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

Most air conditioning complaints trace back to the day the system went in, not to the equipment itself. Sizing and installation quality matter more than the badge on the cabinet.

An oversized system is the classic mistake. It cools the air fast, satisfies the thermostat, and shuts off before it has run long enough to pull humidity out — leaving you with a house that is cold and clammy, and a compressor wearing itself out short-cycling. We size by load calculation, not by replacing whatever was there before.

We are a factory-authorized Carrier dealer, so that is the line we know best and stock parts for. Every installation includes the details that matter most: correct line-set sizing, a proper condensate plan, duct modifications where the existing plenum will not suit the new cabinet, and airflow measured and set at commissioning rather than assumed.

Estimates on new equipment are free. Financing is available with approved credit.

A Custom Heating & Air Conditioning van
  • Carrier factory-authorized dealer
  • NATE certified technicians
  • Better Business Bureau
What we cover

What the installation includes

  • Manual-J style load calculation for your house
  • Full Carrier line — Comfort, Performance and Infinity
  • Ductless and mini-split options for additions and problem rooms
  • Duct and plenum modifications fabricated in our own shop
  • Correct line-set sizing and evacuation
  • Airflow measured and set at commissioning
  • Old equipment and refrigerant removed and handled properly
  • Free estimate, and financing with approved credit
At a glance

What the quote includes

Estimates on new equipment are free, and financing is available with approved credit. See our financing options.

Sizing
A load calculation for your house, rather than a match to the old unit. Oversizing is the classic mistake.
The details that matter
Correct line-set sizing and evacuation, a proper condensate plan, and duct or plenum work where the new cabinet needs it.
Commissioning
Airflow measured and set on installation day, rather than assumed from the label.
How long it takes
A straight changeout usually takes one day. Allow an extra day for ductwork, electrical work or a new line set.
How it works

How an installation works

  1. A free estimate

    Estimates on new equipment are free, and financing is available with approved credit.

  2. Sized by calculation

    We size the system with a load calculation for your house, rather than matching the nameplate on the old unit.

  3. Made to fit

    Where the new cabinet needs duct or plenum work, we fabricate it in our own shop.

  4. Tested and explained

    We measure airflow, verify the charge, set the controls and show you how everything works before we leave.

We size each system to your house with a load calculation.
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

How long does an installation take?

A straight changeout is usually one day. Add a day if ductwork, electrical or a new line set is involved, and more for a full new system in a house that has never had one. We will tell you which yours is at the estimate.

Do I have to replace the furnace at the same time?

Not always, but often it is the cheaper path. The indoor coil and blower have to match the new outdoor unit for the rated efficiency to be real, and a twenty-year-old furnace paired with a new condenser rarely delivers what the label promises. We will price both ways.

What efficiency should I buy?

It depends on how long you plan to stay and how much you run it. Higher SEER2 equipment costs more up front and pays back over years, so a house you are selling in two is a different calculation from one you will retire in. We will do that math with you rather than for you.

Is financing available?

Yes, three routes — Credit For Comfort takes applications online in minutes and considers FICO scores down to 500, Eastman Credit Union takes an online application too, and Wells Fargo Bank, N.A. offers special terms with approved credit. Compare them and apply on our financing page.

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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