John Siegenthaler: Cascading heat pumps Electrically-powered heat pumps will continue to gain market share. John Siegenthaler, P.E. January 23, 2021 Heat pumps are incredibly useful devices. Read More
PHVAC experts look ahead in 2021 Market predictions and expected trends for the year ahead. Nicole Krawcke January 4, 2021 The dawning of a new year has PHVAC industry experts cautiously optimistic about new opportunities that lie ahead in 2021. Read More
John Siegenthaler: Chump change The minuscule cost of operating a well-designed hydronic distribution system. John Siegenthaler, P.E. December 22, 2020 Hydronic heating professionals often promote the concept that current generation mod/con boilers can operate with AFUEs in the range of 95% and above. Read More
John Siegenthaler: Combining heat pumps with buffer tanks Consider a buffer tank between the heat source and distribution system. John Siegenthaler, P.E. November 25, 2020 Whenever a hydronic system is divided into several zones, it’s worth considering a buffer tank between the heat source and distribution system. Read More
Upcoming webinar with A.O. Smith Intro to heat pump water heaters. October 13, 2020 Isaac Wilson, national specialty commercial manager with A.O. Smith will be teaching the webinar on October 20 and 2 p.m. EDT.Read More
Lochinvar commercial heat pumps August 14, 2020 Lochinvar recently launched 20 new commercial heat pump models ranging from 25,000 to 250,000 Btu/h, and with modular installation capabilities up to 2 million Btu/h. Read More
John Siegenthaler: Have a problem — need a solution Our industry needs a better way to insulate circulator volutes. John Siegenthaler, P.E. May 21, 2020 Part of running any business is looking ahead and trying to read the “tea leaves” that are relevant to that business. Read More
The Glitch and Fix: Hardware heavy May 15, 2020 A client asks a heating contractor to set up a floor heating system for a new 7,500 square foot machine shop.Read More
John Siegenthaler: Three inputs, one output Multiple strategies for heating domestic water. John Siegenthaler, P.E. March 5, 2020 I recently designed a system for my daughter’s new home with a water-to-water geothermal heat pump as its main heat source. Read More
The Glitch and Fix: Mixed mode January 27, 2020 An installer is trying to wire up a two-stage heat pump for heating and cooling operation.Read More