Commercial Undercounter Dishwashers

Compact Commercial Dishwashers for Under-Counter Installation

An undercounter dishwasher fits beneath a standard counter or bar top and delivers the same NSF-certified wash and sanitize performance as a full-size door-type machine, in a footprint that fits where larger machines cannot. For bars, cafes, small restaurants, hotel lounges, and any operation where a separate dish room is not practical, an undercounter dishwasher is the most efficient way to keep plates, glasses, and smallwares cycling through service without dedicating significant floor space to warewashing. We offer commercial undercounter dishwashers from Champion, CMA Dishmachines, Jackson, Lamber, and Moyer Diebel, in high-temperature and low-temperature sanitizing configurations with a range of booster heater and drain pump options.

High-Temperature vs. Low-Temperature Sanitizing

High-temperature undercounter dishwashers heat the final rinse water to 180°F to achieve sanitation without chemical additives in the rinse cycle. These are the preferred configuration for most restaurant and bar applications because they produce spot-free results on plates and glassware and eliminate concerns about chemical residue affecting food or beverage flavor. Most high-temperature models require a booster heater to bring incoming water to the required final rinse temperature -- some units include the booster, while others require it as a separate addition, so it is worth confirming booster inclusion before ordering. Low-temperature models sanitize using a chemical injection system rather than heat, which reduces energy consumption, eliminates steam output, and makes them a practical choice for installations where ventilation is limited or where 208/240V electrical service is not available.

Booster Heaters and Drain Pumps

Two of the most consequential options on an undercounter dishwasher are booster heater inclusion and drain pump inclusion. A booster heater raises incoming water temperature to meet the 180°F final rinse requirement for high-temp sanitizing -- without one, the machine relies entirely on the facility's hot water supply, which rarely reaches that temperature consistently. A drain pump allows the machine to discharge waste water to a drain line that is above floor level, which is a common situation in older buildings, bars with slab-mounted plumbing, and installations where a floor sink is not directly accessible. Units without a drain pump rely on gravity drainage to a floor sink directly below or adjacent to the machine. Confirming your drain configuration before selecting a model prevents installation complications.

ADA-Compliant Models

Select undercounter dishwashers are available in ADA-compliant configurations with reduced height to fit beneath accessible counters. These are worth considering for operations designing accessible workspaces or for any installation where counter height is lower than standard.

What to Consider Before You Buy

The primary decisions are sanitizing type, booster heater inclusion, and drain pump inclusion -- all three are determined by your utility connections and plumbing configuration rather than preference. Beyond those, verify that the door opening height accommodates the tallest items you regularly wash, as standard undercounter dishwashers have a fixed rack clearance that may not fit tall pitchers, large plates, or certain glassware without a model specifically designed for greater interior height. For a complete dishwashing setup, explore our full range of commercial dishwashers including door-type and conveyor models, or browse all dishwashing equipment and accessories for racks, chemicals, and related components.

Shop Our Commercial Undercounter Dishwashers Today

Browse the full selection above and filter by brand, sanitizing type, booster heater inclusion, and drain pump to find the right undercounter dishwasher for your operation.