Standby generators
Permanently installed generators that start automatically when the power goes out.
GENERATOR INSTALLATION · MILL VALLEYGenerator Installation
Generator Installation
in Mill Valley, CA.
Backup power for Mill Valley homes facing PG&E shutoffs: standby generators, portable inlets and transfer switches, permitted and inspected.
Serving Sycamore Park, Blithedale Canyon, Cascade Canyon, Scott Valley, Middle Ridge and nearby Homestead Valley and the rest of Mill Valley. Share your address to confirm availability.
4.8 rating · 515+ reviewsHVAC & electrical, one teamPermits handledCA Lic #1081990
Backup power,
connected safely.
Standby generators and portable generator hookups installed with the right transfer equipment, so the house is powered safely and the utility line is never back-fed.
Portable generator inlets
An outdoor inlet and interlock or transfer switch, so a portable generator can power selected circuits without extension cords.
Transfer switches
Manual or automatic transfer equipment sized to the generator and the loads you want to keep on.
Critical-load panels
Fridge, furnace blower, internet, lights and medical equipment moved to a backed-up subpanel.
Load calculation
Generator size matched to what you actually need to run, not guesswork.
Permits and inspection
Electrical permit, city inspection and utility requirements handled by HAXX.
MILL VALLEY DETAILSGenerators in
Generators in
Mill Valley.
Mill Valley sits against Mount Tamalpais in wildfire country, and parts of the city were in a planned PG&E Public Safety Power Shutoff in July 2026. Many owners want a backup plan.
01
Portable inlet and interlock
A listed inlet and panel interlock lets a portable generator power chosen circuits safely.
02
Standby generators
Automatic units with a transfer switch, sized to the loads you need during an outage.
03
City submittal
Mill Valley asks for a site plan, specs, a single-line diagram, a gas line schematic and a sound calculation. HAXX prepares them.
What customers say
about HAXX.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
★★★★★
“Recently, my dishwasher stopped working, and they discovered it was actually an outlet issue. Not only did they diagnose it quickly, but they also fixed the outlet—saving me from calling an electrician. Reliable, professional, and skilled at handling both appliances and electrical issues.”
★★★★★
“I purchased a couple of ceiling fans and was reluctant due to how old my house was with old wiring so I wanted someone professional and trustworthy. They have been both!”
★★★★★
“Prompt and professional - they helped run a new thermostat wire through a wall and crawl space.”
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 electrical work by HAXX.
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.
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Subpanel Installation
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GOOD TO KNOW
Generator Installation in Mill Valley: questions, answered.
Do I need a permit for a generator in Mill Valley?
Yes. Standby generators need a mechanical submittal including a sound calculation. HAXX handles it.
Can I just plug a generator into an outlet?
No. Back-feeding is dangerous for you and line workers. Use a transfer switch or a listed inlet with an interlock.
Can I plug a generator into an outlet?
No. Back-feeding through an outlet is dangerous for you and for utility workers. Use an inlet with an interlock or a transfer switch.
What size generator do I need?
It depends on the circuits you want to keep powered. HAXX lists your critical loads and sizes the generator to them.
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.