Conventional boiler with hot water cylinder in a London airing cupboard

Conventional Boilers

Conventional Boilers in London

Perfect for traditional heating setups

Reliable hot water delivery for older properties with existing tank systems.

Also known as regular or heat-only boilers, conventional systems are ideal for London homes with traditional heating layouts. Ninja Boilers installs and replaces conventional boilers from leading brands — backed by 0% finance and Gas Safe engineers.

Ideal for older properties Works with existing tanks Up to 10-year warranties 12-month 0% finance

Free, No-Obligation Quote

Get a Free Quote

Tell us about your boiler — we'll come back with a fixed quote.

Or call us directly on 020 3576 5825

Benefits

When a conventional boiler is the right choice

Conventional boilers use a hot water cylinder and a cold water storage tank — usually in the loft. They're well suited to homes with older pipework and multiple bathrooms.

Great for Older Properties

Works with traditional radiator systems and existing tank setups — minimal pipework changes needed.

Strong Hot Water Supply

Reliable flow to multiple outlets, with low mains pressure handled comfortably.

Easy Like-for-Like Swap

Replacing an old regular boiler with a modern, efficient model is typically quick and straightforward.

Pros & cons

What is a conventional boiler?

Conventional boilers heat your radiators directly and pass hot water into a separate cylinder for taps and showers. The cold water tank in the loft feeds the cylinder under gravity.

  • Pro: Reliable hot water flow at multiple taps
  • Pro: Compatible with older radiator systems and low pressure mains
  • Pro: Straightforward replacement for existing regular setups
  • Con: Takes up more space (cylinder + loft tank)
  • Con: Slower to recover hot water once cylinder is depleted

Our Process

A simple, hassle-free journey

  1. 01

    Survey

    We assess your existing pipework, tank position and hot water needs.

  2. 02

    Recommend

    Tailored boiler advice from Gas Safe engineers — no upsell.

  3. 03

    Install

    Fast, tidy fitting with minimal disruption to your home.

  4. 04

    Finance

    Spread the cost with 12 months 0% interest finance.

  5. 05

    Aftercare

    Annual servicing options to protect your warranty.

Why Choose Us

Why choose Ninja Boilers

Trusted local engineers serving every London borough

Gas Safe registered — all installations certified

Upfront, transparent pricing

Fast turnaround — install in as little as 24 hours

Flexible finance with 0% interest

Warranty-backed installations from major brands

FAQs

Frequently asked questions

Upgrade your conventional boiler today

Reliable heating for traditional London homes with 0% finance. Call 020 3576 5825.