I put an RV500 in the 2012 25FB and just loved it! You do have to open the wall a bit to fit. The RV500 was great. I put an RV550 in our 2015 Bunk before we took our first trip. The RV550 is a big disappointment. You have to constantly adjust the external temp control depending on outside temps. We also could not get it to adjust to lower temps when showering until I called Precision Temp and complained. They said to turn the sink hot water on to a pencil size stream which allows us to regulate the temps pretty good. I was offered to test a new pre-production unit that is supposed to be more like the old RV500 but decided the sink on trick worked well enough. I would not trailer without an instant on constant hot water system. Check with Precision Temp and make sure you get the latest model not an RV550. You will love it.
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2022 25RBT FC, 50A Dual AC, Awning Package, 270W Solar, Convection Microwave. Ceramic Coat, Grand Lounge, 3" Lift, 16" Michelin RIBs, Multiplus II, Battleborn 400A, MPPT 100/50, Orion-TR 30, EasyStart (2), Easy Touch, AirKrafters jenRack, Onan 2500i, Truma Aquago Confort, Starlink, Pepwave, Parsec
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