Why Does My Shower Get Cold When the Outside Temperature is Perfectly Warm?
Have you ever experienced a freezing cold shower when the outside temperature is a comfortable 80°F? This can be quite frustrating, especially when everything seems normal and the thermostat valve isn't to blame. In this article, we will explore the various reasons behind this issue and provide solutions to help you maintain your perfect shower temperature year-round.
Underground Water Temperature
The temperature of the water in your home can be influenced by several factors, including the source of your water and the depth at which it is supplied. Generally, well water maintains a fairly consistent temperature between the coldest and warmest seasons, depending on your location. As soon as you dig a few feet down, the temperature is significantly lower. Even at well depths of 100 feet, the water can be as low as 6°C (43°F), rarely above 14°C, with an average of around 10°C (50°F).
Water from underground aqueducts is typically much cooler than the ambient temperature. The water sitting in the above-ground pipes will eventually warm up to the ambient temperature. So, if you jump in the shower as soon as you open the cold water tap, the first few drops of water will be room temperature. Once the water from the well or the city reaches it, it will be considerably colder.
Solution: Turn on the hot water and let the water run a bit until it warms up.
Hot Water Tank Usage
Another common reason for cold water in the shower is the usage of hot water from another source. If someone has just used the shower before you, using all the hot water in the tank, the cold water will flow through for a brief period until the heating element can replenish it. However, if no one has used the hot water system, and the water is still cold, it might indicate a problem with the heating elements in your hot water tank.
How to Check the Heating Elements:
Turn off the power to your hot water tank.
Using a multimeter set on Ohms, perform a continuity test on each heating element. There are typically two elements, with the lower one being the most suspect based on your description.
Remove the upper and lower inspection covers. Touch the two screws connected to the heads of the heating elements with the multimeter leads and observe the needle movement. If the needle moves, indicating continuity, the element is likely functioning correctly. If the needle does not move, the element is faulty.
To replace the element, drain the water in the tank to a point below the element. Turn off the supply line valve. Crack the safety pressure valve to allow air to ingress, then connect a hose to the drain at the bottom of the tank and drain the water.
Once the water is drained, disconnect the power wires and remove the faulty element. Some elements are screwed in, while others have a clamp system. Once the element is removed, take it to your local hardware store to get a replacement that matches your old one.
Reassemble the tank, clean around the tank gasket, and reconnect the wires. Open the water valve, check for leaks, and let the tank heat quicker if it was the top element. Ensure it makes more hot water if it was the lower element.
By understanding these potential issues and applying the appropriate solutions, you can ensure that your shower remains at the perfect temperature, regardless of the outside climate. Whether it’s addressing the underground water temperature or checking your hot water tank, taking proactive steps can save you from those oh-so-cold showers.
Keywords: shower temperature, hot water tank, water heating system, thermostat valve, water tank elements