The temperature you should set your combi boiler for heating and hot water

"A combi boiler controls the water temperature for your heating system and hot water. It is the central hub that determines how hot the water being pumped to your radiators and taps is. So it makes sense that it's set up to ensure that you get the right heat output and your hot water is at the ideal temperature. The combi boiler is one of the most common types of boiler found in homes, and fortunately, they are easy to operate."

"Getting the temperature right is important for comfort, safety, and efficiency. He adds, "Too hot and you risk scalding; too cool, and there's a risk of bacteria such as Legionella." Louis Georgiou, Operations Director at Essential Workwear, adds, "If your boiler is set too high, it works harder than it needs to, which can shorten its life and waste energy. Keeping it at the right level helps the boiler run smoothly and reduces strain on the system.""

A combi boiler regulates water temperature for both central heating and domestic hot water, delivering heat to radiators and taps. Most combi boilers include accessible controls to set heat and hot-water temperatures. Temperatures should be adjusted to match current conditions to maximize comfort and minimize energy use. Correct temperature settings reduce the risk of scalding and limit conditions that can encourage bacterial growth such as Legionella. Excessively high settings increase boiler workload, energy waste, and mechanical strain, while appropriate settings sustain efficient operation and extend boiler life.

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