Combi Boilers

New combi boiler installation

The most popular type of domestic gas central heating boiler in the UK. How much does it cost to install new combi boiler?

How much does a combi boiler cost?

The cost of a new combi boiler can vary depending on boiler brand and kw output, property size, and how much the installer charges for fitting.

Generally you should be paying around £1500-£2000 for a mid range combi boiler.  This price should include boiler installation. However there may be extra costs if you need new pipework, rewiring or you prefer to move your boiler to a new location within your property.

Install new combi boiler
in the same location
£2000 1 day
Install new combi boiler in a new location £2500 1- 2 days
Get 3 separate quotes for a new combi boiler>>

Choosing the right boiler

Before buying a new combi you there are several things you should check (in addition to the price of the new boiler and any installation costs).

  • Is your new boiler a condensing boiler? This type of functionality is mandatory for any new boiler installations in the UK as they are more energy efficient
  • Will heating controls / room thermostat come as standard?
  • kw output of  new combi boiler – the power output of a boiler is measured in kw (kilowatts).  A larger boiler will cost more than one with a lower kw output

The table below lists the size of boiler and typical kw output needed to heat water and radiators within different property types.

Flat / Smaller House Up to 10 24kw
3-4 Bedroom House 15 30kw
Large Detached 20+ 35kw – 42kw
Approximate kw output required

Paying monthly with a combi boiler finance plan

The price of a new boiler can be too expensive for most of us to pay in one go.  However many families are taking advantage of a new method of replacing their old boilers.

Many suppliers have introduced pay monthly boiler plans which allow you to spread the cost of a new central heating system into smaller installments each month.

How do boiler finance plans work?

Subject to qualification you can have a new combi boiler installed with no upfront cost.  Monthly payments are made from the energy you save after your new combi boiler is installed.

A new A rated  boiler means  savings of around £30 per month in the average size family home. This means that your new boiler starts paying for itself right away.

Furthermore, if you choose a longer warranty any boiler cover plan you have will not be needed. This means more savings each year. Your new system can end up paying for itself.

  • flexible finance plans to suit your budget
  • small monthly payments
  • A rated condensing combi boiler
  • No deposit options
  • warranty included
  • No boiler cover required
  • New combi boiler from £20 PER MONTH

Through our network of approved Gas Safe installers Boilers UK can help you find the bests combi boiler deals. Leave a few details and we will put you in touch with 3 individual partners who can give you no obligation quotes .

Cost of a new boiler

Why should I replace my boiler?

It is estimated that during winter months your heating accounts for up to 60% of your energy bills. Therefore it is important that your boiler is heating your home at the lowest possible cost.

Many old boilers have a low energy rating . As a result you may be paying far more than you have to for your hot water and central heating.

Replacing your old one with a new boiler can mean savings of approximately £300 per year in the average UK home. That equates to £25 per month towards the cost of a new boiler.

Furthermore, a new combi boiler will come with a warranty of up to ten years. Therefore any boiler cover plan you currently have will not be needed. This means more savings on energy costs.

What is a combi boiler and how does it work?

A combi boiler is a central heating boiler and a water heater combined into one. It heats water for your  taps and radiators without the need for a storage tank.

This means overall they are more energy efficient than regular boilers because they provide instant hot water on an “as required” basis. As a result there’s no need to heat up a  whole hot water cylinder when you only want to use a little.

Combi boilers are also popular because they are more compact than other boiler types. Conventional gas boilers require extra storage space in your loft or cupboard.

The diagram below provides a simplified example of how a combi boiler generates hot water for your taps or central heating system.

New Combi Boiler Diagram - How a Combination (Combi) Boiler Works
Installing a new combi boiler
  • Cold water enters the combi boiler via the mains tap (Note there is no  water storage tank)
  • A sensor detects that heat is required and the burner inside the boiler is fired up
  • The cold water is passed through a heat exchanger and reaches the required temperature
  • Hot water is fed to your tap from the boiler

Advantages of a combi boiler

  • Energy efficient
  • Lowers carbon dioxide emissions
  • Only heat the amount of water that you need
  • Compact and aesthetically pleasing as they can be placed in cupboards or smaller storage spaces
  • No need for water storage tank or hot water cylinder

 Popular boiler brands

Free boiler grant scheme

If you live in a low income household you may still qualify for a free boiler.  The Energy Company Obligation runs until the Autumn of 2018.

ECO is a Government-led energy efficiency scheme that provides funding to help families on benefits or tax credits with home improvement measures.

If you are eligible you may qualify for a brand new A rated boiler free of charge. Find out if you qualify for an ECO boiler grant >>

What our visitors say

“The cost of paying for a new boiler in one go was outwith my budget. Smaller monthly payments was much easier and i ended up no worse off due to the reduction in my energy bills”

New Boiler Cost | Combi Boiler Finance