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Aldrich Boilers – AVR Series

Capacities: 16 – 86 BHP
Inputs from 600,000 to 3,300,000 BTUH
Outputs from 522,000 to 2,871,000 BTUH
85 – 87% High Efficiency Non-Condensing


Aldrich company manufactures a full array of hydronic boilers for the commercial heating market, including high efficiency condensing boilers, near-condensing boilers designed to improve energy efficiencies, horizontal firetube boilers and vertical firetube boilers.

  • Up to 5:1 Turndown on Gas
  • Full Modulation
  • Linkageless Modulation
  • Fuels: Gas, Oil, Combination Gas/Oil
  • Vertical Firetube Boiler
  • 30, 100, or 150 PSI Design
  • Thermal Shock Proof Design
  • Extra Heavy Tubes for Extended Life
  • Engineered with Water Surrounded Furnace
  • Optional Heat Exchanger (Tankless Coil) for Indirect Loads
  • Insulated Boiler with 18 Gauge Boiler Jacket
  • New Installations
  • Retro-Fit Applications


  • Ideal Boiler to Increase System Efficiency
  • Both New and Retro-fit Applications
  • May Reuse Existing Category III Venting resulting in huge savings when compared to cost of Category IV Venting


  • ASME Code Section IV
  • Thermal Shock Proof Firetube Design
  • Engineered with Water Surrounded Furnace
  • Extra Heavy Tubes for Extended Life
  • Structural Channel Base for Ease of Access & Rigging into Place
  • Optional Heat Exchanger (Tankless Coil) for Indirect Loads. 150 – 2,400 GPH


The forte of Aldrich Company has always been to only manufacture products of the highest quality and design, by using the finest materials available and employing loyal craftsmen with the skills and aptitude necessary towards this end. They outsource no sub-assemblies and They procure only domestic steel and tubing to fabricate their pressure vessels. All Aldrich boilers and water heaters are constructed and stamped to Section IV of the ASME code and registered with the National Board of Pressure Vessel Inspectors.


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