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Questions tagged [water-heater]

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
26 views

Do pex fittings need to be replaced when installing a new water heater?

I have purchased a new water heater to replace the original 11 year unit. I am concerned in attaching the existing fittings to the new unit. I believe the builder used pex directly to the original ...
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1answer
111 views

Why does shutting off cold water valve to the water heater shut down cold water in entire house?

I'm a new homeowner so maybe my understanding is off. My question is, why would turning off the cold water intake valve on the top of the heater turn off cold water to the entire house after about 12 ...
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2answers
44 views

Water heater sacrificial anode metal selection

A residential 17 year old electric water heater is working well in Florida. Maintenance is overdue. I plan to inspect / replace: sacrificial anode (expected to replace) heating element (expected ...
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2answers
50 views

Pre-emptive Water Heater Replacement

An old ground-floor office has an old electric water heater. The building was built in 1994, so the water heater's age could be ~25 years. The tank / office has been unused for the last 8 years. ...
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0answers
24 views

Two overflow lines on hot water heater

Why do I have two overflow lines plumbed from my hot water heater. I know what the one is for the pressure relief valve, but I have another one plumber directly after the shutoff valve on the cold ...
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2answers
68 views

How can I temporarily bypass a water heater?

Is there a way I can keep my water turned on and bypass my water heater so I can have water in my home? It's a 30 gallon electric water heater... I can't get a water heater until next week..
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0answers
25 views

Water Heater Not Working After Replacing Both Thermostats and Testing Elements

I replaced both the upper and lower thermostats with new ones. I tested the elements with a multi-meter and the top one was 15 ohms and the bottom one was about 12 ohms so they seem to be fine. I even ...
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2answers
50 views

“Hot water” cold after heavy rain

This is very odd, but every time we get a heavy rain, the hot water in our house is lukewarm at best. We have a fairly modern gas-fired hot water heater (GE GG40t06avg01, mfg 2011), and at all other ...
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1answer
31 views

T&P relief valve's probe size issue - can I use a shorter exposed probe to replace a long one

Please check the below picture, can I use a longer neck of T&P valve which has shorter exposed probe compare with my old to replace it?
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0answers
49 views

Something like ICE inside of tank of gas water heater, what should I do?

I saw the ice stuff inside of my tank when I try to change my Pressure relief valve, is this real ice or something else? this thing really scares me when I saw it, just like the alien's baby nest, lol....
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3answers
41 views

T&P valve is really tight, not able to remove it

I have the below T&P valve, I'm not able to remove it to replace a new one. I saw there has some declaration above the valve which said it's the combination of the water heater, does this mean I ...
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0answers
65 views

What is this pipe?

I discovered a 12" diameter concrete pipe traveling vertically from the basement to the attic of a one story house. The pipe is lined both internally and externally with metal. I would like to know if ...
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1answer
45 views

Cupric chloride on pressure relief valve of gas water heater

I found more cupric chloride on my pressure relief valve after back from a 2 weeks vacation, should I worry about it? And, what should I do before turn on the gas water heater? It used to has some ...
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2answers
60 views

Hot water recirculation pump suggestion in home with return hot water line [closed]

We had a hot water re-circulation pump by water heater before and had it removed last December when we detected leaks around it. This is our setup: We have a return hot water line coming back to the ...
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3answers
46 views

ECO 36 on 200 amp panel

I want to install an ECO 36 36kW electric water heater which requires 150 amps max. My house panel is 200 amp and is out of space. What are my best options?
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1answer
36 views

What energy saving methods can I use for a new gas water heater?

I am getting a new water heater (Bradford White RG2PV50T6N, which is gas powered). I was wondering if I could do anything easy to make it more energy efficient. 1) Would a jacket help conserve heat? ...
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0answers
30 views

Can I connect a water heater relief valve to an unused dishwasher drain?

I am installing a 4 gallon water heater under my kitchen sink. Is there an easy way to hook the t/p relief valve to the old unused dishwasher drain?
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3answers
43 views

Is a tank less water heater a bad choice for a house with low water flow?

We are thinking of replacing our current natural gas tank water heater by a high efficiency tank less heater. However we have a water main issue, the house is from 1930 and the main is partially ...
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2answers
32 views

Can the overflow pipe on the water heater be screwed off to replace it with a longer one?

Can you screw off a water flow pipe and replace it with a longer one that terminates closer to the floor.
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1answer
38 views

Tankless Water Heater - wasting water

It takes a while for the water to heat going to the tankless water heater and in doing that, a lot of water gets wasted. Is there such a thing as a pre-heat switch that would start the heating ...
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1answer
61 views

Hot water heater running out at 50%

I have a 120 gallon indirect water heater. I notice that when I take a shower with a 3 gpm shower head, the water starts to cool after about 20 minutes, which would be 60 gallons or only 50% of the ...
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4answers
90 views

New electric hot water heater, hot water turns luke warm after 12-15minutes of use?

Converted my oil burner to a gas burner and added an electric hot water heater. When i use the shower the hot water turns to luke warm in 12-15 minutes. It was installed by a professional plumber and ...
8
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5answers
4k views

I ran out of propane and now the water heater pilot light will not stay lit

I had run out of propane. Now that I have propane, I can’t get the pilot light to stay lit on my water heater, nor will it stay lit even long enough to light the burner. Click for larger view:   ...
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1answer
34 views

What happens if I have two water heaters and one's over-pressure relief valve fails?

If I have two water heaters with pressure relief valves and one heater miserably fails (ie over-pressure relief valve becomes "stuck close" and boiler also works at 100% duty cycle due to, for example,...
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1answer
32 views

Water pressure issues

I've been seeing some strange water pressure in my house, nothing has changed recently. I had always seen the pressure coming out hard at first, after the water heater had been running, but the ...
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2answers
63 views

How to install vent cap over cement pipe?

The picture attached is a cement vent pipe I found on the roof for water heater venting. Looks like the cap has been broken off, but I have no idea what was the original looks like. The diameter of ...
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1answer
22 views

water heater - flow problem

got a new 3 liter instant water heater installed. When the heater is off, water flow is normal. When it is on, about one liter or so hot water flows and then there is no water. What might be the ...
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1answer
48 views

Bubbles in water heater system

My heater stops pushing hot water through the heating loop. The symptoms can be addressed by bleeding the system which always produces a lot of air coming out. The heating works for about 24 hours ...
0
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1answer
37 views

How to test water-heater thermocouple?

So I took out Kenmore Power Miser 9 burner assembly and want to root cause why the pilot light kept going off whenever I released the RESET button during ignition procedure. Here is the test I did: ...
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1answer
30 views

How to remove combustion door for Kenmore Power Miser 9 water heater?

I removed the two screws on the sides of the door and tubes coming out from controller. However, the combustion door still don't want to come off so that I could service thermocouple (I have seen how ...
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2answers
100 views

How safe are electric faucet water heater? [closed]

I would like to buy one of those electric faucet water heaters for my parents. But I'm very concerned about if they are even safe to use and some questions came into my mind: how is the internal ...
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1answer
43 views

Kenmore Power Miser 9 Water Heater turned off on its own and has become incredibly hard to reignite

This week my 7 year old water heater turned off 3 times and it has become incredibly hard to reignite the pilot light. Here are the observations: When I press the red "RESET" button, I hear ...
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1answer
16 views

How to remove thermocouple from this manifold door?

It has a black object that seems to be secured down by a U shaped clasp. I cannot see how the clasp can be removed. Everything is tight and doesn't appear that a tool can fit anywhere to loosen it up. ...
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3answers
65 views

Small electric water heater below sink to get instant hot water?

There is quite long pipe going from the gas water heater to our kitchen sink. This means that there is a delay before hot water actually becomes hot, especially in winter months. Now I saw that there ...
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0answers
18 views

Immersion heater drip out of oveflow pipe

In my flat I have an immersion heater to heat up hot water. The problem that I am having is that when I leave the elements on for about 30-40ish minutes cold water starts to drip through what I am ...
2
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1answer
21 views

Installing Vapour Barrier in Crawlspace with Water Heater

I'm installing a vapour barrier over the dirt floor in my crawlspace. There is a water heater already installed and I'm wondering if it's a good idea to tape the vapour barrier directly to the bottom ...
2
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2answers
87 views

Will increasing the temperature of my hot water cylinder's thermostat make my shower water supply last noticeably longer?

I have an unvented electric immersion heater cylinder which heats the hot water for my household. The capacity is 200L and the temperature is set to 55°C. The water heater is hard-wired to run ...
0
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1answer
64 views

Heat an outdoor water tank to 10°C? (with an electric heater) [closed]

I have a stock tank full of water in a unheated greenhouse. The greenhouse is located east of Toronto, Ontario, Canada, where the temperatures occasionally go down to -25degC in winter. I would ...
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1answer
94 views

Hot water tank cold water is always flowing

My hot water tank cold water is always flowing and it's losing water out of the temperature valve relief tube on the cold water intake side (see attached photos). I just noticed this, but it could ...
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1answer
58 views

Inconsistent hot water

We are currently doing a full en-suite bathroom remodel. About 2 weeks ago all of the plumbing was completed and about the same time we noticed that we weren’t getting as hot of water in the other ...
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1answer
103 views

I have two water heaters - how can I tell if they are set in series, parallel, or are isolated?

The question says it all - I have a 4,200 sqft house with two water heaters - one on the far side of the house in the garage and the other in a small closet by the master suite. The latter is at least ...
0
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1answer
58 views

How to check and turn on pilot light of this water tank?

I have never done this before but the gas line was turned off briefly and now we have no hot water. Look like the pilot light went out on this but I have no idea how to see the light and how to turn ...
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2answers
57 views

Rheem Hybrid Water Heater Dead

My one-year old Rheem Hybrid Hot Water Heater (xe50t10hd50u0) is completely dead. Power to the unit is good (full 240v). Screen on the unit is blank. I've pressed the reset button; no help. ...
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1answer
34 views

Best/Quickest way to drain hot water lines from tank?

Due to serious lack of appropriately placed shut-off valves in my house plumbing (not my fault, it came that way), I need to shut off the cold water supply to my gas hot water heater so I can replace ...
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1answer
26 views

why won't my shower regulate water temperature

a couple days ago this started. no matter what position I turn the handle towards the left it's always very hot. and the same if I turn it to the right. very cold. I'm assuming there must be some sort ...
2
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3answers
379 views

Is copper piping required within a certain distance from a water heater?

I have read that National Code requires you to use copper for 18 inches from your water heater. How can I do this when everything existing is PEX? I need to replace my existing low boy water heater ...
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0answers
30 views

Do I need to replace the water heater vent pipes if they have salt corrosion?

I was in my attic improving the insulation and I found that my exhaust pipe for the water heater has salt/corrosion all around the seams. Based on what I found, this is either caused by inadequate ...
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1answer
22 views

Extend sidewall hot water tank vent outside?

I have a power vented hot water tank just on the other side of the wall (and in the basement) from the exterior pipe you see in the picture. The problem is that the steam vents onto my wife's flower ...
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1answer
105 views

Water heater requiring 30A breaker running on 20A

I called a plumber to upgrade my water heater. The current breaker is a 20A. The new water heater requires a 30A. But my wiring is #12. The plumber said, without much conviction, that it's fine for ...
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1answer
28 views

water heater draining hot water continuously from an outlet (seems tp valve outlet to me) [duplicate]

My gas water heater, continuously lets hot water out from the outlet (seems it is connected to tp valve, it goes through the wall to outside the home). If I turn the water heater to low (much below ...