Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


Thread Tools Search this Thread Display Modes
Old 12-04-2012, 06:31 AM   #1
Join Date: Apr 2011
Location: North Carolina, USA
Posts: 2,217
Share |

Exterior expansion tank location

Where is the best location for an expansion tank for a home in Eastern North Carolina, where the plumbing is exterior? i.e. in the crawl space. It's mostly copper piping. None of it is insulated, and it has never burst due to freezing. I don't think pipes would ever freeze since they are so close to the floor in the crawl space. It's an older house with no expansion tank currently installed. The water heater was just removed from under the kitchen cabinet, and a new bigger one installed in an exterior utility room, but no expansion tank yet. The old tank was 38 gal and the new one 50 gal. The newer plumbing that has been done is in PEX (so it won't support the weight of the expansion tank by itself.) The house and utility room are made from cinder block, so it will be a slight hassle to install strapping to hold the tank, but no big deal. Is there any danger of the expansion tank freezing if it's installed in the utility room? How about if it's wrapped in insulation like the new water heater is? Should the expansion tank go under the crawl space instead?
jeffnc is online now   Reply With Quote
Old 12-04-2012, 06:45 AM   #2
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,779

Exterior expansion tank location

The expansion tank can be anywhere with no valves between it and the water heater (or other appliance it is intended to protect). But inspectors prefer to have it above the water heater so they don't have to go looking for it to verify its existence.

An expansion tank should be supported by more than the pipe it is attached to. Should tampering or failure of the air valve result in its becoming waterlogged, it will become heavy.

All plumbing should be protected from freezing. For plumbing in exterior walls or otherwise near exposed areas there should be no building insulation between the pipe and the living space.
The average homeowner who lost his house in the Oklahoma tornadoes should move for good and not rebuild. Too much complexity watchdogging the contractor. Too much a chance to be defrauded.

Last edited by AllanJ; 12-04-2012 at 06:51 AM.
AllanJ is offline   Reply With Quote
Old 12-04-2012, 06:49 AM   #3
Join Date: Apr 2011
Location: North Carolina, USA
Posts: 2,217

Exterior expansion tank location

Yes, I understand it can be anywhere but I was wondering if there is any preference with respect to potential freezing temperatures. Obviously I don't worry about freezing in the water heater in unheated space, but I was wondering about potential freezing in the expansion tank. The crawl space would be a little safer in that regard, but I'd prefer the tank be near the water heater if it's a non-issue.
jeffnc is online now   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Septic tank missing T and badly angled main line? denemante Plumbing 3 11-22-2011 09:29 AM
Toilet Tank Leaking RMCarner Plumbing 17 10-13-2011 07:07 PM
Well Pressure Switch Location dshcs Plumbing 4 02-05-2009 09:04 AM
Toilet jpark Plumbing 18 01-05-2009 07:12 AM
Upstairs toilet pipe noise bliss Plumbing 8 01-10-2008 07:55 AM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.