Do you cover Foster City directly, or is it an add-on to San Mateo?

Foster City is part of the same coverage area as San Mateo, and our Peninsula technician is based right next door in San Mateo County. We don't promise same-day on every call, but this is one of the closer stops we make.

Our machine sits mostly unused during the week. Does that matter?

It does. Machines that sit idle for days dry out seals and gaskets faster than ones running daily, so if yours leaks the first time it gets turned on after a quiet stretch, that is likely why.

What's the process if we need a repair?

The diagnostic runs $99 and gets credited toward the repair. The quote is written down before I start pulling the machine apart.

DONPER · FOSTER CITY

Service · All Donper Models

Donper Frozen Beverage Machine Repair · Foster City, CA

Donper frozen beverage repair for Foster City's waterfront cafes and clubhouse machines.

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

Call (925) 999-4095

Donper in Foster City

Donper commercial service.

Foster City is a planned community built around the lagoons, and a lot of the Donper machines here sit in condo and townhome clubhouses, the grocery delis along Foster City Boulevard, and the offices near Metro Center rather than standalone restaurants. That changes the failure pattern some, since these units often sit idle between weekends instead of running all day.

A machine that sits unused for stretches dries out its seals and gaskets faster than one running constantly, so that is often the first thing I check on a clubhouse or amenity-room unit. I diagnose the real cause before quoting, and the $99 diagnostic gets credited toward the repair.

Refrigerant handling is licensed under CSLB #1136642 and covered by my EPA 608 certification, and our Peninsula technician covers Foster City as part of the San Mateo area.

Common repairs we do

What we close on the truck.

Barrel seal and gasket replacement. Machines that sit idle between uses dry out and crack their seals faster than you would expect, and that shows up as leaking mix the next time someone turns the unit back on. I replace the seals and gaskets so it holds pressure again.
Compressor and sealed system repair. A barrel that stays soupy or a compressor that will not hold a steady cycle gets checked for charge and head pressure before I decide if the compressor needs replacing.
Control board and mix sensor faults. Intermittent use can mean a machine sits powered off long enough that a marginal sensor or board only shows its fault when someone finally needs it. I test both under load instead of guessing.

Models we service

Donper product lines.

Slush and soft-serve machines

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

Donper service in neighboring cities.

More cities

Donper across our service area.

FAQ

Donper in Foster City questions, answered.

Do you cover Foster City directly, or is it an add-on to San Mateo?

Foster City is part of the same coverage area as San Mateo, and our Peninsula technician is based right next door in San Mateo County. We don't promise same-day on every call, but this is one of the closer stops we make.
Our machine sits mostly unused during the week. Does that matter?

It does. Machines that sit idle for days dry out seals and gaskets faster than ones running daily, so if yours leaks the first time it gets turned on after a quiet stretch, that is likely why.
What's the process if we need a repair?

The diagnostic runs $99 and gets credited toward the repair. The quote is written down before I start pulling the machine apart.

Need Donper service in Foster City?

Tell us what is broken. We will quote it.