Amtrol: Boilermate Indirect-Fired Water Heaters

Amtrol invented the first water heater, using the existing energy in a boiler to minimize fuel use and maximize hot water output. More efficient than conventional gas or electric water heaters, BoilerMate provides faster recovery, requires no separate flue and features a replaceable heating element. Compared to tankless wall-hung water heaters, BoilerMate provides built-in storage for high demand requirements or when power outages occur and a faster payback. BoilerMate is available in top or bottom connection models for maximum installation flexibility.

Boilermate Indirect-Fired Water Heater Features

Bimodal HPDE Poly Bottle

  • Corrosion-Proof Material is Impervious to Chlorides, Scale and Aggressive Water; No Anode Rod Required.
  • Provides Clean, Fresh Water.
  • Advanced, High-Temp Polymer Rated to 180º F.

Energy Efficient Insulation

  • Unique, Molded Insulation Eliminates Gaps to Minimize Heat Loss.
  • Form Fitted to Bottle and Outer Shell for Enhanced Efficiency.

Deep Drawn Pressure Shell

  • Twice the Strength of Traditional Construction.
  • Precision Welded with Rugged Steel Base.
  • High Gloss Finish; Available in Blue, Red or Gray.

Top or Bottom Mount Heat Exchanger

  • Finned Design for Effective Heat Transfer.
  • Removable for Cleaning and Service.
  • Affordable Double Wall Option for Regional Code Compliance.

Choice of Mechanical or Digital Temperature Control

  • Mechanical Aquastat is Simple and Reliable.
  • Digital Control Provides Electronic Accuracy and No External Relays


Boilermate Indirect-Fired Water Heater Specifications





  • Shell: Deep Drawn Steel
  • Bottle: Bimodal, High Density Polyethylene (HDPE)
  • Insulation: Molded Urethane Fits Bottle and Outer Shell
  • Heat Exchanger: Finned Design; Top or Bottom Mount
  • Stand: Steel
  • Finish: High Gloss Blue, Red or Gray
  • Control: Mechanical or Digital
  • Double Wall: Available
  • T&P; Drain Valve: Included Standard


  • Max. Operating Temperature: 150º F (66º C)
  • Max. Working Pressure: 150 PSIG (10.3 bar)
  • Warranty: 6-Year Limited; Limited Lifetime Upgrade Available


  • Provides hot water using boiler energy as the source.
  • Available in 41 and 80 gallon sizes.
  • Removable coil for easy cleaning and service
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