In an effort to avoid confusion, please note that the new GMU/V Over the Water Heater, Stud, and Wall Mount Air Handlers are not currently rated with Ameristar. Ameristar ratings with the GMU/V series will not be in place until the start of the 2020 season.
For the 2019 season, you must continue to use the TMM4 and TMM5 air handlers for any Ameristar air conditioning or heat pump system ratings combinations.
Please continue to order the TMM4 and TMM5 air handlers to cover your needs for Ameristar matched systems during this time. In addition, due to the lead times required for TMM4/TMM5 products, make sure to let us know if you have any large jobs forthcoming—your assistance will help ensure that we have the inventory available.