Online retailers like Heatable or BOXT have revolutionized the process.
Replacing a boiler is rarely a "fun" purchase, but it is one of the most important investments you’ll make for your home’s comfort and energy efficiency. With so many retailers, local pros, and online options, the big question is: 1. Online Specialists (The "Quick & Transparent" Route)
According to 2025 and 2026 industry reviews, these are the heavy hitters: Top 5 Combi Boilers | 2026
They know the local water conditions and housing types. You often get better long-term aftercare and a technician who treats you like a neighbor, not a ticket number.