Premium diagnostics and repair support for luxury homes, commercial kitchens, refrigeration, HVAC systems and property portfolios in San Jose and the Bay Area.
Luxury homes, restaurants, commercial kitchens, HVAC and property portfolios — served by a single technical team.
Sub-Zero, Wolf, Miele, Thermador, Viking and more.
Built-in refrigerators, wine columns and ice makers.
Built-in and plumbed Miele coffee system diagnostics.
Ovens, ranges, fryers, warewashing and prep equipment.
Most repair calls fail when symptoms are treated instead of the system. KONGRA focuses on measurement, diagnostics and confirmed repair scope — so parts are replaced based on evidence, not guesswork.
What the equipment is actually doing — reported and observed.
Which subsystem, circuit or loop the symptom belongs to.
Instrument readings — electrical, pressure, temperature, error data.
Root cause confirmed against measurement, not assumed.
Written estimate. Parts ordered against a confirmed fault.
Independent service. Manufacturer names describe equipment serviced only.
KONGRA LLC is an independent service company. Manufacturer names are used only to describe equipment serviced. KONGRA is not affiliated with or endorsed by these manufacturers unless explicitly stated.
Front-of-house to back-of-house — cooking, refrigeration, warewashing, prep and light production. Written estimates before any repair begins.
The engine room of every restaurant — combustion, calibration and airflow.
Combi & convection ovens, ranges, fryers, griddles, salamanders and steamers. We diagnose ignition, thermostat, gas valve, blower and control-board issues with proper instruments.
Cold chain integrity — temperature, defrost cycles and airflow under control.
Walk-in coolers and freezers, reach-ins, prep tables, ice machines and merchandisers. Refrigerant, evaporator, condenser, defrost and temperature-alarm diagnostics.
Precision under load — motors, gearboxes and drive systems built for production.
Spiral mixers, dough sheeters, proofers, rack ovens and slicers. Belt tension, gear noise, safety interlocks, roller-gap and motor overheating diagnosed on-site.
Water, chemistry and heat — cycles that keep service moving.
Undercounter, door-type and conveyor dishwashers, glasswashers and booster heaters. Wash and rinse pumps, fill and drain valves, float switches and chemical dosing.
Prep-line reliability — planetary mixers, slicers and grinders under daily volume.
Planetary mixers, slicers, food processors, meat grinders and prep equipment. Gearbox, bowl-lift, blade drive and safety-switch diagnostics for continuous production.
Schedule service online in a few clicks.
On-site inspection with proper instruments and service data.
Clear repair options based on the actual issue.
Special-order commercial or high-end parts may require a deposit.
Repair is performed according to the confirmed scope.
Pay on completion. Repair-specific warranty in writing.
Typical diagnostic situations KONGRA handles. Final diagnosis and repair scope are confirmed only after inspection.
Examples only — not completed repair claims.
KONGRA operates as a documented, insured vendor for property managers, hotels and multifamily operators across the Bay Area — one point of contact for high-end appliances, commercial equipment, HVAC and refrigeration.
Predictable process, documentation and written estimates. Open a work order online or reach us directly.
Yes. Diagnostic is a paid on-site visit that includes inspection with proper instruments and service data.
Yes. After diagnostic you receive a clear estimate or quote before any repair begins.
Yes. Sub-Zero, Wolf, Miele, Thermador, Viking, Gaggenau, Fisher & Paykel, Bosch, GE Monogram, JennAir, Dacor and similar.
Yes. Work orders, tenant coordination, photo documentation, written estimates, invoices, W9 and COI available on request.
Yes. Commercial cooking, refrigeration, warewashing, prep and light production equipment.
Yes. Walk-ins, reach-ins, prep tables, ice machines, evaporators and condensers.
Yes. Planetary and spiral mixers, sheeters, proofers, rack ovens and related equipment.
Special-order commercial and high-end parts may require a deposit before ordering.
Yes. Invoices are provided on completion. W9 and COI are available on request.
No. KONGRA LLC is an independent service company. Manufacturer names are used only to describe equipment serviced.
San Jose & Bay Area · Commercial & Property Friendly