A new boiler installation in Worthing replaces an old or failing unit, or fits a boiler for the first time. All gas boiler installation work must be carried out by a Gas Safe registered engineer, so checking registration is essential before booking, and getting the right size matters as much as the brand.
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A boiler installation is a chance to reassess whether the current setup actually suits the property - the right output for the number of bathrooms and radiators, the right type (combi, system or regular) for the existing pipework, and sensible positioning for servicing access later. Anyone carrying out gas work, including a new boiler installation, is legally required to be on the Gas Safe Register - always check an engineer's current registration on the official Gas Safe Register before booking, since registration is scoped to specific categories of gas work.
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Clear guidance on checking Gas Safe registration before any gas work starts - see our Gas Safe guide.
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Age, repeated faults, and rising repair costs relative to a new unit are the main signals worth weighing before choosing installation over repair.
There's no single trigger point that applies to every boiler - it depends on the specific fault, the age and condition of the unit, and how the numbers compare. See our dedicated guide on whether an older boiler is worth repairing or replacing for the questions worth working through before deciding.
Combi, system and regular boilers suit different property types and hot water demands, and the right choice depends on your existing pipework, water tank setup and number of bathrooms.
A combi boiler heats water on demand and suits smaller properties or those without loft space for a tank. A system or regular boiler works alongside a hot water cylinder, which can suit larger households or properties with multiple bathrooms running simultaneously. If your home has, or could use, a water tank or cylinder, see our guide on water tank and cylinder installation for how that fits alongside a boiler choice.
Anyone carrying out gas work is legally required to be registered with the Gas Safe Register, and this applies in full to new boiler installations.
This is a legal requirement rather than a recommendation. Always check registration on the official Gas Safe Register before booking any gas work, including installation - the register lets you confirm both current registration and the specific categories of gas work an engineer is registered for. See our Gas Safe guide for the detail behind this.
| scenario | typical scope | key consideration |
|---|---|---|
| Like-for-like replacement | Swap old unit for new in the same position | Confirm current output still matches household demand |
| Boiler type change (e.g. regular to combi) | Repositioning, pipework changes, removing an old tank/cylinder | Bigger job - survey needed to confirm feasibility |
| First-time installation | New pipework and flue run from scratch | Positioning and ventilation need early planning |
A straightforward like-for-like swap is usually the quickest option; changing boiler type or repositioning it takes longer since pipework and flue routing need more work. A survey gives a realistic timeframe for your specific job.
Most domestic boiler installations don't need planning permission, but flue position and any external work should still meet Building Regulations. A Gas Safe registered engineer can confirm what applies to your specific installation.
No - gas boiler installation must legally be carried out by a Gas Safe registered engineer. Always check registration before booking any gas work.
This depends on the number of bathrooms, radiators and hot water demand in your property, not just the size of the house - a proper assessment avoids under or oversizing the new unit.
