Retrofitting

Water-source heat pumps (WSHP) are an alternative system for areas without natural gas available. Water-source heat pumps are also popular with public school districts because they’re dependable, have low upkeep, and staff maintenance personnel can […]

“Central plant” is a general term for the building or space accommodating the major pieces of HVAC equipment. The equipment there typically consists of a chiller, boiler, and hot-water heater with their associated pumps and […]

A terminal reheat system has a central air handler that delivers tempered air to all zones. Before the air is delivered to any zone, however, it passes through a terminal unit that heats the air […]

Oil- and gas-fired boilers require copious quantities of oxygen to burn the fuel. Mechanical codes require a large enough opening in the walls of the boiler room to supply this air volume, in addition to […]

A typical central chilled-water system rejects heat returned from the building loop to a cooling tower via the chiller condenser coils. An alternate arrangement is to circulate the warm return-water through a heat-recovery chiller, to […]