furnace won’t reach set temperature

Furnace problems can be a real hassle. Don’t take a furnace issue as a small thing, as it can lead to much more serious problems if not dealt with quickly. The first thing you should check is that all the vents have been closed to the room being heated. If the vent has been left open, the heating system will work harder, raising the heating bills and causing the furnace to break down sooner. In addition, make sure you have a professional air-duct cleaning annually to make sure your heating system is working efficiently.

If the temperature is still not regulated, or if the furnace is making a strange noise, call a professional immediately.

The furnace won’t stay on

Do you know what to do if your furnace is not staying lit? If your furnace is not staying lit, you might have a problem with the thermostat or a problem with a wiring issue. Generally a gas furnace will not stay lit if the thermostat is set too low. If the thermostat is properly set, a gas furnace will not stay lit if there is a problem with the wiring. Here is a troubleshooting guide.

The furnace is not blowing hot air

If the furnace has been running and the vents are blowing cold air, then there is likely a blockage in the air ducts or a heating unit is not turned on. If the vents are blowing warm air but the heating unit is not turned on, the furnace might have a problem with continuity of power to the furnace.

In order to locate any problems with continuity of power to the furnace, use a multimeter to see if there is continuity of power to the wires that run from the furnace to a set of four terminals found on a power box near the furnace. If there is no continuity, then it is likely that there is a faulty switch or a faulty heat relay. 

The furnace makes a whistling sound

I think it is normal for furnaces to make certain sounds to let us know they are working. It sounds like your furnace could have a small leak in the gas line that is causing the noise. If you are hearing this whistling sound even when the furnace is not in use, you do not want to keep running the furnace. This could cause your gas bill to shoot up. I recommend checking all of your vents in your house to make sure they are not clogged. If the vent is clogged, you will need to clean it or replace it in order for the gas to flow smoothly in your furnace.

The furnace does not ignite

Newer furnaces, like mine, are now equipped with automatic safety features that can detect an impending problem with the furnace before it’s too late. For instance, it will shut down if the temperature inside the furnace reaches a certain point, or if the temperature in the home’s living area reaches a certain point, like 72 degrees Fahrenheit. There can also be a problem with the ignition device, which is why it is important to call your HVAC contractor to take care of it as soon as possible.

If you are experiencing the issue of the furnace not igniting, you may need to switch out your pilot light or replace it with a new one. You might  also have a gas leak, which you can deter by switching your furnace’s gas shutoff valve to the off position before you attempt any of the following steps.

The furnace takes a long time to turn on

At the point when the air outside is chilly, you would prefer not to be battling with an ice-covered home to get cozy. It can take time for a well-maintained furnace to turn on, however, it is critical to keep it in great shape. Every now and then, the thermostat might be set low, which could prompt the furnace to fire up at a lower temperature. Furthermore, the pilot light may have gone out, which could prompt the furnace not to work at all.