While traditional hospital HVAC systems often consist of chillers and boilers, other types of equipment are becoming more widely accepted in the health care market, including variable refrigerant flow (VRF) systems, air curtains, and geothermal heat pumps. 

According to the experts, the most common mistake made by designers and installers is failing to calculate the correct heat load. 

As radiant's benefits are becoming more widely recognized, manufacturers are rolling out new products designed to lower labor costs and make radiant more affordable and accessible.

It takes a special set of skills and passion for a contractor to become an expert in hydronic systems, and once these guys get started talking about their work, it’s hard to get them to stop.

I was having a conversation the other day with Ara Marcus Daniels, author of many plumbing books, who is quite dead. I do such things because I have time on my hands and not much of a life.

HVAC manufacturers share their latest heating products — including photos, specifications, warranty info, and more — in this detailed showcase.

The combined cost of hydronic radiant panel heating, along with a separate central cooling system, often strains the construction budget to a point where something has to go, and that something is usually the radiant heating option. It gets trumped by a lower-cost forced-air system that delivers both heating and cooling, albeit often at reduced comfort.

These custom mechanical boards are designed for hydronic radiant heating systems. Each board comes pre-piped and pre-wired with a custom drawing for fast and easy installation. Just mount it to the wall and connect it to the system.

The natural gas or LP-fired Mascot LX features a Laars heat exchanger and offers 95 percent efficiency, full modulation, and a plentiful supply of domestic hot water on combination units.

Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.