One of the first things you should do is find out which type of boiler you have at home, because the cost of boilers will vary a lot dependent on a few things:
Combi boilers tend to be the lowest cost, but they have some limitations. Combi’s are designed to produce instant hot water in limited amounts, so they do not perform well in large houses that have high levels of simultaneous hot water demands ( 2 or more bathrooms)
Most systems are of the ‘condenser’ type these days. This makes them energy efficient – Condenser is not really an individual model, but is the way the boiler recovers & reuses waste heat.
Full system boilers usually mean that you have a separate hot water tank somewhere on the property and if this replacing at the same time as the boiler, then the costs can mount quickly.
If you are having trouble with your existing unit, get an accredited ‘Gas-Safe’ engineer around to take a look at the problem and see if it can be repaired without the need for replacement first.
check out www.localboilerquotes.co.uk/boilers-prices-guide for more information.