General Size Guidelines per household size shown below.
Add 3-1/2 gallon tank capacity for each additional bathroom In the home.
If there is an automatic dishwasher add 
5 gallons to the water heater capacity.

1-2 people:        2-3 people:      3-4 people:      5+ people:
30-40 gallons     40-50 gallons     50-60 gallons  
   60-80+ gallons

What is a Water Heater?

A Water Heater is an appliance designed to provide a steady supply of heated water for residential or commercial use. It ensures that water is available at the right temperature for bathing, cooking, cleaning, and other everyday needs. By heating and storing water in a tank—or heating it on demand—water heaters make modern living more convenient and efficient.

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Performance Features
  • On demand, consistent and endless hot water
  • Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F*
  • 99.8% Energy efficient
  • Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
  • Simple Installation
  • Digital temperature display
  • External controls to adjust temperature in increments of 1°F Applications
  • Whole-Home  up to 6 GPM
  • Water-Saver Shower Head  1.5 GPM
  • Standard Shower Head  2.0 GPM
  • Standard Hand Sink  0.5 GPM
  • Kitchen Sink  1 to 2 GPM
  • Bath Tub   4 GPM
  • Dishwasher  1 to 2 GPM
  • Washing Machine  1 to 1.5 GPM Average Gallons Per Minute (GPM) based on 2010 Plumbing Standards

    Rheem Water Heaters RTEX-18

  • Item#:
    RTEX-18
    Manufacturer Item:
    RTEX-18
    Manufacturer:
    RHEEM SALES COMP(WATER HEATER)
    Rheem Water Heaters RTEX-04 1-Element Tankless Electric Water Heater 120v 3.5 kw 0.3 - 4.8 gpm,
    ,

    Rheem Water Heaters RTEX-04

    Item#:
    RTEX-04
    Manufacturer Item:
    RTEX-04
    Manufacturer:
    RHEEM SALES COMP(WATER HEATER)
    Rheem Professional Classic RTEx-27 3-Element Tankless Electric Water Heater, 240 VAC , 27 kw, 0.3 - 7 gpm Professional classic energy efficient tankless electric indoor inline water heaters offer continuous/endless hot water quickly and on demand for single point-of-use such as sinks, showers or bathroom or multiple applications. These compact tankless residential electric water hot heaters are also great RVs, campers, mobile homes and travel trailers. Rheem's compact low profile design allow these small, yet highly powerful, eco friendly and money saving 4.8 gpm point of use tankless water heaters to fit easily under kitchen and bathroom sinks and counters.
    • On demand, consistent and endless hot water
    • Compact and stylish with digital temperature control in increments of 1 deg F ranging from 80 - 140 deg F
    • Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
    • External controls to adjust temperature in increments of 1 deg F
    • Offer continuous hot water quick and on demand for 1-point-of-use or multiple applications
    • 5 years heating chamber and 1 year parts limited warranty
    • Simple installation
    • External digital thermostatic control with LED display (plus or minus 1 deg accuracy)
    • For 6 gpm whole-home, 1.5 gpm water-saver shower head, 2 gpm standard shower head, 0.5 gpm standard hand sink, 1 - 2 gpm kitchen sink and dishwasher, 4 gpm bath tub, 1 - 1.5 gpm washing machine
    • Most advanced self-modulation, adjust power to meet hot water demand
    • (3) 40 amp recommended breaker size Professional classic energy efficient tankless electric indoor inline water heaters offer continuous/endless hot water quickly and on demand for single point-of-use such as sinks, showers or bathroom or multiple applications. These compact tankless residential electric water hot heaters are also great RVs, campers, mobile homes and travel trailers. Rheem's compact low profile design allow these small, yet highly powerful, eco friendly and money saving 4.8 gpm point of use tankless water heaters to fit easily under kitchen and bathroom sinks and counters.,
      ,

      Rheem Water Heaters RTEX-27

    Item#:
    RTEX-27
    Manufacturer Item:
    RTEX-27
    Manufacturer:
    RHEEM SALES COMP(WATER HEATER)
    The SuperStor ultra indirect water heat is a culmination of over 30 years of indirect system manufacturing experience. The 316L stainless steel tank resists corrosion and eliminates the need for anode rods, allowing for the system to be virtually maintenance free. The heater draws energy from a boiler and thus does not need its own heat source. Hot boiler water flows through an internal heat exchanger in the tank, heating the domestic water. The SuperStor boasts three to five times more recovery than conventional gas-fired or electric water heaters.
    • Stainless steel internal bent hot water outlet tube
    • Attractive silver finish cover that resists dents and corrosion
    • High output finned cupronickel heat exchanger provides maximum efficiency 11 fins per"
    • 316L stainless steel tank for high temperatures and corrosion resistance
    • Environmentally safe, CFC free water blown, 2" thick foam insulation allows less than 1/2 deg F heat loss per hour
    • Immersion type stainless steel control well

      Super-Stor SSU60E

    Item#:
    SSU60E
    Manufacturer Item:
    SSU60E
    Manufacturer:
    EMERSON-SWAN INC
    The SuperStor ultra indirect water heat is a culmination of over 30 years of indirect system manufacturing experience. The 316L stainless steel tank resists corrosion and eliminates the need for anode rods, allowing for the system to be virtually maintenance free. The heater draws energy from a boiler and thus does not need its own heat source. Hot boiler water flows through an internal heat exchanger in the tank, heating the domestic water. The SuperStor boasts three to five times more recovery than conventional gas-fired or electric water heaters.
    • Stainless steel internal bent hot water outlet tube
    • Attractive silver finish cover that resists dents and corrosion
    • High output finned cupronickel heat exchanger provides maximum efficiency 11 fins per"
    • 316L stainless steel tank for high temperatures and corrosion resistance
    • Environmentally safe, CFC free water blown, 2" thick foam insulation allows less than 1/2 deg F heat loss per hour
    • Immersion type stainless steel control well

      Super-Stor SSU119E

    Item#:
    SSU119E
    Manufacturer Item:
    SSU119E
    Manufacturer:
    EMERSON-SWAN INC
    Superstor SSU119 Indirect Water Heater 119 Gallon 268k BTU 27" x 74"

    Superstor SSU119

    Item#:
    SSU119
    Manufacturer Item:
    SSU119
    Manufacturer:
    EMERSON-SWAN INC
    The SuperStor ultra indirect water heat is a culmination of over 30 years of indirect system manufacturing experience. The 316L stainless steel tank resists corrosion and eliminates the need for anode rods, allowing for the system to be virtually maintenance free. The heater draws energy from a boiler and thus does not need its own heat source. Hot boiler water flows through an internal heat exchanger in the tank, heating the domestic water. The SuperStor boasts three to five times more recovery than conventional gas-fired or electric water heaters.
    • Stainless steel internal bent hot water outlet tube
    • Attractive silver finish cover that resists dents and corrosion
    • High output finned cupronickel heat exchanger provides maximum efficiency 11 fins per"
    • 316L stainless steel tank for high temperatures and corrosion resistance
    • Environmentally safe, CFC free water blown, 2" thick foam insulation allows less than 1/2 deg F heat loss per hour
    • Immersion type stainless steel control well

      Super-Stor SSU45E

    Item#:
    SSU45E
    Manufacturer Item:
    SSU45E
    Manufacturer:
    EMERSON-SWAN INC
    Viessmann SSU80 Indirect Water Heater 80 Gallon Heater,
    ,

    Super-Stor SSU80

    Item#:
    SSU80
    Manufacturer Item:
    SSU-80
    Manufacturer:
    HEAT TRANSFER OF NEW YORK LLC
    Buderus SU80 Indirect Water Heater 77.4 Gallon BTU Input 119K

    Buderus SU80

    Item#:
    SU80
    Manufacturer Item:
    8718541924
    Manufacturer:
    BOSCH THERMOTECHNOLOGY CORP
    Superstor SSP50 Indirect Water Heater 50 Gallon Stainless Steel

    Superstor SSP50

    Item#:
    SSP50
    Manufacturer Item:
    SSP-50
    Manufacturer:
    EMERSON-SWAN INC
    Buderus SU54 Indirect Water Heater 51.3 Gallon
  • Information
  • Type Indirect Water Heater
  • Product Line SU
    Product Category
  • Water Heater - Indirect-Fired
  • Storage Type Tank
  • Coils Quantity 1
    Performance
  • First Hour Delivery 144 Gallons
  • Continuous Recovery Rate 107 Gallons
    Dimensions
  • Storage Volume 52.8 Gallons
  • Cold Water Inlet 1"
  • Hot Water Outlet 1"
  • Boiler Supply 1"
  • Boiler Return 3/4"
  • Product Height 60-1/4"
  • Product Width 21-3/4"
  • Product Depth 21-3/4"
  • Product Weight 185 Pounds
  • Parts Warranty 8 Years,
    ,

    Buderus SU54

  • Item#:
    SU54
    Manufacturer Item:
    8718543070
    Manufacturer:
    BOSCH THERMOTECHNOLOGY CORP
    Buderus SST150-40 Indirect Water Heater 40 Gallon
  • Information
  • Type Indirect Water Heater
  • Product Style SST
  • Category Water Heater - Indirect-Fired
  • Storage Type Tank
  • Coils Quantity 1
  • Connection Type NPT
  • Performance
  • First Hour Delivery 208 Gallons
  • Continuous Recovery Rate 181 Gallons
  • Storage Volume 40 Gallons
  • Cold Water Inlet 1"
  • Hot Water Outlet 1"
  • Boiler Return 1"
  • Product Height 56"
  • Product Width 20"
  • Product Depth 20"
  • Product Weight 105 Lbs.
  • Parts Warranty 8 Years,
    ,

    Buderus SST150-40

  • Item#:
    SST150-40
    Manufacturer Item:
    7738001642
    Manufacturer:
    BOSCH THERMOTECHNOLOGY CORP
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