Installing Heat Pump Water Heater Outside
I would like to get a Heat Pump Water heater for my new ADU. However, they all seem too tall to place in the small attic we have. Most units are 60” tall or more. So, I am wondering about placing it outside. I know there a split systems where just the compressor is outside, but I’m considering the feasibility of placing the whole unit outside. Are there units that can take the rain & the potential rust issues, or would these need to be in a doghouse? As an Architect, I can imagine a huge future need to replace lots of exterior tankless gas units in the future too. It would be hard for many people to give up valuable interior space to just upgrade their water heater.
So really 2 questions:
1. Are there a low profile versions for attics?
2. Are there better brands, or best practices for placing one outside?
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