Replace or repair
A furnace past 15 to 20 years old, with a cracked heat exchanger or repeat part failures, usually costs less to replace than to keep fixing.
Furnace installation and replacement in Mountain View: HAXX sizes the new furnace to your home, checks venting, gas line and ducts, and installs it with permits.
Serving Old Mountain View, Monta Loma, Waverly Park and Cuesta Park and the rest of Mountain View. Share your address to confirm availability.

Gas furnace replacement and new installs, with venting, gas line and ducts checked first. HAXX quotes a heat pump on the same visit, so you can compare.
A furnace past 15 to 20 years old, with a cracked heat exchanger or repeat part failures, usually costs less to replace than to keep fixing.
A load calculation for the house instead of the old furnace label. An oversized furnace short-cycles, heats unevenly and wears out early.
Flue, combustion air and gas piping checked for the new furnace, including high-efficiency models that vent through PVC.
Same-location swaps and horizontal attic installs, with a proper platform, drain pan, service access and clearances.
Replacing both keeps the furnace and coil matched. A heat pump can also do both jobs in one system.
Mechanical permit pulled, combustion and carbon monoxide checks done, city inspection scheduled.
Plenty of Mountain View homes still heat with gas furnaces, many of them well into their second decade. When yours is near the end of its life, a planned replacement beats an emergency swap on the first cold night.
Winter nights in the Santa Clara Valley often drop into the 30s, and morning warm-ups are when a furnace works hardest. HAXX runs a load calculation instead of copying the old furnace size, so the new one heats evenly without short-cycling.
Replacing a gas furnace in Mountain View is allowed today. Bay Area Air District rules limit sales of new gas furnaces starting in 2029, so this may be the last gas furnace in the house. HAXX quotes a heat pump on the same visit.
Choosing a heat pump instead? Programs open to Mountain View homes include SVCE Home Rebates and SVCE Full-Service Home Upgrades. Gas furnace replacements generally do not qualify. Current amounts are on the HAXX rebates page.
A furnace replacement in Mountain View needs a mechanical permit. HAXX pulls it, runs combustion and carbon monoxide checks, and meets the inspector.
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“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.”
“Our commercial building had several HVAC problems, and their team carefully diagnosed each unit, explained the available options, and never pressured us into unnecessary replacements. They worked hard to repair what could be repaired and kept us informed throughout the process.”
Existing equipment, home layout and what you want to improve.
Sizing, airflow, equipment placement and electrical needs.
Options, exclusions, permit requirements and any eligible incentives.
Confirm equipment, scheduling and handover details with HAXX.
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Yes. Replacing a furnace needs a mechanical permit and a final inspection. HAXX pulls the permit, schedules the inspection and is on site for it.
It depends on the house, the ducts and your electrical panel. HAXX quotes both on the same visit, and heat pump rebates are available to Mountain View homes, so you can compare the full cost before deciding.
A straightforward gas furnace replacement starts around $2,500, and a furnace with a new AC around $3,500. The final price depends on size, efficiency, venting, access and permits. You get a written quote before work starts.
Most same-location replacements are finished in one day. Attic installs, venting changes or a new gas line can add a day.
Yes. Replacing a gas furnace is still allowed in Bay Area homes. Rules are moving toward zero-emission heating, so HAXX also quotes a heat pump on the same visit.
Share the property, equipment and questions you have in mind.
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Call HAXX to discuss your property and scheduling.
