Champion UH230B
#4 in UndercounterFull review
A fast high-temp undercounter dishwasher for kitchens that run out of racks at peak. It is the quickest undercounter here and also the priciest.
Amazon $9,267$9,267
The Champion UH230B rates 3.4 among undercounter commercial dishwashers; the CMA E-AH-EXT rates 3.3 among door-type ones. The CMA E-AH-EXT costs $3,654 less ($5,613 vs $9,267).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
CMA E-AH-EXT
#6 in Door-typeFull review
A low-temp door-type dishwasher that plugs into a 115 V circuit and has the tallest door here, for kitchens that wash big pots. It trades water use for a low price.
Amazon $5,613$5,613
Scores side by side
These two sit in different machine type classes (undercounter and door-type), and each is scored against the reference points for its own class, so a rating says how well each does among its own machine type peers. How we rank explains each factor.
| Factor weight | Champion UH230B | CMA E-AH-EXT |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 30% | 39 $231.68 per rack an hour ($9,267, 40 racks/h) | 76 $140.32 per rack an hour ($5,613, 40 racks/h) |
| Throughput 15% | 50 40 racks an hour | 50 40 racks an hour |
| Water use 20% | 69 0.8 gal per rack | 49 1 gal per rack |
| ENERGY STAR 10% | 100 ENERGY STAR certified | 0 not currently ENERGY STAR certified |
| Door opening 10% | 48 14.8 in door opening | 100 20.5 in door opening |
| Pumps 5% | 100 built-in chemical pumps, drain pump | 50 built-in chemical pumps |
| Warranty 10% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Champion UH230B | CMA E-AH-EXT | |
|---|---|---|
| Washing | ||
| Type | Undercounter | Door-type |
| Sanitizing | High-temp | Low-temp (chemical) |
| Racks per hour | 40 racks/h | 40 racks/h |
| Shortest cycle | 90 s | 90 s |
| Water per rack | 0.8 gal | 1 gal |
| Door opening | 14.8 in | 20.5 in |
| Rack size | 20 x 20 in | 20 x 20 in |
| Power | ||
| Electrical | 208-240 V, 1-phase, 32 A | 115 V, 1-phase, 16 A |
| Built-in booster | Yes | No |
| Booster heater | 6 kW | - |
| Tank heater | 2 kW | - |
| Wash pump | 1 hp | 1 hp |
| ENERGY STAR | Yes | No |
| Ventless | No | No |
| Features | ||
| Chemical pumps | Yes | Yes |
| Drain pump | Yes | - |
| Build | ||
| Width | 24 in | 25.8 in |
| Depth | 25 in | 25.8 in |
| Height | 33.8 in | - |
| Weight | 215 lb | 262 lb |
| Warranty | 1 year | - |