Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
HEAT PUMP INSTALLATION · SUNNYVALEHeat Pump Installation
Heat Pump Installation
in Sunnyvale, CA.
Replacing a gas furnace or an old AC in Sunnyvale? HAXX designs and installs heat pumps sized to the house, with the panel checked before anything is ordered.
Serving Cherry Chase, Ortega Park, Lakewood Village, Ponderosa Park, Fairbrae and the Heritage District and the rest of Sunnyvale. Share your address to confirm availability.
4.8 rating · 515+ reviewsHVAC & electrical, one teamPermits handledCA Lic #1081990
Heat pump installation,
planned properly.
A heat pump replaces a furnace and AC with one system for heating and cooling. Good results come from sizing, layout and electrical planning done before equipment is ordered.
Ducted or ductless
Keep existing ducts when they are in good shape, or go ductless where ducts are missing, leaky or impossible to run.
Electrical capacity check
HAXX electricians review the panel and service before the install, so a surprise panel upgrade does not appear mid-project.
Brands we install
Mitsubishi Electric and American Standard systems, among others, matched to the home and budget.
Permits and inspection
HAXX pulls the mechanical and electrical permits and meets the city inspector.
Rebate paperwork
We point you to the rebates your address qualifies for and provide the equipment documentation programs ask for.
SUNNYVALE DETAILSWhat to know before a
What to know before a
Sunnyvale heat pump.
Sunnyvale adopted a reach code for existing single-family homes in 2025, with enforcement set to start at the end of 2026. It shapes what you can install, and the city adds its own rebates to SVCE's.
01
The AC replacement rule
Under Sunnyvale's reach code, a replaced air conditioner in a single-family home must be a heat pump. Repairs are not affected. Planning for a heat pump now avoids a second decision later.
02
City and SVCE rebates
Sunnyvale lists up to $4,500 in rebates for heat pump HVAC, and Silicon Valley Clean Energy offers its own heat pump and electrical-work rebates. Confirm current terms before you sign.
03
Eichlers and ranch homes
Eichlers with radiant floors usually get ductless or slim-ducted systems. Ranch homes with attic ducts can take a ducted heat pump with a duct check.
What customers say
about HAXX.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
★★★★★
“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.”
A CLEAR NEXT STEPFrom your first question
From your first question
to a considered plan.
01
Share your starting point
Existing equipment, home layout and what you want to improve.
02
Review the property
Sizing, airflow, equipment placement and electrical needs.
03
Compare the scope
Options, exclusions, permit requirements and any eligible incentives.
04
Plan installation
Confirm equipment, scheduling and handover details with HAXX.
HAXX ON SITEReal work.
Real work.
Real homes and businesses.
A closer look at recent heating and cooling work by HAXX. Projects in Sunnyvale are marked with the city.
THE PEOPLE BEHIND THE WORKHands-on work.
Hands-on work.
A real look inside.
On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projectsRecent Projects
Heat Pump Installation
Heat pump installation.
Outdoor Heat Pump Installation
Outdoor heat pump installation.
Heat Pump Air Handler Installation
Heat pump air handler installation.
American Standard Rooftop Package Unit
American standard rooftop package unit.
Sunnyvale Leaking Coil Replacement
Leaking coil replacement.
Sunnyvale System Recharge and Brazing Correction
System recharge and brazing correction.
Heat Pump Air Handler Service
Heat pump air handler service.
Lennox AC Installation
Lennox ac installation.
GOOD TO KNOW
Heat Pump Installation in Sunnyvale: questions, answered.
Are there heat pump rebates in Sunnyvale?
Yes. The City of Sunnyvale lists up to $4,500 in heat pump HVAC rebates, and SVCE offers rebates for heat pump systems that replace gas heating. Amounts change, so verify before you sign.
Do I need a permit for a heat pump in Sunnyvale?
Yes. HAXX applies for the mechanical and electrical permits through the City of Sunnyvale and meets the inspector.
Can a heat pump heat my house on cold nights?
Yes. Bay Area winters are mild, and correctly sized heat pumps heat comfortably through them. Sizing and duct condition matter more than the brand.
How long does an installation take?
Most single-system replacements take one to three days on site. Permits, equipment lead times and any electrical work add to the overall timeline.
LET’S TALK ABOUT YOUR PROPERTYTell us what you need.
Tell us what you need.
We’ll start there.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.