[Buckeyephan]

Update: Plumber just left. Company sent out a different guy. He checked out many things and of course, couldn’t duplicate the problem. Replaced the toilet innards, including fill/flush valve. No trip or labor charge and $31.95 for parts. Crossing fingers this solves the problem. Thanks for the suggestions. Good to know we weren’t the only ones who have had this problem.

[New Englander]

Originally Posted by Chatbrat

With very stable ground temps and our houses being built on slabs, with no basements the odds of having a toilet hot water mixing valves will be very slim; also, our houses are plumbed using a strict construction format---again go to youtube- and look for sound caused by bad fill valve

That's exactly what I thought.

[NoMoSno]

Originally Posted by New Englander

That's exactly what I thought.

Still required by code.
613.1
http://www.floridabuilding.org/fbc/t...s/Plumbing.pdf

[Chatbrat]

Mixing valves aka anti scald valves are required in showers-ONLY-

and to buckeyephan--hope he got the right toilet

[NoMoSno]

Originally Posted by Chatbrat

Mixing valves aka anti scald valves are required in showers-ONLY-

and to buckeyephan--hope he got the right toilet

Just built a house, they ARE required at the toilet.
(Marion County)

[retiredguy123]

Originally Posted by NoMoSno

Still required by code.
613.1
http://www.floridabuilding.org/fbc/t...s/Plumbing.pdf

I read your link, but I don't interpret it as requiring a mixing valve at the toilet or water closet. It just requires a temperature valve at the hot water source. No house I have ever owned or built had hot water piped to the toilets. Cold water only to the toilets. Can you provide a more specific code reference?

[anothersteve]

I think mixing valves and anti sweat valves are being confused with each other.
Steve

[C. C. Rider]

I think the sound the OP is hearing is caused by the fill valve which may need cleaned or replaced. The fill valve is kicking on when other water is being used due to the drop in water pressure in the line when the other water using appliance kicks on.

If the fill valve is kicking on at odd times without water being used elsewhere, it may be due to a leaky flapper which can be replaced easily.

Sometimes the fill valve gets a little dirt in it. This can be cleared out by first turning off the water supply to the toilet. Then press down and turn counterclockwise on the top of the valve about 1/4 turn. The valve cover will lift off.

Then, while holding a drinking glass (or similar) over the top of the fill valve, turn the water supply back on. This will blow water out of the top of the valve and the glass will deflect it back into the tank.

After 10-15 seconds of this cleaning out, turn the toilet water supply off again. Then replace the top of the valve by pressing it down and turning it clockwise about 1/4 turn. Then turn the water supply back on and do a function check.

[Two Bills]

I have the same problem with my pipes, but I found that taking charcoal tablets and pepermint often helps alleviate the problem.
I am confined to the lanai until the pipes clear!

[ckcapaul]

Originally Posted by Two Bills

I have the same problem with my pipes, but I found that taking charcoal tablets and pepermint often helps alleviate the problem.
I am confined to the lanai until the pipes clear!

[Craig Vernon]

Originally Posted by Buckeyephan

About two weeks ago, we started hearing a shrill noise coming from our guest bathroom. It sounds a bit like a smoke detector. We tracked it down to the pipes in the shower. The noise stopped when we ran water or flushed. Every time we hear it, water is being used by the dish washer or washing machine. We called a plumber and yesterday for $85 he told us that because the shower was rarely used, air was being trapped in the pipes. We should run water there once a week. Followed his instructions and today the noise came back while running the washer. The sink and toilet are used daily so they wouldn’t be the cause. Our house is 6 years old.

Any suggestions would be appreciated.

There is an automatic air elimination valve that can be installed on your main feed water line or on individual feed water lines where this is a problem. Ask your plumber what the best permanent solution is based upon your water line configuration. Good Luck!

[mulligan]

I had the exact same problem, and it was, in fact, the fill valve inside the tank. Residue from dissolved limestone makes quite a mess around all water valves. Seemed most prudent to install a new valve purchased from Lowes for $10.

[marygalexa]

If you know what it is; why worry about it. Way too many other things to worry about.

[Investment Painting Contractors]

Originally Posted by marygalexa

if you know what it is; why worry about it. Way too many other things to worry about.

AMEN The OP had the problem fixed and everyone is still giving opinions. Len

[C. C. Rider]

Maybe other people who are having the same problem would rather not call a plumber and spend $85 and then have to call the plumber back again and spend another $31.95 when, with a little information, they can fix the problem themselves for little or no money.