Home ImprovementElectric Boiler vs Gas Boiler – Which Should You Choose?
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The combination boiler is the most popular type of boiler in the UK and for good reason. Its simplistic controls, compact size and temperature control are almost second to none, so it’s no wonder that many homes across the country now have a combi installed.
But a question arises; how does a combi boiler work? Stick with us for a definitive answer to that question.
So if you:
Then read on!
Part of the answer is in the name of the boiler. Combi boilers join both central heating and water heating boilers into one comprehensive unit. Combi boilers work by using two heat exchangers. The primary heat exchanger heats and reheats water that flows through a property’s pipes and radiators (central heating). The secondary exchanger heats water supplied through the mains, which will then travel to your taps and provide hot water.
The primary heat exchanger will maintain a temperature that is set on a room’s thermostat. If the temperature drops below the set threshold, the boiler will fire up and begin heating water that will be sent through pipes into the radiators. From the radiator, it is sent back to the boiler where it is reheated again in a cycle.
As you can imagine, this results in a lot of dirty water. Thankfully, this isn’t the water that will travel to your taps.
The secondary heat exchanger uses water from the main water line. When you open your hot tap, water toggles a paddle called the dabble pressure switch. This turns on the burner and a pump at the bottom of the boiler. This pumps water from the burner (used in the primary heat exchanger) to pipes within the secondary heat exchanger. The cold mains water is then heated through the heat exchanger and will then pass towards your taps.
You should keep in mind that combi boilers can’t use both exchangers at the same time. When the dabble switch is flicked, all heat will be diverted to the secondary, until the taps are closed.
Though they function similarly to conventional boilers, combis differ vastly from their counterparts. Keep in mind, while combi boilers offer a range of benefits, they do have some drawbacks too and are usually suited to specific properties and needs.
Let’s start with the pros of having a combi boiler.
As mentioned before, combi boilers are more suitable for smaller homes, which means that they may not be the best choice for larger properties or families. The water flow may be impacted by having multiple users at one time, a problem that conventional boilers don’t have. Other combi boiler cons to consider are:
It really depends on a number of factors. For smaller living spaces and homes with one bathroom, a combi can be perfect. As mentioned above, it runs on mains water, so you won’t need to make space for a large water tank. Plus, if you live by yourself, or one other person the water draw issue won’t be much of a problem.
Plus, combis are more energy efficient in comparison to conventional boilers. As they supply hot water on demand and won’t need to constantly heat and reheat a hot water tank, your energy bills can decrease by up to 40%.
Fantastic Services can help you with a boiler installation service! We work with gas safe engineers who have the tools and experience to install any boiler. The engineers work on a flexible schedule, so you can book a time slot that will be perfect for you.
We also offer boiler cover plans, so that you are protected and insured from potential problems and breakdowns in the future. Plus, you get an annual boiler service every year as part of the plan, so you can make sure your boiler is in good working order.
So what are you waiting for? Book your boiler installation service today!
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We hope you found our article on combi boilers helpful! If you have any questions, consider leaving a comment with us below.
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