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
Cooling

An air conditioner almost never fails without warning. It gets louder, or weaker, or the bills creep up, and then one August afternoon it stops.

When you call us, a NATE-certified technician diagnoses the fault before any parts are replaced. Capacitors, contactors, condenser fan motors, blower motors, refrigerant leaks, restricted metering devices, failed control boards, clogged drains, seized compressors — we find which it is, tell you what the repair costs, and let you decide.

We carry common parts on our trucks, so many repairs are finished on the first visit. If a part has to be ordered, we will tell you up front, along with what it will take to get you through in the meantime.

If the system is not worth repairing, we will tell you that as well, with the numbers to back it up. No one on our team works on commission.

The whole Custom Heating & Air Conditioning crew
  • Carrier factory-authorized dealer
  • NATE certified technicians
  • Better Business Bureau

No cooling in the middle of summer? 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 air conditioner needs service

Most air conditioners give some warning before they fail. Here is what to watch for.

It is louder than it used to be

A new noise is often one of the first signs, and it costs less to have it checked in May than in August.

It runs constantly but never cools the house

The cause is usually low refrigerant, a dirty coil or an airflow restriction, and these problems tend to get worse the longer it runs.

Your energy bills creep up

When a system has to run longer to keep you comfortable, it usually needs attention.

Outdoor unit on, indoor fan off

Turn the system off at the thermostat, because running without indoor airflow can freeze the coil.

Water where it should not be

This is often a clogged condensate drain or a float switch fault.

It has stopped working

Call us. Emergency service is available outside office hours on the same number.

What we cover

What AC repair covers

  • All makes and models
  • Central air, heat pumps, ductless and package units
  • Refrigerant leak detection and repair
  • Capacitors, contactors, motors and control boards
  • Condensate drain clearing and float switch faults
  • Electrical faults, breakers and disconnect issues
  • Airflow diagnosis — the cause of most “weak” systems
  • Written repair-versus-replace comparison on older units
At a glance

Before you call

No one on our team works on commission, and emergency service is available outside our Monday–Friday, 8–5 hours.

The diagnostic fee
Quoted before we come out. Estimates on new equipment are free; diagnostics and repairs are a service call.
Parts on the truck
Capacitors, contactors, and fan and blower motors travel with the technician, so many repairs are done in a single visit.
Ice on the copper lines
Switch the cooling off and leave the fan running to thaw it. Running an iced system can turn a repair into a compressor replacement.
Repair or replace
Past twelve to fifteen years, a repair costing more than about a third of a new system rarely makes financial sense.
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.

If a system is not worth repairing, we will tell you so and show you the numbers.
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

My AC runs constantly but the house never gets cool. What is that?

Usually one of three things: low refrigerant from a leak, a dirty condenser or evaporator coil strangling heat transfer, or an airflow restriction — a blocked filter, a collapsed flex duct or a failing blower. All are diagnosable in one visit, and the first two get worse the longer the system runs that way.

The outdoor unit is running but the fan inside is not.

That points to the indoor blower, its capacitor, or a control signal not reaching it. Turn the system off at the thermostat — running the outdoor unit without indoor airflow can freeze the coil and, in the worst case, slug the compressor with liquid refrigerant.

There is ice on the copper lines. Should I keep it running?

No. Switch the cooling off and leave the fan on to thaw it. Icing means either low refrigerant or restricted airflow, and running an iced system is how a repairable fault becomes a compressor replacement.

Do you charge for the service call?

Yes, and we tell you the diagnostic fee before we come out. It covers a technician’s time to find the real fault. Estimates on new equipment are free; estimates are not available for diagnostics or repairs.

How old is too old to repair?

Past about twelve to fifteen years, a repair costing more than roughly a third of a new system rarely makes financial sense — efficiency gains alone usually close the gap. Under that, repair is normally the right call. We will show you both figures.

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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