Do you actually have someone local, or is this dispatched from San Ramon?

Our technician covering the Peninsula is based right here in San Mateo, so San Mateo calls don't route through San Ramon first. That's part of why we can cover Burlingame, Belmont, and Foster City well too.

One zone of my Daikin multi-zone system isn't cooling right, but the rest of the house is fine. What's wrong?

That points to the expansion valve or branch box for that specific zone, not a failure of the whole system. I read the zone's electronic controls to isolate which part is at fault before recommending any repair.

My upstairs room stays warm on hot days even with the Daikin running. Is the unit undersized?

Sometimes, but more often on San Mateo's upstairs additions it's a dirty coil or a charge that's drifted low rather than a sizing problem. I check both before telling you the unit itself needs to change.

DAIKIN · SAN MATEO

Service · All Daikin Models

Daikin Ductless & Heat Pump Repair · San Mateo, CA

Daikin ductless and heat pump repair in San Mateo, home base for our Peninsula technician, from the restaurant row on B Street to the tree-lined blocks off 25th Avenue.

$99 diagnostic (credited toward the repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Daikin in San Mateo

Daikin in San Mateo kitchens.

San Mateo is where our Peninsula technician is based, so this is one of the cities we can reach quickest without a drive across the bay. The housing runs from the older streets around 25th Avenue and the Hillsdale area to the restaurant-lined blocks near B Street downtown, and Daikin ductless heads show up in both the single-family additions and the upstairs rooms that central systems don't reach evenly.

San Mateo's Mid-Peninsula climate is milder than the Tri-Valley heat we see at our San Ramon base, but it still gets warm enough in late summer that a neglected outdoor unit or a low charge shows up as weak cooling on the hottest days. I still check charge and coil condition the same way I would on a hotter inland call, just with different baseline numbers in mind.

The $99 diagnostic is credited toward the repair, and I write the quote before doing any work. We're CSLB #1136642, EPA 608 certified, and we run HVAC through Bay Area HVAC Service, 7 days a week, with local coverage right here in San Mateo.

Common repairs we do

What we close on the truck.

Weak cooling in upstairs additions. A number of San Mateo homes near Hillsdale and 25th Avenue added a Daikin head or small ducted zone upstairs after the fact, and on the warmer late-summer days that zone falls behind if the coil is dirty or the charge has drifted low. I clean the coil and check subcooling against spec before touching anything else.
Electronic expansion valve faults on multi-zone systems. Larger San Mateo homes running Daikin multi-zone systems sometimes throw a fault tied to one zone's electronic expansion valve, where that zone won't cool or heat right while the rest of the house is fine. I read the EEV step count on the affected zone before deciding whether it's the valve or the branch box.
Communication fault between indoor and outdoor units. A communication fault between the indoor head and outdoor unit shows up as a system that won't start or drops out mid-cycle, and it usually traces to a wiring connection rather than a bad board. I meter the communication wire run before replacing any electronics.

Models we service

Daikin product lines.

Inverter heat pumps
Ductless and multi-zone mini-splits
Gas furnaces
Fit and slim-profile systems
Air handlers

Pricing and warranty

What it costs. What we stand behind.

$99

Diagnostic visit. Credited toward the repair.
Written

3 months standard, 1 year on inverter boards, up to 2 years on sealed-system rebuilds. Quoted in writing before work starts.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

Daikin service in neighboring cities.

More cities

Daikin across our service area.

FAQ

Daikin in San Mateo questions, answered.

Do you actually have someone local, or is this dispatched from San Ramon?

Our technician covering the Peninsula is based right here in San Mateo, so San Mateo calls don't route through San Ramon first. That's part of why we can cover Burlingame, Belmont, and Foster City well too.
One zone of my Daikin multi-zone system isn't cooling right, but the rest of the house is fine. What's wrong?

That points to the expansion valve or branch box for that specific zone, not a failure of the whole system. I read the zone's electronic controls to isolate which part is at fault before recommending any repair.
My upstairs room stays warm on hot days even with the Daikin running. Is the unit undersized?

Sometimes, but more often on San Mateo's upstairs additions it's a dirty coil or a charge that's drifted low rather than a sizing problem. I check both before telling you the unit itself needs to change.

Need Daikin service in San Mateo?

Tell us what is broken. We will quote it.