How to Replace a Boiler

 This How to Replace a Boiler Checklist is FREE of Charge!

FREE How to Replace a Boiler Checklist!


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Check whether your boiler needs replacing and the potential savings you could make by visiting the British Gas’s calculator or the Energy Saving Trust website. Alternatively call British Gas on 0800 009 4450  
Consider having the boiler replaced during the summer season as opposed to the busy winter season  

Make a note of your existing boiler:-

  • What is the make and model of your existing boiler? 
  • What is its energy rating?
  • Is there a flue for your existing boiler? 

Make a list of the following information before you approach any companies or start researching boilers:

  • How many people live in your home?
  • How often and how many people come to stay regularly?
  • How many radiators are in your property?
  • Do you have a separate hot water tank?
  • How many showers do you have? How many are thermostatic?
Make sure you know the pros and cons of a combi boiler which heats both the water and the heating and a conventional boiler which typically heats water separately using a hot and cold water tank    
Understand the importance of boiler maintenanceto keep your boiler in
the best condition
Check whether you can replace your boiler via the Green Deal and spread the
cost of payment
Check whether the Green Deal is right for you   
Secure three quotes to upgrade or fit a new boiler, ask for information about on-going boiler servicing  
Check the quotes to make sure you are comparing like with like, for example what is the hourly or day rate of the engineer? What is the comparable cost of the boiler, does the quote include VAT?   
Find out what guarantees and for how long they are available for.
Check whether the guarantees apply to both labour and parts 
Compare the cost of individual servicing and annual safety checks versus a monthly or annual boiler insurance cover such as British Gas Homecare and know what it covers, such as just the boiler or plumbing, drainage and even electrics   
Know how long you will be without heating and hot water for and how you will keep warm and heat water while the new boiler is being fitted   
Make sure anyone fitting the boiler is Gas Safe Registered  
Consider fitting thermostats on radiators at the same time as having a boiler fitted to reduce future heating costs further   


Renovating Service Now might be a great time to renovate your home, but you need to avoid cowboy traders and make sure you don’t fall foul of the law! This pack will:-
  • Give easy steps for carrying out your renovation project
  • Explain how to get the most for your budget
  • Ensure you choose the right products and services for the job

To find out more about our Renovating Servicecontact us or click on the door!

All our information is brought to you by Kate Faulkner, author of
Which? Property books and one of the UK's top property experts.
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