24/7 Emergency Service

                              WA# NWINDMI062BE  OR CCB#  96672  ID#  RCE-17032  CA#  726315  NV#  0062228  DUNS#  82-513-4612

​​​​Main Office:  (360) 256-0923

Fax:  (360) 256-9104
2911 NE 109th ave.  Vancouver, WA 98682
  • 30, 100 & 150 PSI Design Options
  • 80 – 88% Efficiency
  • All Steel Construction
  • Thermal Shock Proof Resistance
  • Water Surrounded Cylindrical Furnace for Highest Heat Transfer
  • Capacities: 5 – 86 BHP
  • Optional Tankless Coil for Indirect Loads
  • Fuels: Gas • Oil • Combination Gas/Oil
  • Ideal for Multiple Boiler Installations
  • Package with Aldrich Boiler Management Panel for Highest System Efficiency
  • Ease of Maintenance, Access to Firetubes

   A3W :  17-110 BHP

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

 A3W4 :  15-100 BHP  

   A3SL :  135-200 BHP

Water Boilers 

Classic Series Three Pass Firetube

​​AVR • AVW • K • L

​Capacities: 91 – 124 BHP

Inputs from 3,685,000 to 4,990,000 BTUH

Outputs from 3,060,000 to 4,140,000 BTUH


​Capacities: 15 – 100 BHP

Inputs from 600,000 to 4,035,000 BTUH

Outputs from 500,000 to 3,350,000 BTUH

  • 30, 40 & 80 PSI Design Options
  • 83 – 88% Efficiency
  • Inventor of the “Scotch Box” Design
  • “U-Type” Flex Joint
  • All Steel Construction
  • Thermal Shock Proof Resistance
  • Water Surrounded Cylindrical Furnace for Highest Heat Transfer
  • Water Cooled Reversing Chamber 4-Sided Wetback
  • Capacities: 12 – 200 BHP
  • Models up to 120 BHP Fit Through 36” Doorway
  • Fuels: Gas • Oil • Combination Gas/Oil • Digester Gas
  • Structural Channel Base
  • Optional Field Erect Boilers
  • Ideal for Multiple Boiler Installations
  • Package with Aldrich Boiler Management Panel for Highest System Efficiency
  • Ease of Maintenance, Access to Firetubes

​Capacities: 135 – 200 BHP

Inputs from 5,450,000 to 8,100,000 BTUH

Outputs from 4,520,000 to 6,695,000 BTUH


Classic Series Three Pass Firetube Water Boilers


​Capacities: 17 – 110 BHP

Inputs from 695,000 to 4,443,000 BTUH

Outputs from 580,000 to 3,680,000 BTUH


Classic Series – Horizontal Three Pass Firetube Water Boilers & Vertical Firetube Water Boilers

  • Modified Three-Pass Scotch Marine “Scotch Box” Boiler
  • Fuels: Gas • Oil • Combination Gas/Oil • Digester Gas
  • 30, 40 or 80 PSI Design
  • 83 – 88% Efficiency
  • “U-Type” Flex Joint
  • Thermal Shock Resistance
  • All Welded Construction
  • Water Surrounded Cylindrical Furnace For Highest Heat Transfer
  • Water Cooled Reversing Chamber 4-Sided Wetback
  • Insulated Boiler with 18 Gauge Boiler Jacket

​Capacities: 12 – 80 BHP

Inputs from 480,000 to 3,220,000 BTUH

Outputs from 400,000 to 2,680,000 BTUH


   A3WHC :  91-124 BHP

   A3W5 :  12-80 BHP