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

Air conditioners tend to fail on the hottest days of the year, because that is when they work hardest. A spring tune-up finds a weak part while it is still inexpensive to fix.

A maintenance visit is more than a cleaning. We measure refrigerant charge and superheat, the temperature split across the coil, capacitor microfarads against the rated value, motor amp draw, contactor condition and static pressure. Those readings tell us when a capacitor is at 70% of its rating and will not last through July, long before you notice anything is wrong.

Maintenance also protects your warranty. Most manufacturers require documented annual maintenance to keep the parts warranty valid, and a yearly tune-up costs far less than a compressor the warranty will not cover.

We handle both the spring cooling visit and the fall heating visit. Book either one on its own, or both, whenever it suits you.

Air conditioning maintenance visit
  • Carrier factory-authorized dealer
  • NATE certified technicians
  • Better Business Bureau
What we cover

What a spring tune-up covers

  • Refrigerant charge verified against superheat and subcooling
  • Condenser and evaporator coils cleaned
  • Capacitor tested against rated microfarads
  • Contactor, relays and wiring inspected
  • Motor amp draw measured against nameplate
  • Condensate drain cleared and float switch tested
  • Filter checked, airflow and static pressure measured
  • Written report of every reading taken
At a glance

What gets measured

We recommend service once a year for cooling and twice a year for a heat pump. Most manufacturers require documented annual service to keep the parts warranty valid.

Refrigerant charge
Verified against superheat and subcooling, rather than topped up by feel.
Capacitor
Tested against its rated microfarads. A capacitor at 70% of its rating is unlikely to last through July.
Temperature split
Measured across the coil and checked against the manufacturer’s range.
Static pressure
This reading shows whether the ductwork is restricting the system.
How it works

What happens at a tune-up

  1. Book a visit

    Spring for cooling, fall for heating. Book one or both, with nothing to sign up for.

  2. We measure

    We check charge, amp draws, capacitor values, temperature rise, static pressure and combustion.

  3. Clean and test

    We clean the condenser and evaporator coils, clear the condensate drain and test the float switch.

  4. Written readings

    You get a written record of every reading, which is the paperwork a warranty claim is assessed against.

A maintenance visit is a measured inspection, with a written record of every reading.
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 often should air conditioning be serviced?

Once a year for cooling, in spring before you need it. If you have a heat pump it runs year-round, so twice a year — and most manufacturers require documented annual service to keep the parts warranty in force.

Is a yearly tune-up worth it?

If it catches one failing capacitor before it takes out a compressor, it has paid for itself several times over. It also keeps the documentation your parts warranty depends on.

Can I change the filter myself?

Please do — it is the single most useful thing an owner can do, and a blocked filter causes more “broken” systems than any component failure. But a filter change does not test a capacitor, measure a charge or find a cracked contactor.

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.

Request Service

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.

What do you need?
Please enter your first name.
Please enter your last name.
Please enter a phone number so we can call you back.
Please check your email address.
Please enter your town or city.

We use these details only to answer your request, and we will not add you to a mailing list. Prefer to talk? Call (423) 357-1922, Monday to Friday 8–5.

Prefer to speak with someone?

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

(423) 357-1922
Call Now Request Service