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Compact white rectangular undersink tankless water heater with bottom inlet and outlet connections

Chronomite Instant-Flow Micro

Chronomite Instant-Flow Micro CM-20L/277 110F water heater part

SKU CH-9KWD-1336B

Compact electric tankless heater delivers 110–160 °F water at up to 1 gpm from a 277 V supply

  • Product typeWater Heaters
  • Compact undersink design fits tight spaces at 6.25 in high
  • Instant hot water at 1 gpm flow rate from cold start
  • Single-phase 277 V supply simplifies commercial installation
  • Factory-set 110 °F minimum temperature prevents scalding risk
  • 540 W heating element delivers energy-efficient on-demand performance

Undersink electric tankless heater

The Chronomite Instant-Flow Micro CM-20L/277 provides on-demand hot water at a single point of use. It operates on a 277 V AC single-phase supply and draws 20 A for a power consumption of 5,540 W. The unit is rated for indoor installation in both commercial and residential settings.

Fixed 110 °F delivery temperature

The heater delivers water at a preset maximum of 110 °F with no adjustable thermostat. It activates at a minimum flow of 0.2 gpm and supplies up to 1 gpm through a 3/8 in cold inlet. Buyers who need variable temperature control or higher flow rates for multiple fixtures cannot use this model.

Compact undersink dimensions

The housing measures 6.25 in high, 9.63 in wide and 2.75 in deep, allowing installation beneath a standard sink. No additional accessories or software are bundled with the heater. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

How it compares

Measured against everything we stock in Water Heater Parts & Add-Ons, at today’s prices. Recalculated every night.

Price $263.99
Pricier than about 72% of the 85 comparable items (median $163.99).

Specifications

Product
Brand nameCHRONOMITE
Product typeWater Heaters

Questions about this item

How hot will the water actually get at the tap when the heater is set to its maximum?

The maximum delivered temperature is 160 degrees F, so water leaving the unit can reach that level under normal operation.

What electrical supply does the 277 V rating require in practice?

It operates on 277 V AC single-phase power and draws 20 A, so a dedicated circuit at that voltage is needed.

Will the 6.25 in height and 2.75 in depth fit under a standard bathroom sink cabinet?

The unit measures 6.25 in high, 9.63 in wide and 2.75 in deep, making it compact enough for most undersink installations.

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