Family-owned since 1986 Licensed & insured in Virginia Flat-rate pricing, approved before work starts
Open 7 days, 7 AM – 8 PM (757) 495-7782

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Thermostat Repair & Installation

A thermostat that's wired or set up wrong can make a good system run poorly, especially a heat pump. We repair, replace and set up thermostats so your system runs the way it was designed to.

  • Smart and programmable
  • Heat pump aux heat setup
  • Wiring repairs
Air handler wired to a new thermostat by Ace Mechanical
Thermostats matched to the equipment they control.Ace install
Ace service checkSet up right
Heat pump setback2–3°FAux heat lockoutSETC-wireOK

Signs of a thermostat problem

  • Display is blank or keeps resetting
  • System won't turn on or won't shut off
  • House temperature doesn't match the setting
  • Heat pump running on AUX or EM HEAT all the time
  • Smart thermostat keeps losing Wi-Fi or power
  • Short cycling after a new thermostat was installed

What we do

Repair

Loose or damaged wiring, failed transformers, and bad thermostats.

Replacement

Programmable and smart thermostats matched to your system.

Heat pump setup

Correct staging and aux heat lockouts so backup heat strips don't run up your bill.

Zoning

Thermostats and dampers for homes with hot and cold floors.

Smart thermostats are worth it when they're configured for your equipment. If you installed one yourself and your power bill went up, the aux heat settings are the first thing we check. See heat pump repair.

$75 diagnostic, waived with the repair. For home service calls, the diagnostic visit is $75. Approve the flat-rate repair price and the $75 is waived. Nothing starts until you say yes.

Choosing a thermostat

For a single-stage AC and furnace, almost any modern thermostat works. Heat pumps, two-stage and variable-speed systems need a thermostat that supports them. Put it on an inside wall away from sunlight, supply registers and kitchens. A thermostat in the wrong spot makes the whole house feel wrong.

Common questions

Will a smart thermostat work with my heat pump?

Most will, if they're wired and configured for heat pump staging and auxiliary heat. We set that up correctly.

Why is my heat pump always on AUX heat?

Low refrigerant, a defrost problem, or thermostat settings that call for backup heat too early are common causes.

Get it fixed right the first time

Call (757) 495-7782 or send a request. You approve the price before we start.

Call Ace

One call. Hot side, cold side, pipes and air.

Tell us what's down and where. We'll give you a straight answer, a flat-rate price, and a time.

(757) 495-7782 Open 7 days, 7 AM – 8 PM · Serving all of Hampton Roads
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