Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Swapping a gas furnace and AC for a heat pump in Windsor? HAXX sizes the system, checks the panel and pulls the Town of Windsor permit through eTRAKiT.
Serving Old Downtown Windsor, the Town Green, Vinecrest, Keiser Park and the Shiloh Road area and the rest of Windsor. 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.
Windsor's Building Division takes permit applications online through eTRAKiT and enforces state Title 24 energy rules. Electricity comes from Sonoma Clean Power, with PG&E delivering it.
Windsor sits inland in the Russian River valley, so cooling load matters as much as heating. HAXX runs a room-by-room load calculation instead of matching the old tonnage.
Sonoma Clean Power lists cash rebates for home heating and cooling upgrades. Check current eligibility and terms with SCP before you buy.
Mechanical and electrical work is permitted through the Town of Windsor. Inspections can be booked online in eTRAKiT.
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.
Yes. Replacing heating or cooling equipment requires a Town of Windsor building permit. HAXX applies through eTRAKiT and is present for the inspection.
Sonoma Clean Power, Windsor's electricity provider, lists rebates for heating and cooling upgrades. Amounts and rules change, so confirm with SCP before signing a contract.
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.
