Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Installing a heat pump in Vacaville? HAXX sizes it for the city's summer heat, checks the panel first and handles the City of Vacaville permit.
Serving Downtown Vacaville, Browns Valley, Alamo, North Village, Lagoon Valley and the Vaca Valley area and the rest of Vacaville. Share your address to confirm availability.

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.
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Keep existing ducts when they are in good shape, or go ductless where ducts are missing, leaky or impossible to run.
HAXX electricians review the panel and service before the install, so a surprise panel upgrade does not appear mid-project.
Mitsubishi Electric and American Standard systems, among others, matched to the home and budget.
HAXX pulls the mechanical and electrical permits and meets the city inspector.
We point you to the rebates your address qualifies for and provide the equipment documentation programs ask for.
Vacaville is in PG&E territory and does not appear on the statewide list of adopted local reach codes, so California's base energy code governs most replacements. Confirm current rules with the Building Division.
July daytime highs average in the upper 90s. HAXX sizes the system from a Manual J load calculation so it holds temperature without short cycling.
Many 1970s to 1990s tract homes have attic ducts. Leaky or undersized runs are tested and fixed so the new system delivers its rated capacity.
PG&E, BayREN and state programs list heat pump incentives from time to time. Confirm eligibility and current terms with each program before you sign.
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.”
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.
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
Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Lennox ac installation.

Compressor replacement.

Mitsubishi leak detection.

Leaking coil replacement.
Vacaville is not listed with an adopted local reach code, so state code applies. HAXX confirms the requirements with the City of Vacaville Building Division for each project.
Mechanical and electrical work of this kind is permitted through the city's eTRAKiT portal. HAXX submits the application and meets the inspector.
Yes. Bay Area winters are mild, and correctly sized heat pumps heat comfortably through them. Sizing and duct condition matter more than the brand.
Most single-system replacements take one to three days on site. Permits, equipment lead times and any electrical work add to the overall timeline.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
