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Homeowners' pick for heating and cooling across central Kentucky and the Bluegrass

Dual-Fuel System Repair

We repair dual-fuel systems, the pairing of a heat pump with a gas or propane furnace, for homeowners across Georgia, Indiana, Kentucky, Ohio, Tennessee and West Virginia. You need this call when the heat pump runs in bitter cold and never hands off to the furnace, when the furnace fires on a mild day and runs your fuel bill up, or when the system short cycles between the two. Give us a call with your thermostat model and what temperature outside seems to trigger the trouble, and we will schedule a look.

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  • You reach a person, not a menu
  • Open every day
  • The quote comes first, in writing

Taking calls until 5:00 PM ET

HVAC technician at work

What Dual-Fuel Repair Actually Involves

A dual-fuel system has two heat sources and one brain deciding which runs. Most of the trouble we find is in that decision, not in the equipment itself. We trace the control wiring between the thermostat, the outdoor unit and the furnace board, check the outdoor sensor that reports the real air temperature, and confirm the balance point is set where it belongs for your fuel. From there we test an actual changeover, watching the heat pump stop and the furnace prove flame before we call it fixed.

What We Check On The Visit

We start at the thermostat, since a dual-fuel setup needs one that understands two stages of heat and a lockout. Then we read refrigerant performance on the heat pump, check defrost operation, and inspect the furnace burners, flame sensor and heat exchanger. On propane systems we verify gas pressure at the appliance connection. We also look at the ductwork, because farmhouses with retrofit duct often starve one end of the house and make the system think it is losing the fight.

How We Decide It Is The Right Call

If your heat pump is icing, running long cycles in cold weather, or the furnace is doing all the work in fall, the changeover logic is the first suspect and a repair usually settles it. If the heat pump compressor has failed or the heat exchanger is cracked, we say so plainly and talk through replacing that half rather than patching it. We show you what we measured. If you ever smell gas, leave the house, call 911 or your gas utility, then call us.

What every visit includes

Written quote before any work

Covering 125 cities across Georgia, Indiana, Kentucky and 3 more.

You reach a person, not a menu

Open 7 days, 8:00 AM to 5:00 PM ET.

Every major brand, gas and electric

Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.

Dual-Fuel System Repair — quick answers

Why does my furnace run when it is fifty degrees outside?

The changeover setting or outdoor sensor is likely off, so the system thinks it is colder than it is. The heat pump should carry mild weather. We test the sensor reading and reset the balance point.

Should the heat pump and furnace ever run at the same time?

In most dual-fuel setups, no. The furnace should take over after the heat pump locks out. If both run together, the control wiring or thermostat configuration needs correcting.

Does propane change how a dual-fuel system is set up?

Yes. Propane costs more per unit of heat than natural gas in many areas, so the balance point is often set lower to let the heat pump work longer. We adjust for your fuel.

How it works

  1. Step 1

    Tell us the symptom

    Call or fill in the quote form and describe what changed. Warm air, no air, a smell, a noise, a breaker that keeps tripping. That detail tells us what parts to bring along.

  2. Step 2

    We diagnose on site

    We check the thermostat, the electrical side, airflow and the equipment itself before we quote anything. If the problem sits in the ductwork rather than the unit, we say so plainly.

  3. Step 3

    We repair and explain

    Most air conditioning repair and heating repair work finishes in one visit. We show you the failed part, explain what caused it, and tell you what to watch for next season.

Call (888) 560-0120
  • A real person answers
  • Open 7 days
  • Written quote before work starts

Why homeowners call us

  • Propane and dual fuelPlenty of homes in our service area run propane heat or a dual fuel setup with a heat pump. We know how those systems switch over and why a bad changeover setting can leave you cold and burning fuel.
  • Older houses, added ductworkFarmhouses often got ducts decades after they were built, run through crawl spaces and attics. When the equipment tests fine but rooms still fight each other, we look at the duct runs and static pressure.
  • Repair before replacementA failed capacitor, a cracked wire, a clogged drain or a bad control board is a repair, not a new system. We tell you when the equipment is genuinely finished and when it is not.
  • Plain talk on the phoneWe ask what the thermostat reads, whether the outdoor unit is spinning, and when it last worked normally. That two minute conversation often shortens the visit and keeps the repair cost down.
  • All major brands, gas & electricCarrier, Trane, Lennox, Goodman, Rheem, York and more, as an independent company.
  • Straight answersIf a system is not worth repairing, we say so, often right on the phone.

Dual-Fuel System Repair

Part ofHeat Pump Repair
QuoteWritten, upfront
Gas & electricBoth
Open7 days

Ready to book dual-fuel system repair?

Describe the system and your ZIP. The written quote comes before any work.

  • A real person answers
  • Open 7 days
  • Written quotes
  • All major brands
  • Gas & electric
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