Why does my shower turn on when I turn on the hot water in the bathroom sink?


I have four bathrooms in a two-story house. Two of them, one on the first floor and other right above it on the second floor, have knocking sounds when you flush the toilet and run cold water. It has … read more


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Why doesn't anyone make a toilet flush valve that closes slowly at the end to eliminate water hammer? … read more

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We have three bathrooms with all toilets running for a few seconds and then ending with a loud noise. Anyone have any ideas on how to fix this? I've tried adding water to the tank, replacing the rubbe… read more

Rick the plumber


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Hi, I have a basement toilet that works fine except for banging on pipes after it has filled up subsequent to a flush. Seems like air in...

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1 Answer

No hot water comes out of shower just cold comes out even when turned to hot, sink 2 feet away has hot water

The problem more tha likely lies within the shower valve body. Possibly the shower head has an accumulation of deposits clogging up the holes but that would not affect the hot water supply only. You might try removing the shower head and turning on the hot water. If you get hot, immerse the head in Limeaway for a hour or two and replace it, or install a new head. If you still do not get hot water, the shower valve needs attention. The cartridge inside the valve body will likely need replacing or at the least cleaning (Limeaway), replacing rubber seals and use plenty of silicone grease before re-assembly.

Oct 26, 2010 | Ldr Industries 520 1300C ADJUSTABLE...

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The place we are renting has intermittent hot and cold water in the shower. We can't take a shower without it suddenly getting cold, then we have to turn the water off, stand there (all soapy!) for a few seconds, then turn it back on and hot water will return. The water heater has been turned up to a dangerous temp- literally scalding- so every shower is an adventure.

The water heater is a tankless. In an attempt to identify the problem, I've run the hot water in the sink that is right next to the shower for five minutes and no problem with hot water- it was continuously hot the entire time.

I think it might be the shower valve or cartridge. The hot water spigot is separate from the cold in the shower. The same problem occurs in the guest bathroom shower in the main house, located on the other side of our shower.

Can anyone provide guidance on hot to identify and resolve this problem? It's an older home.

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I feel everyone's pain. Our previous house was like this. On our first visit the owner showed us round. He seemed pleasant enough and said 'This will be different! Most people show you all the good things about their houses. I'm going to show you all the bad things...'

I didn't entirely believe him at the time but six months later when we finally moved in we realised that the few, very minor things he'd pointed out were but drops in the ocean. He'd suggested there was a bit of redecoration needed. He hadn't thought to mention that the wallpaper in the kitchen was held up with blutac because the plaster was so damp that the wallpaper paste wouldn't stick.

That was just the start. They'd had two big dogs. The garden had really just been a big dog toilet. Every carpet and curtain in the house stank of dog. They'd left us a broken down mustard-coloured sofa which stank of dog. Every surface in the kitchen, including the ceiling and the hideous fluorescent tube light...

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Somewhat inspired by the latest "do you pee in the shower" thread, I've been thinking about showers with strangers and strange places I have known. For as long as I've been showering, I've bathed with the water running from the moment I step into the shower to the moment I reach for a towel, but lately I've been exposed to people who seem to do it differently. For instance, I was staying in a hostel in Belgium a little while ago, and the shower there was designed to only release water in a fifteen-second burst before automatically shutting off. I just assumed that was a water-saving measure the facility instituted, though, and didn't really think anything of it.

Then, much more recently, I was helping a coworker to bathe a patient in the shower, and my coworker didn't leave the water running on the patient while she lathered her up. I couldn't think of a polite way to ask why this was (my thoughts on it are, "Jesus, don't you think the patient is cold as hell, sitting there...

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I've got a combi boiler which has been ok for the 5 months since we moved in but yesterday the hot water was coming out only warm. I'm no genius with these things but I had a look to see if I could spot anything obviously wrong but all seems ok.

The heating works fine and the hot water seems to flow as it did before just not as hot. The gas supply pipe seemed to be quite hot when I touched it but I'm not sure how hot it got before as I'd never needed to touch it - not sure if this is right? I thought maybe the pipes weren't lagged and it would be losing heat with the cold weather but it doesn't seem hot enough when touching the pipe directly under the boiler.

Any ideas what might be the problem...

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There’s nothing worse than getting ready for a nice hot soak only to discover you’re in the midst of a cold water shower. If things simply never heat up, it’s probably because your water heater has been working overtime and needs time to regenerate. But if your hot water shower turns suddenly chilly, the problem may lay within the unit itself. Here is a quick way to solve any hot water shower troubles.

Water Heater Problems

First, check all your fixtures throughout the house to see if your cold water shower is a singular problem or a whole-house situation. If none of the plumbing allows hot water to pass, then the problem is your water heater. Check the temperature control on the unit to see if the setting is ideal. Next, check to see if it’s blown a fuse. If you have a gas unit, it could be that the pilot light has blown out, in which case you should relight it following the manufacturer’s instructions. However, if there is still no sign of a hot water...

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Chris - If you've noticed, when you turn the shower on the morning, the cold water comes through from the pipe first and it will splash and sound different against the bottom of the shower compared with when the hot water, which comes along shortly afterwards, comes in; the note will change. This is a real observation; your ears aren't deceiving you.The reason for it is that water changes its viscosity - its stickiness - according to its temperature. If you could zoom in with a really powerful microscope and look at some water molecules, what you'd see is they are shaped like miniature boomerangs. At the apex of the boomerang you would see an oxygen atom and on each of the arms, you'd see hydrogen atoms. Oxygen loves electrons, so it pulls the electrons of itself and the hydrogen towards itself very tightly, and that makes the oxygen a bit minus. The hydrogens are correspondingly therefore a bit plus. As a result, when water molecules are sitting together side by side in solution,...

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So you’ve stepped into the bathroom in anticipation of a long, steamy shower. You’ve had a hard, sweaty day and you can’t wait to sway under a steady stream of hot water. You turn on the showerhead and sigh with satisfaction. Three minutes later, that sigh turns into a yelp as the water turns to ice.

So why did the water go cold?

Investigate The Scene
There’s usually one major reason why your shower is tepid or running out of steam. But before you jump to conclusions about your household’s hot water use and capacity, check for a simple solution first.

Is the problem of running out of hot water confined to one shower head or does it occur in all the faucets in your house? If the problem is confined to one unit, perhaps the mixing valve in the shower head is broken or stuck. If you can no longer draw hot water or deftly control temperature, it may be time for a DIY fix or even a replacement faucet.

Check to see if your water heater is turned...

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Just in case this is still a problem… because I know that plumbers never come when you need them most…

Electric water heaters normally have a cold water inlet and hot water outlet located at the top of the tank. If they aren’t labelled, you can usually tell which is which simply by feeling them. Be careful as you approach any pipe when you don’t know its temperature.

Closing either valve will shut off the flow through the water heater, but shutting the hot (outlet) valve is safest. Shutting that valve will not harm the heater in any way. As long as there is water in the heater it can remain energized (turned on electrically). You can always flip the switch to the heater, too, either on the heater itself if there is one there or at the fuse / breaker box for the house. If you can’t turn off the water for some reason, at least de-energize the heater.

If you have oil heat and included hot water from the furnace, then the only instruction that would apply from...

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Answer 1:

The fog in the mirror is the condensation of water vapor as it touches a colder surface. By running cold water you just cool down the bath tub and everything around it. Now the vapor coming from the hot shower will mostly condense right there and will not reach the mirror.

At the same time, the mirror is heated by hot dry air, and then the condensation of water vapor becomes less likely on the warmer surface.

For air containing a certain amount of water vapor (moisture), there is a maximum temperature at which the water will condense. This is called the dew point. For example, our breath condenses in a fog when the external temperature is below the dew point corresponding to the concentration of water in the gas we exhale. If the temperature is above that dew point, no fog will form.

Answer 2:

Fogging means that steam condensed on the mirror.Steam can condense on any cold" surface, but on a mirror we can see the result. Clearly, for fogging to occur,...

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I’ll tell you what – nothing makes you think twice about turning on the faucet than seeing your water bill go up.

I guess that’s the price to live during a drought. In the desert. In California.

Go figure.

Still, I like hot showers and to be clean and to eat pasta. All of which require water. So if any of that’s gonna happen while keeping food on the table, we’re gonna have to get creative with saving water.

Last year I shared a very popular post of 7 ways to water the garden for free. But my gardening season is ending and I still need to save water.

Our DIY water displacement is still working like a charm in our bathrooms, but like I mentioned earlier, our water bill has gone up and it’s time to take action.

So I took notes this past summer on the small yet significant ways we’ve been saving water. Some of them are a bit “out there” and your friends might think you’re a bit looney for doing them, but you know what?


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I am renting a house with a tub that has a single handle faucet. There has never been enough water pressure, but it is slowly getting less and less. In the last week or so I am having trouble getting enough hot water. There has always been more pressure on the cold 'side'. The last time I used the shower I had to set it all the way to hot, and it never got hotter, didn't even steam up the mirror. The bathroom sink is plenty hot, as well as the kitchen and basement sink. Whatcha think? Please help.

I'm 100% certain there is a partial flow blockage on the Hot Water side.

I just re-piped a house from galvanized to copper last weekend due to lack of Hot Water Flow in the Kitchen and Bath.

The Bath had been upgraded to a single handle pressure balancing valve that made the problem go from annoying to acute. Taking the valve out of the wall to clean out little rust particles every other month was becoming old... so I just decided to...

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For as long as I can remember, I have been a spa lover. I will spend my last dime on the spa and when I married Chad, he was not into going to a spa at all! So, one day, I schemed something. I booked an appointment for both of us to go to a spa and I just secretly took him there and at first, he was resistant, but then he got into it and now he loves spa days. We use spas as that special place to go relax and recharge. The thing is, you can’t always go to the spa. It’s expensive and it’s time-consuming. So, how do you bring that spa experience home? This week, I want to share seven ways that I’ve brought the spa into my home, specifically in the bathroom. An evening of at home spa activities can do wonders in helping you to relax and recharge.

DIY Bath Bombs

If you look at the treatment menu on spa websites you’ll see that they have specialty baths. These can involve anything from mud to oatmeal to champagne – yes, it happens – to milk. I’ve even had a cedar enzyme...

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Choosing A Hot Water Heater For A Tiny House – The Tiny Life

Tiny House, Tiny Living, The Tiny Life.

Recently I have been spending a lot of time trying to figure out the best option for hot water heaters for my Tiny House, but I have been back and forth on which way to go. So I realized, why don’t I see what my readers might know!

So far I have decided to focus on tankless hot water heaters. Essentially these hot water heaters don’t hold water like traditional hot water heaters, they rapidly heat the water as it flows through their heat exchangers so you only heat the water you use. The area I am having trouble with is to go with an electric unit or go with a propane unit. I don’t like how much power the electric ones use (13 kw/h) if I one day go solar, but the gas units are a lot bigger (not so great in a tiny house) and need to be vented. I also don’t know how quickly I would burn through a propane tank (I take 10-15 minute showers daily).


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