Jump to content

supply line size for water heater


blazenut
 Share

Recommended Posts

I was at a house today, rancher-only about 1100 square feet, that had 3/4" copper coming in from the street, and tied directly to a 1/2" line soon after entering the foundation. The rest of the home was all 1/2" all over. Two full bathrooms, kitchen and laundry. The water heater was also supplied with 1/2". The home was on a well a few years ago and when the plumbers hooked it up to public they just tied to the existing 1/2". Would you report that baths should be supplied with 3/4" and each fixture branch can be 1/2", or just mention that pressure may be an issue? (water pressure was acceptable throughout) What about the water heater? Thoughts? Thanks in advance.

Link to comment
Share on other sites

I've seen it multiple times on older homes that have been remodeled and I always note it, even if it's a one bath home. Even if all the flow with multiple fixtures on at once seems adequate, I still put it in as an FYI. I tell them that if they switch fixtures (i.e. from low flow to standard flow), have multiple things operating at once (such as a washing machine, dishwasher, and shower going) or as it ages and buildup occurs, flow could become reduced, and that the only repair would be replacing the 1/2" with 3/4" for the main lines, with 1/2" branches to fixtures.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...