For More Than Six Decades, Precision Boilers has manufactured a wide range of electric and gas fired steam and hot water boilers. 



Take a close look at the Precision’s COMPAC Electric Hot Water Boiler. This electric boiler has been designed to solve a number of problems. It is physically small enough to fit through most existing doorways, a feature that is most convenient for the replacement market.

This small footprint can be deceiving; look closely. Although compac in dimension, this unit is large in performance producing up to 720KW (2,457,269 btu/hr). Look again, small footprint, environmentally friendly and super efficient.

Standard Features and Equipment 

  • Available Ratings: 15 KW to 720 KW 
  • ASME National Board Registered Pressure Vessel (150 PSI / 250 F)
  • Heavy Duty Steel Boiler Vessel Housing
  • Four Inch Fiberglass Insulation
  • Three Inch NPT Inlet and Outlet
  • ASME Safety Relief Valve
  • Pressure Gauge w/ Cock
  • Drain Valve
  • Incoloy-Sheathed Elements
  • Construction per NEC & UL, with UL Label
  • Electronic Digital Temperature Readout (except 1 & 2 Step Models)
  • Integral Electric Control Panel with Key-Locked Door
  • Internal Branch Circuit Fusing
  • Magnetic Contactors Rated 500,000 Cycles
  • Main Supply Circuit Lugs
  • 120 Volt Fused Control Transformer
  • On/Off Switch with Pilot Light
  • Preheat Switch (above 240 KW) with Pilot Light
  • Status Pilot Light for each Stage/Step
  • Probe-type Low Water Cut-Off Note: Manual Reset, Test & Pilot Light Provided on Models > 117 KW
  • Two Adjustable High Limit Cutouts: (1) Auto Reset(1) Manual Reset  Note:Manual Reset Provided Only on Models > 2 Stages.
  • Automatic Temperature Control via:
  • On-Off Temperature Switches (1 & 2 Step Models)
  • Electronic Multi-Stage Control (3 & 4 Step Models)
  • Proportional Progressive Sequence Step Control (Models > 4 Steps)

Optional Equipment and Accessories

  • Main Power Disconnect
  • Fused Disconnect or Automatic Breaker
  • Shunt Trip Circuit Interrupter
  • Ground Fault Detection System
  • Ammeter (1 or 3 phase)
  • Voltmeter (1 or 3 phase)
  • Watt-hour Meter
  • Time Clock (24 Hour or 7 Day)
  • Alarm Bell or Buzzer with Silencing Switch
  • Safety Door Interlock
  • Low Temperature Switch/Alarm
  • Building Automation System Interface
  • Outdoor Reset Control
  • Flow Switch (Installed)
  • Manual Limit Toggle Switches (one per step)
  • High/Low Pressure Switches/Alarms
  • Auxiliary Low Water Cut-Off (Float or Probe-type) (Auxiliary Probe-type Standard on Models > 117 KW)
  • Manual Reset Low Water Cut-Off
  • Temperature Gauge (3” / Installed)
  • 4” Connection Size (Models “PCW2” & Above Only)
  • Proportional Step Control (For 3 or 4 Step Models)
  • Linear Sequence Step Control
  • Stainless Steel Construction (210 F Max)

P. C. McKenzie Company congratulates Precision Boiler for celebrating their 60th anniversary.

P.C. McKenzie Company
P.O. Box 112638
Pittsburgh, PA 15241
Fax: 412-257-8890
Phone: 412-257-8866
P.C. McKenzie Company
1365 McLaughlin Run Road
Pittsburgh, PA 15241