Raytherm Indoor Pool Heaters, 2100-4001

The Raytherm pool heater model 2100-4001 will be discontinued effective May 31, 2021
Raypak's Raytherm® line of atmospheric pool heaters offers rugged construction and simple operation at low cost.

Raytherm Indoor Pool Heaters, 2100-4001

 Model Number
Full Input BTUH
Indoor Stack Dia.
Bypass Options
H-Style Bypass None (Field-Supplied) CWR
 P-2100 2,100,000
24" STD Yes Yes
 P-2500 2,499,000
26" STD Yes Yes
 P-3001 3,000,000
28" STD Yes Yes
 P-3500 3,500,000
30" STD Yes Yes
 P-4001 4,000,000
32" STD
Yes Yes

  • Rugged All-Brass Headers
    Resist corrosion, and are easily removed for inspection or service. AB 1953 Low-lead Compliant.
  • Cupro-nickel Finned-tube Heat Exchanger
    Single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.  Cupro-nickel tubes provide superior chemical resistance over copper for tough commercial installations.
  • Certified to ANSI Z21.56
  • On-off Operation
  • Corrosion Resistant Steel
    Fittings are brush galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.
  • 24-Volt Controls
    Are totally enclosed for protection. Cover is easily removed for inspection and service.
  • Floating Return Header
    Immunizes heat exchanger to thermal shock.
  • Tube Sheet and “O” Ring Construction
      eliminates the repair and maintenance problems associated with rolling tubes directly into a casting.
  • Interlocking Refractory Panels
    Sealed corners reduce radiation losses.
  • Stainless Steel Burners
    Maintain precise combustion burn quietly and won’t clog or corrode.
  • Slide-out Burner Tray
    Allows easy inspection and service.
  • Spark-to-Pilot Ignition
    The most dependable ignition method available.
  • Available for natural gas or propane.




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