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Gas Boiler Installation and Replacement Across the UK

Reliable, energy-efficient gas boilers installed by qualified professionals nationwide. We help you choose the right system for your home and heating needs.

Heating engineer installing a modern A-rated domestic boiler

Why Replace Your Gas Boiler?

If your boiler is ageing, unreliable or inefficient, replacing it with a modern, energy-efficient model can make a real difference to your comfort and energy bills. Older boilers can operate at as low as 60–70% efficiency, meaning a significant portion of the energy you pay for is wasted.

Modern A-rated condensing boilers achieve efficiencies of 90% or above, delivering more heat from every unit of gas and reducing both your bills and your carbon footprint.

Types of Gas Boiler

  • Combi boilers — provide heating and instant hot water without a separate cylinder or tank. Ideal for smaller homes with one bathroom
  • System boilers — work with a hot water cylinder to supply multiple taps and showers simultaneously. Suited to medium and larger homes
  • Regular (conventional) boilers — use both a cylinder and a cold water tank. Best for homes with an existing traditional system or high hot water demand

During our home assessment, we help you choose the right type and size of boiler for your property, household size and hot water requirements.

Benefits of a New Gas Boiler

  • Lower energy bills — modern boilers use less gas to produce the same amount of heat
  • Improved reliability — a new boiler reduces the risk of breakdowns and costly repairs
  • Better heating control — pair your new boiler with smart heating controls for greater comfort and efficiency
  • Quieter operation — modern boilers are designed to run more quietly than older models
  • Manufacturer warranty — new boilers come with manufacturer warranties for peace of mind
  • Compact design — many modern boilers are smaller and can be installed in a wider range of locations

Who Should Consider a New Boiler?

  • Homeowners with boilers over 10–15 years old
  • Anyone experiencing frequent breakdowns or rising repair costs
  • Households with uneven heating or inconsistent hot water
  • Homeowners who want to reduce energy bills and improve efficiency
  • Anyone planning home renovations or extensions that change heating requirements

Heating Controls and Efficiency

A new boiler is most effective when paired with modern heating controls. Smart thermostats, programmable timers and thermostatic radiator valves (TRVs) help you manage your heating more precisely, reducing waste and improving comfort. We can install or upgrade your controls at the same time as your new boiler.

Our Boiler Installation Process

  • Free enquiry — tell us about your current boiler and any issues you're experiencing
  • Home survey — we assess your heating system, hot water needs and property layout
  • Clear quote — a detailed, transparent quote with our recommended boiler and any additional work
  • Professional installation — carried out by Gas Safe registered engineers, usually completed in one day
  • Handover and aftercare — we demonstrate your new system and provide ongoing support

How Much Does a New Boiler Cost?

The cost of a new gas boiler in the UK depends on the boiler type, your property size, the complexity of the installation and whether any pipework or flue changes are needed. Combi boilers are generally the most affordable option for smaller homes, while system and regular boilers may cost more due to additional components such as hot water cylinders.

We provide clear, itemised quotes with no hidden charges. Our aim is to recommend the most suitable boiler for your home and budget — not the most expensive option. Every quote includes labour, materials, manufacturer warranty details and any building regulations compliance work.

Boiler Warranty and Aftercare

All new boilers installed by Eco Simply come with a manufacturer warranty, typically ranging from 5 to 10 years depending on the model. We register your warranty on your behalf and provide aftercare guidance to help you maintain your boiler and keep it running efficiently for years to come.

Boiler Replacement or Repair?

If your boiler is under 10 years old and has an isolated fault, a repair may be the most cost-effective option. However, if your boiler is older, frequently breaks down or has become noticeably less efficient, a replacement is usually the better long-term investment. A new A-rated condensing boiler can reduce your gas consumption by 20-30% compared to an older G-rated model.

During our home survey, we assess your current boiler's condition, efficiency and repair history to help you make an informed decision. We never pressure homeowners into replacing a boiler that still has useful life remaining.

Thinking Longer Term? Consider a Heat Pump

If your gas boiler is due for replacement and your home is reasonably well insulated, it may be worth considering an air source heat pump as an alternative. With grants of up to £7,500 available through the Boiler Upgrade Scheme, the cost gap between a new boiler and a heat pump has narrowed significantly. Heat pumps also provide a future-proof solution as the UK moves away from gas heating.

Not every home is suitable for a heat pump right now — and for some properties, a new efficient gas boiler combined with smart heating controls is the best immediate option. We can talk you through both routes and help you decide what makes sense for your situation.

Gas Boiler Installers Serving Customers Across the United Kingdom

Eco Simply provides gas boiler installation and replacement services across Birmingham, Solihull, Sutton Coldfield, Wolverhampton, Dudley, Walsall, West Bromwich, Coventry and the wider UK. We work with leading boiler manufacturers to ensure quality, reliability and value for your home.

Whether you need a straightforward boiler swap or a full heating system upgrade, our Gas Safe registered engineers deliver professional results with minimal disruption. Get a free quote today.

Gas Boiler FAQs

The cost depends on the type of system, the size of your home and the complexity of the installation. Combi boilers tend to be the most affordable option. Contact us for a free, no-obligation quote tailored to your property.
A straightforward like-for-like boiler replacement typically takes one day. If the boiler is being relocated or the system type is changing, it may take a little longer. We provide a clear timeline before work begins.
If your boiler is over 10–15 years old, requires frequent repairs or has become inefficient, replacing it is usually more cost-effective in the long run. Newer boilers can be over 90% efficient compared to 60–70% for older models, making a noticeable difference to your energy bills.
The best type depends on the size of your home, number of bathrooms and hot water demand. Combi boilers suit smaller homes; system or regular boilers suit larger properties with higher hot water needs. We assess your home and recommend the best option during our free survey.
Building regulations require certain minimum heating controls with any new boiler installation. We recommend upgrading to smart controls at the same time to maximise your energy savings and improve comfort. We can advise on the best options for your setup.

Need a New Boiler for Your Home?

Contact Eco Simply for a free, no-obligation quote on gas boiler installation across the UK.

For the quickest response, message us on WhatsApp. Alternatively, email contact@ecosimply.co.uk.

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