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

Recent Posts

CB Releases Hydronic Condensing Boiler Animations

hydronic boiler animation

Cleaver-Brooks releases hydronic boiler animations, highlighting ClearFire boilers, skids and Alufer firetube technology. Product animations include: • Hydronic Skid Systems, which have variable flow primary design for maximum operating efficiency and lower total cost of ownership. • ClearFire Condensing Boilers, which have high mass, firetube design for variable flow primary systems, include Alufer technology for...

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Total System Efficiency with Condensing Boilers

Condensing Boilers

In condensing boilers, there is a direct correlation between increasing condensation of the flue gas and boiler efficiency gains. Boilers are closed pressure vessels that are used to heat fluids -- either water or steam. They range in size, fluid to be heated, temperature of fluid and design configurations. This paper is the first in...

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Gas Technology: Condensing Hydronic Boilers

hydronic boilers

The key to 99% efficiency is having incoming feedwater below 140° F and modulating the boiler — or having sufficient redundancy to achieve the “sweet spot.” Getting the most for your energy dollar It’s a clever idea. Condensing hydronic boilers can operate at efficiencies in the mid‐90s and above. The key to these fantastic efficiencies...

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Effects of Ultra-High Turndown in Hydronic Boilers

Hydronic Boilers

Today, hydronic boilers are producing greater efficiencies than previously thought possible — all due to the advancements of condensing technology. It is the science behind condensing that many people do not take the time to understand, which can lead to misunderstandings and the perpetuation of myths. One of the largest areas of confusion concerns high...

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SJVAPCD Rules 4305 through 4308, 4320 and 4351

SJVAPCD Rules

SJVAPCD Rules 4305 through 4308, 4320 and 4351 limit the emissions of NOx and CO from boilers, steam generators and process heaters. The San Joaquin Valley Air Pollution Control District is a public health agency whose mission is to improve the health and quality of life for all Central Valley residents through efficient, effective and...

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