COMMERCIAL DISHWASHER NOT HEATING

Commercial Dishwasher Not Heating Booster heaters, elements, and low rinse temperature

A high-temp dish machine that won't reach sanitizing temperature is a health-inspection problem, not just an annoyance. Here's what usually causes it.

  • 4.5★ · 990+
  • 1-Yr Warranty
  • OEM Parts
  • Same-Day
(651) 364-7466
$199Trip feeWaived on repair
See brands we service

Reviewed by Mike Larson, Master Appliance Technician · 18+ yrs in-field · Last reviewed

  • Same-day priority

    Commercial dispatch first.

  • EPA 608 certified

    Sealed-system work in-house.

  • OEM parts on truck

    True, Hoshizaki, Manitowoc, Hobart.

  • 1-yr written warranty

    Parts & labor in writing.

$199 trip charge — waived with any repair. Approve the work on the same visit and the trip charge comes off the invoice. If you decline, you pay only the $199 and we leave a written scope. Every completed repair carries a 1-year written parts-and-labor warranty.

Quick answer

Commercial Dishwasher Not Heating

A commercial dishwasher that won't heat is usually caused by a failed or scaled booster heater element, a bad thermostat or high-limit switch, a tripped breaker or contactor, or low incoming water temperature. High-temp machines need a final rinse of about 180°F. Typical repairs are estimated at $325–$985, quoted in writing first. $199 commercial trip fee waived with the repair, same-day priority and after-hours emergency service.

Key facts

Commercial Dishwasher Heating Repair — Twin Cities: at a glance

Key facts for Commercial Dishwasher Heating Repair — Twin Cities
ServiceCommercial Dishwasher Heating Repair — Twin Cities
Common repairsBooster heater element; Thermostat and high-limit; Wash tank heater; Contactors and wiring; Descaling
Typical repair costBooster heater element: Est. $385–$885 · Thermostat and high-limit: Est. $285–$585 · Wash tank heater: Est. $385–$885 · Contactors and wiring: Est. $285–$685 · Descaling: Est. $285–$585 (written quote before work)
Trip fee$199 commercial trip fee, waived when you approve the repair
Warranty1-year written parts-and-labor warranty
CredentialsFactory-trained technicians; EPA 608 certified for refrigerant work
AvailabilitySame-day priority, plus after-hours and weekend emergency service
BrandsHobart, Jackson, Champion, CMA, Insinger, Meiko
Phone(651) 364-7466

Services covered

What we repair

Booster heater element

Scaled or burned elements that can't bring rinse water to sanitizing temperature.

Typical all-in: Est. $385–$885

Thermostat and high-limit

Failed thermostats, probes and high-limit switches that cut the heat.

Typical all-in: Est. $285–$585

Wash tank heater

Tank heater elements and low-water safeties that keep the wash tank cold.

Typical all-in: Est. $385–$885

Contactors and wiring

Burned contactors, loose terminals and tripped breakers on the heater circuit.

Typical all-in: Est. $285–$685

Descaling

Booster and tank descale for Twin Cities hard water to protect elements.

Typical all-in: Est. $285–$585

Repair vs. replace

Why commercial repair pays back fast

Same-day priority, after-hours emergency

Commercial calls get priority dispatch, with night and weekend emergency service across the Twin Cities.

Written quote before work

You get the diagnosis and price first. The $199 commercial trip fee is waived when you approve the repair.

Factory-trained, EPA 608 certified

Factory-trained technicians, EPA 608 certified for refrigeration work, with a 1-year parts-and-labor warranty.

Maintenance contracts available

Written preventive maintenance contracts to catch problems before they shut down service.

Brands serviced

OEM coverage

  • Hobart
  • Jackson
  • Champion
  • CMA
  • Insinger
  • Meiko

If your equipment is down right now

What to do first: commercial dishwasher not heating

  1. 1. Read the temperature gauges

    Note wash and rinse temperatures shown on the machine.

  2. 2. Check the breaker

    See if the booster heater breaker has tripped. Reset it once only.

  3. 3. Switch to backup sanitizing

    Use your approved backup sanitizing method until the machine is fixed.

  4. 4. Call for service

    Call (651) 364-7466 with the brand, model and temperatures.

FAQs

Common questions from operators

Why isn't my dish machine getting to 180°F?

Usually a scaled or burned booster heater element, a failed thermostat, or low incoming water temperature.

What temperature should a commercial dishwasher rinse at?

High-temp machines typically need a final rinse around 180°F. Low-temp machines sanitize with chemicals instead. Follow the data plate on your machine.

Can hard water cause my dishwasher to stop heating?

Yes. Scale insulates elements so they overheat and burn out. Regular descaling helps them last longer.

How much does it cost to fix a dishwasher that isn't heating?

Most repairs are estimated at $325–$985. You get a written quote first, and the $199 trip fee is waived with the repair.

Do you carry Certificates of Insurance for property managers, hotels, and hospitals?

Yes. We issue COIs naming your property manager, hospitality group, hospital facilities office, or municipal account as additional-insured at no charge — typically the same business day. General liability and workers' comp are in force year-round; we can raise limits per contract on request.

What payment terms do you offer commercial accounts?

First visit is card-on-file or COD. Once an account is established, we invoice Net-15 or Net-30 with itemized statements aligned to your accounting cycle. We accept POs from restaurant groups, hotel brands, property management firms, school districts, and city and county accounts. ACH and card payments both fine.

Do you offer preventive maintenance contracts?

Yes — quarterly, semi-annual, and annual PM plans tiered by equipment count and equipment class. Every visit includes condenser cleaning, drain flushing, gasket and hinge inspection, electrical-tightness verification, controller and setpoint check, and a written report you can hand to insurers, health inspectors, or franchisors.

What refrigerants and fuel systems are your techs certified on?

Every technician holds EPA Section 608 Universal certification covering R-404A, R-448A / R-449A (Solstice N40, Opteon XP40), R-290 hydrocarbon systems where code permits, and legacy R-22. Cooking-equipment techs are gas-certified for natural gas and LP on ranges, fryers, ovens, and combi-ovens.

Do you handle downtown high-rise, hotel, hospital, and event-venue access?

Yes. We coordinate dock and freight-elevator windows in advance, badge in through hotel or hospital engineering, and work around banquet, service-window, and clinical-department timing. Overnight and pre-open service is available when a daytime window won't work.

Are weekend, holiday, and after-hours calls available?

Yes — after-hours, weekend, and holiday emergency dispatch is available for refrigeration, ice, and warewashing failures across the Twin Cities metro. A published after-hours premium applies and is confirmed in writing before the tech leaves the shop.

What warranty comes on commercial repairs?

A 1-year written parts-and-labor warranty on every commercial repair — the same failure mode, on the same unit, within 12 months is covered at no additional charge. Some sealed-system components carry an extended manufacturer warranty on top; those terms are itemized on the invoice.

Do you work on food trucks, ghost kitchens, and mobile catering rigs?

Yes. Truck-mounted reach-ins, undercounter units, generator-fed ice machines, and mobile prep tables are all serviceable — we typically shop-visit at your commissary or overnight parking rather than roadside so the unit can stabilize before diagnosis.

Can you provide written estimates and health-inspector documentation?

Yes. Written estimates are issued before any sealed-system, compressor, or major-component work. On request we provide inspector-ready documentation: repair scope, part numbers, refrigerant type and charge, and the date service restored the unit to spec.

Which Twin Cities cities and ZIP codes do you cover for commercial service?

Full Twin Cities metro — Minneapolis (55401–55488), Saint Paul (55101–55155), Bloomington, Edina, Eden Prairie, Maple Grove, Woodbury, Eagan, Plymouth, Minnetonka, Roseville, Burnsville, and the surrounding suburbs — plus Hudson, WI 54016 and Western Wisconsin. Commercial dispatch runs a daily route across the metro.

Who we serve

Twin Cities operators we dispatch to daily

Commercial Dishwasher Heating Repair — Twin Cities covers foodservice, hospitality, healthcare, retail, and institutional accounts across the Twin Cities metro. Multi-location operators get one dispatcher, one COI on file, and Net-15 / Net-30 invoicing.

  • Restaurants
  • Bars & taprooms
  • Breweries
  • Hotels & hospitality
  • Hospitals & clinics
  • Schools & universities
  • Grocery & c-stores
  • Delis & bakeries
  • Cafeterias
  • Assisted living
  • Ghost kitchens
  • Food trucks & commissaries
  • Convenience stores
  • Country clubs
  • Event venues & catering
  • Churches & non-profits

Service area

Cities we cover for commercial service

Daily route across Minneapolis, Saint Paul, and the surrounding metro. ZIP coverage: 55401–55488 (Minneapolis), 55101–55155 (Saint Paul), 55420–55439 (Bloomington/Edina), 55304–55449 (north metro), 55044–55124 (Lakeville/Apple Valley/Eagan), 55125–55129 (Woodbury), and 54016 (Hudson, WI).