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N.02 / CASTRO VALLEY

AC Installation in Castro Valley.

Castro Valley runs from hillside homes down to Eichlers with no duct space anywhere in the house. We size the install to whichever one you have, and we install both without treating either as the odd job out.

We install across Castro Valley, Castro Village, the Lake Chabot area, Palomares Hills, and Five Canyons included. Every job gets a Manual J load calculation, a pulled permit, and a written line item proposal before a single part goes on order.

New residential AC condenser installed beside a home in Castro Valley, Bay Area
What we install in Castro Valley

Sized right, installed once.

Why Onzone in Castro Valley

Why Castro Valley calls Onzone.

Castro Valley-local installs

Castro Valley mixes mid-century hillside homes with Eichlers that have no duct space at all. An Eichler almost always means a ductless install, while the hillside tract homes take a standard ducted system. We do both, and we tell you which one your house needs before we quote it.

Sized for the local climate

The hills and the bay moderate a lot of Castro Valley, so many homes need less cooling than an inland house does. Canyon and hillside spots are the exception, they still get hot. We run the Manual J on every install so the number matches your address, not the neighborhood average.

Written proposal, permits included

You get a line-item proposal covering equipment, labor, permit, and disposal before anything is ordered. We pull the permit and handle the city inspection, so the price you approve is the price you pay.

FAQ

Castro Valley AC installation questions.

Do you pull the Castro Valley permit?

Yes, both permit and inspection are included and we handle them start to finish.

We have an Eichler with no ductwork. What do you install?

A ductless mini split, built for exactly that situation. It cools room by room with no duct space required. See ductless mini-split.

How do you size a hillside home?

With a Manual J calc that accounts for elevation, exposure, and glass. Hillside and canyon spots run warmer than the valley floor, and the calc reflects that instead of guessing.

Just need a repair?

Start with AC repair in Castro Valley. We only quote replacement once a repair stops making sense.

Nearby areas

AC installation near Castro Valley.

Also in Castro Valley: AC Repair, HVAC Installation, Heat Pump Installation, Furnace Installation.

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