2026-05-13

What's the Average Cost of a New Boiler Installation in 2026?

Boiler installation costs vary quite a bit depending on the type of boiler, your existing system, and the complexity of the job. Here's what actually drives the price.

What affects the cost

• ✓ Boiler type - combi, system, or regular boilers differ in price and installation complexity
• ✓ Like-for-like swap vs changing boiler type, which can involve extra pipework
• ✓ Brand and output size, matched to your property's hot water and heating demand
• ✓ Access and location - a straightforward kitchen cupboard swap is quicker than a loft relocation
• ✓ Additional work such as a new flue run, condensate pipe, or filter

Why quotes vary so much

Two "boiler installation" quotes can look very different because one might be a basic swap while another includes a full system upgrade, new controls, and a power flush. It's always worth getting a detailed, itemised quote rather than comparing headline prices alone.

Getting an accurate quote

The only way to get a genuinely accurate price is a proper assessment of your current setup, your home's hot water demand, and what you actually need. Our installation team provides clear, written quotes with no hidden extras before any work is booked in.