Blog, Technical Resources, Videos, Case Studies and Documentaries

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

510-784-0110Contact Us

Recent Posts

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...

Read More  ›

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...

Read More  ›

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...

Read More  ›

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...

Read More  ›

BAAQMD Regulation 9 Rule 7

Bay Area Air Quality Management District

BAAQMD Regulation 9 Rule 7 limits the permitted emissions of NOx and CO from boilers, steam generators and process heaters.   The Bay Area Air Quality Management District (BAAQMD) develops regulations based on the measures identified in its Clean Air Plan. Air District staff develop new rules to reduce emissions in order to improve public...

Read More  ›