Boiler Installation & Replacement in East Sussex

Professional new boiler installation by Gas Safe registered engineers. We supply and fit all leading brands with full commissioning and warranty registration.

Gas Safe Reg. 97955440+ Years ExperienceEast Sussex BasedFree Assessment

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About Our Boiler Installation Service

Installing a new boiler is one of the most important investments you can make in your home's comfort and energy efficiency. At A&O Plumbing and Heating, our Gas Safe registered engineers bring over 40 years of experience to every installation. We assess your property, recommend the right boiler type and output for your needs, and carry out a clean, professional installation — leaving everything working perfectly and fully commissioned. We handle all makes including Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann. Every installation includes full system checks, pressure testing, and warranty registration on your behalf.

Why Choose A&O for Boiler Installation?

Gas Safe registered engineers (No. 979554)
40+ years installation experience
All leading boiler brands supplied and fitted
Full commissioning and warranty registration
System flush included where required
Landlord and homeowner certificates provided

Our Process

Free Assessment

We visit your property to assess heating requirements, pipework condition and recommend the right boiler.

Estimate

A clear, itemised estimate is provided with no hidden charges.

Installation Day

Our engineers install the boiler, upgrade controls if needed, and test all connections.

Commissioning

The system is fully commissioned, balanced and explained to you.

Certification & Warranty

We register your warranty and provide your Gas Safe certificate.

Frequently Asked Questions

How long does a boiler installation take?

Most boiler swaps take 1 day. New installations with pipework modifications may take 2 days.

Which boiler brands do you install?

We install Worcester Bosch, Vaillant, Ideal, Baxi, Viessmann and other leading brands.

Do I need a new boiler or can mine be repaired?

We'll give you an honest assessment. If your boiler is over 15 years old or repairs are becoming frequent, replacement is often more cost-effective.

Is your boiler installation guaranteed?

Yes. All our installations are Gas Safe certified and backed by the manufacturer's warranty plus our own workmanship guarantee.