Questions about systems that produce and distribute heated water.

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1answer
45 views

Water Supply Noise due to Thermal Expansion?

I have a plumbing issue that I'm looking for suggestions on. After using a substantial amount of hot water (say, a long shower + washing laundry) I will hear a loud rumbling / vibrating sound ...
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0answers
9 views

Replaced hot water tap, Water now runs cold

Had my mono kitchen tap (mono) replaced and now no hot water is running. We have running water its just running cold. All taps are running water, I also have central heating working correctly. My ...
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1answer
38 views

Electric water heater overheating

My electric hot water tank is putting out very hot water. Can I find out which thermostat is bad without an amp meter? The top one clicks off at a high temp, and the lower at a lower temp.
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1answer
26 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 ...
4
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1answer
109 views

Very low hot water pressure entire house

Setup: Electric 53 Gallon Heater, installed in 2014 by previous owners. Location: Tampa bay, Florida, Home built in 1961, typical cinder block house. WE purchase the home in December and all has ...
2
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2answers
114 views

Showers in house run cold after 30/45 seconds - Sinks scalding hot?

Have a two story house with kitchen, main bath, guest toilet and laundry room on first floor, and two bedrooms upstairs with one full bath each. The water heater is a 55 gal gas operated, located in ...
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1answer
20 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 ...
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2answers
46 views

Boiler heating extra zones

Background: This is a new house, with a boiler system I'm not familiar with. Instead of zone valves, each zone has its own pump (4 zones). There is a fifth pump on the other side of the boiler. Not ...
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1answer
33 views

Temperature of water in the shower fluctuates - will a cheap thermostatic tap help?

I recently moved to an apartment where temperature of water in the shower fluctuates and we called for a plumber. He either cleaned up or replaced one part (I think it was the mixer - nothing visually ...
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1answer
108 views

Hot water temp in shower/tub fluctuates

I live in a condo that has 13 units in two buildings and am the president of the board. A few months ago we had a new water pump installed in our boiler room. Shortly after that all three units in my ...
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0answers
44 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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1answer
68 views

Biggest size breaker in 200 amp panel

I am upgrading my service to 200 AMP. Since the location of the old service is behind a cabinet, we moved the main panel to a different area. This put it more than 15 feet away so we have a 200 amp ...
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1answer
38 views

Hot Water Heater Pressure Relief Valve Hissing and Discharging Water after Draining Tank

I just drained the hot water heater, as I do every year (using the following video for instructions: https://youtu.be/qqaehhGYV_I). This time, the pressure relief valve had a slight hiss after I ...
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0answers
28 views

hot water humming maybe Grundfos pump

There has been a humming noise coming from the hot water heater, and it sounds like it's coming from the Grundfos UP 15-18 B5 pump. The humming is constant 24 hours a day and from what I can tell it ...
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1answer
34 views

Least Destructive New Heating System? Hot Water or Air?

I'm having some issues with my current steam heating system. I'd rather get it replaced with a whole new system, either forced hot water or forced air. The house was built in 1916, so I'd have to do ...
3
votes
1answer
51 views

Why is the hot water in my tub fluctuating between hot, warm and cold?

I've been living for a year in a 1985 (or so) 8-floor condo in the NYC metropolitan area. The building is well managed. I have a kitchen and a bathroom with both a separate shower and a ...
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3answers
105 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 ...
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4answers
73 views

Is a tank-style water heater always under pressure?

Is a tank-style hot water heater always under pressure? In other words, is the entire tank pressurized? Is the pressure largely created by the force of the incoming cold water supply?
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2answers
105 views

What is coming out of these water pipes?

I have been dealing with some hot water pressure issues. See Should hot water pressure be reduced after hot water is used? Today, hot water pressure reduced so much it was impossible to shower. In ...
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2answers
23 views

Does my hot water tank have a bad element?

I have an electric hot water tank. Recently I've been noticing that the supply of hot water has gone down drastically. It will only be really hot for a couple minutes, warm for another 10 minutes, ...
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1answer
87 views

Should hot water pressure be reduced after hot water is used?

I'm noticing reduced hot water pressure (on all faucets/shower) after significant hot water use (2 long showers, 2 loads of HE (High Efficiency) laundry, and using a sink for about 5 minutes). Cold ...
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0answers
34 views

What is the minimum temperature to keep the hot water heater at? [duplicate]

Our hot water heater produces hot water, but not super hot, is there a minimum temperature I need to keep it at? I don’t like it when the hot water is scalding, but I want to be safe.
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3answers
5k views

Using PEX for a water heating system

I am replacing my existing faucet plumbing with red / blue PEX all over the house. Everything that goes to the sink, dishwasher, washer, bathroom sink and so on will be color coded and installed ...
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0answers
33 views

Risk of leakage when changing open-vented to sealed-system boiler

Apologies in advance for the long post. I currently have a gravity-fed, fully-vented central-heating (CH) and hot-water (HW) system (large cold-water tank and expansion tank in the loft, hot-water ...
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1answer
44 views

Are the resin beads inside old water softeners flammable?

Our old water softener just broke and released all the resin beads into our hot water heater. I've been draining it but a significant amount of beads went into the drain pan under the hot water ...
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4answers
647 views

How do I get an exterior vent to stop frosting over in a cold Canadian winter?

We have a high-efficiency gas-fired hot water heater (in our a basement) that is vented to the outside of our house. When the weather gets below -30°C the vent has a tendency to frost-over. When ...
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0answers
19 views

Heating system is heating the radiators instead of the hot water - why?

We have a heating system with a boiler, hot water cylinder and a controller to set the timers for the heating and hot water which it then switches between accordingly. Lately, it intermittently (I ...
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2answers
136 views

How can I know if my boiler is supported by Nest 3rd Gen thermostat?

Here are the pics How do I know if my hot water boiler is compatible with Nests domestic hot water control
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1answer
86 views

Hot water is coming out of all faucets brown

I live on the second floor in a condominium and had my direct vent hot water heater replaced approximately 8 years ago. At the time I recall having various vendors out to give me an estimate and very ...
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2answers
2k views

Desuperheater vs Heat Pump Water Heater

I'm having a geothermal heating system installed in my home, and the contractor recommended heating my water using a buffer tank and desuperheater, which is a device that cools the refrigerant lines ...
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2answers
109 views

Hot and Cold water seem to be mixing

Having a problem with hot and cold water seemingly mixing in my house where some locations can't get cold water and others get a mix of warm/cold from hot settings. The scenario: Moved into a new ...
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2answers
79 views

Is it bad to have the bottom of a baseboard heater covered?

I live in an apartment with baseboard heaters. As the temperature outside gets colder so does my apartment. The thermostat is set high enough, but it just doesn't reach that temperature. When it's ...
2
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1answer
1k views

What would cause the water to stop when I turn a faucet to hot?

When I turn the faucet to hot, the water stops running. Valves have been checked and I have hot water everywhere else.
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2answers
99 views

Hot Water Tank limit switch tripping, but not over heating?

My just over 2 year old, professionally installed gas hot water tank frequently loses the pilot light. I've had the installer come out 4 different occasions to look, and every time, he's stumped at ...
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1answer
109 views

Why does my boiler vent steam?

My understanding of a boiler system is that it is closed, meaning the water stays in the pipes and constantly recirculates. However, there is a vent (3" PVC pipe) that is connected to it that ...
4
votes
1answer
220 views

What is this plumbing “temperature regulator” called, and how do I adjust it?

I was told the below restricts/governs how much hot water can make it to my tub/shower. I'd like to know what it's called, and how I can adjust it to get hotter water. I'm attempting to twist the ...
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2answers
416 views

how to drain a single loop in one of my heating zones?

I have baseboard hot water heat. In one of my heating zones, there are three "loops". (i.e. shortly after the supply leaves the zone valve, the pipes split in three directions. These pipes then ...
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1answer
173 views

how water cylinder + leaking overflow + dripping not flowing

I had a leaking overflow pipe from my hot water cylinder. I had the pressure relief valve replaced(?), the valve that takes the mains pressure and reduces the pressure before feeding it into mains ...
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3answers
2k views

Cold water entering hot water circuit?

I'm having a bizarre problem. At least it's bizarre to me. I'm repacking a HW faucet connected to our washing machine. To do so, I turned off the HW heater, and then the valve on top of the HW ...
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0answers
24 views

Heating Not working but heating water kicks it in

My heating (gravity fed) is not coming in when the timer starts but the if the water needs heating it kick starts it. I thought it may be a thermostat issue because when I moved this to a point that ...
1
vote
1answer
142 views

water running but wont run hot through the kitchen only

we have hot water in all other parts of the house, but not in the kitchen? the water will come through cold and not become hot. If we turn the laundry hot water on, it will turn the kitchen hot water ...
4
votes
3answers
1k views

Code for elevating water heater in garages?

A gas/propane water heater in a garage is elevated. This is to ensure the open flame (at the bottom) is above a certain height (?) to avoid any combustible fuels in the garage from igniting. This all ...
0
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0answers
34 views

sudden increase in water pressure but decrease in temperature

Our water pressure used to be just ok, but temperature (hot water) is good. Couple nights ago when I turned on the shower, suddenly I heard a 'bang' sound. But the water pressure has increased so I ...
1
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1answer
60 views

shower shock,when hot or cold water is used in other parts of house

our 2 showers, we can't run any other hot or cold water without get extreme hot or cold differentials while in the shower.bought house last year,built in 1985.
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2answers
529 views

Where to split existing water pipes for new pipe run?

Goal: Install a new hot and cold supplied exterior faucet for garden watering and year round animal watering. Here's the rough situation: We're on a rural property, drawing from a well, into a ...
0
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0answers
24 views

What is the correct position of the thermostat on a hot water tank in an oil-fired heating system?

We have an oil boiler which heats our radiators and hot water tank. No matter what way I set my heating, I can't generate enough hot water for a bath. I suspect that the thermostat on my hot water ...
0
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1answer
468 views

How hot should my hot water heater vent get?

My gas hot water heater's flue/vent is very hot to the touch. Is that normal? How hot should it get?
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4answers
459 views

Should I use a timer or motion sensor in my hot water recirculation system?

I want to get a hot water recirculation line added to a house. plumber is proposing a timer to turn on/off the pump. I'm thinking a motion sensor method would be better. are these even common and how ...
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2answers
79 views

Need help understanding gas water heater

I just bought a house and it have a gas water heater. I need to know what is the water shut off valve to shut down water in the entire house. Also if you can help me label any of the other knob (which ...
0
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3answers
65 views

How should I install a new water heater?

I have recently shifted to San Diego. I am planning to install my own water heater. Can anyone guide me on below questions: Should I place my water heater next to furnace? Should I have a common ...