Most of Concord went up between the 1950s and 70s, and a lot of that housing is on its last system. Onzone handles AC installation and replacement across Concord.
We install across Concord, including the Todos Santos Plaza area, Ygnacio Valley, and Clayton Valley. Manual J load calculation on every job, permits pulled, and a written line-item proposal before anything is ordered.
Most of Concord was built between the 1950s and 70s, so we do a steady volume of full-system replacements here as original equipment ages out. We install from the Todos Santos core through Ygnacio and Clayton Valley.
Concord sits inland in the Diablo Valley, with July and August afternoons in the high 80s and hotter in a heat wave. We size to that real load with a Manual J calc so an older tract home gets correct, efficient tonnage.
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.
Yes, both included and scheduled by us.
We evaluate them on the site visit. Often they are fine with sealing; sometimes a run needs replacing. Either way it is in the written proposal before work starts.
Most replacements finish in a day. Duct or electrical work adds time, stated up front.
If it has life left, see AC repair in Concord. We push replacement only when the repair stops making sense.
Also in Concord: AC Repair, Heat Pump Installation, Furnace Installation.
