HVAC service · Bay Area
Furnace & Heating Repair · Bay Area
Gas furnaces, wall heaters, ignitors and flame sensors, draft inducers, and heat exchangers. repair timing is confirmed after diagnosis.
- $99 diagnostic (credited toward the repair)
- Same or next-day best effort
- Insured · CSLB #1136642
What we do. What we fix.
What we do
ADRIUM repairs gas furnaces, wall heaters, and floor heaters across 56 Bay Area cities: ignitors, flame sensors, draft inducers, gas valves, and a heat-exchanger safety check on every call. We diagnose the fault on site, then provide a written repair estimate before any work starts. A no-heat call on a cold Bay Area morning is the most common winter job and the most common over-quote; we diagnose to the failure and price the part, not the furnace.
The truck carries the parts that fail: hot-surface ignitors, flame sensors, gas valves, pressure switches, and draft-inducer motors for the common cabinets. We test combustion and verify the heat exchanger is intact on every no-heat call, because a cracked exchanger is a carbon-monoxide safety issue that we will not let a customer run.
How repair pricing works
The $99 on-site diagnosis is credited toward the repair. After testing the system, we provide the confirmed scope, parts, labor, and repair timing in a written estimate before work starts.
- Hot-surface ignitor: The most common no-heat cause. The ceramic ignitor cracks or burns out and the furnace cannot light.
- Flame sensor: Furnace lights, then shuts off after a few seconds. A dirty or failed sensor cannot prove the flame, so the board kills the gas as a safety.
- Draft-inducer motor: The furnace tries to start, but the pressure switch never closes because the inducer is not pulling combustion air.
| Common no-heat part | Typical repair cost | What you see |
|---|---|---|
| Hot-surface ignitor | Quoted after on-site diagnosis | No ignition, furnace will not light |
| Flame sensor | Quoted after on-site diagnosis | Lights, then shuts off after a few seconds |
| Draft-inducer motor | Quoted after on-site diagnosis | Tries to start, locks out before ignition |
A Draft Inducer, Replaced
Common issues. Typical repair.
Furnace lights then shuts off. Flame sensor or a flame-rectification fault. We clean or replace the sensor and confirm a stable microamp signal on a full cycle before we leave.
No ignition at all. Cracked hot-surface ignitor, most often. We confirm with a resistance check rather than swapping parts on a guess. Less commonly a failed gas valve or a control board.
Furnace short-cycles. Overheating from low airflow (dirty filter, blocked return, failing blower) trips the high-limit and shuts the burner down repeatedly. We find the airflow restriction instead of resetting the limit and walking away.
Blower runs constantly, no heat. Control-board fan fault or a stuck fan relay. We meter the board outputs to separate a board failure from a thermostat wiring problem.
Wall and floor heaters. Older Bay Area homes still run wall furnaces and floor heaters. We service the ignition, thermocouple, and gas valve on these, and when one is past safe repair we will tell you and price a code-compliant replacement.
Heat exchanger and carbon monoxide
On every furnace call we inspect the heat exchanger and check combustion. A cracked exchanger can leak carbon monoxide into the home. If we find one, we red-tag the unit, explain why, and price the repair or replacement. We will not patch around a safety failure to save a customer money in the short term.
Our HVAC division
Heating is the focus of our sister brand, Bay Area HVAC Service. Same owner, same EPA and CSLB credentials, same technician on the truck.
Furnace & Heating brands, by tier.
Cities we cover across the Bay Area.
- Furnace & Heating Repair in San Ramon
- Furnace & Heating Repair in Danville
- Furnace & Heating Repair in Walnut Creek
- Furnace & Heating Repair in Lafayette
- Furnace & Heating Repair in Pleasanton
- Furnace & Heating Repair in Dublin
- Furnace & Heating Repair in Livermore
- Furnace & Heating Repair in Palo Alto
Don't see your city? We cover most of the Bay Area: Tri-Valley, Diablo Valley, Inner East Bay, Peninsula, and South Bay. Ask when you call.
Pricing & warranty
No mystery numbers.
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Diagnostic
$99
credited toward the repair.
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Repair warranty
3 mo to 1 yr
Parts + labor on completed repairs. Term varies by part.
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Repair cost
Quoted
Final cost depends on parts and the time the job takes. Written quote before we start.
What do customers ask about Furnace & Heating Repair?
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My furnace lights and then shuts off after a few seconds. What is wrong?
A dirty or failed flame sensor is one possibility, but ignition and venting faults can look similar. We test the sequence on site and provide a written repair estimate before work starts. -
What does a typical no-heat repair cost?
The on-site diagnosis is $99 and is credited toward the repair. After testing the ignition sequence, we provide an itemized written estimate before work starts. -
Is a cracked heat exchanger actually dangerous?
Yes. A cracked exchanger can leak carbon monoxide into the home, which is why we inspect the heat exchanger and check combustion on every no-heat call. If we find a crack we red-tag the unit, explain why, and price the repair or replacement. We do not patch around a safety failure. -
Do you service old wall furnaces and floor heaters?
Yes. Older Bay Area homes still run them, and we service the ignition, thermocouple, and gas valve under CSLB #1136642. When one is past safe repair we say so and price a code-compliant replacement instead of nursing along a heater that should be retired. -
Why does my furnace keep starting and stopping?
Short cycling is usually overheating from low airflow: a dirty filter, a blocked return, or a failing blower trips the high-limit switch and shuts the burner down. We find the airflow restriction and fix it. Resetting the limit and walking away just sets up the next no-heat call.
Pricing HVAC repair starts with a $99 diagnostic, credited toward the approved repair — that makes the service call $0 with a completed repair. Considering a new HVAC system? The in-home estimate visit is free.
Credentials Owner-operated by Andrew · CSLB #1136642 · EPA #1279674151528 · BBB A+ · Repairs carry a 1-year warranty; new-system coverage: 10 years manufacturer parts + 2 years labor. Warranty and callback details →