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Chronomite C-Micro 0.2 GPM Instant-Low-Flow Activation CM Water Heater

Original price $299.00 - Original price $299.00
Original price
$299.00 - $299.00
Current price $299.00


  • Unlimited hot water in two (2) seconds
    • Field Adjustable Temperature from 104°F to 125°F (40°C to 52°C)
    • 99% energy efficient and budget-saving
    • Low-cost, hassle-free installation and maintenance
    • A space saver. Compact size at the point of use
    • Factory preset temperature: promotes healthy handwashing without scalding risks
    • Safe, clean, on-demand hot water eliminates the need for storage tanks, which may promote the bacteria growth and proliferation


    The Instant-Flow C-Micro has an ultra-low-flow activation rate of 0.2 GPM (0.75 LPM) plus adjustable output temperature limits.

    The Instant Flow C-Micro uses digital microprocessor technology and features a user-adjustable output temperature limit. Note this limit is a maximum output temperatures, not minimum and not guaranteed. Your actual output temperature will depend on your incoming water temperature and output flow rate. The heater ships with a preset temperature of 104°F.

    This instant hot water heater responds to fluctuations in incoming water pressure, temperature and flow rate regulating water temperature more than a hundred times per second. This prevents scalding issues and mixing valves won't be necessary. It offers the same easy installation, unlimited hot water, compact design, and 50% more energy efficiency than other instant water heaters that have no microprocessors. The Instant-Flow Micro Inline Water Heater is great for sinks, bathrooms, and many other applications.


    • Unlimited hot water in two (2) seconds
    • Field Adjustable Temperature from 104°F to 125°F (40°C to 52°C)
    • 99% energy efficient and budget-saving
    • Low-cost, hassle-free installation and maintenance
    • A space saver. Compact size at point of use
    • Factory preset temperature: promotes healthy hand washing without scalding risks
    • Safe, clean, on-demand hot water eliminates the need for storage tanks, which may promote the bacteria growth and proliferation
    • Certified Lead-Free. Water is safer for drinking.
    • Self-cleaning feature prevents calcification buildup
    • USA-made
    • UL Listed
    • ADA-compliant
    • Meets applicable building codes including ADA, UL, IAPMO, UPC, CSA.
    • Meets all CAL GREEN low flow requirements
    • Meets LEED v4 low flow requirements (less than 0.4 GPM and 1.5 LPM)
    • Lead-Free according to Federal Public Law 111-380
    • Full 1-Year Warranty
    Made in America

    Instant-Flow C-Micro Models


    °F Temp
    Rise at
    0.35 GPM

    °F Temp
    Rise at
    0.5 GPM

    °F Temp
    Rise at
    1.0 GPM

    °F Temp
    Rise at
    1.5 GPM




    90° C

    CM-12L/120 28 20 - - 120 1440 12 14
    CM-12L/208 49 34 - - 208 2500 12 14
    CM-12L/240 56 39 20 - 240 2880 12 14
    CM-12L/277 65 45 23 - 277 3320 12 14
    CM-15L/120 35 25 - - 120 1800 15 14
    CM-15L/208 61 43 21 - 208 3120 15 14
    CM-15L/240 70 49 25 - 240 3600 15 14
    CM-15L/277 81 57 28 - 277 4150 15 14
    CM-20L/120 47 33 - - 120 2400 20 12
    CM-20L/208 81 57 28 - 208 4160 20 12
    CM-20L/240 90+ 66 33 22 240 4800 20 12
    CM-20L/277 90+ 76 38 25 277 5540 20 12
    CM-30L/120 70 49 25 16 120 3600 30 10
    CM-30L/208 90+ 85 43 28 240 6240 30 10
    CM-30L/240 90+ 90+ 49 33 240 7200 30 10
    CM-30L/277 90+ 90+ 57 38 277 8320 30 10
    CM-40L/208 90+ 90+ 57 38 208 8320 40 8
    CM-40L/240 90+ 90+ 66 44 240 9600 40 8
    CM-40L/277 90+ 90+ 76 50 277 11,080 40 8

    • The microprocessor in the Instant-Flow C-Micro adjusts its power usage according to the flow rate, incoming water temperature and pressure to provide the factory preset water temperature.
    • 240V is used for calculations for 240V models. Operation at 220V will result in a 15% wattage and heating decrease.

    Technical Specifications

    Dimensions: 6.25" x 9.675" x 2.75"
    Weight: 4 lbs.
    Materials: Rugged cast aluminum housing. Celcon plastic element assembly with nichrome coils
    Housing Color: White
    Minimum heated water flow rate: 0.20 GPM (0.75 liters per minute)
    Minimum Water Pressure: 25 PSI
    Maximum Operating Water Pressure: 80 PSI
    Maximum Water Pressure 150 PSI
    Maximum Water Temperature: 160°F
    Maximum Ambient Operating Temperature: 140°F
    Certifications: UL, IAPMO, UPC, ADA

    Digital Microprocessor Technology

    • Immediate response to changes in incoming water pressures, temperatures and flow rate
    • No more scalding concerns with factory preset temperatures
    • Regulates water temp 120 times per second
    • Up to 50% more energy efficient than non-microprocessor water heaters
    • Eliminates mixing valves

    Chronomite Instant-Flow Micro Water Heating

    Optional Stainless Steel Housing

    Corrosion Resistant
    Chromium provides for an invisible film that resists oxidation, thus making the material resist corrosion or "passive".

    Stainless steel, having a non-porous surface, practically eliminates bacteria growth and other harmful micro-organisms. Easy to clean, which is why it is the first choice in laboratories, hospitals as well as food processing.

    Aesthetically Pleasing
    Stainless steel has a modern and attractive appeal, is bright, and has an easily maintained surface.

    Chronomite Instant-Flow Micro Water Heating
    Chronomite Instant-Flow Micro Water Heating Optional finishes
    • High Polish
    • Satin


    Installation Instructions & Operation Manual, C-Micro Low Flow
    Spec Sheet & Submittal Sheet, Instant Flow C-Micro
    Chronomite C-Micro Product Line Brochure

    Use the Instant-Flow Micro Tankless Water Heater in these applications

    Preschools -- Instant, unlimited hot water is very helpful for daycares and preschools. Thermostatically-controlled or Factory-preset models prevent scalding and reduce the spread of bacteria and viruses. Heaters are IAPMO certified to meet the same lead-free mandates as schools, which ensures the safest water possible for children.

    Restaurants -- The benefits of Chronomite tankless water heaters are valued in health, food service, and safety environments, among several others.

    Pet salons and beauty salons -- Faucets in individual hair-washing sinks can be preset for a consistent temperature that is comfortable and safe for customers. This feature cuts down on time wasted waiting for the water to heat up.

    Spa showers and pools -- Instant hot water at perfect temperature is ideal for visitors. Because water is only heated on demand, this unit saves energy by being non-operational when not in use.

    Coffee Shops -- Espresso machines can use the preset or thermostatic control feature to keep water at a consistent temperature for beverages. Its compact size makes it ideal for small spaces. Lead-free certification means water is safe to drink.

    Lower utility costs for low income housing -- Chronomite tankless water heaters are 99% more energy efficient than standard tank heaters because they only use energy when hot water is streaming through the plumbing. This dramatically reduces hot water delivery time and saves electricity. In warm climates where only a small temperature rise is needed, hot showers are cheaper than ever.

    Guest Houses, Luxury Suites, and Kiosks -- Chronomite's space-saving tankless water heater design is easy to conceal anywhere it is needed--perfect for small sinks, dishwashers, wet bars, and other places where space efficiency and aesthetics are important. Remote hot water is even possible for mobile carts in stadiums, amusement parks, and recreation areas.

    Emergency safety equipment -- In times of fire, chemical or health risk, water is delivered instantly and at a safe temperature. Drench showers, eye washes, and hoses benefit from a preset temperature and a two-second delivery time. Additionally, the element assembly of a Chronomite heater uses the flow-through abrasive action of water to create a self-cleaning feature that prevents calcification and alkali buildup. These units perform the first time, every single time.

    Mop cleaning areas -- Instant hot water delivered conveniently in two (2) seconds, at a temperature that is preset for proper cleaning.

    Chronomite Instant-Flow Micro Water Heating

    Installs in 15 minutes.

    10 easy steps to installing your Chronomite

    Remember that proper installation and maintenance of your instant water heater can optimize its energy efficiency and lifespan.

    1. Before starting the installation, turn off the breaker and disconnect the electrical supply to the area. Shut off water supply to the fixture. Double-check that everything has been turned off before proceeding.
    2. Access electrical connections in the unit by unscrewing and removing the front face plate. Keep screw in a safe place.
    3. Mount the unit in preferred location using heavy-duty metal screws, make sure to pull existing electrical wires through supplied hole at the back of the unit. Each of its corner has a mounting bracket.
    4. Connect electrical supply wires to the electrical connections from the unit. Make sure to securely tighten all connections.
    5. Close the front face-plate. Screw securely to close.
    6. Connect the Cold Water supply line from the water source to the bottom Cold/Hot inlet compression fitting opening on the unit. Chronomite Tankless Water Heaters require only one cold water intake. No need for excess lines.
    7. Connect the Hot Water supply line from the top Cold/Hot inlet compression fitting opening on the unit to the sink.
    8. Reopen water supply line to the unit. Turn on sink for 2 to 3 minutes to purge air from the lines (Note: water will not run at temperature until the breaker is turned back on in step #10).
    9. Screw the Flow Control Valve (supplied) onto the faucet/fixture head. An included adapter may be used for an exact fit (each box includes all necessary adapters).
    10. Once air is purged, turn on your breaker. Enjoy your new Chronomite Tankless Electric Water Heater at temperature.
    Chronomite Instant-Flow Micro Water Heating

    Frequently Asked Questions ("FAQ")

    What is the difference between the Chronomite SR series, M Series, and CM series?
    The SR series does not automatically adjust (modulate) the output temperature according to changes in flow rate and incoming water temperature. It has one temperature increase amount at a given flow rate, as shown in the specifications. With the M and CM series, the output temperature is modulated to be no more than the factory temperature output setting as indicated in the description and model number after the slash. Please note that this setting is the maximum NOT the MINIMUM output temperature. The CM series has a lower heating turn-on/activation flow rate of 0.2 GPM.

    Is it possible to install the Chronomite heater in a vertical position?
    Chronomite Tankless Water Heaters are built for horizontal installation. When properly installed, the heater will have the inlet and outlet on the right side of the unit when you are facing it. Installing vertically will risk a burn out of the heating coils and the heater will not be covered by warranty. Please refer to the Installation and Operation sheet for the water heater model you are installing.

    I want to plug my Chronomite water heater into a wall outlet. Where is the plug?
    Chronomite Tankless Water Heaters are UL listed. This means that the heater is required to be "hardwired" to a dedicated breaker. To gain optimum performance and keep the product under warranty, it must be installed in this manner. Please refer to the Installation and Operation sheet for the water heater model you are installing.

    How do I decrease or increase the water temperature flowing out?
    Order the unit with the Field/user adjustable temp. knob option in the menu next to the price.

    The hot water maximum flow rate is significantly reduced from my M40L/240. The cold water at the sink has good pressure and flow, but hot water seems like about half that. All of my valves are wide open. Does the M40L have an internal flow restriction?
    None of the Chronomite heaters (including the low-flow models indicated by an "L" in the model number) have any internal flow restriction. But the SR and M series models have 3/8" water connections, while most household water supply pipes are 3/4" (twice the size and flow rate). (1/2 inch NPT fittings optional.)

    May I install my Chronomite tankless water heater outside?
    Chronomite Tankless Water Heaters must not be exposed to freezing temperatures. For outdoor installation, it is recommended that the heater be installed in an enclosure to prevent exposure to the elements. The heater should also be winterized like any other outdoor product that uses water.

    Why is my heater tripping the breaker?
    Confirm first that the heater has been hardwired to a non-GFI, dedicated breaker. Then check that the breaker size is appropriate for the heater being installed (Example: If it is a 30-amp water heater, a 30-amp breaker is necessary). Please refer to the Installation and Operation sheet for the water heater model you are installing.

    Can I install my Chronomite Tankless heater in the ceiling?
    Chronomite Tankless Water Heaters are built for point-of-use applications. For optimum use and performance, they should be installed within 18" from the point of use. Please refer to the Installation and Operation sheet for the water heater model you are installing.

    Will a Chronomite Tankless water heater supply my whole house?
    Chronomite Tankless Water Heaters are built for a point-of-use application. They are not built to provide hot water to a whole house.

    What voltage is my heater and is it okay if it doesn’t match?
    Chronomite Tankless Water Heaters are volt specific. For optimum performance and use, as well as to maintain warranty, the heater must be wired for the correct voltage. The voltage can be found on the label that is adhered to the unit's front.

    What phase are your heaters?
    The Chronomite C-Micro Tankless Water Heaters are single phase.

    What size copper or flex tubing do I use?
    3/8" OD according to the installation instructions. The heater can be fitted with optional 1/2" NPT connections. Order in the menu next to the price.

    Are compression fittings supplied with the heater?
    Two (2) compression fittings are supplied. They are 3/8" x 1/4" NPT. Optional 1/2" NPT connections are available upon request.

    What is the maximum operating temperature?
    It is 140°F in compliance with the Underwriter’s Laboratories listing.

    Do I need the electricity applied to the heater to know if the heater will turn on?
    Chronomite Tankless water heaters are pressure and flow activated. The flow switch makes a faint click sound when the faucet is turned on, with or without electricity.

    Are Chronomite heaters ASSE 1070 certified?
    ASSE 1070 is a mixing valve code pertaining to water temperature limiting devices. It is designed to limit incoming ultra-high hot water supply temperature (120°F - 180°F) to normal, tempered water temperatures (105°F - 110°F), to minimize scalding risk to the end user. Instantaneous water heaters cannot undergo certifications nor testing to this standard, since Chronomite heaters are built to heat incoming cold, ambient supply water only. As stated by American Society of Sanitary Engineering (ASSE) on their official letterhead, the ASSE standard is for water temperature limiting devices, and the various test procedures of this standard requires that the device must have a hot water inlet, a cold water inlet and a mixed water outlet. This standard is therefore not applicable to instantaneous electric water heaters and as such cannot be subjected to ASSE 1070 tests. We have a letter from both IAPMO and ASSE stating these facts on their respective letterheads. Chronomite has a list of manufactures that are certified for ASSE 1070; the good news is, not a single water heater company is on the list. Of course, the Instant-Temp models and Instant-Flow Micro utilize a microprocessor technology that allows for field-adjustable temperatures or factory preset, and can therefore be deemed as having an "anti-scald feature."

    Do Chronomite Instant Flow Micro heaters have the DOE Energy Star label/sheet? Are they compliant with the Federal Trade Commission's Energy Labeling Rule?
    Chronomite Instant Flow Micro heaters are 99% energy efficient, and do not have these certifications.