No heat
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
Furnace not lighting, cycling off or blowing cold air? HAXX repairs gas furnaces in Millbrae homes and checks venting and CO safety on every visit.
Serving Mills Estates, Millbrae Highlands, Millbrae Meadows, Meadow Glen, Green Hills and Telescope Hills and the rest of Millbrae. Share your address to confirm availability.

Gas furnaces in attics, closets, garages and crawl spaces. Every repair visit includes basic safety checks on the burners and venting.
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
Furnaces that click, light and shut off are often a dirty flame sensor or a failing hot-surface igniter.
Limit switches, pressure switches and inducer motors checked in order.
Overheating from restricted airflow, a dirty filter or an oversized furnace.
Banging, squealing or a burning smell checked before the next cold night.
Venting, heat-exchanger visual check and carbon monoxide concerns raised in plain language.
Millbrae's cool, foggy months keep furnaces running much of the year. Many in postwar homes sit in crawlspaces, closets or garages and are well into their second decade.
Hot surface igniters, flame sensors, inducer motors, pressure switches and limit switches cause most no-heat calls.
Each visit includes a look at the flue, heat exchanger and combustion air, plus a carbon monoxide check.
Bay Area Air District rules will restrict sales of new gas furnaces starting in 2029. Repairs are not affected.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“Their technician was professional, honest, and took the time to explain the problem and the repair process clearly. Instead of pushing for an expensive replacement, they repaired our HVAC system and helped us save a significant amount of money. The work was completed carefully, and our air conditioner is now working well.”
“Thorough diagnostics of A/C system, identified and repaired the issue quickly!”
“Service was performed well and on time. Service person was highly skilled and provided easy to understand options to deal with the issue. Price for diagnostics was reasonable and easy to pay online.”
Brand, model and what it is doing. Photos of the label or error code help.
The technician tests the system and finds the cause, not just the symptom.
You see the repair price before work starts, and the options if a repair is not worth it.
The repair is completed and tested, or scheduled once the part arrives.
A closer look at recent heating and cooling work by HAXX.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
System recharge and brazing correction.

Carrier furnace diagnosis and repair.

Attic plenum resealing.

Gas furnace service.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Yes. The 2029 Air District rule covers the sale of new gas furnaces, not repairs of existing ones. HAXX repairs all major brands.
Yes. The City of Millbrae lists furnace replacement as an over-the-counter permit. HAXX files it and schedules the inspection.
If the furnace is old or the repair is expensive, it is worth pricing a heat pump, which also adds cooling. HAXX can quote both.
No. Turn it off, leave the house if the smell is strong, and call PG&E or 911. Call HAXX for the repair once the area is safe.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
