5 Common Furnace Repairs

furnaceLiving in New England, the heat often runs round the clock on cold winter days. When you come inside from the freezing outdoors and feel warmth, you might overlook a slight decline in your system’s performance. Yet if you wait too long to address a small issue, it could turn into a big problem.

The average furnace repair cost is $267, but if general maintenance is put off, this expense could increase to over $4,000 for a furnace replacement. Keep these common repairs in mind, so you know when an issue needs to be addressed.

Blown Fuse or Circuit Breaker

When there is an issue with the circuit breaker, the heat will not run. You likely wouldn’t ignore this problem for long but if you’re away from home, you could return to a freezing cold house with no heat.

First check the thermostat – if the screen is blank, make sure the power cord is plugged in. If it is, your next step is to check the circuit breaker for a blown fuse. Try resetting the circuit breaker; if the heat still doesn’t run, call an HVAC professional.

Debris Around the Vent

If your furnace vents outside of the house, the surrounding areas should be kept clean. Strong winds can blow leaves and other debris that cover the heat pump or exhaust vents. In response, make it a priority to regularly check the outdoor connection and remove any overgrown wildlife and debris to avoid a system clog.

Faulty Pilot Light

A pilot light is a small flame that serves as an ignition source for a gas burner. If your gas furnace has a pilot, some common issues can affect its performance. These include a defective switch, clogged orifice or gas leak.

In the event you smell gas, do not attempt to resolve the issue on your own – shut the furnace off right away and call for help. Otherwise, you can try to remove the debris or follow the owner’s manual to adjust the flame screw.

Frequent Cycling

Does your furnace turn off and on too quickly? Oftentimes, this issue is caused by an old or dirty air filter. To help your furnace run smoothly, the air filters should be replaced every few months. In between replacements, keep the filters clean for a better performance.

Slipped Blower Belt

If you hear a loud-pitched squealing sound when the furnace runs, check the blower-fan belt. Over time, the belt can loosen and may slip out of place. When the fan does not turn properly, your home experiences less airflow. You can tighten the screws on the blower-fan belt yourself, but it’s safest to call an HVAC professional.
 
M.J. Fahy & Sons has served Connecticut residents and business owners since 1890. We have decades of experience repairing and installing furnaces. To learn more about our services or schedule an appointment, contact us today!