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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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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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18 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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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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40 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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32 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
29 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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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
33 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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23 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
34 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
43 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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33 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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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
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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
74 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
46 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
28 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
41 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
54 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
42 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
225 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
48 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
31 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
157 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
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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
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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
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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
42 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
64 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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28 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
87 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
45 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
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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
80 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 ...
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3answers
91 views

Can I have a tank fed water heater in line with a tankless water heater?

Long version (skip below for tl;dr) I recently purchased a new house. (first owner) 3 floors, unfinished basement where the hot water heater is located. Approx 3300 sq ft. When looking through the ...
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Effect of troubleshooting gas hot water heater on gas boiler

My new gas hot water heater doesn't heat -manufacturer said shut off cold water intake valve for 1 hour, then check temp of water out of release valve and call them back. It appears that shutting off ...
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1answer
33 views

Standard water heater outside the house?

A guest house built with one bedroom also had a nice sized portion left unfinished for storage and freezer space. We have decided to finish this area, making a second bedroom. Currently the 50 gal ...
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4answers
67 views

Efficiency of a heat pump water heater during the winter

In my understanding, heat pump water heaters pump energy from the room around the water tank into the water. Clearly, this must be energy efficient in the summer time, especially if I am using AC ...
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4answers
177 views

Can my home's power supply handle this tankless water heater?

So my home was built in 1960 and 15-20 years later another room was added on. There are panel boxes everywhere ha. I have mapped it all out and isolated almost everything. Anything that is ...
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3answers
83 views

How does water flow through my water heater and up to the top floor without a pump?

My house has a gas based water heater(geyser) on the outside. The plumber has connected it such that without the use of electric pump, just through pressure alone, hot water reaches the 1st and 2nd ...
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1answer
60 views

How should I treat and store an unused water heater to protect it?

We have turned off one of our gas water heaters because we simply have low demand. What we wonder about is how to treat the mothballed heater? Should we leave the water in it? switch between water ...
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2answers
130 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
471 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
57 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
53 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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34 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 ...