R.F. MacDonald Co. services and sells boilers, pumps, composites and accessories for commercial and industrial applications.

Thermal Heaters

Thermal Fluid

Vertical Coil

• Modulating Gas, Oil, Dual Fuel
• Low Emissions Gas Burners Available
• Customized Designs and Controls Available
• Minimal Floor Space Required

Vertical Electric

• Low Watt Density Elements
• Low Film Temperatures, Long Element Life
• Class I, Div. I Controls
• Class I, Div. 2 Controls
• Groups C&D of NEC Code Controls
• Customized Heaters Available


• No High Pressure
• Low Film Temperatures, Long Element Life
• Multiple Fuel Options
• Low maintenance