For questions generally relating to the hot-water supply system of a typical residential or commercial building, primarily regarding the heating mechanism itself (a traditional hot water heater tank, tankless heaters including "point-of-use", boilers and heat exchangers, etc).

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1answer
28 views

Water heater drain pan pump capacity needs?

In the event of water heater failure, I'm considering installing a water heater pan with drain pump per this answer. How can I determine the necessary pump rate? According to the Insurance ...
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1answer
8k views

Why is my water expansion tank leaking?

I live in the northeastern US and we just turned the heat on (oil) and this morning I went down to the basement and saw this: The water is coming from the plumping above something labeled "water ...
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2answers
10k views

Can a washer and dryer be next to a water heater?

I have a GE gas dryer (DSXH47GGWW) that is currently next to an exterior basement wall. I'd like to move it to the opposite wall (shared with the crawl space) right next to the water heater next to ...
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1answer
64 views

What is the impact of moving a geyser outside?

We have an indoor geyser but are considering moving this outdoor to save space. We live in a Mediterranean climate with a cold winter day being 5°C (41°F) and summer temperatures generally ranging ...
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0answers
32 views

Why are water heaters generally installed on a pedestal? [duplicate]

Why are tank-style water heaters generally installed on a 2-3 foot (~0.6-0.7 meter) tall pedestal?
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2answers
85 views

Can I wire a water heater and tanning bed on the same 220V circuit?

Can I wire a water heater and a tanning bed on the same 220V breaker. I live in Ohio.
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2answers
166 views

Installed new water heater yesterday, today there is water in the catch pan

Yesterday we installed a new water heater. Pretty straight forward, my father in law has done many of these. I monitored pretty closely for next 12 hours and the catch pan under the water heater ...
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2answers
110 views

Is this flue dangerous?

I had access to a ladder the other day, so naturally I was poking around in the attic of our house where we have lived for about a year. Above the closet where the furnace and water heater are located,...
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3answers
110 views

Water gets cold after ten minutes of use!

Water runs cold after about 10 minutes of showering! Also there was black stuff coming out of bath pipe before. Just got a new water heater and it didn't fix the hot water problem :(. What could it ...
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1answer
87 views

Mystery valve on hot water line from water heater

I have a 1/2" od PVC outside my home with a steady drip of water. It is a few inches above the line that runs to the TPR valve on the water heater (confirmed by opening the valve). It's not the AC ...
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1answer
63 views

Can the water heater be damaged if the gas has been shut off?

Can the water heater be damaged if the gas has been turned off for a period of time?
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1answer
24 views

Baseboard water Heater

Gas hot water boiler not turning on past pilot light and click on thermostat for more heat. The flame on the furnace does not turn on. Changed out the Thermocoupler, After starting the pilot light, ...
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2answers
92 views

Direction of flow in radiator

I am about to install a new radiator in my apartment; we removed the old one without noting the direction of water flow. So I now have two pipes sticking out of the floor and I don't know which is ...
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1answer
22 views

The hot water pressure is low in my shower and tub

What would cause the only the hot water pressure to be low only in the shower. The pressure use to always be strong. It's not the shower head.
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1answer
76 views

Hot water twin impeller pump wiring to my boiler

I have installed a new Stuart Turner Monsoon twin impeller pump to increase the hot water pressure in my house. The pluming side of things seems to have gone well, however, I am not receiving any ...
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2answers
75 views

Broken Hot Water Circulating Pump - Shouldn't I still have hot water in showers eventually?

I have a Grundfos hot water circulator. After turning off the main to the house and the hot water circulator the other day to change out a valve for our dishwasher, the hot water circulator hasn't ...
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4answers
89 views

Is a tank-style water heater always under pressure?

Is a tank-style hot water heater always under pressure? In other words, is the entire tank pressurized? Is the pressure largely created by the force of the incoming cold water supply?
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2answers
8k views

Are galvanised steel pipes suitable for supplying hot water?

I am living in an old building where the old galvanized steel pipes are still in use indoors. Rather than upgrading to copper pipes, can I reuse these galvanized steel pipes for hot water (from a ...
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2answers
121 views

What is coming out of these water pipes?

I have been dealing with some hot water pressure issues. See Should hot water pressure be reduced after hot water is used? Today, hot water pressure reduced so much it was impossible to shower. In ...
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4answers
600 views

How to flush all the water lines in your house

I live in a small (1-traffic-light) town in upstate NY. Some local village water officials accidentally cracked a water main (feeding water to the entire area) and so the Department of Health had to ...
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2answers
98 views

Does the gas water heater in my laundry room require a dedicated vent?

I have been told recently by a potential buyer of my home that due to the gas hot water heater in my utility room, with electric washer and dryer, that I need separate venting to bring it up to code. ...
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1answer
108 views

Should hot water pressure be reduced after hot water is used?

I'm noticing reduced hot water pressure (on all faucets/shower) after significant hot water use (2 long showers, 2 loads of HE (High Efficiency) laundry, and using a sink for about 5 minutes). Cold ...
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3answers
117 views

Do I need to unplug my hot water recirculating pump when I turn off the water to the house?

When I turn off the water to the house (for vacation) and open a faucet to relieve the pressure, I notice that the hot water recirculating pump makes a lot of noise that it doesn't when the water is ...
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3answers
6k views

Using PEX for a water heating system

I am replacing my existing faucet plumbing with red / blue PEX all over the house. Everything that goes to the sink, dishwasher, washer, bathroom sink and so on will be color coded and installed ...
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1answer
28 views

Sulfur smell in one hot water heater, but not the other hot water heater

We have two hot water heaters in our house; one is in the attic and one is in our crawl space. We have a sulfur smell coming from the crawl space hot water heater, but the water smells fine coming ...
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0answers
28 views

Why does apartment plumbing make a rattling noise?

I live in an apartment, and recently the electric water heater was dying. There was a small leak and it stopped heating a couple times. It also made a crazy rattling sound like a little snare drum, ...
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1answer
38 views

Venting by gas meter

We're looking at installing a natural gas tankless water heater, but the vent option with it (that would be easiest to install through our solid poured walls) would come out about a foot away from the ...
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1answer
92 views

Tankless water heater requirements

I'm looking at the possibilities of replacing my water heater. Currently we have an electric, 2 element, 50 gallon tank heater that is 32 years old and almost ready to go. The water can sometimes come ...
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5answers
2k views

Prewarming for tankless waterheater

I have a tankless water heater that is just a little bit to small for our new house - the temperature rise isn't quite enough for the winter months. Our basement is big and relatively warm so I struck ...
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7answers
173k views

Why is my hot water running out quickly regardless of other household water usage?

I've noticed that my shower, which used to run hot water for what seemed like forever, now can only produce about 15 minutes of hot water. This doesn't appear to be related to other water usage in the ...
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2answers
2k views

How do I remove a stubborn element from a water heater?

I need to pull and replace the elements in my water heater. The problem is, I can't get the old ones out. My Channellock pliers can get a grip, but slips off pretty easily. Is there something ...
2
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1answer
75 views

Is it worth it to pay extra for a stainless steel tank water heater?

I'm getting ready to replace my ancient water heater and wondering whether it makes sense to get to a model with a (edit: 316L) stainless steel inner tank instead of one with the standard glass-lined ...
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1answer
142 views

Why is water still above elements after draining hot water tank?

Went to change "element" AFTER draining hot water tank using hose attached to drain nozzle at bottom of tank. Drained for almost an entire day. When I went to unscrew and changed existing element (...
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1answer
32 views
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1answer
37 views

Why does my hot water heater flame and pilot go out?

Why would Kenmore water heater it lights then burner comes on until tank is all hot but after that it won't light again and flame goes all the way out and then I have to manual light the pilot again?
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1answer
43 views

Water heater pilot not staying lit

A customers 70 gallon gas fueled Bradford White water heaters' pilot light goes out immediately after releasing the red pilot button when relighting it. I concluded (in order of most likely suspects) ...
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1answer
298 views

Electric water heater overheating very quickly

We have an electric water heat that recently started heating the water to about boiling. We heard a loud pop one night, not sure if that has anything to do with it. So far we just replaced the ...
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0answers
114 views

Tankless water heater beeps and causes power surge

We have a new tankless water heater. Every time we turn on water lights through out house flicker and water heater starts beeping. Any ideas on what causes this to happen??
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5answers
2k views

How high to raise water heater above floor?

I saw a water heater stand at Home Depot but it's about 15" high. That's a bit too high for my basement. Can I just make one with 2x4 and plywood that's only 4" tall, basically just enough to be able ...
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3answers
59 views

Electric water heater power switch

Q1: Should there be a(n emergency) power switch next to an electric water heater? Q2: If A1 is no, is it okay to have one anyway? Q3: If A2 is yes, what kind of power switch should I use? I don't ...
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3answers
23k views

How do you know when you need a new water heater?

Our hot water is hot sometimes, but not always. For example I might be able to fill up a tub with hot water one morning, but the next morning the water might be cold. This is our first home and when ...
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4answers
3k views

How to determine gas leak on a water heater?

My gas water heater is certainly leaking gas. I can smell it. Using the image below, it seems like it might be coming from the red circle where the dial connects to the thermostat or the blue circle ...
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9answers
2k views

Is it about time to replace the water heater?

My wife and I just recently closed on our first home. The home was built in 1930 and aged excellently. The couple who we bought the home from had purchased it as a foreclosure in 2006 and made it ...
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1answer
27 views

Are water heater piezo igniters compatible across brands?

Is there really any difference in the piezo igniters used on water heaters? My Maytag has a bad one and they are not available any more, but it and its bracket look exactly the same as this Rheem one. ...
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1answer
1k views

What could cause the hot water not to work after replacing a water heater?

I replaced my hot water heater and now the hot water doesn't run in any of my faucets. What could be the problem? I did not have to replace any piping from old hot water heater and the water ran fine ...
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2answers
90 views

Does a water heater consume more or less power if one element isn't working?

Will there be more power consumption to heat water in the tank if one of the elements is not working or will it just take twice as long to heat the same amount of water to a preset temperature?
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2answers
178 views

I stripped the thermocouple adapter on the gas valve on my hot water heater so I cannot connect the thermocouple.

I can tell the connection piece has threads, is there a way to unscrew that piece and replace with a new one? The nut sheared off. Is there a way to alternately connect the end of the thermocouple to ...
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1answer
96 views

Hot water is coming out of all faucets brown

I live on the second floor in a condominium and had my direct vent hot water heater replaced approximately 8 years ago. At the time I recall having various vendors out to give me an estimate and very ...
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2answers
5k views

Newly installed water heater with faint gas smell

Installed a new water heater last night (Rheem Performance Plus Model #XG50T09HE40U0). All went well with installation (including gas line bubble test), but this morning I could detect a faint smell ...
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0answers
25 views

elec hot water heater stopped heating after water was shut off for repair

i am in a mobile home with a 9 month old elec hot water heater. They turned off the water yesterday due to a water main break. now it is not heating. help