HVAC control board diagnostic — corroded wiring and components — Garris Air
Heating Repair — Upstate SC

Heating Repair When You Need It Most

A broken heater in a South Carolina winter is miserable. Garris Air provides fast, honest heating repair for furnaces, heat pumps, and air handlers across Greenville and Spartanburg.

Upfront Pricing
Techs You Trust
No Unnecessary Upsells
Licensed & Insured
Warning Signs

Signs Your Heating System Needs Repair

Don't wait for a complete breakdown. These warning signs mean it's time to call Garris Air.

  • No heat or insufficient heat
  • Furnace cycling on and off repeatedly
  • Unusual smells — burning, musty, or gas odor
  • Loud banging, rattling, or squealing noises
  • Yellow or flickering pilot light
  • Carbon monoxide detector alarm
  • Uneven heating room to room
  • Heating bills suddenly much higher
Systems We Service

All Heating Systems, All Brands

Gas Furnaces

All brands and models. From igniter failures to heat exchanger issues, we diagnose and repair correctly.

Electric Furnaces

Heating element replacements, sequencer issues, and electrical faults handled safely and efficiently.

Heat Pumps

Reversing valve failures, defrost issues, and refrigerant problems in heat mode — we know heat pumps.

Air Handlers

Blower motor failures, control board issues, and coil problems diagnosed and repaired.

Corroded HVAC control board wiring — real Garris Air diagnostic photo
Real Garris Air job — corroded control board

What We Find

Honest Diagnosis. No Guesswork.

Corroded wiring and failed components like these are common in older systems — and easy to misdiagnose. We find the real problem, give you an upfront price, and fix it right the first time.

No parts ordered on a guess. No repairs that don't hold. Just honest work at a fair price.

Heater not working?

Call us — we'll find the real problem.

Upfront pricing before we start. No surprises.

FAQ

Heating Repair — Common Questions

Why is my heat not working?+

Common causes include a tripped circuit breaker, a dirty flame sensor or igniter (gas furnaces), a failed capacitor or reversing valve (heat pumps), a clogged air filter, or a thermostat issue. Check your filter and thermostat settings first — if those are fine, call for a diagnosis.

Why is my furnace blowing cold air?+

A furnace blowing cold air is often caused by a tripped high-limit switch (usually from restricted airflow), a dirty flame sensor, a failed igniter, or a heat exchanger issue. A technician can identify the exact cause quickly.

Why is my heat pump icing up in winter?+

Some frost on a heat pump in cold weather is normal — the system has a defrost cycle to handle it. If the unit is completely encased in ice or the defrost cycle isn't clearing it, that indicates a problem: a failed defrost board, a stuck reversing valve, or low refrigerant. Call for service.

Is a gas smell from my furnace dangerous?+

Yes. If you smell gas, leave your home immediately, don't operate any switches, and call your gas company from outside. Once the gas company clears the area, call us for furnace repair.

How often should I replace my furnace filter?+

Every 1–3 months depending on the filter type and your home's conditions. A clogged filter is one of the most common causes of furnace problems and reduced efficiency.

Can you repair my heating system quickly?+

We work to schedule heating repair calls as promptly as possible, especially during cold weather. Call us and we'll do our best to get a tech to you quickly.

Heating System Not Working?

Fast, honest heating repair across Greenville, Spartanburg, and Upstate South Carolina. Call now or schedule online.