Furnaces typically last between 15 and 20 years when properly maintained. Proper maintenance and promptly addressing repair issues will help your furnace to reach its expected lifespan. Here are some issues you may encounter with your furnace and what they could mean.
The Furnace Isn’t Turning On
When your furnace will simply not turn on, you know there’s a problem. First, check your thermostat to ensure the settings are accurate, and then check the batteries.
Unfortunately, there are numerous other issues that can prevent the system from firing up. However, a qualified heating technician can uncover many of these problems early on during a regular maintenance visit. These problems may include:
- Faulty sensors
- A malfunctioning ignitor
- Fuel supply problems
- Fan motor malfunction
It Only Blows Cold Air
Another common problem occurs when the furnace activates, but it only blows cold air. This happens for many reasons, including:
- Leaks in your ducts
- Clogged air filter
- Dirty heat exchanger
- Malfunctioning thermostat
- Faulty heat sensor
The System Short-Cycles
Short-cycling often occurs when your furnace engages, then turns off before heating the entire space to the correct temperature. This most commonly happens when an airflow restriction prevents air from cycling through the system properly, causing it to overheat.
Check your air filter to ensure it’s not clogged and replace it. If this doesn’t solve your problem, call a professional technician to troubleshoot the problem.
The Fan Is Constantly Running
Two common reasons your fan may constantly run is that the thermostat control is set to “on” rather than “auto,” or you’re experiencing an overheating issue. Check your thermostat settings, then call for additional help.
Your System Is Making Loud Noises
Your system will make some noise as it first cycles on. However, those should generally be quiet noises and should cease after the system starts up. If you continue to have unusual noises, call for a professional to investigate.
Aside from simple fixes like changing your air filter and replacing your thermostat batteries, a professional should perform all other repairs. Call Sanders Home Comfort Heating & Air Conditioning to schedule your furnace repairs today.
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