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
12 views

Rinnai tankless on-demand water heater making a high-pitched whistling sound

I have a Rinnai tankless on-demand water heater. The unit is making a high-pitched whistling noise. I have: -Unplugged the unit from the electrical wall socket. -Turned the gas valve to the off ...
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1answer
47 views

Unable to turn knob on Rheem hot water heater to pilot

I have a Rheem heater (Model# PROG50-38N RH60). The pilot has gone out. This tutorial suggests I must turn the knob to pilot to start the process of relighting the heater. When I try to turn my knob ...
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1answer
40 views

Yellow droplets from ceilling after water heater leak

I live in condominium, I got water pouring from upstairs in my store room. When I asked my upstairs neighbor he said that their water heater leaked. For 20 minutes or so I saw clear water coming ...
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2answers
35 views

Water heater problems after water was shut off

I just purchased the house and I did not convert the water utility into my name in time and it was shut off. (The water will be off for 4 days as its the weekend). The water pump on top of the ...
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1answer
28 views

Draining 2 series connected water heaters?

I have 2 series-connected water heaters. I have sediment showing up in my shower head clogging it. So I am thinking I need to flush my water heaters. I understand if I have 1 water heater to shut ...
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1answer
30 views

Why is the water pressure suddenly high in my toilet after hot water heater replacement?

I got my hot water heater replaced this morning. Immediately after the water pressure in my toilet became very high. When flushed it’s so forceful I jump. I noticed a noise when the guys were still ...
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0answers
48 views

Safety group on tanked water heater

I have recently installed a tanked water heater. I have installed the safety valve that was inside the package, at the cold water inlet. Something strange happened yesterday. The city cut the water ...
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1answer
30 views

TriangleTube Smart 30 digital thermostat

I have a TriangleTube Smart 30 indirect water heater which unfortunately only comes with an analog (red top blue dial) thermostat. I would really love to find a way to get a digital thermostat on it ...
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0answers
61 views

Is this a drain-pipe?

I am about to install a water heater in our condo. This is inside the house so I want to be careful about possible leaks. I am putting a drain pan underneath it and need to connect it to a drain ...
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0answers
28 views

Preparing a water heater for storage

I am in the process of gutting two houses. One has an electric water heater, and the other has a propane one. As I am taking the systems offline, how can I best prepare the units for storage? I think ...
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1answer
25 views

No shutoff valve for tankless hot outlet

I just had a tankless water heater installed and I noticed that although it's recommend by the manufacturer, the installer did not add a shutoff to the hot water outlet. Will this cause any problems ...
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0answers
33 views

How can heat pump water heaters be more efficient when they just use heat from heated space? [duplicate]

I understand the principle of heat pumps, and it makes sense that a heat pump / AC split system is more efficient then for example resistive heating for heating a house. In this case, the heat pump ...
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54 views

Trying to replace this leaking heater with a tankless, need help with the piping

Just moved into this house, South Florida, two stories, the heater is leaking and I'm replacing it with a tankless. I'm not sure how to plumb it since now I realized I have more pipes coming and going ...
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3answers
276 views

Replacing conventional: electric hot water heater with tankless

I have a 30 gallon electric conventional hot water heater that started leaking. It is in a cabinet above the washing machine; a tight fit: Since it is such a cramped space, I'm considering a ...
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1answer
112 views

Tankless water heater causes magnets (ceiling fans, induction oven) to hum while actively heating water

I replaced a tankless water heater with the same model, but a couple of years newer. (The original was damaged by careless house painters). This is a 13 kw Rheem unit and on its own circuit. Since ...
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0answers
45 views

Can a loss of power cause a dry fire condition, or vice versa?

I had a Rheem Prestige Hybrid Electric Water Heater installed on in my pacific northwest home last November. In January, one day our breaker tripped twice, for no apparent reason (no abnormal or heavy ...
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1answer
75 views

Do I need a floor drain for the water heater in my townhome?

I’m looking at replacing an 11-year-old water heater as the hot water has become extremely discolored recently. I have flushed it twice in five years (I know, not enough) and could never remove the ...
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0answers
86 views

What would cause a terminal to explode like that on a circuit breaker switch?

My landlord was having his fun turning on and off my stove and hot water to get me to move out instead of fixing broken windows. As soon as the police got involved and my lawyer sent a notice, he had ...
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2answers
62 views

What else can I try to resurrect my kitchen faucet?

I flushed my water heater today, and carefully turned a faucet back on that had the aerator removed to hopefully flush sediment out through that one. After that, I did the rest of the house faucets. ...
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1answer
54 views

Top element is drawing amps but no hot water drawing 19amp

I have 240v at the water heater and drawing 19amp at the top element but no hot water after 1 hour
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2answers
63 views

Upsizing Gas Line From Tee

I need to upsize a short 1/2" run to 3/4" (it splits from the main line using a tee). This is about 4-5ft long and goes into an appliance directly. Would it be OK to remove just the pipe and ...
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3answers
214 views

Why is this apartment water heater so much more expensive than my bigger home one?

A friend living alone in a 2 bedroom condo needs a new water heater and has been quoted over $4000 from multiple plumbers to replace the one pictured. I live in a 6 bedroom house with 7 people, I ...
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0answers
38 views

How to get hot water

Hot water not working in house that I am remodeling. I’ve never seen this setup before...canceled out water heater with pilot light on?
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2answers
66 views

Can I use existing 40 AMP breakers when the item calls for 30 AMP

My tankless water heater stopped working and I purchased a new but slightly smaller one. The description on the website said that it used the same wiring as my last one (3 40 AMP breakers and 8/2 AWG ...
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0answers
35 views

Electric hot water heater, no hot water after main break in city

Electric hot water heater is not working after a nearby city water main break. Switched circuit breaker off and on and also hit reset on the heater, but still nothing. Water comes out of hot faucets, ...
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1answer
53 views

Gas Water Heater leaking water out of the temperature and pressure valve. Could the water pressure regulator contribute to the issue?

Edit...I do not have an expansion tank or pressure gauges. The “leak” was water pouring from the valve due to pressure or temperature. Lots of calcium build up on the “down” tube attached to the ...
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2answers
53 views

Direction of tap out of water heater

Sorry for the weird question, but here goes. I am planning to install an electrical, tanked water heater. For the inlet, I will screw a pressure relief valve directly in the cold water pipe, and screw ...
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1answer
59 views

Move water heater to location with smaller diameter pipes

My current tankless, instantaneous gas water heater is placed in a location where pipes in and out of it are 3/4''. I was planning to remove it and install an electrical, tanked water heater, in a ...
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0answers
25 views

Dialectric water heater connection

I noticed a lot of corrosion around the connection between the nipples coming out of my water heater and the flex connectors. The nipples are regular galvanized steel. Is this corrosion of dialectric ...
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1answer
60 views

Adding a Tankless Hot Water Heater after a 40 Gallon DHW Tank to extend Hot Water Supply

I have a 40 gallon tank supplying hot water to 3 tenants (and sometimes their significant others) in 3 bedroom rental home. The 40 gallon does not provide sufficient hot water, so I would like to hook ...
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0answers
20 views

Use split for washing machine and tank water heater

I am planning to install an electrical water heater of 200L somewhere I already have a washing machine installed. Therefore I am planning to put a simple Y-split (a very simple connector that ...
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2answers
71 views

Change location of water heater

I have a gas water heater inside my home at the moment. I am planning for the work to remove it, and install a new electrical tank-based water heater, at a different location. The new location is just ...
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0answers
26 views

Electric Hot Water Heater flaky thermostat

I have been experiencing some isssues with hot water not lasting long enough with our "new" hot water heater. I had to replace it last May, and took the opportunity to increase the tank ...
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1answer
71 views

After a water main line repair on our street, our hot water stream for the bathtub suddenly is very weak. Could the pipe be clogged by debris?

Situation as described in the question. We first suspected a partial freeze (temperatures have been extremely and unusually low here in Austin), but even after hours of running the steaming hot ...
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1answer
62 views

Water only come from hot water faucet when I turn on both

I have a situation where all hot water faucets in my home give me a dribble and eventually turn off. However, if I turn on the hot and cold, and turn on another hot water faucet nearby, then the ...
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3answers
169 views

How do I determine how much water is in my water heater's tank?

We are in S. Texas experiencing record breaking cold weather. Have had hot water since this began. Today, third day into double digit temps, city announced broken water pipes and water boil notice. ...
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1answer
60 views

Hot water turning cold in pipe at branch line

I'm experiencing a problem where I'm getting hot water out of one bathroom sink (the closest to the water heater), but luke warm water at best in all other places. I crawled under the house to follow ...
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1answer
92 views

Does my boiler try to heat water in my tank if it's already hot?

I've got a combi boiler which heats the hot water tank using the indirect method. I use Hive to control it. I'm trying to work out: if the hot water is set to on for an hour, will the boiler ...
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2answers
66 views

How to heat a bathtub when the water heater isn't doing enough?

I have a big tub and a small water heater. I live in an apartment so there's not much I can do about that right now. I've looked into immersion heaters and from what I can tell they aren't meant for ...
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2answers
118 views

How can I prevent frost buildup on a concentric water heater intake?

I have a hot water tank with a concentric PVC vent that's both an intake and exhaust for the tank. Whenever it's -30 celcius and below (I'm from Canada), the air intake on the concentric vent clogs up ...
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1answer
80 views

Can I use dedicated pool heat pump for heating water in the house?

I'm going to buy a small heat pump dedicated to pools (around 3.5 kW total output). The pump would not be used for 6-7 months a year (autumn/winter); can I plug it into an existing water heating ...
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1answer
48 views

Replacing control board of water heater - need to adjust integrated sensor, but lack tool to do so

I finally received the control board for my water heater. Upon reading the instruction manual I found the following note: "When replacing the control board the size of the container of the water ...
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3answers
167 views

Will an in line water regulator fix my tankless water heater trade off between pressure and hot water?

I had a contractor install a Rheem electric tankless water heater in my casita. I initially wanted a much larger one but he talked me into the Rheem 13 KW 2.54 GPM. When the unit was installed the ...
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2answers
112 views

What prevents rain or snow from going down a concentric vent?

I am looking to possibly install concentric vents through the roof for two tankless water heaters I have. But I am concerned about rain coming back down the vent and damaging my water heaters. All ...
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2answers
22 views

my hayward electric spa heater isn't heating as well

The 2 elements when taken out, test at 10 ohms each, but when one is inserted in heater and wired, it still tests 10 ohms at screws, but when 2nd in also inserted and wired to thermostat, the ohms ...
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0answers
53 views

Water heater boiler has nasty red sludge leaking out of it

My water heater wasn’t performing as expected today while attempting to draw a 2nd bath. So I went to look and the rusty water leak seemed somewhat prominent, so I’ve gone ahead and opened up the unit....
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4answers
1k views

Replacing toilet shut-off valve and need to turn off water; Need to turn gas water heater to pilot?

I'm replacing a toilet shut-off valve (clean water flowing into tank) on the first floor of my (100-year old) home. I'm reading that I need to shut off the water, then drain the lines, before making ...
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2answers
45 views

A newer gas hot water heater keeps getting colder. Where is the first place to look?

We had a new hot water heater installed 1-2 years ago. It worked great up until about 2 weeks ago, where we all noticed that it no longer was heating to the same temperature. I can continue to crank ...
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1answer
39 views

New Rheem RTG-84-XLN-1 Error 12

I just installed a new Rheem RTG-84-XNL-1 tankless water heater. The unit has been throwing error code 12 off and on since it was first run. The manual and their tech support only entertain the idea ...
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2answers
529 views

What does 4/2 AWG with ground mean

My electrician is installing a tankless water heater he told me to get 4/2 AWG with ground for 240v. I went to Home Depot and they have no idea what I’m talking about. Can someone tell me what I need ...

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