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
55 views

How does cold water pressure get used by a hot water heater to produce hot water pressure?

Recently I had to change a washer in the shower for my hot water tap. I couldn't find the pressure tap for the hot water on my hot water boiler. I asked a friend how to switch off the hot water ...
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1answer
48 views

Water Heater/Paying Upfront [on hold]

I am in the process of replacing my water heater which is currently under the manufacture's warranty. My plumber informed me that the distributor is requesting I pay upfront while they submit the ...
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1answer
25 views

Wire size for water heater

I'm installing a instant on demand water heater that requires a 220v - 40 amp circuit and would like to know what size wire is required for a 50 foot run. ??????
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2answers
51 views

Should anode rod avoid touching bottom of Water Heater?

I want to get a replacement anode rod for my water heater. I have a 40-gal tank measures 56" top-to-bottom, excluding legs. It seems the anode rods (multi-sections) come usually in 42-44" or 54". If I ...
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1answer
30 views

Recirculator pump hot water

I currently have the Watts Recirculating system, pump Model 500803, on my water heater with the bypass sensors located under two areas in the house. We have enjoyed it. The con on this is that the ...
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2answers
69 views

Is it a bad idea to tie output of hot water heater to sump pump drain?

I bought a house and I have a leaking hot water heater (appliance is from 2001). I'd say it fills up an 8 ounce cup after two hot 10-15 minute showers. I had a plumber come out and he replaced the ...
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0answers
22 views

Rinnai tankless water heater service cost

My tank-less water heater stopped working with an error code 11. I had somebody out to take a look at it. relatively quickly we went through the troubleshooting steps and concluded the flame rods/...
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1answer
40 views

Turned off gas to water heater - should water be coming in?

My water heater has a bad thermocouple and striker. I’m having to replace the entire assembly and waiting on the parts to be delivered. I noticed today that I no longer get any water from the tank ...
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14 views

How to connect a new water heater (with side T&P valve) to this existing T&P discharge tube (from water heater with top valve)?

The picture above shows an old water heater (located in detached garage) that I'd like to replace. Notice that the T&P release valve, which is on the top, connects with some piping over to a ...
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0answers
39 views

Moved into flat, cold water tank leaking, can it be removed?

Background I've moved into a flat recently and have been renovating. I'm doing all the work myself - have installed a new bathroom, new kitchen, new shower and cistern etc. and now I've realised the ...
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1answer
37 views

How were these copper pipes attached to the T&P discharge valve likely connected?

In the rental house I'm in now, the T&P release valve on the water heater is connected with copper discharge tubing which exits the garage. See this picture . The right-side of the pipe seems to ...
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3answers
63 views

Water heater working when flushing a toilet

I have a tankless water heater. After I finish to use hot water and I close the faucet, the water heater starts a fan and make a typical noise, it's very typical and expected. I guess it blows off ...
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1answer
47 views

Gas hot water tank leaking - water turned off, what about gas? Repair or replace?

My water heating tank has sprung a leak - out of the top (fortunately?) Whoever installed this thing didn't do a proper job of preventing galvanic corrosion, so the tank input is corroded (irreparably,...
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26 views

Can I discharge water heater condensate outdoors?

I'll be installing a condensing tankless water heater that has a condensate drain. Can I discharge this line outside instead of into sewer?
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1answer
49 views

Overflow line tied with Condensate Line

had a house inspection done and the inspector told that Irregular materials were used, I am attaching a pic. how much work is it to repair it? is it a easy fix? Thank you
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1answer
42 views

Planning to switch to a tankless water heater

I am planning to convert to a tankless water heater but have a few questions to make sure I am on the correct path. I live in a rowhouse in Philadelphia where natural gas is used for heat and my ...
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0answers
37 views

Corrosion due to dissimilar metals or bad ground?

I'm a 1st time home owner but experienced DIYer here. Unfortunately I have little plumbing experience. I installed a hot water recirc. pump at my hot water heater about a month ago. I did not notice ...
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2answers
36 views

Water heater magnesium rod

Our water heater is less than 3 years old and I am starting to hear small particles bouncing around inside what the thing is heating up. Our old water heater never did this and was 22 years old both ...
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0answers
23 views

Gas Water Heating

When I turn on a cold water tap including the garden hose my instantaneous gas water heater starts up.I have turned the hot water valve off at heater and checked that ALL hot water taps have no flow ...
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1answer
39 views

Water Heater on/off switch

My water heater and dryer are connected to the same circuit breaker. Consequently, when the washer-dryer combo is in use the water heater (tank type) is working too and consuming electricity. Can I ...
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0answers
25 views

Sediment buildup in water heater from downstairs flat

I recently moved into an apartment that was built in the 60's, and can hear a "popping" noise from the bathroom wall, almost constantly. After doing some investigating, it looks to be sediment build ...
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1answer
36 views

Can lost water pressure cause a water heater to leak/rupture?

I woke up this morning at 5 am to my water heater making loud noises. It had leaked all over the floor and the bathroom sink had a steady stream of hot water that wouldn't turn off. This water heater ...
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2answers
49 views

Gas Water Heater and Water Shut Off

My house and my neighbors' houses are going to have our water shut off from 9:00 am to 4:30 pm this week by our Water and Wastewater District. I called the manufacturer of the water heater and also ...
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1answer
26 views

Identifying a Manual Gas Shutoff Valve for Water Heater

I've been reviewing some instructions before flushing my water heater - and one of the first instructions is to shut off the gas valve to the appliance. The trouble is, I'm just not certain enough to ...
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1answer
34 views

How to measure electricity used by hot water heater

I am debating the effort to save on electricity costs with my electric water heater. Solar water panel heater, hybrid water heater, etc. Before I go down that path, I want to track the cost of the ...
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0answers
33 views

What size anode do I need for this tank

I have an old pressurized hot water cylinder and I am trying to change the sacrificial anode however the local plumbing stores seem to only have anodes for models they currently sell and also I'm ...
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1answer
53 views

How to troubleshoot gas supply not making it to some appliances

I recently purchased a home and once utilities were turned on I've been having issues with certain gas appliances. Some appliances required a normal amount of time to get the gas flowing after being ...
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2answers
103 views

Is storing hot water over 140F a regional requirement?

It seems to be "common knowledge" that to help prevent Legionella, hot water tanks/heaters should be set at 140F. This temperature is enough to cause terrible burns and scalding so devices like ...
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4 views

Composite Scale Reducer in Britony Flexiflue can it work without it?

I have got the above that is to be replaced with a new system very soon. I don't want to pay £60 to replace the leaking one I have, any ideas on what I can do, tempory fix or do without it if the ...
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1answer
83 views

Can I have two different types of water heater in the same house?

I currently have an indirect fired 55 galon water tank. The house is pretty big and the former owner had a second, power vented water heater on the other side of the house. It seems he also had the ...
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1answer
55 views

How to clear a copper water line in the concrete pad?

I replaced a gas hot water heater. I opened the valve to fill it while the faucets were off.( The gas is not yet turned on.) Then opened the kitchen hot ,of course a blast of air then some slightly ...
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1answer
30 views

New water heater and expansion tank - low pressure

Replaced a 20+ year old natural gas 75 gallon water heater recently with an equivalent model. The plumber said an expansion tank was required per code. Two things I’m noticing now with the new set ...
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1answer
53 views

Can you shorten class B water heater vent pipe?

New gas hot water heater is 5" taller than old (of course the same size would be too easy).Flex water and gas lines -no problem; but the class B ( double wall ) exhaust vent is ? Can it be cut? How? I ...
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1answer
74 views

How should I terminate water heater drain pan?

I have a water heater drain pan installed and I'd like to terminate it as close to code as is possible. The pan/water heater is currently in a closet that barely fits the pan. So unfortunately, there ...
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2answers
47 views

Bradford White water heater: burner making loud noise towards the end of the heating cycle

I have a Bradford White gas water heater. By coincidence, we noticed that the burner flame pops all of a sudden and a big flame starts up in the unit (see video for location). I sat for an hour in ...
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1answer
514 views

Hydrogen peroxide to clean water heater

As I pour in the peroxide, in a few moments it bubbles back out, even doing just an ounce at a time, I removed 6 gallons of water before starting. Why is it coming back out of the heater?
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2answers
154 views

Tankless Water Heater and turning off main water supply

I presume there must be plenty of protections for such a case, but is there any reason to be concerned if I turn off (or my fortrezz value and smartthings turns off) my main water supply and my Rinnai ...
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1answer
32 views

Electric water heater T&P popping off

I am having a problem with the T&P valve opening continuously, on & off. I found the T. stats where bad due to temp settings 140 degrees replaced, the expansion tank full of water replaced ...
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4answers
323 views

Do my washing machine and dryer need to be close to the water heater?

I just purchased a house and near the kitchen it has a location for the washing machine and dryer. The water heater is near by in a separate cabinet. I would like to move the washer and dryer into the ...
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4answers
5k views

Is my plan for fixing my water heater leak bad?

Here is the situation (with pics): See that pan on the bottom? The hole in it is covered by tape. So here is what I was gonna do. Is this a good idea? First. I've gone out and purchased a new pan ...
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1answer
21 views

Is my indirect fired hot water heater hooked up correctly?

I have an indirect hot water heater HTP/Superstor SUU-119 and the heating loop looks like this: I am wondering whether this is correct because it seems weird to me that what appears to be the supply (...
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2answers
36 views

Does the circulator in an indirect fired water heater point towards the boiler or towards the tank?

In the manual for my SSU-119 indirect fired hot water heater, the following text seems to suggest that the circulator points towards the tank: On the water heater, the boiler supply connects to the ...
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1answer
46 views

Can you identify the spigot attached to this water heater?

I have a corrosion problem on my new indirect fired water heater. HTP technical support, the company that makes the heater, wants to know the alloy of the spigots attached to the hot water inlet and ...
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2answers
71 views

Should I replace a water heater preemptively?

I have a conventional gas-fired 40-gallon hot-water heater in my basement. It currently works fine, and there is no visible rust on it or pipes near it, but it turned 20 years old a few months ago. I ...
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0answers
15 views

Found out expansion tank for water heater was bad after leak. Should I change connection that leaked?

My home has PEX pipes. The PEX pipe runs under the sink and has a fitting that goes directly on the bottom of the faucet. I noticed that the hot connection would leak about 30 mins after a shower. Did ...
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0answers
43 views

bath faucet is hot but shower head always turns cold

My shower has a single lever that turns from right (cold) to left (hot). When the lower bath faucet runs the water comes out hot. But the upper showerhead never heats up. If I run the lower faucet ...
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2answers
90 views

Can I turn the water off at the street to work on my plumbing?

My angle valves under sink are hard to reach with garbage disposal in the way. Can I turn the water off at the street to change parts in faucet, or will this drain my gas hot water tank?
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3answers
48 views

Which is cheaper? Tankless or Storage water heater?

We are planning to build a family house, 2 adult, 2 child, 100m2, eastern EU. We got stuck that what kind of water heating should we use. Where we use hot water?: shower kitchen sink in bathroom ...
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1answer
23 views

How can I winterize a set of Polaris heating units?

We have 11 cabins that have Polaris water heaters with a copper tubing system that uses a blower to create the heat for the cabins. We live in an extreme winter climate and sometimes the water ...
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1answer
183 views

Water Expansion Tank precharged at 25psi. House pressure at 70

I have a water expansion tank (5 gallons) installed on a new water heater (40 gallons) and my houses PSI is at 70-80. The tank came precharged at 25psi. I know that I am supposed to match my home ...