Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Replacing a wall heater, floor furnace or aging AC in San Pablo? HAXX sizes a heat pump to the house, checks the panel and files the City permit through eTRAKiT.
Serving Hasford Heights, the Rumrill Boulevard area, Road 20 and Church Lane near Contra Costa College, plus nearby Rollingwood and Tara Hills and the rest of San Pablo. 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.
San Pablo's mild bayside climate suits heat pumps, but the city's compact homes leave little room for oversized equipment or long new duct runs.
A room-by-room load calculation keeps equipment matched to compact San Pablo floor plans, which avoids short cycling and noise.
Homes with usable attic or crawlspace ducts can take a ducted heat pump. Homes heated by wall units often do better with one or more ductless heads.
Mechanical and electrical permits are applied for on the City of San Pablo Online Permit Portal (eTRAKiT) and inspected by the Building Division.
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.
San Pablo joined MCE in 2014, with PG&E delivering the power. MCE and PG&E list energy efficiency programs; confirm current eligibility directly with them.
Yes. A heat pump install needs City of San Pablo permits and inspection. HAXX applies through the eTRAKiT portal 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.
