Bob and Tim were on their way to a service call on a heat pump. The homeowners are complaining about noise at the outdoor unit. When Bob and Tim arrived, the homeowners explained that the heat pump for upstairs is beside the house in a wooded area. It is under their upstairs bedroom window and it became loud last night.
HVAC Equipment Shipments Increase Almost 30 Percent
November 20, 2014
United States shipments of central air conditioners and air-source heat pumps totaled 539,628 units in September 2014, up 29.7 percent from 416,179 units shipped in September 2013, according to the latest statistics from the Air-Conditioning, Heating, and Refrigeration Institute (AHRI).
In an effort to make it easier for technicians to install, service, diagnose, and troubleshoot HVACR equipment, ACCA’s Board of Directors adopted a motion “to implore the manufacturers of HVAC equipment to develop and implement open [nonproprietary], universal, onboard diagnostic [OBD] communication protocols.”
Working with Mechanical Solutions Inc. (MSI), a small business in New Jersey, the U.S. Department of Energy’s (DOE’s) Building Technologies Office has found a potential solution to allow for cold climate heat pumps: a “supercharger” that enables heat pumps to efficiently operate in the coldest U.S. climates, with zero backup heat.