The iconic Spectrum Center in Charlotte, North Carolina, plays host to the National Basketball Association’s Charlotte Hornets, as well as various events and concerts each year.

In last month’s column, I presented a “template” for a system that provides space heating, cooling and domestic water heating using a cold climate air-to-water heat pump as the primary heat source, and the sole source of chilled water for cooling. 

For decades, fossil-fueled boilers have dominated the market for hydronic heat sources.

Embassy Suites in Portland, Oregon, consistently wins high reviews online — many of which give the enthusiastic thumbs-up for the 276-room historic hotel, an architectural masterpiece built in 1912.  

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

Although I’ve worked with hydronic heating for four decades, and designed systems around just about every possible heat source, I would be hard pressed to predict what might be available as hydronic heat sources 25 years from now.  

A commonality among all renewable energy heat sources is that they perform best when coupled to low-temperature hydronic distribution systems. 

The geothermal heat pump market is headed for another strong year in 2019. The 30% uncapped federal income tax credit on EnergyStar-rated geothermal heat pumps remains in full effect.

South-facing walls in cold climates offer advantages.

The temperature of the thermal storage tank can vary over a wide range.