Why clients choose us
Gas Safe Registered
Certified and officially registered to ensure all heating work is completed safely, properly and to industry standards.
Boiler replacement specialists
Our team is fully trained in all types of boilers, helping us provide safe, practical advice and dependable boiler replacement services
Polypipe-trained specialists
We are fully trained by Polypipe manufacturers to install their underfloor heating systems, while also maintaining existing systems.
What we offer
Heating help from people who know the job
Cold mornings and unreliable hot water can make your home feel like hard work. We started Coastline Gas Services to give households a straightforward way to sort out heating problems, backed by proper experience and honest advice. With more than 25 years in the trade, we know you want us to do the job safely, cleanly, and without leaving you guessing. We bring that steady approach to every visit, helping you feel warm, safe, and back in control of your home again. We’ll take the worry out of your heating needs and help get your home back to normal quickly.
Practical support when your heating lets you down
Your boiler rarely picks a convenient moment to act up, does it? We step in with practical help for replacements, servicing, repairs, and underfloor heating so you can get back to a home that feels comfortable again. We work across Seaford and across Sussex with a calm, no-nonsense approach that prioritises safety. From a full new boiler to ongoing maintenance, we focus on work that makes daily life easier and heating bills easier to manage.
Budget Boiler
From £2400
Inc. VAT
Like-for-like boiler replacement with straightforward installation
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✓ Typical installation: 1 day​
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Included:​
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New entry-level A-rated boiler supplied and fitted
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Standard flue (up to 1 metre)
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Magnetic filter
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Existing thermostat reused where compliant
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Upgraded condensate routing where required
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Full commissioning and safety checks
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Building Regulations notification (Gas Safe)
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Removal and disposal of existing boiler
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5–7 year manufacturer's warranty (model dependent)
Mid Range
From £3000
Inc. VAT
A reliable boiler replacement package offering excellent value
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✓ Typical installation: 1 day
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Everything in Silver, Plus:​
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System cleaning or chemical flush
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Upgraded premium magnetic filter
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Smart thermostat, such as Hive, Nest or Tado
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Thermostatic radiator valves installed
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Priority aftercare
BEST VALUE
Top Of The Range
From £3500
Inc. VAT
A full boiler package for customers wanting a complete solution
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✓ Typical installation: 1–2 days​
Everything in Gold, Plus:​
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Premium A-rated boiler
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Full powerflush where required
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Radiator balancing
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Smart thermostatic radiator valves for individual room control
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Higher-warranty boiler options of up to 10–12 years
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Priority aftercare