Internet #300800620

Model # RETEX-18

Store SKU #1002624315

0020352682945

Performance 18 kW Self-Modulating 3.5 GPM Electric Tankless Water Heater

  • Save money by heating water when you need it
  • Water heater requires 2 x 40 AMP double pole breakers
  • Same-day installation available. Call 1-855-400-2552
 ($429.00  /unit)
$429.00
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Product Overview

  • Save money by heating water when you need it
  • Water heater requires 2 x 40 AMP double pole breakers
  • Same-day installation available. Call 1-855-400-2552
Designed to help reduce energy costs, this Self-Modulating Electric Tankless Water Heater is the perfect addition to your home. The continuous hot water allows for instant hot water on demand by heating water only when you need it. Easily control the temperature in 1 degree increments from 80 degrees to 140 degrees F.
  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application or 34% when used as a whole-home solution
  • Instant, continuous hot water: instantly provides ample hot water for up to 2 showers and 2 faucets (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location)
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Great investment and value: energy cost savings and a 5-year heat exchanger and 1-year parts limited warranty
  • Easy to adjust: electronic temperature control adjustable in 1-degree increments from 80-140 degrees F with easy-to-read display (Celsius and Fahrenheit compatible)
  • Easy installation: compatible with 3/4 in. water connectors for flex hose installation and no venting or T and P valve required for Easy installation (professional installation recommended)
  • Easy to maintain: durable, easy-to-replace heating elements
  • A reliable hot water solution from Rheem, the global leader in water heating
  • Before purchase and installation, please verify that you have the proper electrical requirements for your chosen heater
  • ETL Listed to UL-499 and CAN/CSA-C22.2 No. 64



  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Save money by heating water when you need it
  • Water heater requires 2 x 40 AMP double pole breakers
  • Same-day installation available. Call 1-855-400-2552
Model #: RETEX-18
Sku #: 1002624315
Internet #: 300800620

Designed to help reduce energy costs, this Self-Modulating Electric Tankless Water Heater is the perfect addition to your home. The continuous hot water allows for instant hot water on demand by heating water only when you need it. Easily control the temperature in 1 degree increments from 80 degrees to 140 degrees F.

  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application or 34% when used as a whole-home solution
  • Instant, continuous hot water: instantly provides ample hot water for up to 2 showers and 2 faucets (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location)
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Great investment and value: energy cost savings and a 5-year heat exchanger and 1-year parts limited warranty
  • Easy to adjust: electronic temperature control adjustable in 1-degree increments from 80-140 degrees F with easy-to-read display (Celsius and Fahrenheit compatible)
  • Easy installation: compatible with 3/4 in. water connectors for flex hose installation and no venting or T and P valve required for Easy installation (professional installation recommended)
  • Easy to maintain: durable, easy-to-replace heating elements
  • A reliable hot water solution from Rheem, the global leader in water heating
  • Before purchase and installation, please verify that you have the proper electrical requirements for your chosen heater
  • ETL Listed to UL-499 and CAN/CSA-C22.2 No. 64



  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

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Compare Similar

Compare Similar Products
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Price
$259.00
$360.90
$429.00
See Lower Price in Cart
Ratings (813) (1274) (813) (21)
Wattage (watts) 11000 18000 18000 28800
Water Heater Features Wall Mountable Wall Mountable Wall Mountable Overheat Protection,Wall Mountable
Flow Rate @ 45 F Rise (gallons/min) 1.67 gal (US)/min 2.73 2.73 4.37
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
3.5
Product Height (in.)
18
Product Width (in.)
14.5
Water Connection Size (in.)
3/4 in. NPT

Details

Amperage (amps)
75
Application Type
Residential
Commercial/Residential
Residential
Electric Product Type
Residential
Finish Family
Gray
Flow Rate @ 35 F Rise (gallons/min)
3.51 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
2.73
Flow Rate @ 55 F Rise (gallons/min)
2.24
Flow Rate @ 65 F Rise (gallons/min)
1.89
Fuel Type
Electric
Heat Exchanger Warranty
5 Year
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
.25
Minimum Temperature (F)
80
Pack Size
1
Product Weight (lb.)
11lb
Required Volt Connection
240 volt
Returnable
180-Day
Uniform Energy Factor
0
Water Heater Features
Wall Mountable
Wattage (watts)
18000
Wattage (watts)
18000

Warranty / Certifications

Certifications and Listings
CSA Listed,ETL Listed,UL Listed
Labor Warranty
No Warranty
Part Warranty
1 Year

Specifications

Dimensions

Product Depth (in.)
3.5
Product Height (in.)
18
Product Width (in.)
14.5
Water Connection Size (in.)
3/4 in. NPT

Details

Amperage (amps)
75
Application Type
Residential
Commercial/Residential
Residential
Electric Product Type
Residential
Finish Family
Gray
Flow Rate @ 35 F Rise (gallons/min)
3.51 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
2.73
Flow Rate @ 55 F Rise (gallons/min)
2.24
Flow Rate @ 65 F Rise (gallons/min)
1.89
Fuel Type
Electric
Heat Exchanger Warranty
5 Year
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
.25
Minimum Temperature (F)
80
Pack Size
1
Product Weight (lb.)
11lb
Required Volt Connection
240 volt
Returnable
180-Day
Uniform Energy Factor
0
Water Heater Features
Wall Mountable
Wattage (watts)
18000
Wattage (watts)
18000

Warranty / Certifications

Certifications and Listings
CSA Listed,ETL Listed,UL Listed
Labor Warranty
No Warranty
Part Warranty
1 Year

Questions & Answers

How many circuits and wht size breakers

Asked by: Sparky
Regardless of who is right or wrong...if RHEEM says it requires 4 x 40 amp double pole breakers that is what you use....otherwise there goes your warranty....or worse! What little I know of electrical tells me the math is right....I am not taking chances just to pretend I know more than the next guy....or save a few bucks!
Answered by: MEANPERSON
Date published: 2020-02-23

My house has 1300 sq feet and we are a family of 3. Will this heater work for my house?

My breaker is 30 amps now can I change it to 60 amps? And this one work better 11kw
Asked by: Eddy
Circuit breakers are sized to wire and other devices that they protect. You should never change a circuit breaker to a larger size before ensuring that the downstream wire and devices are sized to match the circuit breaker. It is likely that the wire and devices in place are only rated for the amperage of the existing breaker and you will not be able to change only the breaker.
Answered by: Kevin
Date published: 2020-02-23

Will this work in a 1 bathroom tub an shower an on a kitchen sink? In southeast South Carolina th...

Will this work in a 1 bathroom tub an shower an on a kitchen sink? In southeast South Carolina thanks
Asked by: Mike
I’m in NJ and can run the shower and the sink at the same time up to 140 degrees all winter. It should supply hot water to at least two things at once. You may need to run water for a bath by itself without any hot water on anywhere else.
Answered by: Jim
Date published: 2020-02-04

My trailer runs completely off electric, can this heater work on a 3 bdr 2 bth, trait

Asked by: Nate
yes
Answered by: GATOR
Date published: 2018-06-22
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