The Report
What the homeowner told us
South unit won't heat, blowing cold air and the fan won't turn on.
Repair · Scottsdale
High-Voltage Wiring Repair in Scottsdale — November 2025
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Documented ServiceFindings supported by service notes
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Reported by the Homeowner
South unit won't heat, blowing cold air and the fan won't turn on.
Scottsdale homeowner · November 21, 2025
Findings & Work Performed
What Kyle documented during the visit
Faulty thermostat; system would run properly when thermostat was bypassed. Burned high-voltage wiring observed.
Repaired high-voltage wiring. Installed Honeywell T4 thermostat. Tested in heat mode.
The Verification
Verification performed
Tested in heat mode.
— Related Services
How this repair fits into our Phoenix HVAC service
This repair is one example of the Heating Repair work AZ Perfect Comfort performs across Scottsdale, AZ. You can browse every case study we have published for this type of work in the High-Voltage Wiring Repair 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
Exactly what was installed
| Item | Description | Qty | Price |
|---|---|---|---|
| Minor repair of low or high voltage wiring; inspected other wiring and electrical connections for safe operation. | 1 | $318.00 | |
| Trip charge. | 1 | $99.95 | |
| Trip charge waived with paid repair during business hours. | 1 | $-99.95 | |
| Remove existing thermostat and install a new basic programmable thermostat; test system operations. | 1 | $177.00 |
Total: $495.00
— Photo Documentation
12 photos from this repair
Every step of this repair was documented on-site by Kyle.
— Frequently Asked
Questions about this repair
What was documented about the HVAC system?
Faulty thermostat; system would run properly when thermostat was bypassed. Burned high-voltage wiring observed.
Does AZ Perfect Comfort service Scottsdale?
Yes. AZ Perfect Comfort services Scottsdale 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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More real repair case studies from AZ Perfect Comfort
— Same Problem At Your Home?
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AZ Perfect Comfort has served Scottsdale and greater Phoenix with same-day HVAC diagnostics and repair. Diamond Members get every repair backed by our Lifetime Repair Guarantee.