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Home » heat pump systems

Articles Tagged with ''heat pump systems''

01 PME 0923 CLMN John Siegenthaler
Renewable Heating Design | John Siegenthaler

Details for piping multiple hydronic heat pumps

Expanded possibilities
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
August 31, 2023

Multiple boiler systems have been used for decades. They allow full heating capacity to be delivered when necessary, while also retaining high efficiency under partial load conditions compared to a single large boiler.


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hydronic heating system

John Siegenthaler: Adding a heat pump

Several possible approaches.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
January 31, 2023

Many legacy hydronic heating systems use a fossil fuel boiler to supply fin-tube baseboard heat emitters in some areas of a building and lower-temperature radiant panels in other areas. 


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JohnsonControls logo.jpg

Johnson Controls acquires Hybrid Energy

January 30, 2023

The technology of Hybrid Energy will provide new, cost-effective solutions to customers while addressing decarbonization and sustainability efforts in Europe and beyond.


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John Siegenthaler: Renewable Heating Design

John Siegenthaler: A simple way to set up lead/lag heat sources

Who’s on first?
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
February 27, 2020

I’m fortunate to be living next door to a very unique hydronic heating/cooling system.


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John Siegenthaler: Renewable Heating Design

Water-To-Water Heat Pumps

John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
September 28, 2000
The ability to function as both a heating and cooling system is the biggest attraction of heat pump systems, especially in mid- to lower latitudes.
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