Scott D. Plumber
In the Trades
Don't know if this has come up here yet but thought I'd pass it on. Here in VA many inspectors are now requiring drain pans for tankless water heaters and referring to the Current International plumbing code and the IBC. They are also insisting on them due to installation instructions for major models calling for them when installed in a finished space.
They will let you put one on the floor sometimes and other make you have one on the wall under the unit like “The Wall Saverâ€. You can make your own if you want. There are a couple out I think. This one's here www.thewallsaver.com
I’ve seen enough of these to know what happens when the unit dies and guess what?...water is coming out! If you put them in an attic, interior closet, or other finished space, you better have a pan under it. They don’t put that in the instructions because they like to use ink. Everything dies eventually. Last summer I saw a unit that was in an attic of a rental property. That’s just great until your renter moves out in the winter and you kill the power not thinking about the poor tankless in the attic. When they turned the power back on in the spring…by phone call because they were not living there…no more plaster in most of that house. It had froze and burst. If the power had been left on so the freeze protection system would have worked it would have been fine. (Like it had been for 2 years earlier) They now have a pan, but a bit too late.
Good rule of thumb:
Unfinished basement, garage, outdoor or similar = No Pan
Attic, closet, over a finished space, apartment/condo/Townhouse = PAN!
They will let you put one on the floor sometimes and other make you have one on the wall under the unit like “The Wall Saverâ€. You can make your own if you want. There are a couple out I think. This one's here www.thewallsaver.com
I’ve seen enough of these to know what happens when the unit dies and guess what?...water is coming out! If you put them in an attic, interior closet, or other finished space, you better have a pan under it. They don’t put that in the instructions because they like to use ink. Everything dies eventually. Last summer I saw a unit that was in an attic of a rental property. That’s just great until your renter moves out in the winter and you kill the power not thinking about the poor tankless in the attic. When they turned the power back on in the spring…by phone call because they were not living there…no more plaster in most of that house. It had froze and burst. If the power had been left on so the freeze protection system would have worked it would have been fine. (Like it had been for 2 years earlier) They now have a pan, but a bit too late.
Good rule of thumb:
Unfinished basement, garage, outdoor or similar = No Pan
Attic, closet, over a finished space, apartment/condo/Townhouse = PAN!