Welcome to Plbg.com Welcome to the Popular Plumbing, Kitchen, Bath Advice Site
  We're sponsored by:
The Leading Online Plumbing Supplier Since 1995
www.PlumbingForum.com
THE Dynamic Plumbing, Kitchen and Bath, Information, Advice and Sharing Forum


Over 520,000 Posts in over 150k Threads

The most popular positive STRICTLY PLUMBING INFORMATION SHARING FORUM board on the Net. Ask any toilet, sink, faucet, pump, water quality and other plumbing related questions here. Plumbing professional and DIY tips, tricks, shortcuts, remodeling, plumbing advice forum and blog. Please refrain from asking business, pricing, contractor referrals, legal or any other non strictly plumbing related questions and we also ask for only positive comments and no advertising. 

New TopicSearchLog In Newest Messages
 Shower has hot water, then it turns cold really fast.
Author: Anonymous User

We live in a six year old apartment complex, where the maintenance guy should fix things like this, but he has exactly one year of experience in maintenance in general, which plumbing is only a small part of. If I can tell him what to do, he'll probably do it, though.

When we first moved in in November, the hot water would work everywhere, except in the bath/shower. It would be hot for a while (30 seconds to 5 minutes, depending on how cold it was outside), then it would go cold (this temperature varied). If we turned on any faucet while the water in the shower was cold, they would still be hot.

We noticed that it worked when the dishwasher, washing machine, or heat was on (the heat works from the water heater, somehow). He came and drained it a few times, until I called the corporate office and complained. They responded by replacing the water heater with a new one.

With a new water heater, it seemed to work better for a while (the rest of the winter, basically), but it stopped working as well when the heat wasn't on all the time. Now, the water in the shower gets cold pretty fast again (about the same rate), but running the dishwasher or the washing machine won't help anymore, and neither will turning the heat on (even though it's warm).

Now, when I run the water in the shower/bath, it will work for about 30 seconds, to 5 or so minutes, (it's as hot as it should be, depending on how we adjust the heat) then it will start cooling down. If I shut it off and wait for a bit before turning it back on, it will be hot again for a shorter period of time (10-15 seconds), then get cold again. When it's cold, every other faucet in the house is also cold.

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: dlh (TX)

it sounds like your balancing spool isnt working properly

- - - - - - -

PLUMBERS "Protecting The Health Of The Nation"

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: Anonymous User

Where is the balancing spool found?

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: hj (AZ)

Inside the shower valve, but when it doesn't work properly, you usually only get hot OR cold water, very seldom warm, nor does it fluctuate. Without actually seeing your building and doing my own tests, I cannot tell you which of several possibilities you have.

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: Anonymous User

I guess I have to insist on a real plumber to come fix it then, rather than the maintenance guy who admitted he doesn't know much about anything.

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: RWP (SD)

If there is a recirculating system on the hot water the check valve could be bad. This is a system that has a thermostatic controlled circulating pump to keep hot water in the piping at all times. The check valve only allows on way circulation. If it is bad then cold water can and does reverse flow and thus you get cold water out of the hot water faucet. It will happen even with the pump working.

- - - - - - - - - -

Retired after 50 years of plumbing and heating.

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: Wheelchair (IL)

Do you have a single handle shower valve or separate handles for Hot n Cold?
Best Wishes

Reply To This Message

 Re: Shower has hot water, then it turns cold really fast.
Author: hj (AZ)

In some mulitfamily buildings, the cause of your problem could be in one of the other units, which is why you need an "expert" who can diagnose the symptoms.

Reply To This Message


Note: Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.

Warning: Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.

Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.

Plbg.com is also not a place to ask radiant heating (try Heatinghelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Click here to view our old forum messages



to: Contact Us
to: Plumbing Manufacturers Address Directory
to: Plumbing Links Site
to: How to show an image
to: theplumber.com
to: Plbg Statistics
to: our FAQ's
to: Advisor List
to: Common Plumbing Terms
We're sponsored by:
The Leading Online Plumbing Supplier Since 1995
  We're sponsored by:
The Leading Online Plumbing Supplier Since 1995

Copyright© 2014 Plbg.com. All Rights Reserved.