Air Source Heat Pump Water Heaters
In this presentation, Gary Klein shares important information about air source heat pump water heaters (HPWH), with particular attention paid to where the warm air comes ...
A Cautionary Tale for Replacing Boilers on Hot-Water Heating Systems
In this excerpt from his Classic Hydronics seminar, Dan Holohan tells a story about a mansion that had two Ideal Redflash boilers, each with a rating of 500,000 Btuhs. Dan talks about the importance of doing a heat-loss calculation for boiler replacement jobs, why this house (with only a heat-loss calculation of 375,000 Btuhs) had two giant boilers, and how they solved the problem with primary-secondary pumping.
Want to learn more? Read Dan Holohan’s book Classic Hydronics: How to Get the Most From Those Older Hot-Water Heating Systems.
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