The Report
What the homeowner told us
Thermostat blinking red and the system is not working.
Repair · Phoenix
Thermostat Replacement in Phoenix — May 2026
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Documented ServiceFindings supported by service notes
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Reported by the Homeowner
Thermostat blinking red and the system is not working.
Phoenix homeowner · May 23, 2026
Findings & Work Performed
What Mike documented during the visit
Nest thermostat unresponsive; system ran properly when thermostat was bypassed into cooling.
Replaced Nest thermostat with Honeywell T4.
— Related Services
How this repair fits into our Phoenix HVAC service
This repair is one example of the Thermostats work AZ Perfect Comfort performs across Phoenix, AZ. You can browse every case study we have published for this type of work in the Thermostat Replacement case studies archive. Homeowners who join our Comfort Club maintenance membership get every eligible repair backed by our Lifetime Repair Guarantee. For larger repairs and replacements, financing options are available for qualifying projects.
— Parts & Work Performed
Invoiced parts and work
Invoice descriptions identify billed scope. The service notes above document completed work and any recorded verification.
| Item | Description | Qty | Price |
|---|---|---|---|
| Trip charge to travel to customer home; waived with paid repair during normal business hours. | 1 | $49.98 | |
| Charge waived with any performed and paid repair or service, Monday through Friday 7am to 5pm. | 1 | $-49.98 | |
| Maintenance visit credit. | 1 | $-165.00 | |
| Diamond Level single-system maintenance. | 1 | $165.00 | |
| Remove existing thermostat and install a new basic programmable thermostat; test system operations. Honeywell T4 thermostat. | 1 | $232.80 | |
| Diamond Tier 1 System Perfect Comfort Club Membership with two maintenance visits per year and listed benefits. | 1 | $330.00 |
Total: $562.80
— Photo Documentation
31 photos from this repair
Photos recorded on-site by Mike during this service visit.
— Frequently Asked
Questions about this repair
What was documented about the thermostat or controls?
Nest thermostat unresponsive; system ran properly when thermostat was bypassed into cooling.
Does AZ Perfect Comfort service Phoenix?
Yes. AZ Perfect Comfort services Phoenix and the greater Phoenix Metro area. Call (602) 613-3489 to schedule.
Are these repairs guaranteed?
AZ Perfect Comfort Diamond Members receive our Lifetime Repair Guarantee — if the same failure returns, the repair is on us. All other repairs are covered by our standard workmanship warranty. Ask your technician about becoming a Diamond Member to unlock the lifetime guarantee.
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AZ Perfect Comfort has served Phoenix and greater Phoenix with same-day HVAC diagnostics and repair. Diamond Members get every repair backed by our Lifetime Repair Guarantee.