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Indirect Water Heaters

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Product Image of 41 Gallon CH-41Z BoilerMate Champion Series Indirect-Fired Water Heater (Blue)
$1,879.99 each
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Product Image of Aqua-Plus 45 Pewter Indirect Water Heater
Aqua-Plus 45 Pewter Indirect Water Heater
SKU: 633-600-001
Weil-McLain
SKU: 633-600-001
Brand: Weil-McLain
(29)
$1,991.61 each
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Product Image of AL35SL Alliance Hydrastone-Lined Indirect Water Heater
$1,742.80 each
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Product Image of AL50SL Alliance Hydrastone-Lined Indirect Water Heater
$1,886.20 each
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Product Image of S32, 31.7 Gallon Indirect Water Heater
$1,708.96 each
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Product Image of 55 Gallon Alliance Light Transport Indirect Water Heater w/ TPI Thermostat
$1,601.66 each
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Product Image of 80 Gallon, Squire SIT080 Indirect Water Heater
$2,598.28 each
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Product Image of Aqua-Plus 55 Pewter Indirect Water Heater
Aqua-Plus 55 Pewter Indirect Water Heater
SKU: 633-600-002
Weil-McLain
SKU: 633-600-002
Brand: Weil-McLain
(14)
$2,676.31 each
In Stock
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Product Image of Aqua-Plus 85 Pewter Indirect Water Heater
Aqua-Plus 85 Pewter Indirect Water Heater
SKU: 633-600-003
Weil-McLain
SKU: 633-600-003
Brand: Weil-McLain
(1)
$3,213.58 each
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Product Image of 40 Gallon, Squire SIT040 Indirect Water Heater
$2,286.60 each
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Product Image of 52 Gallon, Squire SIT050 Indirect Water Heater
$2,079.74 each
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Product Image of 67 Gallon, Squire SIT065 Indirect Water Heater
$2,391.01 each
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Product Image of 80 Gallon Alliance Light Transport Indirect Water Heater w/ TPI Thermostat
$2,280.17 each
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Product Image of 75 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-80-L
$2,375.47 each
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Product Image of 50 Gallon Laars-Stor Stainless Steel Single-Wall Indirect Water Heater
$3,152.14 each
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Product Image of AL70SL Alliance Hydrastone-Lined Indirect Water Heater
$2,523.96 each
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Product Image of 30 Gallon Alliance Light Transport Indirect Water Heater w/ TPI Thermostat
$1,500.42 each
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Product Image of 113 Gallon, Squire SIT119 Indirect Water Heater
$4,125.64 each
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Product Image of SB 300 E 79 Gallon Single Coil DHW Indirect Water Heater Tank
$2,580.32 each
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Product Image of 60 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-65-L
$2,300.80 each
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Product Image of 80 Gallon CH-80Z BoilerMate Champion Series Indirect-Fired Water Heater
$2,768.82 each
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Product Image of 30 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-30-L
$1,794.85 each
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Product Image of LT-160, 42 Gallon - 93,000 BTU Indirect Water Heater
$2,441.02 each
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Product Image of 48 Gallon - Residential PowerStor Series Single Wall Indirect Water Heater
$2,500.19 each
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Product Image of 75 Gallon - Residential PowerStor Series Single Wall Indirect Water Heater
$2,536.35 each
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Product Image of 40 Gallon Laars-Stor Single-Wall Indirect Water Heater
40 Gallon Laars-Stor Single-Wall Indirect Water Heater
SKU: LS-SW-2-40R-L
Laars
SKU: LS-SW-2-40R-L
Brand: Laars
$2,425.92 each
In Stock
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Product Image of 48 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-50R-L
$1,918.26 each
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Product Image of SBB 300 Plus 81 Gallon DHW Indirect Water Heater Tank
$2,702.38 each
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Product Image of 41 Gallon CH-41ZDW BoilerMate Champion Series Indirect-Fired Water Heater
$2,319.23 each
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Product Image of SBB 600 Plus 163 Gallon DHW Indirect Water Heater Tank
$4,332.84 each
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Product Image of Aqua-Pro 30 Indirect Water Heater
Aqua-Pro 30 Indirect Water Heater
SKU: 633-500-200
Weil-McLain
SKU: 633-500-200
Brand: Weil-McLain
$1,745.00 each
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Product Image of 48 Gallon - Residential PowerStor2 Series Double Wall Energy Saver Indirect Water Heater
$2,064.43 each
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Product Image of 40 Gallon, Glass Lined GIT040 Indirect Water Heater
$1,384.33 each
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Product Image of 79 Gallon LT-300 Indirect Fired Water Heater
$3,690.60 each
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Product Image of 67 Gallon, Squire SIT065 Indirect Water Heater (Double Wall)
$3,322.61 each
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Product Image of Aqua-Plus 105 Pewter Indirect Water Heater
$4,271.53 each
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Product Image of 75 Gallon - Residential PowerStor2 Series Double Wall Energy Saver Indirect Water Heater
$3,082.47 each
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Product Image of 116 Gallon - Residential PowerStor Series Single Wall Indirect Water Heater
$2,582.77 each
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Product Image of 27 Gallon, Squire SIT030 Indirect Water Heater
$1,645.30 each
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Product Image of SB 400 E 106 Gallon Single Coil DHW Indirect Water Heater Tank
$2,631.35 each
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Product Image of AL119CLT Alliance Thermoplastic-Lined Indirect Water Heater
$3,484.10 each
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Product Image of 81 Gallon, Squire SET080 Stainless Steel Solar Electric Water Heater
$3,894.38 each
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Product Image of 60 Gallon WHS-60ZDW BoilerMate Premier Series Indirect-Fired Water Heater
$3,749.20 each
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Product Image of 60 Gallon WHS-60ZC BoilerMate Commercial Indirect-Fired Water Heater
$3,829.14 each
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Product Image of 80 Gallon HM-80ZDW HydroMax Indirect-Fired Water Heater (Top Mechanical)
$3,758.00 each
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Product Image of Universal 10K Sensor Kit for HydroMax Water Heaters
$52.63 each
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Product Image of PP-30-LB, 22 Gallon Peerless Partner Single Wall Indirect Water Heater (Low Boy)
$2,822.11 each
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Product Image of 53 Gallon LT-200 Indirect Fired Water Heater
53 Gallon LT-200 Indirect Fired Water Heater
SKU: 9-200LT
Buderus
SKU: 9-200LT
Brand: Buderus
(1)
$2,715.36 each
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More About Indirect Water Heaters

Indirect Water Heaters use a boiler to heat domestic hot water. Instead of relying on their own burner, they pull heat from your existing system. That means fewer moving parts, lower energy bills, and plenty of hot water when you need it. 

Key Features
  • Boiler-Powered Performance - Taps into your boiler for reliable water heating 
  • Fast Recovery - Internal coil design reheats water quickly between uses 
  • Insulated Tank - Keeps heat in, cuts standby loss 
  • Corrosion Resistance - Stainless or glass-lined tanks stand up to wear 
  • No Open Flame - Quieter and safer than traditional tank heaters
Real-World Benefits
  • Pairs easily with existing hydronic systems 
  • Handles multiple bathrooms and appliances at once 
  • Lowers fuel usage by eliminating a second burner 
  • Operates quietly with fewer mechanical parts 
  • Install & Maintenance Tips 
  • Place near boiler to minimize pipe runs and heat loss 
  • Flush coil once a year to remove buildup 
  • Add a mixing valve to regulate output temps safely
FAQs

Q: Can this replace my current gas water heater? 

 A: Yes, if you already have a boiler system, an indirect heater is a great upgrade.. 

Q: Does it need electricity?  

 A: Just for the circulator pump, no heating element inside. 

Q: How long do indirect heaters last? 

 A: With routine flushing and maintenance, 15 to 20 years is common. 

Q: Do I need a separate pump? 

 A: Yes, to circulate boiler water through the tank coil. 

Q: Is it good for radiant heat systems? 

 A: Absolutely, it integrates well with radiant and baseboard setups.