Serving Church Hill, TN & the Tri-Cities Mon–Fri 8–5 · Emergency service available (423) 357-1922
Custom Heating & Air Conditioning logo Heating & Air ConditioningChurch Hill, TN · Since 2001
Heating

In an East Tennessee January, no heat is more than an inconvenience. It is a burst-pipe risk, which is why these calls get our highest priority.

Every fuel type fails differently. Gas furnaces develop ignition faults, flame-sensor problems, pressure-switch and inducer failures, and limit trips caused by airflow rather than by the burner. Heat pumps can lose defrost boards and reversing valves, and electric furnaces can lose sequencers and elements. We work on all of them.

We also test for carbon monoxide. A cracked heat exchanger can let carbon monoxide into the airstream, and no repair price is worth that risk. If we find one, we will give you a clear answer and shut the system down.

Emergency service is available outside our normal Monday-to-Friday hours.

Heating technician on a no-heat call
  • Carrier factory-authorized dealer
  • NATE certified technicians
  • Better Business Bureau

No heat right now? Emergency service is available.

The office is open Monday to Friday, 8–5. Outside those hours, emergency service is available on the same number.

(423) 357-1922
When to call

Signs your heating needs service

These are the heating problems we are called about most often.

If you smell gasLeave the building first, then call the gas utility from outside. Do not switch anything on or off on the way out. Call us afterward, once the utility has made it safe.

It starts, then shuts off

This is usually a limit trip caused by poor airflow. Check the filter and the vents first: it costs nothing, and it often solves the problem.

Backup heat runs all the time

Heat pump air naturally feels cooler than furnace air. If the backup strip heat runs constantly or the house is not keeping up, give us a call.

A sharp or electrical smell

A burning-dust smell on the first run of the season is normal. If it smells sharp, electrical or like burning plastic, shut the system off and call us.

It will not light

Gas furnaces can develop ignition, flame-sensor and pressure-switch faults, and we will find which one it is.

No heat at all

In an East Tennessee January that is a burst-pipe risk, so we give these calls our highest priority.

Worried about carbon monoxide

We test for it. If we find a cracked heat exchanger, which cannot be repaired, we will give you a clear answer.

What we cover

What heating repair covers

  • Gas, electric, propane, heat pump and dual-fuel systems
  • Ignition, flame sensor and burner faults
  • Inducer, pressure switch and limit trips
  • Heat exchanger inspection and carbon monoxide testing
  • Heat pump defrost boards and reversing valves
  • Blower motors, capacitors and control boards
  • Thermostat and control wiring diagnosis
  • Emergency service outside business hours
How it works

How a repair visit works

  1. You call the office

    Tell us what the system is doing, and we will let you know the diagnostic fee before we come out.

  2. We find the real fault

    A NATE-certified technician tests the system and pinpoints the cause before any parts are replaced.

  3. You decide

    We explain what the repair will cost, and the decision is yours. On an older unit, we show you the repair-versus-replace numbers as well.

  4. We fix it

    We carry common parts on our trucks, so many repairs are finished on the first visit.

A no-heat call in January gets our highest priority.
Custom Heating & Air Conditioning, LLC Family owned in Church Hill, Tennessee, since 2001
2001Serving since
100+Years combined experience
2,712Customer reviews
30+Towns covered
Common questions

Before you book

The furnace starts then shuts off after a minute or two.

Classic short-cycling on a limit trip, and it is usually airflow rather than the burner: a blocked filter, closed vents or a failing blower letting the heat exchanger overheat. It can also be a dirty flame sensor losing sight of the flame. Both are common and neither is expensive — but ignoring it stresses the heat exchanger.

My heat pump is blowing cool air in winter. Is it broken?

Not necessarily. Heat pump supply air is cooler than furnace air by nature — it will feel cool against your hand while still heating the house. If it is not keeping up, or the backup strip heat is running constantly, that is worth a call.

What is that smell when the heat first comes on?

Dust burning off the heat exchanger after a summer of not running. It should clear within an hour or so. A persistent smell — especially anything sharp, electrical or like burning plastic — means shut it off and call.

I smell gas.

Leave the building first, then call the gas utility from outside. Do not switch anything on or off on the way out. Call us afterward, once the utility has made it safe.

Prefer to call?

(423) 357-1922
Office hours
Monday to Friday, 8–5
Outside those hours
Emergency service is available — call the same number.
Where we go
Church Hill, Kingsport, Mount Carmel, Surgoinsville, Rogersville, Johnson City, Bristol, Greeneville, Morristown and across into Southwest Virginia. Full service area.
Where we are
119 E Main St, Church Hill, TN 37642
Thank you — we have your request.
We will call you back to confirm a time. If it is urgent, call (423) 357-1922.

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Tell us what the system is doing and we will call you back to schedule. For a no-heat or no-cool emergency, please call us instead. It is the fastest way to reach us.

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Monday to Friday 8–5, with emergency service available outside those hours.

(423) 357-1922
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