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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/240 110F water heater part

SKU CH-0DXS-M18HH

An undersink electric tankless water heater delivering up to 1 gpm with a 0.2 gpm activation threshold, operating at 240 V AC and 4,800 W

  • Product typeWater Heaters
  • Delivers 160 °F maximum water temperature
  • Activates at just 0.2 gpm minimum flow
  • Compact 6.25 in height fits tight spaces
  • Operates on 240 V single-phase power
  • Draws 20 A at 4,800 W heating power

Undersink Electric Tankless Heater

The Chronomite CM-20L/240 is a compact electric tankless water heater designed for undersink installation in residential or commercial settings. It operates on 240V AC single-phase power and delivers hot water on demand without a storage tank. The unit activates at a minimum flow of .2 gpm and provides a maximum flow rate of 1 gpm.

240V Single-Phase Installation Requirements

This heater requires a 240V AC single-phase supply and draws 20 A at 4,800 W. Cold water connects via a 3/8 in inlet. The unit measures 6.25 in high, 9.63 in wide and 2.75 in deep for indoor mounting. It frees up space compared with tank heaters but needs a dedicated circuit rated for the stated current.

Fixed 110F to 160F Output Range

The thermostat is not adjustable; delivered temperature is factory set between 110 Degrees F and 160 Degrees F. California Proposition 65 warnings apply for chemicals known to cause cancer and reproductive harm. No additional accessories or software are bundled with the heater.

How it compares

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

Price $322.99
Pricier than about 84% of the 85 comparable items (median $163.99).

Specifications

Product
Brand nameCHRONOMITE
Product typeWater Heaters

Questions about this item

What maximum flow rate does the CM-20L/240 support before temperature drops?

The unit delivers up to 1 gpm; above that flow the heater cannot maintain the set outlet temperature.

How much power does the heater draw and what current does it require during continuous operation?

It consumes 4,800 W at 240 V AC single-phase, drawing 20 A steadily while running.

What inlet connection must already be present for the CM-20L/240 to install?

A 3/8 in cold-water supply line is required to connect to the heater's inlet fitting.

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