Questions tagged [hot-water]

Questions about systems that produce and distribute heated water.

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1answer
67 views

PEX pipe burst: what else needs to be fixed to prevent it happening again?

I'm a renter in NYC and our 4-story building has recently-installed (within the last 8 years) baseboard hydronic heat. All of the tubing is PEX, except for from the boiler itself (as required by code) ...
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3answers
46 views

Hot water without hot water supply and electricity

I have a tap in a room where I only have a cold water supply. Also I don't have current electricity nearby. Is there any way to provide at least lukewarm water there?
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2answers
106 views

Black greasy specks in sinks, dishwasher, etc. at home

We have been noticing black specks that leave a greasy trail when smeared in our bathroom sinks and on dishes washed in the dishwasher in recent weeks. After some research, I find that the 2 main ...
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2answers
50 views

Hot Water Heater leaks through drainage spigot after flushing

I flushed my hot water heater several months ago. Ever since, it has leaked through the drainage spigot. I've tried to tighten it to a point where it looks like it stops, but it starts again soon ...
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1answer
49 views

Hot water heating recommendation

I'm looking for a recommendation on the best course to update our hot water heating system.Some background: When we moved into our upstate NY, 2200 sq. ft. home five years ago, the home was heated ...
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0answers
36 views

Hot Water Inconsistency

I've recently noticed an issue with the hot water in my shower. After I start the shower water flow and wait for the warm water to start coming out, it stays warm for about a minute, then it gets ...
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1answer
38 views

Can a shower mixing valve leak water from cold to hot lines if there is no pressure on the hot line?

My hot water heater started leaking today, so I turned off water to my house at the curb. After the tank was drained, I disconnected the cold line and turned off the valve right above the hot water ...
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2answers
34 views

Question on New Shower Install Pipe Sizing

I am currently remodeling my bathroom downstairs (same floor as the water supply entry to the house). I want to install a Moen U thermostatic valve with (two) 1/2" inputs and (two) 1/2" outputs. I ...
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1answer
128 views

Hot water comes out once toilet is flushed

I turn on the hot water faucet and cold water comes out. This happens everywhere around the house. Once I flush the single toilet that's on the first floor and wait 1-2 mins, hot water starts pouring ...
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1answer
20 views

How do I purge the air from a hot water furnace with zones

I want to try and bleed the air from my hydronic ( baseboard ) heating system. It's a natural gas system, I think I understand the basic functionality but my system seems to be a bit unusual and I'm ...
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1answer
47 views

Hot water leak from heating system

I discovered there is some hot water is leaking from what seems to be a pressure release point of my heating system. I am not very good at plumbing so i will probably hire a professional if this is ...
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0answers
14 views

White residue on flow heater pipe

My flow heater (Vaillant VED E 18/7) stopped working when I switched a breaker off. Upon opening the casing, I found out two things: 1: The water intake pipe has a small white discoloration and seems ...
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17 views

Bradford White Water Heater Loud Noise (No vibratrion; Exhaust sound)

Tonight our hot water heater starter making a loud noise that sounded like gas escaping from the bottom of the unit. I've provided a video for reference. I'm an amateur when it comes to this stuff, so ...
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4answers
5k views

How do electric hot water heaters explode and what can be done to prevent that from happening?

My neighbor and good friend is a union steamfitter, and general handyman. He had to replace his electric hot water heater last year and he did it himself. My wife and I have to replace ours now, and ...
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1answer
52 views

Dishwasher not getting hot water

I'm trying to find out if this is a Bosch dishwasher problem or plumbing problem before making call to right repair shop. My dishwasher does not have heating coil. We moved dishwasher from left of ...
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1answer
37 views

Electric water heater stopped working when I adjusted the thermostat

I have a Craftsmaster 40 gallon electric water heater that is approximately 13 years old. Once it got cold outside and we started taking more hot showers, I felt like we were prematurely running out ...
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0answers
19 views

Hookup Nest Themostat & Heatlink

I'm in the UK and trying to install a Nest Thermostat & Heatlink at home to control my hot-water and central heating and I'm having a few issues working out how my existing setup works so I can ...
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1answer
78 views

What is the official definition of first-hour delivery of hot water tanks?

I am looking at getting a new hot water tank. In deciding between a 40 gallon and a 50 gallon, I discovered that the 40 gallon has a higher first-hour delivery rating than the 50 gallon (see this spec ...
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2answers
76 views

Why would turning on/off hot water when the toilet is flushing cause the tankless pressure relief valve to release water?

I noticed the other day that my tankless hot water tank was occasionally spraying water all over the place from the Pressure Relief Valve. The only way I've found that seems to reliably trigger this ...
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2answers
58 views

Installing Tankless Hot Water System - Amp Questions & Using AWG 6 Wire with Current Tank

I'm looking into researching about installing a Hot Water Tankless system. Specifically I want to install the following: Rheem Tankless Water Heater 2.14 GPM 13 kW Self-Modulating Electric Wall ...
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0answers
24 views

Is my CH/HW fully pumped? Is it two-pipe?

I'm having problems understanding the exact configuration of the CH/HW piping in my house. In particular, I have to understand where and how to place piping for additional radiators at the upper floor....
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0answers
47 views

Tankless Hot Water Recirculation

I recently had a Rheem Tankless Water Heater installed. The rtgh-95dvln-2. They installed the pump kit meant for the water heater, the ap17920. However, I do not have a dedicated recirculation line, ...
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0answers
38 views

Tankless hot water system only providing luke-warm water?

I have tankless hot water which has been working well up until this week. A week ago we discovered a leak on the hose from the propane tank, so we replaced the hose, but since then it hasn't seemed ...
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1answer
35 views

Hot water cylinder (direct heating), loosing heat and pressure during the day

I moved into a new property a few months ago with a direct heating hot water cylinder. This is a new one for me as I have always had a gas combi boiler before. I have economy 7, so the water heats ...
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1answer
47 views

How can I figure out if a Combi Boiler will be adequate for my house?

We recently moved into our new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, it's done its job and in need of a replacement. We had ...
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3answers
615 views

Can I run a gas hot water heater on propane?

I have property where I am boon-docking an airstream. I've been looking into a passive solar hot water heater design, For the holding tank I was looking at using an old hot water heater, I found a ...
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2answers
32 views

Thermostatic mixing valve that holds water temperature at 120°F / 50°C

I've recently installed solar hot water and as expected it gets extremely hot. I would like to keep the tank as hot as possible (>180°F) and simply mix down the water to 120°F / 50°C as it's used so ...
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1answer
65 views

Chlorinate hot water heater

I left town for a week and now have a hot water heater that's been sitting and apparently breeding bacteria resulting in an abundance of hydrogen sulfide. It stinks really bad. I tried emptying it ...
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1answer
102 views

A water heater pressure relief valve/pipe is guided to release hot water outside of the pan (see picture). Is this installation correct?

A plumber installed the hot water pressure relief pipe to point outside the water heater pan, as shown in this picture (on the right). What could be the reason to do so? Is this recommended/proper ...
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1answer
52 views

Intermittent cold water from the hot faucet

Why would cold water run from the hot water faucet (for about a minute), after the hot water was already flowing? This happened in two washrooms, at different sides of the house, but not at any other ...
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3answers
77 views

Can you use aluminum foil around gap at floor of hot water tank then seal?

Fairly big gap at floor around pipes of hot water tank. For mice prevention I read some where you could fill gap with aluminum foil then seal. Is this correct. If so what kind of sealant should be ...
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1answer
27 views

Hot Water Water Hammer When Cutting Off Cold Supply

The house is 3 years old. This just started to happen. When you cut off any cold water supply the inlet line to the water heater knocks or water hammers. The first attempt I cut the water off at the ...
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2answers
102 views

Flushed water heater yesterday got a lot of sputtering right after that and today hot water is not flowing with the same pressure as before

Yesterday I decided to flush my water heater and I did the following: turn to pilot turn off cold water supply to water heater open valve and drain hot water. I noticed it was still flushing for a ...
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1answer
66 views

Water heater busted

Water heater busted this morning, after a couple of hours the water was turned off at the main in the yard. Now how can I cap off the hot water heater in order to still have water in the house, I can'...
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0answers
29 views

Using existing hot water vent for extraction

I have a room in the basement with equipment (computers) that gets really hot. There is an ac vent but the thermostat is nowhere near the room. Also in an alcove is the hot water heater behind a ...
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2answers
32 views

Why does a system boiler with hot water cylinder not use a diverter valve?

I understand that it doesn't need a diverter valve... But I was thinking, couldn't the system be more efficient with one? For example, the central heating could run at a low temperature (35°-40°) and ...
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1answer
66 views

cheap hot water tank failure after 3 1/2 years - expected, luck, installation problem, acid water, pressure cycle?

This "6 year" hot water heater failed after 3.5 years - is it bad luck (eg normal for the $429 box store 40 gal DHW heaters and how they make money off what I expect is a pro-rated warranty?), poor ...
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1answer
51 views

No hot water after teeing to outside spigot

I recently saw an outside cold and hot water spigot on This Old House. After checking out prices, I decided I'd make my own redneck warm water spigot by bringing a hot water line close to the outlet ...
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0answers
25 views

How to hookup an InSinkErator hot water dispenser to a Waterstone Hot/Cold Faucet

I'm trying to figure out what to do with the 3rd connector on my InSinkErator H-CONTOUR-SS. I have a WaterStone hot/cold filtration faucet model 1400HC-SS that doesn't have a connection for that 3rd ...
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1answer
71 views

How to prevent galvanic corrosion on water tank inlet

My current hot water tank, presumably installed by a DIY former homeowner, has severe corrosion on the inlet tube and must be replaced due to a considerable leak. Were I to DIY, how could I prevent ...
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3answers
369 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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2answers
112 views

Can I replace a 40A water heater breaker with a 60A breaker to prevent trips?

Double 40 amp breaker tripped as HD want work. Can I use a double 60 amp on my water heater?
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1answer
60 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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3answers
290 views

Dedicated Hot Water Recirculating System Woes

Two plumbers and no remedies to why my hot water turns cold (but not as cold as the cold water rather slightly warmer). This problem began to happen gradually and it occurs at every hot water faucet/...
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1answer
201 views

Keston C36 Combi boiler - Error E37

According to the boiler manual E37 Water pressure error - You must top up the water pressure for your system When opening the fill loop valve to add water pressure, water flows out the exhaust ...
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2answers
58 views

After replacing a recirculating pump (and pressure regulator), shower won't run hot

We've just had a our pressure regulator replaced, and a new recirculating pump installed. All 3 showers used to get hot water reasonably quickly (15-20 seconds). Now the shower furthest from the ...
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3answers
162 views

How do I get 150F water to the dishwasher?

I have read in a maintenance manual that the ideal temperature for incoming water to a dishwasher is 150F. In my house, the hot water heater is currently set to 135F and it cools on traveling around ...
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0answers
40 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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1answer
61 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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1answer
47 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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