Questions tagged [hot-water]

Questions about systems that produce and distribute heated water.

63 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
49 views

Why are my water heater's hot and cold connections oriented opposite convention?

I installed a 30 gallon Rheem water heater at one of my apartments. When I started to install the water lines, I noticed the right side indicated it was the hot side. The HOT word was stamped in the ...
2
votes
1answer
25 views

Shower is either all hot or all cold

I have new house and one shower is either all hot or all cold. The shower head in the off position is down and when I turn it to the left its all hot. center is off and right is is all cold. I tried ...
2
votes
0answers
45 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 ...
2
votes
0answers
420 views

Why do I have low hot water pressure in showers only?

I have 2 showers in my house. Suddenly the hot water pressure dropped in both. The cold is fine and we haven't noticed any change in the faucets in the house. What could make my hot water pressure ...
2
votes
0answers
171 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 ...
2
votes
0answers
98 views

Could the diverter valve be causing water to get cold quickly?

I recently finished a bathroom renovation. Went to take my first shower in the new surround and hot water only lasted about 15 mins. For the remainder the water was lukewarm. The new shower has a ...
1
vote
0answers
30 views

Insinkerator Instant Hot SSRV-1 Spitting Air — Need Ball Valve

My Insinkerator Instant Hot undersink water dispenser is about 8 years old and it has begun spitting air when running water. It is not a steam/overheating problem, because it only spits air when ...
1
vote
0answers
30 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 ...
1
vote
0answers
53 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, ...
1
vote
0answers
38 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 ...
1
vote
0answers
30 views

Lukewarm water in bathroom

I recently moved to a new flat. The hotwater is supplied by a electric heater located in the kitchen which is directly next to bathroom. In the bathroom, the tap for the shower doesn’t get hot to run ...
1
vote
0answers
392 views

electric hot water heater high limit switch repeatedly opening

The problem I am in the southeast US and have an electric hot water heater that is 25 years old (as is the house). Two years ago, I diagnosed and successfully replaced the lower thermostat. Earlier ...
1
vote
0answers
47 views

Isolating water supply to replace basin tap with no local stop valve

I got a new tap for a pedestal basin. Looking at the existing fittings there is no local valve to shut off the water at the basin itself where the water pipes come out of the wall & connect to the ...
1
vote
0answers
78 views

Sink water won't get hot unless shower is on

The sink tap takes 20+ minutes to even get lukewarm, never hot. I have lived with this for a while until I made an interesting discovery the other day. When the shower (in the same bathroom) was ...
1
vote
0answers
149 views

Black stuff comes out of faucet after running hot water for 10 minutes

After running my bath tub’s hot water for about ten minutes, the faucet is ejecting 1-2 second streams of black particulates, every few minutes. This is happening consistently after running the water ...
1
vote
0answers
42 views

With post-build instant hot water systems should the homeowner be extra diligent about water heater maintenance?

Instant hot water systems that are installed after a house is built use the cold water pipes to return hot water back to the water heater, or discharge that water through normal cold water use. (I ...
1
vote
0answers
29 views

How to Diagnose the noise from my Hot Water Tank

I Have a air source heat pump supplying a 250L ecoCyl tank. When it is warming the water, it makes a loud rattling vibrating sound and a series of bangs, getting louder as the tank warms towards 50C. ...
1
vote
0answers
102 views

How can I adjust the hot water limit on this faucet?

This is the inside of the handle for my bathtub faucet. It's a single handle that goes from cold to hot by turning counter clockwise. The stop collar, red, doesn't appear to adjust like my other ...
1
vote
0answers
208 views

Re-pressurize boiler / change expansion tank

I have a question about how to pressurize system when replacing expansion tank. I have successfully taken the old tank off, and am about to go buy a new expansion tank(hopefully already pressurized ...
1
vote
0answers
60 views

Why do I get hot water from the cold side of the faucets

I get steaming hot water downstream of any faucet being used. How can this happen?
1
vote
0answers
872 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 ...
1
vote
0answers
67 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 ...
1
vote
0answers
272 views

Why doesn't the hot water work but the central heating does?

We have a gas fired boiler (which works). There's no problem with the central heating. Both the hot water and central heating valves actuate automatically when they're selected on the heating ...
0
votes
1answer
28 views

Extension Hose for a Tank Booster

My plumber told me that this tank booster won't work with my hot water heater. [edited: somehow the rest of my question got stripped off on first post] His reason is that the cold water inlet and ...
0
votes
2answers
79 views

If I flush my hot water tank without unplugging the recirculating pump, Will it cause the pump to fail?

If I flush my hot water tank without unplugging the recirculating pump, Will it cause the pump to fail? Will the failure happen immediately, or can it fail later over time?
0
votes
0answers
27 views

Reinstall kitchen faucet supply valve with line to faucet facing downwards?

I Recently installed a new kitchen faucet with a weight on the hose to the retracting nozzle of the faucet ( black cylinder in picture ). Unfortunately, this new weight lays on top of the hot water ...
0
votes
0answers
37 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 ...
0
votes
2answers
40 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 ...
0
votes
1answer
26 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 ...
0
votes
0answers
17 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 ...
0
votes
0answers
34 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 ...
0
votes
0answers
25 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....
0
votes
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 ...
0
votes
1answer
56 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 ...
0
votes
1answer
62 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 ...
0
votes
0answers
30 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 ...
0
votes
0answers
34 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 ...
0
votes
1answer
65 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 ...
0
votes
0answers
53 views

How can I diagnose galvanic corrosion on a water pipe?

I have a newly installed indirect hot water heater and two of the pipes are showing significant amounts of corrosion. Given that the installation is only 3 months old, I suspect that there may be ...
0
votes
0answers
26 views

Do I need the “flow control” component on my furnace

Context: My furnace supplies tank-less domestic hot water to my small house. The cold water pipe going into the furnace has a "flow control" component that limits the flow to 3gpm. I understand that ...
0
votes
0answers
21 views

Hot water comes through cold after turning off and on

I have a combi boiler providing hot water in my house. If I run the hot water (e.g. in my shower or kitchen sink) it comes through hot just fine after a couple of seconds and stays hot however long ...
0
votes
0answers
142 views

Cold water handle overpowers hot water

In trying to fix a leak in my shower head, I ended up replacing both the hot and cold stems for Price Pfister handles. First, I replaced the hot water stem, which seemed to reduce the leaking. But, ...
0
votes
3answers
638 views

How do I bleed a noisy radiant heat system?

I have a gas fueled (converted from oil just a few years ago) boiler in my basement with an integrated tank-less water heating system for the showers/taps/etc. The output is three zones as shown in ...
0
votes
1answer
50 views

Temperature monitoring for storage hot water system (RP-2 connection)

My HWS has a secondary outlet connection I don't use, and I'd like to use it to install a thermal probe I can monitor. HWS RP ¾ / 20 temp probe? Does anyone know of a practical way to install a ...
0
votes
0answers
2k views

No hot water in only one bath tub

We are not getting hot water in only one bath tub. The left side is for hot water and right side is for cold. There is no drop in pressure when I turn on only the left side. But instead of hot water ...
0
votes
2answers
2k views

should i wrap exhaust duct joints of hot water heater?

i replaced my hot water heater. I used a single flexible 3" metal duct tube to go from the new unit to a an old "y" connector metal duct that is near the ceiling in the utity closet. I noticed ...
0
votes
1answer
353 views

Where to place an aquastat that is external to the hot water tank?

If you need to retrofit an aquastat to a heating system what is the best way to do so? i.e., in some hot water tanks or even boilers there may be a purpose-made port specifically to accept a "well" ...
0
votes
0answers
250 views

Cloudy hot water from bathroom sink

I have 2 bathroom sinks on the 2nd floor (not in the same room). One of them produces a cloudy (almost milky) white hot water. The other was runs clear hot water. Could this be an issue? This appears ...
0
votes
0answers
61 views

No hot water from the hot side of the faucet for entire home

I am having hot water issue with my home. I can feel the hot water outflow pipe from the hot water heater being hot. But when I turn on the hot tap, the water turns from enventually cold. In ...
0
votes
0answers
509 views

Cloudy hot water out of 1 sink in the whole house

There is one sink in our house that when you turn on hot water the water comes out very cloudy. It is in a upstairs bathroom and it is part of a double sink, the other works fine. Picture of the ...