British Gas
  • At home
  • For business
  • Log in »
  • Register »
  • Forgotten password? »
  • Contact us
  • In an emergency
  • Home
  • Products & Services
  • Your Account
  • Help & Advice
  • Energy Efficiency
  • About Us
  • You are here:
  • British Gas Home >
  • Products & Services >
  • Boiler & Central Heating Systems >
  • Central heating & boilers explained >
  • How boilers work

Back to Central heating & boilers explained

  • How boilers work
  • Does my boiler need replacing?
  • Heating controls & enhancements
  • Questions you must ask
  • New Technologies to heat your home
How boilers work

Alternative Systems

0800 009 4450

Need a boiler quote?

Contact us to arrange a consultation with one of our experienced Heating Advisers.

Making a decision on the right heating system for your property and lifestyle is a big decision - our heating experts can guide you through this process.

Types of boiler available

  • How it works

  • Condensing
    conventional
    boiler

  • Condensing
    combination
    boiler

  • Alternative
    systems

  • Check how much you could be saving!

Alternative systems

More info
LPG
LPG
More info
Oil
Oil
More info
Micro CHP
Micro CHP
More info
Wood burning
Wood burning
More info
Warm Air Systems
Warm Air Systems
More info
Back boilers
Back boiler
More info
Landlord & commercial properties
Landlord
More info
Solar
Solar
Call one of our heating experts now on 0800 009 4450 for a free consultation and quote.
Did you know We guarantee availability of the spare parts for your chosen boiler for a minimum of 10 years after the installation.
How efficient is your boiler

Products & Services

  • Gas and Electricity
  • Boilers
  • Maintenance & Repair
  • Energy Savers Store

Your Account

  • Login
  • Register
  • Make a Payment
  • Submit Meter Readings
  • Move Home
  • View an online account demo

Help & Advice

  • Energy Bill Queries
  • Pay As You Go
  • Boiler Repair and Maintenance
  • EnergySmart
  • In an Emergency
  • Online Account
  • Contact us

Energy Efficiency

  • Free Home Insulation
  • Energy Savers Report
  • Helping You Save Energy and Money
  • New Technologies and Grants

About Us

  • British Gas Sponsors British Swimming
  • Our Business
  • Corporate Responsibility
  • Careers with British Gas
  • Investor Relations
  • News & Media Centre
  • Awards & Achievements
  • Our Vision
  • In Your Region

Your energy experts for:

  • Energy
  • Gas
  • Electricity
  • Dual Fuel
  • Power
  • Central Heating
  • Boiler & heating
  • Plumbing
  • Drains
  • HomeCare®
  • Electrics
  • Home appliances
  • Cheap Boilers
  • Gas Safe Register
  • Electrical Engineers
  • Terms & Conditions
  • Privacy Policy
  • Accessibility
  • Cymraeg
  • Affiliates
  • Sitemap
  • Centrica
  • Legal Information
© British Gas 2010