Furnace Repair in Berkeley & the East Bay
$79 diagnostic fee. All brands serviced. EPA 608 certified, factory-trained technicians. Written repair quote before any work begins. CSLB #1146520.
★★★★★
“I had a duct fan fail in a very heat sensitive wine cellar and Aarvaks came same day to diagnose issue. They ordered the part and picked it up the next day and everything was fixed within 48 hours. Personal service. Professional service. They know their stuff. They are prompt and reliable. Trustworthy.”
Repair Process
What Happens During a Furnace Diagnostic
The $79 diagnostic covers a full system inspection. Before we recommend any repair, we identify the root cause — not just the symptom.
- Visual inspection of the full system — heat exchanger, burners, venting, and all accessible components
- Electrical and gas pressure testing — verify incoming voltage, capacitor condition, and gas pressure at the manifold
- Ignition system check — test igniter operation, flame sensor signal, and control board response
- Blower motor and airflow verification — check motor amp draw, belt condition, and static pressure across the system
- Safety control testing — cycle all limit switches, pressure switches, and rollout controls
- Carbon monoxide check — verify combustion gases are venting correctly and not entering the living space
- Written repair recommendation with itemized pricing — no work begins without your approval
What We Fix
Common Furnace Repairs
Aarvaks technicians service all furnace brands — Carrier, Bosch, Lennox, Trane, Goodman, Rheem, American Standard, and more. If it has a gas line and a blower, we service it.
Ignition & Sensors
Hot surface igniter replacement, flame sensor cleaning or replacement, thermocouple, and control board diagnosis. Most ignition faults are identified and resolved in a single visit.
Blower & Motor
Blower motor replacement, run capacitor, draft inducer motor, blower belt and wheel. Blower faults often cause the furnace to cycle off on high-limit — we trace the root cause before recommending parts.
Heat Exchanger & Gas Components
Cracked heat exchanger inspection and replacement, gas valve, pressure switch, limit switch, and manifold repairs. A cracked heat exchanger is a carbon monoxide risk — we will not leave a system running if one is found.
Transparent Pricing
Furnace Repair Cost
The diagnostic fee covers the full inspection and written repair recommendation. Repair costs vary by part and labor required. We provide itemized pricing before any work begins — no surprises on the invoice.
$79
Residential diagnostic fee
Waived if we do the repair
$189
Commercial diagnostic fee
All commercial equipment brands
All Brands
Carrier, Lennox, Trane, Goodman
Rheem, American Standard & more
Written itemized quote provided before any repair work begins. Diagnostic fee waived if we do the repair. Financing available on qualifying repairs.
Common Questions
Frequently Asked Questions
What does the $79 diagnostic fee cover?
The $79 fee covers a full system inspection — electrical testing, gas pressure verification, ignition system check, blower motor evaluation, safety control testing, and a carbon monoxide check. At the end, you receive a written repair recommendation with itemized pricing. No work begins until you approve it.
Is the diagnostic fee waived if you do the repair?
Yes. The diagnostic fee is waived if we do the repair.
Do you service all furnace brands?
Yes. We service all residential and commercial furnace brands — Carrier, Bosch, Lennox, Trane, Goodman, Rheem, American Standard, and others. We are a Carrier Authorized Dealer, but our diagnostic and repair work covers any brand.
How do I know if my furnace needs repair or replacement?
The diagnostic will tell you. If the repair cost approaches or exceeds half the cost of a comparable new system, or if the heat exchanger is cracked, replacement is usually the better long-term investment. We give you both figures — repair cost and replacement cost — so you can decide without pressure.
My furnace starts then shuts off after a few minutes. What’s wrong?
Short cycling — where the furnace fires and shuts off repeatedly — is most commonly caused by a dirty flame sensor, a failing limit switch, a clogged filter restricting airflow, or an overheating blower motor. It can also indicate a cracked heat exchanger. A diagnostic will identify the root cause.
My furnace isn’t igniting at all. Is that an emergency?
A furnace that fails to ignite is not producing heat, but it is also not producing carbon monoxide. If you smell gas, leave the home immediately and call PG&E at 1-800-743-5000 before calling us. If there is no gas smell, book a diagnostic appointment and we will identify the ignition fault.
Furnace Not Working?
$79 diagnostic. Written repair quote before any work begins. All brands serviced. Serving Berkeley and the East Bay since 1929.