Easy to install, used cpvc for new plumbing connections. 220V was easy to connect for me but you may want to hire an electrician. This unit gets the water nice and hot. The GPM is not enough for me, I should have gone with a more expensive 2 coil unit with more GPM. After 5 miutes or so the coil shuts off and then comes back on, get some cooler water until it kicks back on, sometimes I shut off the water and turn it right back on which restes the flow switch and turns on the coil, instant hot.
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