Water is Pooling
Take a look at the floor around your furnace. If you see pools of water, this is most often caused by a clogged condensate line. It is best to let an HVAC company handle this repair, as it requires both HVAC and plumbing experience to fix.
A Gas Smell
At the first sign of a gas-like smell in your home, it’s essential that you take immediate action. First, shut down your furnace. Then, open up the furnace, look for the gas supply valve, and turn it off. Call an HVAC technicians right away.
When strange sounds from the furnace don’t go away on their own, this is a fairly clear sign that you need furnace repair. Listen for clicking sounds, booming, rattling, squealing, and chirping. Each sound signifies a different issue with the furnace, and your HVAC repair specialist will know what to look for.
When the thermostat on your wall goes out, which tells the furnace how much heat to produce, it’s generally an electrical issue, either a blown fuse, loose wiring, or a tripped circuit breaker. Electrical issues should be handled by an expert, unless you have formal training.
High Utility Bills
If you see an unexpectedly high utility bill, it could be a sign that the furnace isn’t working efficiently. This issue could be a range of problems, from something small like the air filter needs to be changed or something larger like a leak in the duct system.
Homeowners will definitely notice this one right away. When the furnace is blowing cold air, it is usually an issue with the thermocouple or the pilot light. Both of these components should be inspected and repaired by a licensed HVAC technician.
When you hearing the furnace kick on and then only a few minutes later turn off again, it could be an issue with an old filter, improper air circulation, or an issue with the thermostat.