A Guide to Boiler Replacement Costs

The lowdown on gas boiler replacement costs in Blackpool.

broken gas boiler – replacement boiler needed. So your 15 year old gas boiler has broken down yet again and is on its final legs and you can’t deal with spending money on repairs yet again. It’s finally time to start thinking about replacing it but you have no idea of what it’s likely to cost as the last time you purchased a new boiler is a fuzzy distant memory.

This guide to gas boiler replacement costs in Blackpool will equip you with more knowledge to make the process of replacing your heating system a little less complicated.

1: Ascertain what heating system you have now

There are three main heating systems you might have:

Combination boiler
Gravity fed system with separate hot water cylinder
High pressure (unvented) system with separate hot water cylinder.

Just how do you establish which system you have? Well if your hot water is heated by the gas boiler for instant use and you don’t have a hot water cylinder then you are very likely to have a combination boiler or “combi”. If you do have a hot water cylinder then the gravity fed system can be identified if you have a cold water tank and an expansion overflow tank (generally in the loft area of a house). High pressure (unvented systems) are less common but do not have tanks in the loft and produce water at mains pressure.

2: Determine what heating system you want to replace it with

You’ll find three main considerations which can sway your view:

The system you have now and its hot water distribution
The difficulty of upgrading to a condensing boiler
Solar options for water heating

Combination boilers Blackpool

If you have already got a combination boiler and you are pleased with its functionality then a like-for-like replacement is an effective option. Depending on the output of your old boiler you might wish to think about increasing the boiler size if you wish to improve the hot water supply for a more powerful shower. Combination boilers of 30kW and upwards have become available.

Gravity fed boilers

For gravity fed central heating systems in Blackpool the choices becomes more difficult. Few heating engineers nowadays would recommend a gravity fed system for a brand-new installation as they have a few limitations – not least a cold water tank in the loft that has the potential to break open and lead to water damage. However if you are on a budget and happy with the heating system then a like-for like replacement is perhaps a practical option. For flats and 1-2 bedroom houses where the hot water consumption is relatively low then a combination gas boiler can also be a good option. Upgrading a gravity system with a combi is usually quite straightforward and can free up the space where the hot water cylinder is located.

There’s two types of boiler you can use when replacing: system boilers and heat only boilers. Many old boiler systems have external pumps to move the heated water around and for these a heat only boiler may be used. A system boiler has the pump built into the boiler itself, which cuts down on the plumbing an installer must do but it does increase the fee for the boiler. So if the rest of your system is okay then a heat only boiler can be quite a good option whereas if you need to replace other elements it might be worth considering a system boiler as an alternative.

High pressure (unvented) system Boilers Blackpool

These are typically set up in larger homes where the hot water demands of a big family may outstrip a combination boiler’s capacity. Commonly they would be replaced like-for-like although the same consideration has to be given to whether a system boiler or a heat only boiler in Blackpool is the better option. Your heating engineer can guide you on this.

Condensing Boilers Blackpool

The majority of new boilers supplied since 2003 have been of the more fuel efficient condensing type. These have efficiencies of 90% upwards and are ‘A’ rated. Older boilers can often be G rated or 50-70% efficient so by switching to a condensing boiler you should reduce your fuel bills.

The downside of a condensing boiler is that it produces a small but steady stream of water which needs to be drained away. A condensing boiler needs access to a drain either internally (if possible) or externally. Depending on the position of your boiler this could be very easy to do or practically unattainable. Where it is difficult to do it may be worth considering moving the boiler position rather than incurring unneeded extra cost. As the system will have to be adjusted by re-siting the boiler it may also lead you to decide to swap boiler types. More likely, you will have to add a condensate pump to pump the waste water to the nearest drain outlet. It is essential that the condensate pipe isn’t allowed to freeze so if it drains to the outside it must be insulated.