Furnace Repair in Jacksonville, FL
Furnace not starting, or blowing air that isn't warm? Call Cool Cats at 904-697-6313. Our residential diagnostic fee is $109, and it's waived when you approve a repair of $1,000 or more. We repair gas and electric furnaces of all brands.
Gas and Electric Furnaces Fail Differently
Both types share a blower, a thermostat and a filter, but the heat comes from different places, so the likely causes differ too.
- 🐾
Gas furnaces
Every heating cycle runs a sequence: the draft inducer starts, the igniter heats, the gas valve opens and a flame sensor confirms the burners lit. Safety switches watch each step. If any step fails, the furnace shuts down, often after a few tries.
- 🐾
Electric furnaces
Heating elements warm the air, switched on in stages by relays or sequencers and protected by high-limit switches. Elements can fail one at a time, so the heat gets weaker before it stops.
Common Furnace Problems
- 🐾
Blower runs, but the air is cool
On a gas furnace, often an ignition or flame-sensing problem. On an electric furnace, failed elements or the controls that switch them on.
- 🐾
Starts, then shuts off
A safety switch may be stopping the cycle. Overheating from a clogged filter or restricted airflow is a common reason.
- 🐾
Breaker trips when the heat comes on
Common with electric heat when an element or wiring has a fault. Don't keep resetting it. Leave it off and call us.
- 🐾
Blower won't stop running
Can be a thermostat setting, a relay or a limit switch.
- 🐾
Clicking, rumbling or squealing
Repeated clicking without heat can mean ignition attempts that aren't succeeding. Squealing usually points to the blower motor or its bearings.
Before You Call
- 🐾
Thermostat set to Heat
And set a few degrees above the room temperature.
- 🐾
Furnace switch and breaker
Many furnaces have a service switch nearby that looks like a light switch. Make sure it's on, along with the breaker.
- 🐾
Filter
A clogged filter can trip a furnace's safety switch. Swap it if it's dirty.
- 🐾
Furnace door
Many furnaces won't run if the front panel isn't seated, because a door switch keeps them off. Make sure it's closed securely.
Gas Smell or a Carbon Monoxide Alarm?
Leave the house right away with everyone in it, and call 911 or your gas utility once you're outside. Don't try to find the source, don't flip switches on the way out, and wait until they say it's safe to go back in.
Who Diagnoses Your Furnace
Call 904-697-6313 during office hours, Monday–Friday, 8:00 AM – 5:00 PM, and our dispatcher will set a time for a technician. Cool Cats is a small, family-owned team: owner Ricky Epperson has been in the HVAC industry since 1997, and service technician Aaron Belmudez has 20+ years of experience. Our technicians are background-checked and wear shoe covers in your home. You'll get options with upfront pricing before any repair starts. Our residential diagnostic fee is $109, and it's waived when you approve a repair of $1,000 or more. We don't offer 24/7 emergency service. Calls after 5:00 PM are answered by an answering service, and our office returns calls the next business day.
Frequently Asked Questions
How much does a furnace diagnostic cost?
Our residential diagnostic fee is $109, and it's waived when you approve a repair of $1,000 or more.
Do you repair all furnace brands?
Yes, gas and electric. We service and repair all HVAC brands.
Can I keep resetting my furnace if it shuts off?
It's better not to. A furnace that keeps shutting down is usually responding to a safety switch, and repeated resets can hide the real problem. Check the filter and thermostat, then call us.
Should I repair or replace an older furnace?
We look at equipment age, repair cost and repeated breakdowns, plus refrigerant considerations on the AC paired with it. If replacement deserves a look, our furnace replacement page explains the free replacement estimate.
Does Cool Cats offer 24/7 emergency service?
No. Our office and service hours are Monday–Friday, 8:00 AM – 5:00 PM. Calls after 5:00 PM are answered by an answering service, and our office returns calls the next business day.
What Our Customers Say
5-star reviews from Google. Rated 4.9 from 103 reviews.
“Aaron came over to scope out a project for me. He was extremely knowledgeable, competent but most of all honest. I sincerely appreciated he did not try to sell me something I didn't need. We will without a doubt be using this company for our needs in the future.”
“Aaron made it to my house quickly and immediately got to work. Checked everything and kept me informed on what was wrong. Highly recommend.”
“Wouldn't have anybody else for a/c repairs! They are awesome and most importantly they are honest! Really appreciate them!”
Ready When You Are
Request service online or call us during office hours (Monday–Friday, 8:00 AM – 5:00 PM). We'll inspect, explain what we find, and give you options.