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Simple, straightforward and low shipping rates for these Instant-Flow water heaters.


Instant-Flow® Water Heaters

By Chronomite

Since 1966, Chronomite Laboratories Inc. has been the innovative leader in providing solutions for commercial and industrial tankless plumbing applications. Their units offer on-demand, unlimited hot water by heating the water as it passes through the celcon waterways. Their uniquely designed element assembly, which allows flow-through abrasive action of water, creates a self-cleaning feature, eliminating alkali calcification build-up. PlumbingSupply.com® is pleased to offer their innovative, quality products.

Note: Prior to ordering, please check/confirm the temperature rise limits of all brands of instant tankless water heaters to make certain that they will meet your needs. We guarantee that they will heat as the manufacturer states in the specifications, but instant heaters are not for every water-heating application and will only offer the heat rise stated for each model.



Instant-Flow® SR Series Electric Tankless Water Heaters

★ These tankless water heaters are quickly becoming very popular! ★

Instant-Flow point of use electric tankless water heater



Super small, super efficient, super water heating!

Proudly made in the USA
made in USA button image
These point of use water heaters feature:
  • Instantaneous, on-demand hot water in two seconds, reducing hot water delivery time and potential water waste
  • Uses only a cold water line and electrical hookup
  • Eliminates need for costly piping/valving associated with conventional hot water heaters, saving you time and money
  • Easy to install, compact size (6-1/4" x 9-5/8" x 2-3/4") fits nearly anywhere and maintains wheelchair accessibility
  • 98% energy efficient
  • Unique self-cleaning design for reduced maintenance requirements
  • Vandal resistant cast aluminum housing includes integral mounting brackets
  • Min flow options of either 0.5gpm or 1gpm
  • Faucet flow controls and compression fittings included
  • Must be mounted horizontally only to prevent heating element burn out
  • Great for use in public lavatory, non-public lavatory, dishwasher, kitchen/bar sink, service sink, scrub sink, shower and special applications
  • View dimensions
  • Proudly made in the USA

Electric tankless hot water heaters are an ideal solution for hot water problems in remote locations, or where you don't want the hassle of a large tank-style water heater. Designed to be a compact and efficient primary water heater, these powerful machines must be supplied with cold incoming water only, making it easy to choose the right temperature rise to meet your hot water needs. If you only need to take the chilly edge off the incoming water, or you have warmer incoming ground water, select a low rise model, like the 24°F or 33°F rise units. Get hot water to a dishwasher with a 75°F rise in water temperature. Or pair these tiny tankless water heaters with a quality thermostatic mixing valve for endless hot water in your shower. Whichever unit you choose, you're sure to get a point of use tankless water heater that will work as hard as you do for years to come.

LOW FLOW SR SERIES MODELS

Specifications:

  • Turns on at 0.4 gpm flow rate
  • Requires a minimum of 25 psi
  • Deactivates if flow drops to 0.35 gpm
  • Failure to install the provided faucet flow regulator will cause unsatisfactory operation
  • No pressure and temperature relief valve needed (unless required by local code)

Model # Temp Rise
at 0.5 gpm
Watts Volts Breaker Price & Quantity
SR-15L 24°F * 1800 120 15 $142.47
57°F 4150 277 15 $141.10
SR-20L 33°F * 2400 120 20 $140.85
57°F 4160 208 20 ★ TOP SELLING 208V MODEL ★
$141.22
65°F 4800 240 20 $141.38
75°F 5540 277 20 $141.16
SR-30L 49°F 3600 120 30 ★ TOP SELLING 120V MODEL ★
$141.68

* Please note: Temperature rise designed for warm incoming water temperatures.

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STANDARD FLOW SR MODELS

Specifications:

  • Turns on at 1.0 gpm flow rate
  • Requires 25 psi minimum pressure
  • Heater will deactivates if flow drops to 0.65 gpm
  • Failure to install the provided faucet flow regulator will cause unsatisfactory operation
  • No pressure and temperature relief valve needed (unless required by local code)

Model # Temp Rise
at 1.0 gpm
Watts Volts Breaker Price & Quantity
SR-30 42°F 6240 208 30 $141.96
49°F 7200 240 30 $141.65
57°F 8310 277 30 $141.17
SR-40 57°F 8320 208 40 $140.78
65°F 9600 240 40 $141.23

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Don't know what your incoming water temperature is? This groundwater map might help.



Chronomite Instant-Flow® Micro Tankless Electric Water Heaters

Instant-Flow Micro tankless water heater

Smaller than a hardbound book, these fantastic little heaters pack a big water-heating punch!

Proudly made in the USA
made in USA button image
These Micro series tankless electric water heaters feature:
  • Unlimited hot water is delivered at an even temperature without risk of scalding
  • Digital microprocessor control monitors the water temperature and helps prevent burns
  • Select from factory preset temperatures at 104°F, 110°F or 120°F (please specify below)
  • Compact size (6-1/4" x 9-5/8" x 2-3/4") can be installed nearly anywhere and meets ADA requirements by maintaining wheelchair accessibility
  • 98% energy efficient
  • Low installation cost
  • Can be supplied with either cold or hot water to the inlet line
  • Great for use in public lavatory, non-public lavatory, kitchen/bar sink, service sink, scrub sink, shower, dishwasher and special applications
  • View dimensions
  • Proudly made in the USA

These compact electric tankless water heaters are all designed with a factory preset temperature stop. Since the preset temperature limit cannot be changed in the field, it can't be changed accidentally, which virtually eliminates any danger of scalding. The factory-preset temperature stop also means that these electric tankless water heaters are fine to use as a secondary heater to boost pre-heated water and still keep sensitive skin safe.

LOW FLOW MICRO MODELS:

Specifications:

  • Heating element activates at 0.4 gpm flow rate
  • Requires 25 psi minimum pressure
  • Minimum operating flow rate is 0.5 gpm
  • Heater will deactivate at flows of .35gpm and lower
  • Failure to install the provided faucet flow regulator will cause unsatisfactory operation
  • No pressure and temperature relief valve needed (unless required by local code)

Model Temp Rise
at 0.5 gpm
Watts Volts Breaker Price & Quantity
120°F
Price & Quantity
110°F
Price & Quantity
104°F
M-15L 57°F 4150 277 15 $182.25 $181.29 $181.82
M-20L 33°F * 2400 120 20 $182.21 $181.38 $181.76
57°F 4160 208 20 $182.25 $181.64 $181.90
65°F 4800 240 20 $181.76 $181.96 $181.96
75°F 5540 277 20 $181.74 $181.62 $181.24
M-30L 49°F 3600 120 30 $181.57 $181.38 $181.74

* Please note: Temperature rise designed for warm incoming water temperatures.

NOTE: The microprocessor adjusts the heater's power for variations in flow rates and pressure to assure the selected factory preset water temperature. The microprocessor limits temperature rise according to the factory set temperature.

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STANDARD FLOW MICRO MODELS:

Specifications:

  • 1.0 gpm flow rate
  • 25 psi minimum pressure
  • Minimum operating flow rate at 1.0 gpm
  • Heater will deactivate at flows of .65gpm and lower
  • Failure to install the provided faucet flow regulator will cause unsatisfactory operation
  • No pressure and temperature relief valve needed (unless required by local code)

Model Temp Rise
at 1.0 gpm
Watts Volts Breaker Price & Quantity
120°F
Price & Quantity
110°F
Price & Quantity
104°F
M-30 42°F 6240 208 30 $182.39 $181.39 $182.17
49°F 7200 240 30 $181.96 $181.77 $181.31
57°F 8310 277 30 $181.67 $182.32 $182.31
M-40 57°F 8320 208 40 $181.53 $181.93 $181.93
65°F 9600 240 40 $181.49 $182.19 $182.32
75°F 11080 277 40 $181.79 $181.44 $182.03
M-50 79°F 11520 240 50 $181.46 $181.36 $181.76

NOTE: The microprocessor adjusts the heater's power for variations in flow rates and pressure to assure the selected factory preset water temperature. The microprocessor limits temperature rise according to the factory set temperature.

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Water Heater Parallel Mounting Kit
tankless water heater parallel kit
This tankless water heater parallel mounting kit features:
  • Allows two identical tankless water heaters to be connected to produce a greater flow rate
  • Installing a pre-measured kit helps ensure equal use of both tankless water heaters
  • Fits many point-of-use tankless water heaters
  • Includes two pre-soldered piping sections and four 1/4"mips x 3/8" compression fittings
  • Click for dimensional information
  • Click for installation example
Description Price & Quantity
Parallel Kit for Tankless Water Heaters $57.33
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Water Heater Scale Inhibitor System
water heater scale inhibitor system
This water heater scale inhibitor system features:
  • 3/4" NPT
  • 10 gpm
  • Cold water feed line
  • Inhibits scale build-up caused by hard water
  • Helps protect piping from corrosion
  • Maintains efficiency and extends life of system
  • Translucent dispenser cartridge allows for convenient detection of remaining scale stopper level
  • Slow dissolve rate for long life and consistent dosing
  • Venturi tee is constructed from stainless steel and meets all low lead requirements for both federal and state
  • Multi-application design effective on all types of hot water systems-boilers, tankless, and tank-type (gas or electric)
  • Installs on cold waterline before water heater - can be installed in any direction
  • Scale Inhibitor media is siliphos which is suitable for drinking and cooking water and all food applications
  • Replacement cartridges (AP431) are available for these in-line scale inhibitor systems
  • Additional fittings may be needed for installation directly in front of point of use heaters
  • Please note: This product is NOT made in the USA
Description Price & Quantity
Water Heater Scale Inhibitor System
  Order 6 or more for greater savings!
$69.95
Replacement cartridge for water heater scale inhibitor system
  Order 10 or more for even greater savings!
$29.99
Note: Recommended time to change/replace filter cartridge is 6 months.
Purchase a replacement cartridge to have on hand when needed.
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Note: if you're replacing multiple water heaters (old tank style),
you may want to order a water heater drain pump to reduce labor by quickly/easily removing the water.




Please note: While we strive to ensure every product we label as "Made in the USA" really is 100% made in the USA, it is also important to understand that sometimes manufacturers make changes to their products, or for various reasons may receive components or materials that they would normally purchase domestically from an overseas supplier - and they don't necessarily let distributors (like us!) know that they've changed something about the product or where it is manufactured.

If you receive a product that PlumbingSupply.com® says is "Made in the USA" and the product states it was manufactured elsewhere, please contact us. We will happily replace or refund your purchase to your satisfaction.

Frequently Asked Questions

Q. "For the Instant-Flow® Micro tankless water heaters, if I order one with factory preset temperature of 104 degrees, what happens after I've received the unit and realized that I want it to set at 110 degrees. Can I change the temperature then? Is that possible?"
A. No, you will not be able to change the factory preset temperature for these units. So before ordering, make sure to select one with the desired factory preset temperature. If you want to be able to change your water temperature you can order the Instant-Temp® water heaters, which allow you to adjust/change the water temperature.

Q. "Will an instantaneous water heater save me money on my utility bills?"
A. In many applications you can see a savings. There are some variables that could reduce the amount you save. One example is you will not run out of hot water, so longer showers could cut into your savings. Also, the cost of electricity, propane and natural gas in your area will affect the amount of money saved. The higher the cost for the energy type used to heat your water, the quicker you can recover the higher initial cost of installing a tankless versus tank style water heater.

Positives:

    You will never run out of hot water. "You want an hour long shower? No problem!"
    Electric units can be installed at the point of use.
    You're not paying energy costs to heat water 24 hours a day.
    They're easy to install.
    Our electric units don't require a T&P valve (no tank!) - if code allows
    Installing a tankless water heater can indeed be a bonus to the environment (why should we choose wastefulness when we're talking about finite natural resources?)

Negatives:

    They all need a minimum flow rate & pressure to turn on.
    The faster water flows through them, the lower the temperature rise. So, if you expect to take a shower while the clothes washer is running, you will need to select a unit sized to your maximum hot water flow requirements. (Gas units generally handle this a little better than electric models)
    Electric units need heavy gauge wire. Example: the 9.5kw must have 8ga wire and a 50amp breaker.
    Gas units need a much larger, special flue pipe and larger gas supply than a conventional water heater.
    At times they can produce very hot water. It's easier to get scalded.
    Gas units are more complicated than a conventional water heater.
    With some brands, parts are hard to find (not a negative if you originally purchase from us, as we like to carry parts for the units that we sell).

Summary:
Tankless water heaters have their place. They're not "the answer" to every hot water need, but if they're used correctly they can be the solution to many of them.

Q. "How come there is not a factory preset temperature with the Instant-Flow® SR models?"
A. The temperature you get from the units are going to depend on the model ordered and the incoming water temperature.

Q. "Your products specify the 'temp. rise' based on the gpm flow; what do you mean by this?"
A. Temperature rise is the amount the heater raises the temperature of the incoming water, based on the flow rate shown of that water. If you don't know what your incoming water temperature is, we offer a chart that shows average groundwater temperatures in the USA, or you can check with your local water district for the actual temperature in your area. Please note this can be adjusted by any sort of preheating (such as solar heaters).

Q. "How much do I need to raise my incoming ground water temperature for ____________"
A. This is a highly personal question as everyone's opinion is different. Combine that with the differences in incoming water temperatures and you have a different answer for each installation. However, a lot of studies have been done on what people (on average) find comfortable, so we can give you some very general numbers to help you narrow the possibilities. These studies have shown that most people are comfortable washing their hands at near body temperature and find showers comfortable at 95°F to 105°F, depending on whether they prefer cool or hot showers. Nearly everyone agrees that 57°F is too chilly for comfortable handwashing, much less showering.

Q. "What are the best reasons to install a Scale Inhibitor System?"
A. The system inhibits scale build-up and protects the piping from corrosion, which helps maintain efficiency and extends the life of the system.

Q. "Can I install this scale inhibitor upside down?"
A. This scale inhibitor can be installed in any direction with the filter pointing in any direction as long as the water flow direction is correct and the system has suitable pressure to function properly. Please note, the manufacturer recommends that the filter be supported if the Venturi tee is not installed horizontally with the filter outlet pointing downward. Also, if the Venturi tee is not installed horizontally with the filter outlet pointing downward, it may be more difficult to catch the remaining water in the line when replacing the cartridge. As always, please consult with a trusted local professional if you are at all unsure about correctly installing this scale inhibitor.

Q. "What is siliphos?"
A. Siliphos is a water treatment compound; a glass-like Polyphosphate containing Sodium, Calcium Magnesium and Silicate, formulated specifically for the treatment of water problems and to prevent the build-up of scale in plumbing. It is made from a blend of food grade organic phosphates, and has been approved by the USDA for drinking water and all food applications. It is safe for ingestion by humans, animals, and plants, and does not build up in waste water.

Q. "I'm hearing a lot about lead-free these days. What does that have to do with plumbing products and how does the new lead-free legislation affect me?"
A. Basically, the laws implemented Jan. 1st, 2014 require plumbing products that come in contact with drinking water to be essentially lead free (less than 0.25% weighted average). For further information about how the law determines what is lead free, rules regarding which plumbing products must be lead free, and who these laws will affect, please visit our LEAD FREE Plumbing Information page.

Q. "Will the Water Heater Scale Inhibitor System change the taste or odor of water?"
A. No. The active ingredient is colorless, tasteless, and odorless when used as recommended.

Q. "How does the Water Heater Scale Inhibitor System prevent corrosion?"
A. It forms a thin protective layer on the inside of pipes and metal parts. This film or layer is microscopic in thickness and will not build up over time.

Q. "What happens if you don't change cartridges often enough on the Scale Inhibitor System?"
A. The original water condition and problem will reappear. Hardness will begin to build up again, which you want to avoid.

Q. "Is the Water Heater Scale Inhibitor System's active ingredient safe?"
A. Yes! All ingredients used are 100% pure food grade materials. They are approved by the USDA and meet purity requirements as a food additive by the World Health Organization.



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