A condensing boiler, on the other hand, captures air directly from the outside of the room it is placed in and is completely sealed for heat insulation. Another safety advantage is that because the condensed liquid is disposed of via a pipe connected to the drainage system, there is no risk of being in contact with toxic substances. Advances in technology mean that modern boilers are incredibly reliable.
However, because every type of boiler is different, they all have certain advantages and disadvantages. For safety, if the outlet becomes blocked your condensing boiler will automatically stop. The most common cause for this is a frozen boiler condensate pipe. This is most likely to happen if your boiler has been fitted with a condensate pipe that is outside the building and therefore exposed to lower temperatures.
Although a relatively common problem during cold snaps, it is easily prevented and fixed. There are two key factors to consider when deciding what size of condensing gas combi boiler to buy - how much hot water you are likely to use and how many rooms you will need to heat. For most standard bedroom houses with a single bath and shower, a combi-boiler of between kW is a good choice.
For homes with an additional en-suite bathroom or more rooms, a larger kW boiler would be recommended. Read our article on choosing the right boiler for your home for more advice and information. Welcome to Viessmann United Kingdom! It looks like you might not be in the UK? The products and services presented on this page may not be available in your country; find your local Viessmann website below.
Viessmann United States. Answer a few questions and find the heating system that's best for you. Find a product, get a quote. How to Bleed a Raditor. Combi boilers combination boilers are compact all-in-one boilers which are perfectly suited to heating smaller homes that don't have such a high demand for heating and hot water. This makes them a great space saver. Combi boilers heat water directly from the mains, providing instant hot water at a high pressure to a tap or shower, which can also mean less energy is wasted as there is no need to store hot water in a cylinder.
As all boilers work to heat your home, whether it be a combi, system or regular unit, it will produce waste flue gases which are dispersed out into the atmosphere via a flue.
So, a boiler that takes its water supply directly from the mains and produces heating and hot water for your home from one compact unit is a Combi boiler and with the addition of a Flue Gas Heat Recovery System it becomes a condensing unit too. Thus making it a condensing combi boiler. Simply put, the legislation states that:. There are a number of regulations in place and some exceptions, which you can find out all about in our guide to condensing boiler regulations.
Combi boilers are the most commonly installed type of boiler in UK homes so it's no surprise to hear that they come with many benefits. Plus, with the legislation stating that they have to be condensing, there are more advantages than ever before. While there are many advantages to having a combi boiler installed, it's always important to take into account the considerations.
Should you find that a combi boiler isn't the best choice for your home then you have 2 more options in the form of either a regular or system boiler which have to be condensing too, so your home won't be missing out on a highly efficient unit.
By quickly filling in one of our simple online forms you will get free quotes for the installation of a new or replacement condensing Combi boiler from up to 3 different installers in your area, with absolutely no obligation whatsoever to accept work from any of them.
You won't be short on choice when it comes to looking for a condensing combi boiler and to help you begin your search we've put some of the most popular models in the table below. Please enter a phone number. Preferred time of contact?
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GreenMatch Blog Condensing vs. Condensing vs. With older systems, it was more common to get a lot of heat wastage which meant you were practically burning gas without getting anything for it. Condensing boilers are also considered a lot safer than older systems. In the long run, you should find you are able to reduce your energy costs because your system is working more efficiently.
A combi boiler is a specific type of heating system. It combines water heating with central heating in one unit and takes up much less space than a traditional boiler installation.
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