About This Service
Heating Services in Middleburg, FL & Clay County
All Set Heating, Air & Plumbing is an HVAC contractor in Middleburg, FL providing heat pump repair, installation, maintenance, and emergency heating service to homeowners across Clay County, Duval County, and Northeast Florida.
Nearly every home in this region uses a heat pump as its primary heating and cooling system. Unlike a furnace that burns fuel, a heat pump transfers heat using a refrigeration cycle — and Florida heating problems follow specific patterns that differ from those in the north. Diagnosing the issue correctly on the first visit requires a technician who works on heat pump systems in this climate daily. All Set technicians do exactly that.
What's Included in Heating Repair & Maintenance
Heat Pump Repair
Reversing valve, defrost board, refrigerant, compressor, capacitor.
Furnace Repair
Igniter, heat exchanger, blower motor, flame sensor, control board.
Air Handler Service
Blower motor, coil cleaning, drain pan, filter replacement.
Emergency Heating Repair
24/7 dispatch, no extra fee for after-hours calls.
Annual Heating Tune-Up
Inspection, testing, written report.
Brands We Service
Amana, Carrier, Trane, Lennox, Rheem, Daikin, Goodman, Bryant, American Standard, and more.
Typical heating repair cost: $200–$1,800 depending on the failed component and system type.
Common Symptoms
What Your Heat Pump Is Telling You
Nearly every home in Clay County heats with a heat pump, not a furnace — and Florida heat pump failures follow recognizable patterns. Knowing which symptoms point to which failure helps the technician arrive prepared and fix it on the first visit.
Running but Not Heating
System runs and moves air but produces no warmth. Almost always a failed reversing valve solenoid — the system is stuck in cooling mode regardless of what the thermostat asks for. Specific, repairable, usually same-visit.
Blowing Cold Air in Heat Mode
Thermostat on heat, fan running, but vents blow cool or room-temp air for more than 30 minutes. Usually a reversing valve issue, a heat-mode refrigerant problem, or a defrost cycle running abnormally long.
Stuck in Emergency Heat
If the thermostat switched to emergency heat on its own, the system detected a problem with the outdoor unit. Emergency heat costs 2–3× more to run — leave it on, but call for a diagnostic.
Unusual Noises in Heating Mode
Grinding or screeching usually means a fan motor bearing. Rattling or banging from the outdoor unit points to the compressor. Hissing or bubbling suggests a refrigerant issue that shows up in heat mode first.
Running Constantly, Never Reaching Temp
If the system runs non-stop at night while it's 45° outside and only 62° inside, that's not a capacity limit — that's a heat-mode problem worth diagnosing.
No Heat at All, Won't Turn On
Complete failure to operate in any mode is almost always electrical — failed capacitor, tripped breaker, bad contactor, or thermostat. A safety switch on the defrost board can also lock the system out. Most are same-day fixes.
Our Heating Services
Heating Services for Middleburg & Clay County Homeowners
Why Clay County Chooses All Set
Transparent $99 Diagnostic
No surprise charges to find out what's wrong. We diagnose, then quote — always.
1-Year Parts Warranty
Every heating repair backed by our 1-year parts warranty. Optional extended labor warranty available with Yeti Club membership.
Same-Day & 24/7 Emergency Service
Real technicians dispatched day, night, weekends and holidays. We answer the phone.
Insured in Florida
Fully HVAC contractor.
Common Questions
Questions Homeowners Ask About Heating Service
Do most Middleburg and Clay County homes have a heating system?
Yes. Almost every home with central AC in this area has a heat pump, which provides both cooling and heating by reversing its refrigeration cycle. A heat pump isn't a separate system added on top of an AC unit — it's one system that handles both. If your home has central AC, it likely heats your home the same way.
Is my heat pump defrosting or is it broken?
Heat pumps periodically run a defrost cycle lasting 10–15 minutes, temporarily blowing cool or lukewarm air. This is normal. If the system has been blowing cool air for more than 30 minutes, or the outdoor unit is completely covered in ice, that's a problem worth diagnosing. See common symptoms →
Do you offer 24/7 emergency heating service?
All Set installs and services all major brands including Amana, Carrier, Trane, Lennox, Rheem, Daikin, Goodman, Bryant, American Standard, and Grandaire. We stock common replacement parts for these brands on our trucks to enable same-day repairs in most cases throughout Clay County and Northeast Florida.
What HVAC brands do you service?
Amana, Carrier, Trane, Lennox, Rheem, Daikin, Goodman, Bryant, and American Standard. We stock common replacement parts on our trucks for same-day repairs.
Is financing available for a new heat pump?
Yes. All Set provides financing options for new heat pump installations. View financing details → or ask when you call.
How quickly can you respond to a heating emergency?
Because we're based in Middleburg, we typically offer the fastest emergency response times in Clay County. Emergency calls are always prioritized. Call 904-206-8702 any time.
Ready to Schedule HVAC or Plumbing Service in Middleburg or Clay County?
Call 904-206-8702 to speak with a live dispatcher — same-day appointments available, 24/7, no answering service.
All Set Heating, Air and Plumbing provides AC repair, AC installation, heating service, plumbing, and commercial HVAC maintenance across Middleburg, FL, Clay County, and Northeast Florida.