A common question we get asked this time of year concerning hot water repairs is “Why is my hot water not hot enough?”
We find our clients tend to notice this problem predominately when showering and in most instances, the temperature of the water hasn’t suddenly changed. It’s more than when the weather is fresher, and we tend to increase the ratio of hot to cold water, and therefore, any fault that affects the hot water becomes more apparent.
Hot Water Not Hot Enough, Common Causes
When customers ask “why is my hot water not hot enough” we always provide as much information as possible.
In our 42 years of plumbing experience and as hot water specialists, we have found the most common causes of this problem are:
Let’s take a closer look at each of these possible problems.
Malfunctioning tempering valve
Tempering valves are designed to blend hot and cold water to deliver water at a constant temperature that does not exceed 50’C. If water entering the tempering valve contains small amounts of sand or other debris, this can become lodged in the filters of the tempering valve and affect the operation of the valve resulting in lukewarm rather than hot water. Read more about tempering valves.
Faulty hot water service
If your hot water service is older (usually 10-15 years) or you have overlooked regular maintenance, it could result in a problem with the heating system.
A hot water system fails most commonly at these points:
The element is the mechanism within the hot water service that heats the water with the thermostat being responsible for switching the element on and off. Any problem with either of these parts can result in disruption to your hot water.
The relief valve is responsible for releasing built-up pressure as the water heats. If this valve is continuously leaking, then you will lose hot water which in turn is replaced with cold water that cools the hot water stored in the tank.
Hot water demand exceeds the capacity
Typically if a tanks capacity is over 125L, then you would connect to one of the off-peak tariffs, which means that electricity used by the hot water system will be charged at a lower rate. While this makes for a cost-effective solution, it does come with some limitations as you do not have an unlimited supply and if for any reason your demand for hot water increases there is always the possibility that you could run out of hot water.
If you are finding the hot water in your household is consistently not hot enough, and repairs are not required, then seriously consider a more substantial capacity, new hot water system.
Help Is On Hand
Here at Whywait Plumbing, we don’t consider hot water a luxury, it is a necessity. So if you are experiencing a cold shower and asking yourself why is my hot water not hot enough, call us now for Same Day Service.