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Only the best A-rated energy efficient boilers

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Best value

Alpha E-Tec NX 28kW Alpha E-Tec NX 28kW overlay alpha

Alpha Etec NX

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11-Year Warranty

Ideal for small and medium homes

Stainless steel heat exchanger

Compact stylish design

Fixed price (inc. VAT)

£2,038

or, monthly from

£42

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Budget boiler

Compact

Worcester Bosch 1000 24kW worcester

Worcester Greenstar 1000

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5-Year Warranty

Designed for cupboards

Great design at a lower price

Innovative 'QuickTap' water saving

Fixed price (inc. VAT)

£2,198

or, monthly from

£46

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Worcester Bosch 2000 25kW Worcester Bosch 2000 25kW overlay worcester

Worcester Greenstar 2000

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7-Year Warranty

Worcester's quietest combi boiler

Big brand budget boiler

New sleek compact design

Fixed price (inc. VAT)

£2,198

£2,248

or, monthly from

£46

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Modern new design

Worcester Bosch 4000 25kW Worcester Bosch 4000 25kW overlay worcester

Worcester Greenstar 4000

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10-Year Warranty

Innovative 'QuickTap' water saving

Powerful to meet your needs

£150 off - Ends Friday 🎉

Fixed price (inc. VAT)

£2,468

or, monthly from

£51

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Suitable for kitchen cupboards

Ideal Logic² Plus 24kW Ideal Logic² Plus 24kW overlay ideal

Ideal Logic² Plus

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10-Year Warranty

Made in the UK

Built in frost protection

Compact design for cupboards

Fixed price (inc. VAT)

£2,488

or, monthly from

£52

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Modern but affordable

Viessmann Vitodens 050-W 25kw Viessmann Vitodens 050-W 25kw overlay viessmann

Viessmann 050

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10-Year Warranty

10 year warranty

Compact dimensions & quiet

Fits into kitchen cupboards

Fixed price (inc. VAT)

£2,518

or, monthly from

£52

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Everything you need to know

Find quick answers to our most common questions.

Boiler help & expert guides

How Efficient Is My Boiler?

How Efficient Is My Boiler?

Boiler energy efficiency refers to how well a boiler uses its fuel to generate heat. This efficiency...

Stephen Day profile photo

Stephen Day

Gas Safe Engineer

13 February 2026

Guides

This Valentine's Day we’re asking - Does the size of your pipe really matter? 2026

This Valentine's Day we’re asking - Does the size of your pipe really matter? 2026

This Valentine’s Day we want to let you in on a dirty little secret…

Stephen Day profile photo

Stephen Day

Gas Safe Engineer

12 February 2026

Guides

What Happens After Your Boiler is Installed By iHeat?

What Happens After Your Boiler is Installed By iHeat?

In this guide, we’ll be answering some of the most frequently asked questions about what happens aft...

Stephen Day profile photo

Stephen Day

Gas Safe Engineer

12 February 2026

Advice

Worcester Bosch Greenstar 4000 System Boiler Review

Worcester Bosch Greenstar 4000 System Boiler Review

Today we will review the Worcester Bosch Greenstar 4000 System Boiler, and whether this system boile...

Stephen Day profile photo

Stephen Day

Gas Safe Engineer

11 February 2026

Reviews

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