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Eemax

Eemax SPEX80 Electric Tankless Water Heater 277V Single Phase

SKU CH-D5Q5-5ZHPD

Compact electric tankless heater delivers 0.7 to 2 gallons per minute at 277 V single phase for undersink commercial use

  • TypeWater Heaters
  • Instant hot water at 2 gpm flow rate
  • Compact 10.75 × 5.25 × 3 in fits under sinks
  • 277 V single-phase supply needs no transformer
  • Activates at low 0.7 gpm for sensor faucets
  • Delivers 70–140 °F for commercial lavatory use

Undersink Electric Tankless Heater

The Eemax SPEX80 is a new electric tankless water heater built for undersink installation. It runs on 277V AC single-phase power and delivers hot water on demand for commercial indoor use. The unit activates at a minimum flow of 0.7 gpm and can supply up to 2 gpm. It is suited for kitchen sinks, lavatory faucets, metering faucets and sensor faucets.

Replaces Tank Heaters at Point of Use

This model removes the need for a storage tank at the fixture, saving space and cutting standby energy loss. The upgrade makes sense when you need continuous hot water at a single outlet without waiting for recovery. It delivers temperatures between 70 and 140 degrees F using 8,000 W and draws 29 A during operation.

Fits Tight Commercial Spaces

The compact body measures 10.75 in high, 5.25 in wide and 3 in deep, allowing it to tuck under most commercial sinks. It connects via a 3/8 in compression cold inlet suited to standard supply lines. Installation requires a dedicated 277V single-phase circuit and indoor mounting. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

Highlights

  • Instant hot water at 2 gpm flow rate
  • Compact 10.75 × 5.25 × 3 in fits under sinks
  • 277 V single-phase supply needs no transformer
  • Activates at low 0.7 gpm for sensor faucets
  • Delivers 70–140 °F for commercial lavatory use

Specifications

BrandEEMAX
TypeWater Heaters

Questions about this item

What clearance is needed for the 10.75 in height and 5.25 in width of this undersink unit?

The unit measures 10.75 in high, 5.25 in wide and 3 in deep, so allow at least those dimensions beneath the sink for fit and service access.

Which wiring and pipe connections are required for the 277 V single-phase supply and 3/8 in cold inlet?

Connect a dedicated 277 V AC single-phase circuit rated for 29 A and join the cold water line to the 3/8 in compression inlet; the step often missed is verifying the breaker size before powering up.

When should the inlet screen be checked given the 0.7 gpm activation threshold?

Inspect and clean the inlet screen if flow drops near the 0.7 gpm minimum activation, as debris can prevent the heater from firing.

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