How much will it cost to install a new gas boiler? Below is our guide to what an installation is likely to cost for a combi boiler, a regular boiler and replacing a back boiler. We have broken cost considerations down into the cost of the boiler and the cost of the installation (NB the installation costs include the cost of the boiler). Boiler costs vary considerably as a result of build qualities and levels of after-sales support. As a general rule, budget boilers offer shorter life spans, shorter warranties and reduced levels of customer support. Whilst they are cheap to install they tend to be expensive to maintain and less efficient to run. Those considering replacing their gas boiler will be presented with a wide range of boiler manufacturers with little insight as to why prices vary so much. We want to cut through the detail and provide you with the salient details. The easiest way to sum up the variations in price and quality is to undertake a specific comparison on similar models.

We have created a comparison table (below) to compare a typical 24kW combination boiler from budget, lower-range, mid-range and high end models. Bar Kays T ShirtNot all of the specifications will apply to every boiler in that category, but most will and importantly it will give you the information to ask the right questions.Gray Fur Comforter ​At the budget end the boiler is nearly half the cost of an upper end boiler. Luxury Outdoor Furniture DallasHowever the call centre is only manned Monday - Friday and the warranty terms are strict with lots of wriggle room for the manufacturer to refuse to honour it. At the mid – upper end of the market customers benefit from long term, no quibble guarantees, better life expectancies and long hours of opening.

For more on manufacturer guarantees and warranties read our Guide to Worcester Boiler Guarantees. We have attempted to provide some rough boiler installation costs for some common installation scenarios. There are three common types of installations: The tables below show a few scenarios for each type of installation. We have assumed a mid –range boiler cost with a standard installation set up. NB there may be additional costs for example if: Regular boilers are ‘heat only’ boilers. Very simply, the boiler will provide the heating and a cylinder will provide hot water. The two scenarios below show rough costs for 1) replacing a regular boiler in its existing location and 2) a rough cost for installing a new regular boiler in a new location. The cost for moving the boiler will vary according to whether it will be in the same room or moved to another room. In both cases we have assumed the cylinder and all other existing equipment are left in place. Combination boilers provide heating and hot water via the boiler (there is no cylinder).

There are two main scenarios for combination boilers: 1) The new combi boiler is replacing an existing combi boiler or 2) the new combi boiler is replacing a regular boiler and hot water cylinder. 1) Replacing an existing combi boiler The two cost scenarios below show rough costs for a new combi boiler in the same location and for installing a new combi boiler in a new location. Again the cost for moving the boiler will vary according to where it is moved to. 2) Replacing a regular boiler and hot water cylinder with a combi boiler In this scenario there are a lot of additional works to remove the hot water cylinder and re-direct the hot water pipes to the new combi boiler location. We have provided two approximate costs for replacing a back boiler: 1) The back boiler is removed and replaced with a system boiler, but the hot water tank is retained. 2) The back boiler and hot water tank are removed and replaced with a combination boilerMaybe it has come to the point where your old boiler has packed up, and the part you need is no longer available.

Or perhaps you are pre-empting all those problems by changing your boiler before it gives up the ghost. Either way, knowing how much you should expect to pay for a new boiler is a bit tricky. Why does one person get a new boiler for under £2,000 and another for £4,000? In this blog, we want to give you an idea of some of the costs involved, and what makes some jobs more expensive than others. Determining the cost of a boiler install is unfortunately not a simple business; it depends on a variety of different things. Firstly it depends on the size of the boiler you are installing – a small flat for example will require a much smaller boiler than a large house and the unit itself will be a few hundred pounds cheaper than a larger model of boiler. In addition it depends on what type of boiler you had originally and what type of boiler you are swapping to. On the whole there are two types of boiler – a regular boiler (with the hot water tank) and a combi boiler that makes hot water on demand (without a hot water tank).

Approximate starting prices are discussed below: All the prices listed above are starting prices – the final prices will be impacted by all the factors discussed below. Your heating engineer should always check the gas pressure going in to the boiler, because if this is insufficient, it could cause you problems. One of the issues that often comes up is where too narrow a pipe is used to take the gas from the mains at the meter to the boiler (usually to cut costs). If you have a narrow pipe coming out of your meter (15mm or less) you could have an extra cost on your hands. Unfortunately, there are occasions when moving the position of the boiler will be necessary. If you have an old floor-mounted boiler, a back boiler, or simply a boiler in an unsuitable position (ideally boilers are now situated on external walls) the job will require significant rerouting of pipework and the further you have to move it, the more expensive the job. Over the years, legislation has changed dramatically, meaning a boiler installation 30 years ago will likely not meet current standards.

If your flue is dispersing waste gas into a street for example, you may need a plume diverter to ensure people aren’t affected by the emissions. If your boiler is mounted in the centre of the house with the flue going up the chimney, this will no longer meet the regulations, and as such the boiler will need a new position on an external facing wall. So you want your new boiler in exactly the same place – chances are you will be swapping an old conventional boiler with no condense pipe for a new condensing model, and as such, a condense pipe will need to run to a downpipe, sink or gutter. The difficulty involved here will also add to the cost of the job. You may even have an old asbestos flue, in which case you will need a specialist in to remove the material before the boiler can be installed. Adding or replacing radiators and tanks will obviously make the job more expensive. Fortunately, it is not normally necessary to change them, and it is really easy to remove an old tank if you are switching to a combi.

We would always recommend getting heating controls – which includes as a minimum a programmer and thermostat, but we would also suggest thermostatic valves on the radiators (known as TRVs) where the property is larger. As an approximate guide, a programmer and thermostat will cost you a couple of hundred pounds, and each TRV for each radiator will cost about £50. If you have an outdated programmer or thermostat, or are lacking thermostatic radiator valves, it is really worth getting these replaced. They tend to pay back fairly quickly and don’t cost a lot of money. It is worth mentioning that although the workmanship of different installers does vary, as a bare minimum we recommend your choosen installer is Gas Safe – A Gas Safe registered engineer has been checked to make sure they are competent and qualified to work safely and legally with gas. This is the recognised installer mark of quality and has replaced the old ‘Corgi Registered’ mark. We too have seen the offers of £1000 installed boilers on Ebay and to be honest that is a little alarming!

Although all gas safe engineers will charge varying amounts for the work they do, our tip if you are looking for a value install is to use a small but highly recommended local installer. Also smaller companies may not be subject to sales VAT (if their revenue is less than £80k) and can therefore offer a few additional percent off the final price. Having said that, we always recommend getting a quote from British Gas, to provide you with a high end quote so you can see that you are getting a good deal from a local installer! I hope this gives you a better idea of some of the costs involved, and why changing a old floor mounted system boiler to a modern wall mounted combi might set you back £3,000, whereas switching a relatively modern boiler in the kitchen for a condenser might cost £2,000. Each property is different, but you should now have a bit of an idea what to expect when you get your quote. If you would like us to provide you with a free no-obligation quote fill in the form below: