The UK has received a major energy boost as a company is testing out a roof-mounted air source heat pump in a first-of-its-kind pilot project. Bellway, a residential property developer and ...

The Xcelon system rooftop make-up air unit combines condensing boiler technology with air distribution and heat recovery methods for efficiency levels up to 98 percent. Xcelon’s unique engineering ...

The Department of Energy (DOE) is looking at new efficiency standards for rooftop air conditioning and heating units that are commonly used on apartment buildings. {mosads}DOE’s Office of Energy ...

In this column, I will describe the “issue” disclosed through analysis of the trend graph included in my April 2012 “Commissioning” column. I will also introduce a new system, show its trend graph, ...