Heating & cooling
AC & HVAC repair in Sunnyvale.
HVAC for the remodel city: kitchens got redone, the furnace in the attic did not.
Sunnyvale has a pattern we see on almost every call: a house remodeled to a high standard everywhere except the mechanical system. Cherry Chase and Cumberland West in 94087 are full of 1950s and 60s ranches with new kitchens, new roofs, and the same furnace that was there when the sellers bought the place. The remodel money went where you can see it. Then the heat exchanger cracks or the condenser dies in a hot week, and the HVAC decision arrives all at once instead of on a schedule.
The construction era sets the constraints. These low-slung ranch homes carry shallow attics and tight horizontal furnace installs, which limits what equipment physically fits and makes workmanship matter more than brand. The microclimate splits the city too: the 94089 side near Moffett and the Lockheed corridor runs cooler with bay influence, while 94087 toward the foothills sees the real cooling load. The same system spec does not fit both ends of town, and we size to the address, not the city average.
Old Sunnyvale in 94086 and the Murphy Avenue area townhomes in 94085 round out the mix with compact systems and newer construction. We run Sunnyvale on the same South Bay route day as Mountain View and Cupertino, seven days a week from San Ramon. EPA Section 608 Universal certified, CSLB #1136642. Diagnostic is $75, credited when you book the repair.
Working in shallow attics without wrecking the job
A horizontal furnace lying in a 1950s Sunnyvale attic is a tight, hot, unforgiving workspace, and a lot of the bad installs we get called to fix failed there: flex duct crushed under a rafter, a condensate line with no slope, a unit oversized because nobody wanted to do a load calculation in a 110-degree attic. We do the calculation, we pick equipment that actually fits the cavity, and we photograph the finished work so you can see what you paid for without climbing up there. Repairs to existing attic systems, blower motors, igniters, control boards, are everyday work under furnace repair.
When the remodel finally reaches the HVAC
If the rest of the house has been brought up to date, replacing a 30-year-old furnace and condenser with a heat pump finishes the job with one machine that handles Sunnyvale's mild winters and the warming summers in 94087. Panel capacity is the usual checkpoint on these ranches, and we assess it at the estimate so the electrical line item is visible up front. Rebate programs for Sunnyvale move by cycle, so we confirm what is actually paying when we write your quote rather than promising stale numbers. See HVAC installation.
For additions and garage conversions, which Sunnyvale produces constantly, a ductless mini-split beats stretching fifty-year-old ductwork into a new room. We install Mitsubishi and Daikin and hold factory training on both.
The maintenance case on aging tract systems
The cheapest repair is the one a spring inspection prevents. On equipment past 20 years, our maintenance plan tests capacitors under load, verifies charge, and cleans the coils that Sunnyvale's dry summer dust packs solid. It is the difference between scheduling a fix in May and competing for emergency slots in a September heat wave.
Common questions, Sunnyvale.
- My Sunnyvale ranch has a furnace in a very shallow attic. Can you replace it?
Yes, that is standard Sunnyvale work. We measure the cavity, run a real load calculation, and select horizontal equipment that physically fits and breathes properly. Bad attic installs are one of the most common messes we get called to redo, so we photograph our finished work for you.
- Should I add cooling for an addition or garage conversion?
Usually with a ductless mini-split rather than extending the old ductwork. The original 1950s or 60s duct system was not sized for extra rooms, and stretching it starves the whole house. One ductless head handles the new space independently and often outperforms the central system in it.
- What does a visit cost in Sunnyvale?
The diagnostic is $75 and it comes off the bill when you book the repair with us. Written, itemized quote before work begins. EPA Section 608 Universal certified, CSLB #1136642. We run Sunnyvale with Mountain View and Cupertino on the same route day, seven days a week.
Heating & cooling