9 Common Furnace Problems & Their Solutions

Furnace problems are not only annoying, but they can be costly. If you want to avoid any bigger issues in the future, it is wise to keep on top of furnace repair in Frisco, TX. But how would you know something isn’t normal with your furnace?

Here are some common furnace problems and how to solve them:

Not Getting Enough Heat from Your Furnace 

If the number displayed on the thermostat does not match what you feel indoors, then there’s definitely a problem. There are plenty of things that can keep a furnace from providing enough heat. A dirty furnace filter is the most common reason.

Did you know that dirty furnace filters not only restrict the airflow of your system but also reduce its efficiency by more than 10%? So check your filter if you’re not getting enough heat from the furnace.

It’s also possible that your unit has more severe problems, such as low gas pressure (caused by insufficient line pressure), a bad limit switch or thermostat, or a bad gas valve.

You should call a licensed furnace repair technician in Frisco, TX to perform diagnostics and repairs on these components before using the heating unit again and causing further damage to the system.

Furnace Won’t Turn On 

It’s definitely frustrating to go home and find your furnace not working. But sometimes, this happens just because the unit isn’t receiving power. There may be a power outage, tripped circuit breaker, low voltage at the utility panel (bad thermostat), bad limit switch, short circuit in wiring, broken fan belt or seized blower wheel, clogged condensate drain line, etc. 

If you suspect that there is no power reaching your furnace, contact an electrician for investigation ASAP to prevent any more serious problems with your home’s electrical system later on! But if all power readings are normal, your furnace repair technician in Frisco, TX should be called to inspect the heating unit.

The same rule applies if you suspect that there is no fuel reaching your furnace – call a plumber immediately to investigate what could be preventing natural gas or propane from being supplied to the unit before it’s too late!

Furnace Leaking Water

You may have a leaky furnace – and no, that is not normal. Standard efficiency furnaces that are working properly shouldn’t have a condensation leak. The leak can happen when there’s a problem with the unit’s exhaust or flue pipe.

Even high-efficiency furnaces, which generally produce water when extracting heat from the combustion gasses, aren’t supposed to leak water. Furnaces come with condensation drains that catch the condensate. 

So if you find puddles of water under your high-efficiency furnace, there’s likely a problem with the condensation drain. It probably has holes or is clogged and requires a furnace repair service in Frisco, TX.

Furnace Runs Constantly

One of the common reasons why a furnace runs constantly is dirty air filters. Over time, filters get clogged with dirt, debris, and other particles that impede airflow. The furnace has to work extra hard to heat your home or space with poor airflow. In this case, you may be able to fix the problem by replacing or cleaning the filter.

A wrong thermostat setting can also cause this problem. The blower will constantly run if the thermostat is set to “on” instead of auto. You may be able to solve the problem by changing the setting to “auto.” 

If the filter is clean and the thermostat is set to auto, you may have set the thermostat’s setting too high, and it’s too cold outside. The furnace will have to constantly run to keep up with the outdoor temperature. 

Furnace Overheating 

There are several reasons why your furnace could overheat, including blocked airflow from dirty filters, broken belt on blower wheel, and loose fan blade(s). Dirty air registers, clogged condensate drain, dirty or poorly positioned heating/cooling coils or even a failing blower motor may also result in furnace overheating.

Each of these problems should be addressed quickly to avoid further damage and costly repairs down the road. But since there are many possible reasons behind furnace overheating, it would be best to contact your trusted furnace repair technician in Frisco, TX for proper diagnosis and reliable repair service.

Pilot Light Won’t Stay Lit

If the pilot light does not stay lit, you cannot rely on the furnace to provide you with heat. There are many reasons why a pilot light won’t stay lit, like a dirty orifice. The dirt in the orifice will impede the gas and make the flame weak. In this case, cleaning the orifice may solve your pilot light issue.

This problem could also be caused by another component failure, such as a bad thermocouple. The thermocouple is what opens the gas valve when it detects flame. The device can fail to seethe flame and close the gas valve if it’s worn out, broken, or just dirty.

If you’re not confident fixing this issue, contact a professional furnace repair technician in Frisco, TXfor service so you can prevent further damage from being done to your heating system.

For emergency heating repair, you can always rely on our team. We not only offer new installations, but our maintenance contracts will keep your HVAC equipment running smoothly all year round!

Cracked Heat Exchanger

Carbon monoxide is a by-product of your furnace’s combustion process. If mixed with the indoor, clean air, this gas can pose harm to you and your family’s health. A heat exchanger is a component of your furnace responsible for directing carbon monoxide outdoors safely. While this furnace part is durable, it can still get damaged over time. 

A crack in the heat exchanger means danger to your family. The poisonous carbon monoxide may leak and mix with the heated air and may be inhaled by the house occupants. Generally, a cracked heat exchanger shouldn’t be salvaged. While a replacement may cost you some bucks, it’s safer than keeping a cracked heat exchanger. 

So if anyone in your family experiences symptoms such as light-headedness or headaches on a regular basis, then there are likely high levels of carbon monoxide in your home. You should immediately turn your furnace off and let a professional furnace repair technician in Frisco, TX fix the problem.

Faulty Limit Switch

The limit switch is a safety device that prevents the burners from overheating. When your furnace first starts up, it will circulate room air until it reaches a certain temperature on the thermostat and then turn on the gas burners to heat your home.

If this cycle happens too quickly, the limit switch may not have enough time to detect if there’s an overheat condition before shutting down all gas supply to the burner. In some cases, you may experience a furnace that goes through cycles of turning on and off for no apparent reason.

Furnace is Making Weird Sounds

Some of the noises your furnace makes are an indication of a problem with the unit. By learning to differentiate what’s normal from what is not, you can prevent major repairs with your unit. 

The normal sound with a running furnace is a dull hum. Noises other than that are signs that something is wrong with the equipment. Some of the weird noises you should watch out for include banging, scraping, shrieking, rattling and rumbling, whistling, humming, and popping.

Each of these weird noises is an indication of different issues. For example, your furnace may make a shrieking noise if it has a problem with the motor and scraping sound if there’s an issue with the ball bearings. 

If you hear the sound mentioned above coming from your furnace, immediately contact our furnace repair technicians. Our techs will fix the problem in no time, so you can get your furnace working without those odd noises.

If In Doubt, Contact Our Licensed Furnace Repair Technicians!

Furnaces develop many other problems aside from the ones mentioned above. If you suspect something is wrong with your furnace, immediately contact our team of licensed and experienced furnace repair technicians in Frisco, TX.

Don’t procrastinate on repair because you think the issue is pretty minor. Remember that all major repairs start small. So be proactive to avoid costly repairs later on. 

With years of experience fixing all types of furnace issues, you can rest assured we’ll fix your furnace problem successfully too!

Furthermore, our company has been in the HVAC industry for over 100 years. We completely understand the struggle of having a malfunctioning HVAC system and know how to meet our clients’ needs.

And furnaces aren’t the only heating equipment that we repair. Our team of highly trained and dependable furnace repair technicians in Frisco, TX can repair any type of heating system. Whether you have a furnace, boiler, or heat pump, our team has you covered. 

You can contact our team at 972-532-0008 to get started.