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Who Do I Contact If My System Stops Working?

Reviewed by AC Direct Technical Team Updated June 7, 20263 min read
The short answerIf your system stops working, contact any licensed local heating and cooling contractor to diagnose and repair it. Any licensed contractor can service any brand. A failed part is covered by the manufacturer warranty during its coverage period, while the contractor labor is billed separately.
Who to call when your system needs serviceAC Direct HVAC guide
A local licensed contractor for the work; the manufacturer warranty for parts.

For diagnosis and repair: a local licensed contractor

You do not need the original installer or a brand-specific technician. All properly licensed local heating and cooling contractors are trained to diagnose and repair any brand of equipment. Call a reputable local contractor to find out what is wrong and to handle the repair.

For warranty parts: the manufacturer warranty

The parts in your system are covered by the manufacturer warranty. A covered part that fails during the coverage period is handled through that manufacturer warranty, so keep your proof of purchase, model number, and serial number on hand to confirm coverage.

The manufacturer warranty covers the part itself, not the labor to install it, so the contractor's service call and labor are billed separately. If you are not sure where to start, AC Direct support at 866-862-8922 can point you to the right warranty process.

A quick checklist if your system stops

StepWhat to do
1. Check the basicsThermostat setting, breaker, and furnace switch before you call
2. Call a local contractorAny licensed HVAC contractor can diagnose and repair it
3. Need a warranty part?File through the manufacturer warranty with your model and serial number
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Related warranty questions

Do I need the original installer to repair my system?
No. Any licensed local heating and cooling contractor is trained to diagnose and repair any brand, so you can use a reputable contractor near you.
Does the warranty cover labor?
The manufacturer warranty covers the parts, not the labor to install them. The contractor's service call and labor are billed separately.
How do I get a warranty part?
Covered parts are handled through the manufacturer warranty. Keep your model number, serial number, and proof of purchase. The part is covered, but the labor to install it is not.
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Reviewed by the AC Direct Technical Team

25 years sizing and shipping HVAC systems to homeowners and contractors.

Last updated June 7, 2026  •  Facts verified against current EPA and AHRI standards