Skip to content
Are you a Pro? Sign Up for FREE Exclusive Benefits with Rise PRO™ Pricing and Rewards
Are you a Pro? Get Rise PRO™ Pricing and Rewards

Stiebel Eltron SBB 400 Plus Storage Tank

SKU 187874
Original price $2,499.00 - Original price $2,499.00
Original price
$2,499.00 - $2,499.00
Current price $2,499.00
in stock

The Stiebel Eltron SBB 400 Plus (Dual Heat Exchanger Indirect Storage Tank 109 gal.series tanks can be used in residential or commercial installations as indirectly-fired domestic hot water storage tanks in conjunction with any type of boiler, geothermal, or solar hot water application. 

The vessels and heat exchangers in the tanks are made from heavy gauge steel. All surfaces in contact with domestic hot water receive a thick ­porcelain enamel coating after shot-peening to clean the steel surface.

Stiebel Eltron SBB series tanks are equipped with either one or two large-bore heat exchangers, designed to maximize heat transfer. Excellent for solar thermal applications, the SBB 400 Plus tank can be used with an external backup heater.


  • Solar-ready
  • Powder-coated steel outer jacket
  • Standard junction box for electrical connection 
  • all connections are NPT
  • Two auxiliary ports
  • The sleeved heating element can be replaced without draining the tank
  • Sacrificial anode rod
  • Up to 3˝ R-21 urethane foam insulation for low standby heat loss
  • Large cleanout port for ease of maintenance
  • Backed by a 10-year limited warranty

    Order Processing and Shipping

    Rise ships manufacturer direct. We work hard so you receive your product(s) as quickly as possible. Learn more about our order processing & shipping times here.


    DHW Tank ModelSBB 300 PlusSBB 400 PlusSBB 600 P lus
    Part number187873187874187875
    Storage capacity80.6 gal (305 l)108.6 gal (411 l)162.9 gal (617 l)
    Upper heat exchanger volume1.9 gal (7.3 l)2.2 gal (8.2 l)2.5 gal (9.6 l)
    Lower heat exchanger volume2.7 gal (10.2 l)3.0 gal (11.3 l)3.5 gal (13.2 l)
    Working pressure150 psi (10 bar)150 psi (10 bar)150 psi (10 bar)
    Tested to pressure217 psi (15 bar)217 psi (15 bar)217 psi (15 bar)
    Max. pressure of boiler loop150 psi (10 bar)150 psi (10 bar)150 psi (10 bar)
    Max. temp. upper loop266 °F (130 °C)266 °F (130 °C)266 °F (130 °C)
    Max. temp. lower loop266 °F (130 °C)266 °F (130 °C)266 °F (130 °C)
    Surface area of heat exchanger, upper1705 in2 (1.1 m2 )2015 in2 (1.3 m2 )2945 in2 (1.9 m2 )
    Surface area of heat exchanger, lower2325 in2 (1.5 m2 )2635 in2 (1.7 m2 )3875 in2 (2.5 m2 )
    Tank weight empty339 lb (154 kg)412 lb (187 kg)544 lb (247 kg)
    Tank weight full1051 lb (477 kg)1362 lb (618 kg)1955 lb (887 kg)
    Height with insulation66 1/8" (1679 mm)72 3/4" (1848 mm)68 5/16" (1735 mm)
    Width with insulation27 9/16" (700 mm)29 1/2" (750 mm)36 1/4" (920 mm^2)
    Thickness of insulation3" (75 mm)3" (75 mm)3 3/8" (85 mm2 )
    Cold/hot water connection1˝ male BSPP, with sweat adaptor to 1˝ copper pipe
    HX/Aux. connections1˝ female male BSPP, with sweat adaptor to 1˝ copper pipe
    Standby losses in 24 hours6500 Btu (1.9 kWh)7500 Btu (2.2 kWh)7500 Btu (2.2 kWh)
    Continuous Draw (Upper Coil) (1) Flow Rate Output

    212.4 gal/hr (804 l/hr) 

    111,680 Btu (33 kW)

    244.9 gal/hr (927 l/hr) 128,768 Btu (37.7 kW346.9 gal/hr / 1,313 l/hr 182,399 Btu (53.5 kW)
    Continuous Draw (Lower Coil) (1) Flow Rate Output

    285.6 gal/hr (1,081 l/hr) 

    150,168 Btu (44 kW

    312 gal/hr (1,181 l/hr) 164,049 Btu (48 kW)461 gal/hr (1,745 l/hr) 242,393 Btu (71 kW)

    1 Continuous draw data based on 167 °F (75 °C) heat input / 113 °F (45 °C) DHW output / 50 °F (10 °C) cold water input

    2 Insulation is partially removable to reduce width to 31 ½˝ (800 mm) for clearance purposes

    Accelera E Heater Brochure

    Specifications and Installation Guide

    Warranty Information




    Carbon-neutral shipping with Shopify Planet
    Carbon-neutral shipping on all orders
    shipping emissions removed
    That's like...
    miles driven by an average gasoline-powered car
    We fund innovations in...
    Direct Air Capture
    Bio Oil

    Interested in Deals and New Products?

    Keep up-to-date on deals and new home building products that benefit your health, your wealth, and the planet delivered right to your inbox.

    Skip to content