Paid diagnostic · Estimate after inspection
K
KONGRA
San Jose & Bay Area

High-End Appliance, Commercial Equipment & Refrigeration Repair in San Jose & Bay Area

Independent diagnostics and repair for homeowners, restaurants and property managers in Los Gatos, San Jose and the Bay Area. High-end appliances, commercial kitchen equipment and refrigeration come first; selected industrial and automation diagnostics are available after scope review. Paid diagnostic, written estimate after inspection.

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Engineering-level
Diagnostics
Commercial & luxury
Equipment
W9 & COI
On request
Illustrative image: Luxury kitchen with integrated built-in refrigerator, wine column and premium range
On-site
Diagnostic with service data
Five Directions
Illustrative image: Luxury residential kitchen with integrated refrigeration, wine storage and a premium range
Direction 01 · Residential
01Direction

Residential High-End Systems

Luxury homes · High-end appliances · Built-in systems

Engineering-level diagnostics and repair across San Jose and the Bay Area — Sub-Zero built-in and integrated column refrigeration, Wolf ranges, rangetops and ovens, Thermador cooking, dishwashing and built-in refrigeration, plus wine storage and coffee systems.

Brands / systems
Common problem scenarios
  • Built-in refrigerator not cooling
  • Freezer temperature alarm
  • Wine cooler not holding temperature
  • Ice maker not producing ice
Explore High-end appliance repair
Illustrative image: Premium commercial kitchen with stainless-steel ovens, cooking ranges and ventilation
Direction 02 · Commercial Foodservice
02Direction

Commercial Foodservice & Commercial Equipment

Restaurants · Hotels · Commissaries · Commercial kitchens

Refrigeration and ice machines, warewashing, food prep, cooking and holding, bakery and dough equipment. Diagnosed with proper instruments and confirmed against manufacturer service data.

Brands / systems
Common problem scenarios
  • Commercial refrigerator not holding temperature
  • Commercial dishwasher not draining
  • Fryer temperature not stable
  • Spiral mixer trips breaker
Explore Commercial kitchen equipment
Plan equipment maintenance
Illustrative image: Premium commercial refrigeration and HVAC diagnostic environment with cool-blue lighting
Direction 03 · Refrigeration & HVAC
03Direction

Refrigeration & HVAC Systems

Cold chain · Comfort systems · Mechanical diagnostics

Commercial refrigeration and HVAC diagnostics — walk-ins, reach-ins, ice machines, condensers, heat pumps, rooftop units, controls. Refrigerant work performed only within KONGRA's legal license scope.

Brands / systems
  • True
  • Traulsen
  • Hoshizaki
  • Scotsman
  • Manitowoc
  • Beverage-Air
Common problem scenarios
  • Walk-in cooler temperature alarm
  • Walk-in freezer icing up
  • Reach-in refrigerator not cooling
  • Prep table temperature too high
Explore HVAC / Refrigeration diagnostics
Direction 04 · Property / Facilities

Property, Facilities & Portfolio Vendor

Multi-unit · Portfolio vendor · Hotels · Facilities

KONGRA operates as a documented, insured vendor for property managers, multi-unit portfolios, hotels, estate managers, commercial landlords and restaurant operators across the Bay Area.

Segments
  • Property managers
  • Multi-unit portfolios
  • Hotels
  • Restaurant operators
Common problem scenarios
  • Tenant reports refrigerator not cooling
  • Luxury range issue before move-in
  • Hotel ice machine low production
  • Apartment HVAC not cooling
  • Work orders and tenant coordination
  • Written estimates before repair
  • Photo documentation when appropriate
  • Invoices, W9 and COI on request
Explore Property management vendor
Illustrative image: Luxury multi-unit apartment building at twilight — property portfolio maintenance
Portfolio-friendly

One reliable vendor for your portfolio

Predictable process, documentation and written estimates. Start with the vendor or work-order process.

Vendor overview Work order process Hotel maintenance
Direction 05 · Light Production Diagnostics

Light Production Equipment Diagnostics & Troubleshooting Support

CNC · Conveyors · Packaging · Sensors · Drives · Selected Automation Issues

Diagnostic-first troubleshooting support for selected light production equipment, conveyors, packaging systems, sensors, drives, control-related faults and machinery issues within KONGRA’s legal and practical service scope.

Subcategories
  • CNC / Machine Tool Troubleshooting
  • Conveyors & Material Handling
  • Packaging / Sealing Equipment
  • Sensors / Vision / Drives
Brands / systems
  • Haas
  • Mazak
  • Okuma
  • DMG MORI
  • Doosan / DN Solutions
  • Hurco
Common problem scenarios
  • CNC machine servo alarm
  • Spindle or tool changer issue
  • Axis not homing
  • Coolant pump issue

Diagnostics and repair support within KONGRA's legal license, insurance and practical scope. Robotics, automation, CNC, PLC and regulated industrial work may require a certified integrator or properly licensed specialist.

Industrial equipment diagnostics Contracts & procurement
Illustrative image: Modern production line with conveyor, control cabinet and automation equipment
Direction 05
Browse

Explore services & diagnostic scenarios

Why KONGRA

Diagnostic-first repair, not parts guessing.

KONGRA works from measurement, diagnostics and a confirmed repair scope — so parts are replaced based on evidence from the equipment itself.

  • Diagnose properly before replacing parts
  • Repair scope confirmed after inspection
  • Instruments and service data on every visit
  • Written estimate before any repair begins
Process

How it works

  1. 01
    Step 01
    Book Online

    Schedule service online in a few clicks.

  2. 02
    Step 02
    Paid Diagnostic

    On-site inspection with proper instruments and service data.

  3. 03
    Step 03
    Estimate / Quote

    Clear repair options based on the actual issue.

  4. 04
    Step 04
    Parts Deposit if Needed

    Special-order commercial or high-end parts may require a deposit.

  5. 05
    Step 05
    Repair

    Repair is performed according to the confirmed scope.

  6. 06
    Step 06
    Invoice & Warranty

    Pay on completion. Repair-specific warranty in writing.

Reviews

Read what Bay Area customers say

Independent public profiles — read reviews before you book.

Google Business Profile Yelp Profile
FAQ

Frequently asked questions

Is the diagnostic visit paid?+

Yes. Diagnostic is a paid on-site visit that includes inspection with proper instruments and service data.

Do you provide estimates before repair?+

Yes. After diagnostic you receive a clear estimate or quote before any repair begins.

Do you work on high-end appliances?+

Yes. Sub-Zero, Wolf, Miele, Thermador, Viking, Gaggenau, Fisher & Paykel, Bosch, GE Monogram, JennAir, Dacor and similar.

Do you work with property managers?+

Yes. Work orders, tenant coordination, photo documentation when appropriate, written estimates, invoices, W9 and COI available on request.

Ready when you are

Book service, or reach us directly.

San Jose & Bay Area · Residential · Commercial · Property · Automation

High-End Appliances·Commercial Kitchen·Commercial Refrigeration·HVAC / Refrigeration·Property Vendor·Light Production Diagnostics·About KONGRA·Privacy Policy·Service Terms
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