Boiler Installation

A new boiler is the single most impactful home improvement for energy efficiency and heating reliability. Modern A-rated condensing boilers are up to 30% more efficient than boilers installed before 2005, delivering significant savings on energy bills every year. With gas boilers facing a phaseout deadline of 2035, choosing the right boiler now matters more than ever.

What is included

Gas Safe registered engineers
Up to 10-year manufacturer warranty
All major brands available
Finance options available

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Boiler Installation

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What is Boiler Installation?

Boiler installation involves the removal of your existing boiler and fitting of a new unit by a Gas Safe registered engineer. A straightforward like-for-like replacement takes 4-8 hours. Moving the boiler to a new location or changing from a regular to a combi system requires additional pipework and typically takes 1-2 days. All installations include commissioning, manufacturer registration, and a Building Regulations Compliance Certificate.

When Do You Need Boiler Installation?

Boiler over 10 years old and becoming unreliable

Heating bills increasing despite same usage patterns

Boiler requiring frequent repairs — more than once per year

Pressure constantly dropping — indicating a system fault

Radiators slow to heat up or not reaching temperature

Planning a home extension requiring additional heating capacity

Switching from oil or electric to gas central heating

What the Service Involves

1Full assessment of your heating system and hot water demand
2Boiler sizing calculation — ensuring correct output for your property
3Removal and safe disposal of old boiler
4Installation of new boiler to manufacturer specification
5System flush to remove sludge and debris
6Magnetic filter installation — protects the new boiler
7Commissioning and testing of all zones and controls
8Manufacturer warranty registration and benchmark documentation

What Affects the Job?

—Type of boiler — combi, system, or regular (heat only)
—Brand and model — budget to premium range
—Whether it is a like-for-like replacement or new installation
—Flue route — standard or extended flue run
—System condition — a dirty system may need a powerflush first
—Controls — standard or smart thermostat (Nest, Hive, etc)
—Extended warranty option — typically 5-10 years

Frequently Asked Questions

Which boiler brand is most reliable?

Worcester Bosch, Vaillant, and Baxi consistently top reliability surveys. Worcester Bosch is the UK's best-selling brand for good reason — parts availability and engineer familiarity are excellent. Your installer will recommend the right model for your property size and usage.

How long does a boiler installation take?

A like-for-like combi boiler replacement typically takes one day. New installations, system conversions, or relocating the boiler take 1-3 days depending on pipework required.

What warranty will I get?

Most manufacturers offer 5-10 year warranties when installed by an approved engineer and registered at the time of installation. Worcester Bosch offers up to 12 years on selected models.

Do I need to be home for the installation?

Yes — an adult needs to be present throughout the installation. The engineer will need access to the boiler location, hot water cylinder if applicable, and usually the loft and airing cupboard.