Heating Repair in Jacksonville, FL

Start Here: What Kind of Heat Do You Have?

Most homes in our area heat one of two ways, and each one fails differently. Knowing which you have helps you describe the problem when you call. If you already know, our furnace repair page and heat pump repair page go into more detail.

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  Heat pump

  One outdoor unit cools in summer and reverses to bring heat in when it's cool out. If the outdoor unit runs when the heat is on, you most likely have a heat pump.

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  Gas furnace

  Burns natural gas indoors and has a vent pipe that carries combustion gases outside. It's usually paired with a central AC that shares its blower and ductwork.

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  Electric furnace

  Heats with electric elements inside the indoor unit, with no gas connection. It's also typically paired with a central AC.

A Few Things to Check Before You Call

These won't fix a failed part, but they rule out the simple stuff.

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  Thermostat

  Make sure it's set to Heat and the set temperature is above the room temperature. A blank or dim screen may just need fresh batteries.

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  Breakers and switches

  Check the breaker for the indoor unit, and for the outdoor unit if you have a heat pump. If a breaker trips again after you reset it, leave it off and call us.

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  Air filter

  A clogged filter starves the system of air, and many systems shut the heat off to protect themselves when that happens.

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  Vents and returns

  Furniture or rugs over supply vents and return grilles can leave rooms cold.

Common Heating Problems

Each symptom can have more than one cause, which is why we diagnose before we recommend anything.

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  No heat at all

  Thermostat, power, a safety switch, an ignition problem on a gas furnace, or a heat pump that isn't switching into heating mode.

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  Air that feels lukewarm

  Mild warmth is normal for a heat pump. Lukewarm air from a furnace, or a house that never reaches the set temperature, is worth a diagnostic visit.

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  Some rooms warm, others cold

  Often airflow: a dirty filter, a blower problem, or ductwork that's disconnected or restricted.

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  Turning on and off every few minutes

  Short cycling can come from overheating, a sensor problem, the thermostat, or a system that's the wrong size for the home.

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  A burning smell

  A faint dusty smell the first time the heat runs each season is common and should fade. A smell that lingers, or anything that smells electrical, means turn the system off and call us.

If You Smell Gas or Suspect Carbon Monoxide

Don't troubleshoot it. Get everyone out of the house, then call 911 or your gas utility from outside. Don't switch lights or appliances on or off on your way out, and don't go back inside until they tell you it's safe.

What Happens When You Call Cool Cats

Call 904-697-6313 during office hours, Monday–Friday, 8:00 AM – 5:00 PM. Our dispatcher asks what you're noticing and sets a time for a technician, who diagnoses the system, explains what's wrong and gives you 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.