Why is the water in one faucet hot but in another cold?


 Few things are more disconcerting than turning on the hot water faucet in the kitchen and feeling the hot water, only to walk into the bathroom and find ice-cold water coming from the same "hot" faucet. It's a frustrating problem that can make daily tasks inconvenient and is often a sign that something is wrong with the plumbing.

One of the most common causes is the distance from the water heater. If a faucet is located far from the water heater, the hot water has to travel a longer distance, which means it may be delayed or lose heat along the way. This is especially true in larger homes or those with older plumbing, where hot water lines have little or no insulation.

Another cause could be a partially closed or defective valve. If a valve in the hot water line supplying a particular faucet is only partially open, or if it's clogged with sediment, it can restrict the flow of hot water. This can cause that faucet to only deliver cold water, even when others are working properly. Checking for shut-off valves under sinks or in utility rooms can sometimes reveal a quick fix.

In some cases, the problem lies with the faucet itself. Modern faucets often have cartridges or mixing valves that mix hot and cold water. If the cartridge is damaged or blocked by mineral deposits, it may not allow hot water to flow. Often, replacing or cleaning the cartridge is all that's needed to restore proper temperature control.

For homes with more complex systems, such as multiple water heaters or recirculation pumps, the problem could be due to an imbalance or malfunction in the system. A faulty pump, a poorly positioned pipe, or even a cross-connection between the hot and cold water lines can cause inconsistent water temperatures between faucets.

While some causes are easy to fix with DIY solutions, others require a plumber to diagnose and resolve. If you've tried basic remedies, such as checking valves, flushing lines, or replacing cartridges, and the problem persists, it's best to call a professional. They can identify the problem before it gets worse, ensuring every faucet in your home delivers the desired water temperature.

If you'd like, I can also write a short version of this blog with a "troubleshooting checklist" to make it easier for readers to reference. This would make it easier to share with a fast-reading audience.

Call Emergency Plumber in London. We are your right contact partner.

Location: London, UK

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