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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0answers
13 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
40 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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0answers
49 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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1answer
25 views

How do you change a lower heating element in an electric water heater?

Is it easy enough to do or do I need a professional?
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1answer
26 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
21 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
44 views

Can i use a water heater as my source for the in floor Pex tubing system?

I installed Pex tubing in concrete in 2 areas, both garage floors. I have been told 2 things.... one is that it will require a boiler, two, that a hot water tank will do the job. Cost is a huge factor ...
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0answers
43 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
1k 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
34 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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1answer
24 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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2answers
49 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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1answer
55 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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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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2answers
55 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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0answers
19 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
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2answers
45 views

Can I replace the thermopile with a thermocouple in my water heater, and have it work properly?

I'm having a tough time finding a thermopile at Home Depot, and lowes. I can find thermocouples all day long, and I can rig the wiring so I have no loose ends. However, I know those two units don't ...
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1answer
25 views

Plumbing - Particles / Debris In Faucets and Toilets - Water Softener Going Bad?

I had a hot water heater replaced in my house. Shortly thereafter, I noticed that the water flow in one of my faucets near the heater was very low. I wasn't sure, what to make of it, so I had the ...
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2answers
55 views

Connecting a water heater, what kind of fittings, valves, and adapters?

I'm buying a new water heater, and quite frankly the series of connections and valves are mind boggling. What I'd like to do rather than soldier the pipes together is to go from compression to thread. ...
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2answers
54 views

Hot Water Tank limit switch tripping, but not over heating?

My just over 2 year old, professionally installed gas hot water tank frequently loses the pilot light. I've had the installer come out 4 different occasions to look, and every time, he's stumped at ...
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1answer
18 views

Furnace and Water Heater Ventilation pipe

I have a home that was built in 1924, the pipe that vents my furnace and water heater is green and it is located in my chimney. The top of the chimney is open in my attic, you can see the green ...
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2answers
59 views

Why is the TPR valve dripping on my new water heater?

I recently install a Kenmore #58240 40 gal. electric water heater. I had a 50 ga. approx. 12 yr. old Rheem which started to pop a little so I just decided to get a new one. After I installed it at ...
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1answer
32 views

Water Heater Dripping and Hissing Internally

I came home today and found that the gas water heater (traditional tank style) was not working. The pilot light was out so I relit it and the heater came on. After about 10 minutes I noticed that it ...
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0answers
48 views

Could my New Hot Water Tank be improving my Furnace

I've gone thru 2 blower motors in my furnace in 3 yrs. Techs don't know why. I purchased a New Water Tank recently and it seems strange but my furnace is working better. Usually I could hear noises ...
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0answers
18 views

Are all boiler heating systems closed?

Are all boiler heating systems closed? In other words, are they all filled with water that is just constantly recirculated, or are there some that put the outgoing water elsewhere?
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1answer
47 views

Why do both water tanks have hot inputs? Is my boiler (on-demand) feeding into my hot water heater?

I have an interesting setup that I'm trying to understand (without tearing apart sheetrock). I have two electric tank-based water heaters, and a tankless gas water heater that is used for the boiler ...
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1answer
41 views

What is a normal drip rate for a condensing tankless hot water heater?

I have a Tagaki T-H3-DV-N (Indoor) tankless hot water heater. It has a condensation drip spout, and drips about 1 gallon of water per day. Is this excessive or normal? Edit: I've spoken to the ...
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1answer
15 views

Can I relocate my electric water heater under a basement window?

I am currently making floor plans for my finished basement in Ohio. I had a pipe near a frost free spigot rupture two years ago but that was because of a faulty washer. Is relocating the water heater ...
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2answers
32 views

Can I shut off a second water heater?

I reviewed this question and answer and there's probably similarities to this question, but wasn't sure what kind of setup I have. So I'm hoping I don't get flagged as duplicate. We've got two gas ...
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0answers
44 views

Hot water no longer coming from water tank (air lock??)

Two days ago I disconnected and capped the water supply to a set of taps for an old laundry sink in my basement. I turned off the cold water supply to the house and also to the hot water tank before ...
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1answer
48 views

Should water heaters be turned off (for safety) when not in use?

Is there any safety concern regarding leaving water heaters on 24/7?
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2answers
34 views

Water heater on pilot

so I moved into a new apartment last month. The water wasn't very hot so we thought it was just because the weather has been getting cold. Turns out the water heater has only been on pilot, so the ...
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2answers
216 views

Can my water heater's relief valve discharge line and drain pan line merge into a common pipe?

Currently, I only have a T&P relief discharge line that runs down to just above the pedestal and out through the exterior wall. I would like to install a drain pan under the water heater. I want ...
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1answer
17 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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1answer
54 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
60 views

Install of tankless water heater

I want to install a tankless water heater. Have a 125 amp panel, with two 30 amp breakers for the current water heater. Install manual recommends having two 40 amp breakers. Max draw is 75 amps. ...
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0answers
32 views

Solar Panel Collector type for Caribbean

I live in the Caribbean and am looking to get a solar water heater system. I’m looking into flat panel or evacuated tube system. I got an offer for an evacuated tube system with a stainless steel tank ...
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1answer
27 views

closing cold water inlet valve to propane water while away for 2 months

I have a 16 year old State Industries 40 gal propane water heater. It currently works fine (only issue I've ever had was to replace the thermocouple a couple of years ago). However, I'll be away for ...
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7answers
267 views

Replacing a water heater--the physical task, not the plumbing part of it

Once again it's time for a new water heater and I find myself dreading the task. The water heater sits on a pedestal that is approximately 18" high (required by code) and lifting a 50 gallon water ...
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1answer
108 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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1answer
54 views

shower shock,when hot or cold water is used in other parts of house

our 2 showers, we can't run any other hot or cold water without get extreme hot or cold differentials while in the shower.bought house last year,built in 1985.
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1answer
130 views

Thermocouple keep burning out, is it our gas valve?

Thermocouple keeps burning out. Looking at 1 or 2 within 2 week period ! Tried different brands, the pilot will only stay lit for 3 minutes then automatically shuts down.
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2answers
135 views

50 Amp tankless water heater and 30 amp double pole switch

I just moved into a house. I have a 50 amp max tankless water heater. The circuit breaker is 50 amps. The water heater is connected to a NEMA 10-50 power receptacle. There a switch to turn on and off ...
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1answer
37 views

Draining Water Heater

Recently, my water heater started leaking from the top edges. I can see rust lined up all along the outer rim on the top, and water is very slowly trickling out. I've made an appointment with a local ...
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1answer
158 views

Will an inline tankless heater help my 50 gallon water heater fill my 70 gallon tub?

I've been working on an issue with my remolding plan. I want to get a 70 gallon tub, but I currently only have a 50 gallon water heater. The water heater is only 2 years old and is fairly nice, but ...
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1answer
167 views

How hot should my hot water heater vent get?

My gas hot water heater's flue/vent is very hot to the touch. Is that normal? How hot should it get?
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1answer
106 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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2answers
61 views

Need help understanding gas water heater

I just bought a house and it have a gas water heater. I need to know what is the water shut off valve to shut down water in the entire house. Also if you can help me label any of the other knob (which ...
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1answer
43 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
46 views

Does a water heater have to be completely full for the water to heat?

We installed a new water heater and it is not hot. We think it is full. Does a water heater have to be completely full for the water to heat? We think we may possibly have a leak in the hot water ...