There’s nothing like a comfortable shower to destress and rejuvenate your soul—assuming the water temperature is set appropriately. Being unable to set it as you normally would is a telltale sign of shower mixing valve problems.
This component is responsible for regulating temperatures and also plays a role in regulating pressure. So, if you’ve got a shower valve not working, you’re likely in for an uncomfortable experience in more ways than one.
In this blog, we’ll walk you through some common mixing valve issues and present some solutions to get your shower working properly again!
A shower mixing valve (a.k.a. thermostatic mixing valve) regulates water to create a balanced water temperature for bathing—not too hot or cold. They work by blending hot water from your water heater with cold water from your main supply.
Shower mixing valves usually have a default temperature, which users can adjust to their preference by twisting the hot and cold water knobs. Yours is probably inside the wall behind the shower handles if you need to access it.
When you encounter thermostatic mixing valve problems, it’s usually due to:
However, as you’ll learn, sometimes these issues reflect larger problems with your systems that could lead to a plumbing emergency if not addressed by a professional.
Image source: Canva
Like other plumbing parts, a mixing valve can develop issues over time. You need to be wary of its trouble signs so you can act immediately and prevent disturbances. If you’ve got a shower diverter valve not working, these are the signs and fixes:
Have you ever been excited to shower, but the water was too hot or cold and wouldn’t change?
You should have full control over cold and hot water in your shower, and if you don’t, it’s a sign your mixing valve needs adjusted.
You should be able to do this yourself to achieve the desired temperature. However, if an adjustment doesn’t produce the result you’re looking for, it might be time to call a professional to take a look.
Never resort to a DIY fix when it comes to this plumbing problem as it could create further, more costly issues!
A damaged or corroded component is typically the culprit behind a leaky shower mixing valve—you’ll know you have one if water is forming puddling where it shouldn’t outside your shower.
In this case, there’s probably a problem with the valve that requires immediate replacement by a plumber. They can find the piece that fits your mixing valve model, install it, and get your shower running correctly again. As with any plumbing leak, leaving it unaddressed will spike your water bill and cause property damage!
Read More: How a Simple Water Leak Can Cause Major Damage
Another sign you have mixing valve issues is if you have no hot water. Step one is adjusting the valve knobs to your usual setting and see if the temperature changes—it’s possible they just need some turning to get back on track.
If nothing happens, call your plumber immediately as this could instead be a sign that you’re having issues with your water heater. Water heaters are finicky and tinkering with them can have serious consequences, so leave them to the professionals.
Another one of the most common thermostatic mixing valve problems is low water pressure or weak water flow. Try adjusting the water pressure setting on the valve, as it could have slipped down to a lower setting or just need a boost.
However, if unsuccessful, you likely have a sediment or mineral build-up problem on your hands. This build-up, which can occur inside the valve as well as on the showerhead or other parts, will obstruct the water flow and reduce the pressure. You can try to remove the sediment build-up yourself or contact a professional.
Read More: 8 Reasons Why Your Water Pressure Is Low
Image source: Canva
When it’s time to take a shower, the last thing you want is to find yourself with scalding water or low water pressure. Fortunately, many thermostatic mixing valve problems only require simple adjustments—but what if they don’t?
That’s when you call 1st Rooter. With over 25 years of unparalleled service, we’re proud to call ourselves the most trusted plumbing company in Hamilton, Burlington, and Oakville. If you’ve got a shower valve not working for whatever reason, rest assured we have the skills and know-how to figure out why and solve the problem.
Mixing valve not working? Call us today for a solution!
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