NATE Heat Pump Install case studies
NATE Heat Pump Install · Put your knowledge to work in context.
The NATE Heat Pump Installation certification is a specialty credential for technicians who install air-source heat pumps, including split and packaged systems in residential and light commercial work. It signals that a technician can take a job from site survey through commissioning: matching equipment to a load calculation, running and brazing refrigerant lines, evacuating and charging to weight or subcooling/superheat targets, setting airflow, wiring low-voltage controls, and verifying performance before handing the system to the homeowner. The NATE Heat Pump Install case studies are 5 cases and about 3,053 words.
1Sizing a Replacement Heat Pump in a House With Marginal Ducts
A 2,400 ft² two-story house built in 1998 has a calculated heat loss of 48,000 Btu/h at a 24°F outdoor design temperature and a calculated cooling load of 31,000 Btu/h total, including 8,200 Btu/h latent. The existing system is a 3-ton, 10 SEER air conditioner paired with an 80% gas furnace.
680 words, about 3 min2100 A Service, 10 kW Strip, and a Thermostat With No C Wire
An 1,800 ft² ranch has a 100 A, 20-space panel with four open spaces. The existing 2.5-ton air conditioner is being replaced with a 3-ton heat pump whose nameplate lists a minimum circuit ampacity of 21 A and a maximum overcurrent protection of 35 A.
652 words, about 3 min3Reusing a 60 ft R-22 Line Set for a New R-410A Heat Pump
A 3-ton R-410A heat pump replaces a 3-ton R-22 air conditioner. The existing line set is 60 ft long with a 1/4 in.
582 words, about 3 min4Outdoor Unit Under a Deck With a Decorative Louvered Enclosure
A 3-ton cold-climate heat pump is being installed on the rear wall of a duplex. The chosen spot is under a pressure-treated deck that is 7 ft above grade, with the unit's back 10 in.
589 words, about 3 min5New Heat Pump Runs Constantly and Does Not Dehumidify
A newly installed 3-ton variable-speed heat pump is being commissioned in cooling mode. Outdoor ambient is 95°F; indoor return air is 75°F dry bulb and 63°F wet bulb.
550 words, about 3 min