Your furnace is responsible for heating your home and making sure it reaches a comfortable temperature for your family. It circulates air throughout the house, pulls in cold air from outside, heats it, and sends it through your vents.
Because a furnace is such an integral part of your home, it’s essential to stay on top of its monitoring and maintenance. It isn’t indestructible. Your furnace can need repair over the course of its lifetime, and these are some of the signs that it’s time to call in professional help.
Here’s what you need to know:
Abnormal Smells From the Furnace
When you turn on the furnace, it circulates air and distributes warm air evenly throughout the house. But if you notice a strange smell coming from the vents, there could be an issue. You could have an accumulation of dust or debris, a leak, a dirty filter, or a more significant problem like a broken motor.
Gas Leaks
A gas leak from your furnace is dangerous, especially with a propane furnace. You can often tell there’s a gas leak by smelling near your vents. If you notice a gas odor or see a pink or smoky residue near your vents, it could be a warning sign of a serious malfunction. Never ignore a gas leak. If you smell gas or see residue, shut off your furnace immediately and call a professional.
Excessive Noise
If you hear strange noises coming from your furnace, it could be a warning sign of something wrong, possibly a rocker switch or relay that needs to be replaced. Be alert to any unusual sounds and call a professional if something doesn’t sound right.
The Furnace Is Not Heating Up
A furnace that isn’t heating your home to the desired temperature could signal a serious problem. If you notice you’re cold inside and it isn’t because of the outdoor temperature, there could be an issue with your furnace. Regular furnace maintenance makes it much easier to catch a problem like this early.
Trouble Starting the Unit
If your furnace takes a long time to turn on, it could be an issue with your thermostat, sometimes an easy fix. If it starts but shuts off after a few seconds, the problem could involve the motor, relay, or transformer. If the unit doesn’t start at all, call a professional right away.
Rough Running and Abrupt Shut-Off
When your furnace starts and then shuts off, there may be an issue with the blower motor. A fan that runs too loud, or a blower that seems to be running too fast, can also be a sign of a problem worth having inspected.
The Bottom Line
Your furnace is an integral part of your home, and keeping it running correctly matters, especially heading into Alabama’s colder months. While the unexpected can happen, most furnace issues are a sign of a larger problem that could have been caught earlier with regular service.
Frequently Asked Questions
What does it mean if my furnace smells strange?
A strange smell from your furnace can point to a dust or debris buildup, a dirty filter, a small leak, or in some cases a more serious issue like a failing motor. If the smell is persistent or unusual, it’s worth having a technician take a look.
Is a gas smell from my furnace an emergency?
Yes. If you smell gas or notice a pink or smoky residue near your vents, shut off your furnace immediately and call a professional right away. Never wait on a suspected gas leak.
Why does my furnace make loud noises when it runs?
Unusual noise often points to a worn part like a relay, rocker switch, or blower motor. It’s worth having a technician diagnose the specific cause before it turns into a bigger repair.
How often should I have my furnace serviced?
Most furnaces benefit from a professional inspection once a year, ideally before the start of the heating season, to catch small issues before they become breakdowns.
If you’re noticing any of these signs, Mainline Heating & Air Conditioning can help. We’re a locally owned and operated HVAC company that’s served Birmingham and Central Alabama since 1989, and we provide dependable, honest furnace and heater repair services. Our technicians are at your service Monday through Friday, 7am to 5pm, with 24/7 emergency heating service available when you need it most. We also offer a Maintenance Club membership to help catch furnace problems before they turn into a no-heat emergency. Contact us today to get started or request an estimate online.