There is a growing interest in adding air-to-water heat pumps to existing hydronic heating systems. While I support their use, I do not recommend replacing a perfectly good cast-iron boiler that still has a long service life.

The installer is tasked with setting up a three-zone radiant floor heating system using a 5-ton geothermal heat pump and a mod/con boiler, connected through a primary-secondary system with closely spaced tees. The system includes 4 earth loops of 1” HDPE tubing, each 500 feet long, supplying the heat pump, and features underfloor tubing with aluminum plates.

The 20 products highlighted here have earned the distinction of being PM Engineer’s Top Products of 2023 based on the number of pageviews on www.pmengineer.com. Congratulations to those products on this year’s list.

The 20 products highlighted here have earned the distinction of being Plumbing & Mechanical’s Top Products of 2023 based on the number of pageviews on www.pmmag.com. Congratulations to those products on this year’s list.

I try to be on time for appointments and call ahead if I'll be late. I pay attention to my surroundings and take notes on important details. It's important to silence your phone during meetings. Door widths and route planning are important when removing or installing equipment.

While electrification can help meet decarbonization goals, high-efficiency condensing boilers are also a possible solution to bridge the gap between where we are now and where we are heading.

Electro Industries is a manufacturer of electric boilers, air-to-water heat pump technology, electric duct heaters and controls. 

A hydronics newbie decides that he can eliminate the temperature drop effect by putting all three supply-side tees upstream of all three return-side tees. If you don’t think it will work, what would you do to change it?

Here’s a countdown of the top 10 articles you read the most in 2023 based on the number of unique pageviews on www.pmmag.com. 

The single-phase Ambient Electric Boiler is an ultra-compact, wall-hung boiler is available in three capacities.