Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Moving a Corte Madera home off a gas furnace? HAXX sizes the heat pump, runs a panel load calculation and pulls the Town building permit.
Serving Christmas Tree Hill, Old Corte Madera Square, Madera Gardens, Chapman Park and the Cove neighborhood near the bay and the rest of Corte Madera. 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.
Corte Madera adopted a 2025 reach code for existing buildings. It does not force a working furnace out, but larger remodels and panel upgrades come with extra electrification and EV readiness steps.
For homes built before 2011, projects over 500 sq. ft. must meet an efficiency score, and kitchen, laundry or panel work adds electric readiness. A heat pump can help meet those goals.
MCE serves Corte Madera and lists heat pump rebates, plus a rebate finder that checks income-based offers. Confirm eligibility with MCE.
Homes with attic or crawlspace ducts can take a ducted heat pump. Hillside homes with no ducts often suit ductless or slim-ducted units.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“Their technician was professional, honest, and took the time to explain the problem and the repair process clearly. Instead of pushing for an expensive replacement, they repaired our HVAC system and helped us save a significant amount of money. The work was completed carefully, and our air conditioner is now working well.”
“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.”
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.
Not by itself. The 2025 reach code applies to larger alterations, kitchen and laundry remodels and panel upgrades. Ask the Town Building Division what applies to your project.
A Town building permit covering the mechanical and electrical work. HAXX puts together the permit package and attends the final inspection.
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.
