Whether it’s a leaky furnace or if you throw the switch to turn on your heating system when it gets chilly and it won’t start, common furnace problems can affect your home at any moment.
Regardless of the issue, learning how your heating system works and a little bit about some frequent furnace problems is crucial in deciding whether you can troubleshoot on your own or if you need professional services. By noting the furnace's behavior, listening for peculiar noises and checking for signs of damage or blockage, you can narrow down the possible causes.
If you're uncertain about the problem or lack the necessary skills and tools, it's best to call a reputable HVAC company like Bell Air Conditioning Inc. We can accurately diagnose the issue and perform the required repairs or maintenance, so we can get your furnace working again ASAP.
Here's more about what causes a furnace to leak water and eight other common heating dilemmas:
1. My Furnace Is Leaking Water
A furnace can leak water for several reasons. One possibility is a condensate leak, where the water released during the combustion process is not properly draining away. This might be due to a plugged condensate drain line or a malfunctioning condensate pump. Another likely cause of water leakage from a furnace is a cracked heat exchanger, which can be responsible for water—as well as dangerous gases—coming out of the furnace.
It is necessary to manage water leaks quickly to prevent further damage to your furnace. Contacting a professional HVAC technician like the crew at Bell Air Conditioning Inc is recommended to diagnose and resolve the issue successfully.
2. My Furnace Is Blowing Cold Air/Not Blowing Hot Air
Some likely causes for a furnace blowing cold air or not blowing hot air include a malfunctioning thermostat, a problem with the pilot light or ignition system, a plugged air filter, or a malfunctioning heating element. It also may be your furnace is overheating and shutting off as a safety precaution.
If your furnace won’t blow hot air, it's a good idea to contact a skilled HVAC tech to diagnose and fix the problem. They can offer an accurate assessment and suggest the correct solution.
3. My Furnace Is Not Keeping Up
A widespread reason your furnace isn’t keeping up on a cold day is that your home doesn’t have enough insulation, which can cause heat loss and reduced efficiency. Another reason your furnace is struggling is because it’s not powerful enough for your home, so it can’t produce enough heat to effectively warm the space. A broken thermostat or ductwork problems can also result in uneven heating.
To address this, first assess your home’s insulation level and make sure it’s enough to protect your home. Also, examine the thermostat to make sure it’s set right and the batteries still function.
If the problem lingers, consider consulting with an experienced HVAC company, such as Bell Air Conditioning Inc, who can look over your system, determine the root cause and provide solutions such as furnace replacement, repairing ductwork or adjusting your thermostat settings.
4. My Furnace Is Not Working
If your furnace is not working, there are a couple of steps you can take to troubleshoot before calling a heating specialist. Check if the thermostat is set correctly and the batteries are good. If the furnace still doesn't start, check the circuit breaker or fuse box to make sure power is reaching the furnace.
If there is power but no heat, the problem may be with the ignition system or gas supply. In that case, it's best to reach out to a seasoned HVAC professional for diagnosis and repair.
5. My Furnace Is Short Cycling
If your furnace is short cycling, that means it is turning on and off frequently at short intervals as opposed to running in regular cycles like it is designed to do. This can cause inefficiency, increased energy consumption and potential damage to your heating system.
If you believe your furnace is short cycling, the first step is to check your unit’s air filter. Filters should be switched out regularly to ensure air flow, so if your furnace air filter is clogged with debris you should exchange it for a clean one—and make sure it is pointing in the right direction. If that doesn’t do the trick, go to your thermostat and verify it’s set right and the batteries are good.
If those two things don’t work, it’s smart to call experts like the crew at Bell Air Conditioning Inc. Prompt professional attention will help restore the proper functioning of your furnace and reduce the chance of further complications and high energy bills.
6. My Furnace Is Making a Humming Noise
Whenever your furnace is making a humming noise, it often is a sign of a malfunction with the electrical parts or the blower motor. For this reason, if you notice your furnace making a humming noise, it is critical to take action.
If the noise continues, it is best to contact a professional HVAC technician.
7. My Furnace Is Making a Loud Noise
If your furnace is producing a constant loud noise, it's important to address the issue quickly to prevent further damage or potential safety hazards. One common reason is a failing blower motor or fan, which can generate a grinding or screeching sound. Another common cause is a loose or worn-out belt that may make a squealing or rattling noise.
Given the complexity of furnace systems and potential risks involved, it's safer to get a hold of a heating and cooling specialist.
8. My Furnace Is Not Turning On
If your furnace refuses to turn on, make sure the thermostat is set to the desired temperature, is in heating mode and the batteries are functioning. Then, see if the circuit breaker or fuse controlling the furnace is working right. If these basic checks don't resolve the problem, you can inspect the furnace's power switch or emergency shutoff switch to make sure they're in the "on" position and weren’t accidentally turned off.
If those steps don’t get the job done, contact a heating specialist for furnace repair.
9. My Furnace Is Not Igniting
Similar to a furnace that won't turn on at all, a furnace that isn’t igniting can be the result of a clogged air filter or a tripped circuit breaker. So, checking the air filter and assessing your circuit breakers are a good place to start.
Other common causes of a furnace not igniting include a faulty igniter or faulty flame sensor. Indications of these include the furnace continuously making an attempt to ignite without success, a lack of heat production or the furnace is making a burning or gas smell. Both of these issues can be simply fixed by HVAC professionals like the team at Bell Air Conditioning Inc.