SOURCE: Information contained in these graphs are courtesy of the Air-Conditioning, Heating, and Refrigeration Institute (AHRI). Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.
This side discharge, single-stage heat pump was designed for split ducted heating and cooling systems where space constraints make vertical discharge units difficult to install.
The ZQYRA design offers a simplified approach to dedicated outdoor air systems (DOAS) with only basic options. The patented ZQYRA–8 and ZQYRA–12 units combine superior control design with modulating heat pump and enthalpy wheel technology.
The N4H6 Performance 16 heat pump is an energy-efficient, two-stage model, achieving up to 17.5 SEER/13.5 EER cooling efficiency and up to 9.5 HSPF heating efficiency.
The outside temperature was 40°F, not really cold for the season but the humidity was high in the air. Moisture had just seemed to be laying in the air for several days.
Bob and Tim were called to a residence which reported a frozen heat pump. They arrived and talked to the housewife and she said, “My heat pump outdoor unit is a solid block of ice. When I look at my neighbors outdoor heat pumps they don’t look like mine. I think something is not right."
They all went to the window in the dining room and looked down on the heat pump outdoor unit and sure enough it was loaded up with ice.
Bob and Tim are on their first service call for winter. They are at a retail store that has 4 units to heat and cool the store. They are all 15 on heat pumps. One area of the store is not heating or cooling well and during the heating cycle, the heat pump auxiliary heat light is staying all for long lengths of time.
Sales of cooling equipment increased this summer, according to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), whose combined June and July 2017 reports showed that U.S. shipments of central air conditioners and air-source heat pumps were up about 5.7 percent compared to units shipped during the same time frame in 2016.
Like last year, this year’s Heating Showcase is split into two parts — residential and commercial. The residential/light commercial information is published in this issue, and the commercial products will be featured in the Oct. 2 issue. Feature-specific information about each individual product is included as submitted by the manufacturers.