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Bosch Powerstream Pro Tankless
Electric Water Heaters

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Customers who have purchased electric water heaters have also been:
to EverHot® tankless water heaters by Bradford White - to our tankless water heaters index page
to scald prevention valves - to point-of-use water heaters - to Chronomite Instant-Temp® tankless water heaters
to stainless steel water heater gas flexes - to de-ionized tankless water heaters - to digital readout tankless water heaters
to mini tank water heaters - to electric towel rails

Low rates and easiest to calculate/understand shipping/handling for tankless water heaters

The Powerstream Pro Tankless point-of-use electric water heaters from Bosch are an innovative solution to heating water at the source. With many to choose from, you can customize your water-heating usage. Go tankless with a Powerstream Pro Tankless water heater from Bosch.

Point-Of-Use Electric Tankless Model # RP12PT
Point-Of-Use Electric Tankless Model # RP12PT
Features:

Water is heated as it flows through the Powerstream, so you will never run out of hot water.

The exterior housings of the Powerstream heaters are made of metal, not plastic.

The Powerstream Pro is ideal for 1 sink at a time & is the perfect solution for home and office sinks.

Powerstream Pro is a premium water heating product that uses a solid copper heat exchanger and copper sheathed heating elements to instantly heat water. A durable plastic housing protects the interior components.

Because of the safety switch that these heaters have, the elements on these heaters will not burn out if they are "dry-fired" (i.e., powered without water running through them).

Powerstream Pro features a compact design and can be mounted in any direction (with the exception of the RP12PT) - making it the ideal point-of-use water heater for virtually any sink installation.

The Powerstream Pro model RP12PT features thermostatic control. In warm climates where ground water is 60°F or higher, it can deliver a low-flow shower.

  • Unlimited hot water - Water is heated as it flows through the Powerstream Pro, so you will never run out of hot water.
  • Saves energy - Powerstream Pro is 99% efficient and heats water only when the tap is turned on. And, Powerstream stores no hot water, so there is no standby heat loss.
  • Saves water - Instant hot water means no more wasting water while waiting for water to get hot. Such cold water "run out" accounts for 80 billion gallons of wasted water per year in the U.S.
Specifications:
(Please look these over carefully to determine if these heater models will suit your needs)


Model Volts Amps Element
Resistance
High
Setting
Low
Setting
Wire
Size
Temperature
.50GPM .75GPM 1.0GPM 1.5GPM 2.0GPM
RP1P * 240 40 2x12 ohm 9.5kW -- 8 GA N/A 84°F 64°F 42°F 32°F
240 20 1x12 ohm -- 4.75kW N/A 42°F 32°F 21°F 16°F
RP2P 277 22 2x25 ohm 6.0kW -- 10 GA 81°F 55°F 42°F 27°F N/A
277 11 1x25 ohm -- 3.0kW 41°F 28°F 21°F 14°F N/A
RP3P 120 29 2x8 ohm 3.4 - 3.0kW -- 10 GA 41°F 28°F 20°F N/A N/A
RP7P * 240 30 2x16 ohm 7.2 - 6.1kW -- 10 GA 96°F 63°F 48°F 32°F 24°F
240 15 1x16 ohm -- 3.6 - 3.0kW 48°F 32°F 24°F 16°F 12°F
RP9P 277 35 2x15.8 ohm 9.5kW -- 10 GA N/A 84°F 64°F 42°F 32°F
277 17.5 1x15.8 ohm -- 4.75kW N/A 42°F 32°F 21°F 16°F
RP12PT + 240 50 -- 12.0kW -- 6 GA 72°F 72°F 72°F 52°F 42°F

* Will operate on 208 volt at 75% of capacity.
+ Designed for operation on 240 volt only.
Dimensions: 12-1/4" x 6-1/2" x 3"

NOTE: Powerstream Pros are not designed to accept preheated water.

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.

Model # Descprition Price & Questions
RP1P PowerStream Pro Electric Tankless Water Heater - 240-208V $238.14
RP2P PowerStream Pro Electric Tankless Water Heater - 277V $239.00
RP3P PowerStream Pro Electric Tankless Water Heater - 110V $239.17
RP7P PowerStream Pro Electric Tankless Water Heater - 240V $240.20
RP9P PowerStream Pro Electric Tankless Water Heater - 277V $239.26
RP12PT PowerStream Pro Electric Tankless Water Heater - 240V $250.49

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Please allow 5-7 days lead time to ship these tankless water heaters.

PowerStream Pro Tankless # RP17PT
PowerStream Pro Tankless RP17PT Features:

Provides 2.3 gallons per minute for water usage at 105°F *
- shower, laundry or bathtub.
Provides 2.0 gallons per minute for water usage at 115°F *
- one sink or dishwasher not simultaneously.
* Assumes 55°F inlet temperature

Specifications:

Energy Factor 0.95
Efficiency 95%
Weight 20 lbs.
Dimensions 15-1/2" x 15-1/4" x 4-1/2"
Voltage 240 volts
Wire Size 8 GA
Amps 80 (2x40)
Kilowatts 17.25 kWh
Water fittings 3/4" male NPT
Model # Descprition Price & Questions
RP17PT PowerStream Pro Electric Tankless Water Heater $557.00

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Please allow 5-7 days lead time to ship these tankless water heaters.

PowerStream Pro Tankless # RP27PT
PowerStream Pro Tankless RP27PT Features:

Provides 3.7 gallons per minute for water usage at 105°F *
- 2 sinks simultaneously or 1 shower or bathtub.
Provides 3.0 gallons per minute for water usage at 115°F *
- 2 sinks simultaneously or 1 dishwasher.
* Assumes 55°F inlet temperature

Specifications:

Energy Factor 0.95
Efficiency 95%
Weight 22 lbs.
Dimensions 15-1/2" x 15-1/4" x 4-1/2"
Voltage 240 volts
Wire Size 8 GA
Amps 120 (3x40)
Kilowatts 26.85 kWh
Water fittings 3/4" male NPT
Model # Descprition Price & Questions
RP27PT PowerStream Pro Electric Tankless Water Heater $804.34

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Please allow 5-7 days lead time to ship these tankless water heaters.

Water Connectors - click here for more flexible water supply lines
Ultraflow gas connectors
These water connectors feature:
  • Stainless steel water ways inside
  • Great for tankless water heaters and more
  • Purchase 10 or more (of the same size) for additional savings
Description Price & Quantity
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 18" Long $6.59
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 24" Long $7.99
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 18" Long $6.89
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 24" Long $7.49

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Hot Water Heater Scale Inhibitor System
hot water heater scale inhibitor system
This water heater scale inhibitor system features:
  • 3/4" NPT
  • 6 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
  • Multi-application design effective on all types of hot water systems-boilers, tankless, and tank-type (gas or electric)
  • Made from FDA CFR-21 compliant materials, suitable for drinking and cooking water and all food applications
  • Replacement cartridges (AP431) are available for these in-line scale inhibitor systems
Description Price & Quantity
Hot Water Heater Scale Inhibitor System $66.10
Replacement filter for hot water heater scale inhibitor system $36.14
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 your existing water heater (old tank style),
you may want to order a water heater drain pump to quickly/easily remove the water.

FloodStop Systems for Water Heaters
Automatically shut off the water supply to the water heater and sounds an alarm, leaving all other household fixtures and appliances operational. Powered by AC Adaptor/Transformer or Batteries. Output contacts available, which allow the Controller to connect with Alarm, Home Automation or Auto-Dialer systems if desired. Easily installed in fifteen minutes. 1-Year Manufacturer's Warranty.
Description Price & Quantity
FS 3/4-NPT - 3/4" Pipe threaded - full-port motorized ball valve (brass)
- Works with any 3/4" MIPT supply line
$104.38
FS 3/4-C - 3/4" Compression - full-port motorized ball valve (brass)
- Works with any 3/4" copper applications
$112.64

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frequently asked questions about tankless water heaters

question about hot water heater scale inhibitor system"What happens if you don't change cartridges often enough on the Scale Inhibitor System?"
system extends life The original water condition and problem will reappear. Hardness will begin to build up again, which you want to avoid.

instant water heaters"Will an instantaneous water heater save me money on my utility bills?"
instant water heatersYes, in most applications you will 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 will 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!)
    Installing a tankless water heater will 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 hot water flow requirements. (Gas units 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.

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

question about hot water heater scale inhibitor system"Is the Hot Water Heater Scale Inhibitor System's active ingredient safe?"
system extends life 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.

question about hot water heater scale inhibitor system"Will the Hot Water Heater Scale Inhibitor System change the taste or odor of water?"
system extends life No. The active ingredient is colorless, tasteless, and odorless when used as recommended.

question about hot water heater scale inhibitor system"How does the Hot Water Heater Scale Inhibitor System prevent corrosion?"
system extends life 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.

We hope that we have helped you on this page with electric tankless water heaters,
and thank you for helping to make PlumbingSupply.com the most famous Internet plumbing supplier.



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