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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24 views

Electrical wiring question for instant water heater

I am installing a point of use Chronomite SR-20L/240 HTR 240-Volt 20-Amp SR Series Instant-Flow Low Flow Tankless Water Heater. https://www.amazon.com/Chronomite-SR-20L-240-HTR-Instant-Flow/dp/...
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2answers
27 views

moving electric water heater to old shower cove

doing extensive remodeling of a small (1400 sq ft) house. I want to move the electric water heater to an old shower cove. Getting the wiring there will be easy (its about 5 feet away and all the walls ...
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1answer
95 views

Water heater not filled with water before being turned onto hot setting

I had a new water heater installed by a local handy man plumber. My initial concern was tank had 3 dents in it. Was on phone with company (Sears) re: dents, so plumber was delayed some due to phone ...
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0answers
34 views

Why is there yellow water and how to solve this? [on hold]

the water (hot?) in our building looks yellow. Is there some of product that will help clean or protect against whatever is causing this? Can we clean or flush out the pipes/water heater to resolve ...
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0answers
17 views

Hot water issues in apartment [duplicate]

We had changed the shower handle cartridge last year per a plumber's suggestion and it seemed to resolve the situation but apparently it didn't. Right now, for some strange reason, one fixture is ...
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1answer
27 views

What is causing my gas water heater to make a high pitched noise?

I woke up two mornings ago to water that was colder than usual, so.. I naturally went to check the water heater and the pilot was out, the pilot light has never went out in the 4 years- almost 5 I've ...
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2answers
294 views

T&P valve draining - expansion tank issues?

I am having issues with my Water Heater. It's a slantfin tankless boiler (TR-30 PT). It's running on a 4 zone setup. I typically only use one of the zones though. We've been in the home for a year and ...
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1answer
26 views

What type of Anode rod should I get for my water heater?

It's time to replace my anode rod and I'm not sure what type I should get (Magnesium, Aluminum, Combination, or Powered). I have a well and use a water softener. I have a high iron content (orange ...
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0answers
29 views

Hot water temperature fluctuating

I have an 8 year old A.O. Smith gas hot water heater that might be having some issues. What we're seeing is that the hot water temperature in our house has been fluctuating a lot lately. Sometimes ...
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1answer
34 views

T&P drain line needs to be outside of the house?

I called the gas company to turn on gas. But the engineer left a note saying that "T&P drain line needs to be run outside of house". I called my plumber but he didn't know such a thing. Can ...
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1answer
37 views

I Replaced Pressure Relief Valve on Rinnai water heater (twice!!). New one does not hold ANY pressure

I just finished replacing the pressure relief valve on my Rinnai hot water heater. Everything went well, I turned on the cold input and wham, water just started gushing out of the relief valve. All ...
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1answer
29 views

Electric water heaters

I just put in a trailer and was informed that they had just turned on the power. There isn't a water hookup yet. Will it hurt the heater to be on with out water going to it before I can get back?
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1answer
30 views

Flow sensor adjustment for Navien 240S natural gas

We installed a Navien 240S natural gas in our house, and it is working fine. Except the short range for hot water valves in the showers. So, in other words, I need to turn shower valve almost all ...
0
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1answer
25 views

Water Heater Cold Intake Pipe always drips from drain valve

The cold intake pipe for my water heater has a drain valve with plastic tubing leading to my basement drain. This tubing always has a constant flow of dripping water; basically, my water heater's cold ...
7
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6answers
32k views

Why does my kitchen faucet have low pressure after the water heater was replaced?

I recently replaced my water heater, and since then, the water pressure for my kitchen faucet is really, really, low. None of my other faucets seem to be affected (bathroom, shower, etc.). I can't ...
2
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2answers
468 views

How to prevent pressure from dropping from my water heater?

Until two weeks ago, my parents house used one water heater ( noted "1" on the picture) to provide two bathrooms and the kitchen with hot water. The bathroom on the first floor consists of a bathtub ...
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0answers
14 views

Water heater not heating water

Installed new electric water heater. Installed timer. Installed 60 amp double breaker at main panel. Installed sub panel 30 amp double breaker. I'm getting power to the 30 am sub panel and to the ...
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2answers
89 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
18 views

Hot water problem in 2nd bathroom

We have a 2 story house, in the 2nd upstairs bathroom the bath hot water is cold but the basin runs hot then scalding (both are mixer taps). The shower fluctuates between OK and cold. All other hot ...
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2answers
79 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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0answers
42 views

Gas water heater auto-shut off when water supply fails?

I recently purchased an off-the-grid summer home. Solar, water collection, and propane for hot water, fridge and freezer. Everything works incredibly well. But we often leave for a few days at a ...
3
votes
1answer
5k views

Is there a specific NEC code specifying the distance between water heaters and electrical panels?

I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water ...
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1answer
28 views

Best option for DIY water heater platform

16 year old gas water heater started leaking, so time to replace! The old water heater was on a 3-legged stand, and the stand is permanently embedded in to a concrete blob on top of the concrete ...
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1answer
33 views

Is there an electric tankless water heater that takes multiple electric lines as input?

I currently have a 50 gallon water tank in my house and I want to replace it with a tankless system. The primary reason to replace it is space. I recently installed 2 HeatWorks Model 1 units to test ...
3
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1answer
589 views

What are these valves downstream of my water heater?

Our water heater has two valves located on extended pipes perpendicular to the hot and cold water lines. When Spring hit, the maintenance people in my complex mentioned we needed to turn the valves ...
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1answer
46 views

Corrosion around hot water heater connection?

I installed an electric hot water heater about 3-4 weeks ago. Everything has been operating without problem and there have been no detectable leaks around the water connections into and out of the ...
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1answer
29 views

Why does water heater closet door jump open?

I have a gas water heater inside a small closet with a door. Sometimes that door jumps open a few inches, as if there is a blast of air pressure inside. This door even has a small vent in it. What ...
4
votes
1answer
90 views

Are water heater warranties really relevant quality of the product?

I have a new water heater with an 8 year warranty and I noticed that the warranty length is included in the model number. On the manufacturer's website I couldn't find any information about ...
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2answers
43 views

Gas hot water tank quit working and leaked

I came home from work today to find that the hot water wasn't working. I opened the area to my gas hot water tank and there's a large pool of water on the ground. I checked the pilot light and it ...
24
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7answers
6k views

Are water boilers dangerous when showering?

Where I'm from (Serbia) everybody says to turn off the water boiler (the container that heats up water and stores it for use in the bathroom and shower) when you take a shower or use the bathtub. They ...
2
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0answers
48 views

Possible cross over issue with water lines

About 2 weeks ago our hot water started getting less and less hot, now it is completely cold. If I turn the cold angle stop off at the sink, so only the hot water line can feed the faucet, and turn it ...
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0answers
26 views

How to shut off both cold water and hot water?

I want to install a new basin tap mixer in my bathroom but I cannot find the valve to off the hot water. I can see the cold water valve is under the sink in the kitchen. Here is the water heater on ...
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1answer
40 views

Minerals when draining water heater

Per the instructions with my new water heater, I drain a gallon from the bottom every month. The previous owner of my home never did anything and that water heater started leaking, hence the ...
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0answers
14 views

Getting at water heater anode AO Smith ECT40-200

I found this spec sheet for my water heater which shows where the anode is. However I'm not so sure which of two ports is the anode. Here's a picture. In the spec sheet diagram it seems the anode ...
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1answer
2k views

Why is boiling hot water coming out of every faucet, and even the toilet?

Help! I live in a 80 unit condo (8 floors), with hot water tanks on the top floor (4). They flow down 13 different lines to different units and hot water is recirculated through recirc pipes. ...
0
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1answer
54 views

How/where to put hydrogen peroxide in water heater

I just moved into a house that has 2 water heaters. The second one was rarely/never used by previous owner and all the hot water that comes from it is smelly. This came up during the inspections but ...
2
votes
2answers
78 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 ...
4
votes
2answers
2k views

What's the next step in troubleshooting my electric water heater?

We have a SpaceSaver (Model number: SS012SEB15), single-element 120v/1500w hot water heater which worked great until one day it went completely cold. First thing was I tested the voltage to the ...
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1answer
26 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 ...
4
votes
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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vote
1answer
57 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
31 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?
3
votes
2answers
82 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.
3
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2answers
163 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 ...
3
votes
2answers
105 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
107 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 ...
1
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1answer
74 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, ...