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If you do not have a separate hot water heater, it is possible that you have a mixing valve on your boiler and if it is open, it creates an imbalance in the system. So while you are taking a shower and someone turns on the hot water in another area of the house, the pressure on the cold side increases an follows the direction of least resistance and mixes more cold water with the hot than it normally would. As a result, the water in your shower get colder. This can happen even if the mixing valve is completely closed. In the same way, if someone turns on the cold water somewhere else while you are taking a shower set just the way you like it, the water could all of a sudden become very hot. Mixing valves were the answer years ago to mix cold water with super hot water coming from the boiler. They never work very well. So, the best way to avoid temperature fluctuations is to replace faucet with built in temperature adjusting controls. Set the temperature you want and if the pressure, hot or cold drops, the faucet will automatically adjust and the temperature to your setting. Your water pipes might come in contact or are very close to a hot water heat pipe or a heating duct. It may be in the same joist bay. When you do not use the water for a while the water near the heat source stays warm. When you turn on the water the water will seem warm at first and as the water further downstream (which has cooled off) comes up, the cooler section flows through until the hot water in the water heater gets to your fixture
What else can I help you with?
Does water flow from hot to cold?
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
What letter would you see on a french hot tap?
Usually there are no letters on French taps; some old taps bear the letters C (for chaud = hot) and F (froid = cold). Hot water taps are always located on the left side, cold water taps on the right. It is also standard to find color marks (blue for cold, red for hot) on the taps. On newer models, having a central lever instead of two taps, you turn the lever to the left for hot water and to the right for more cold water. Also the blue and red marks may be found on these type of taps.
How easy is it to switch from hot and cold taps to mixer taps?
Very easy once the supply lines to both the hot and cold water supply are shut and then work can proceed on changing out the "taps"
What is the function of the hot and cold water valve in a plumbing system?
The hot and cold water valves in a plumbing system control the flow of hot and cold water into the fixtures, allowing users to adjust the temperature of the water coming out of the taps or shower.
What could be wrong if nothing comes out of any of the hot water taps in the house but the cold taps are working just fine?
The cutoff valve from the hot water heater may have been closed.
Is cold water always on the right?
No, cold water is not always on the right. The location of hot and cold water taps can vary depending on the plumbing system and design of the fixture.
What causes the hot water to come out of the cold water taps after 10 years?
if someone put in a hot water tank they may have the lines switched.
Why taps are separate for hot and cold water?
Not all plumbing devices do; some have combined hot/cold taps. In either case, hot and cold water lines are separate, the hot water coming from a water heater. The simplest taps merely control each line, letting the user measure out how much of each they want.
How do you prevent taps from knocking?
If possible, install hammer arrestors in hot and cold water mains.
What are the advantages of mixer taps?
Mixer taps are extremely easy to use and one does not constantly have to try and get the perfect temperature and mixture of hot and cold water. Also one can make sure that hot water is not being overused.
What does red color mean on kitchen water taps?
It means hot water while the blue side means cold
Can you explain how to properly adjust the hot and cold taps to achieve the desired water temperature"?
To adjust the water temperature, turn the hot tap for warmer water and the cold tap for cooler water until you reach the desired temperature.
