Boiler Replacement Cost – Your Practical Guide

If your boiler is coughing, leaking, or throwing error codes, the first question you’ll hear is “how much will a new one cost?” The answer isn’t a single number, but a range that depends on a few clear factors. Knowing those factors helps you avoid surprises and keeps your budget in check.

What Drives the Price?

1. Boiler type – A combi boiler (the kind that supplies hot water on demand) usually costs more than a system boiler, which relies on a storage tank.
2. Fuel source – Gas, oil, and electric units have different price tags and running costs. Most Glastonbury homes use gas, so that’s the baseline most quotes will use.
3. Brand and efficiency – Higher‑efficiency models carry a premium, but they can save you money on bills over time.
4. Installation complexity – If your existing pipework needs upgrades, or the boiler sits in a tight loft space, labour costs rise.
5. Location and taxes – Local rates, disposal fees for the old unit, and any required certifications add to the final figure.

Overall, a standard gas combi boiler in Glastonbury runs between £1,500 and £3,000, including parts and labour. Premium models can push past £4,000, while a basic system boiler might sit under £1,500.

Repair vs Replace: Making the Call

Before you book a new boiler, ask yourself three quick questions:

• Is the fault covered by a warranty or insurance?
• How old is the unit? Most boilers last 10‑15 years; beyond that, parts become scarce and repairs pricey.
• Will the repair cost more than 50 % of a replacement?

If the answer to the last question is yes, replacement is usually smarter. A 12‑year‑old boiler that needs a new pump (£200) plus a heat exchanger (£600) is already edging toward a full‑unit price.

For younger units (under 8 years) with a single issue, a repair can be cost‑effective. A faulty thermostat or a broken fan can be fixed for under £150, extending the life of a perfectly good boiler.

Another tip: ask the technician for a detailed quote that separates parts, labour, and any extra work. This lets you compare the repair cost line‑by‑line with a fresh‑install quote.

When you decide on a replacement, look for a local installer who offers a fixed‑price package. Fixed quotes prevent hidden labour hikes once the job starts. Many Glastonbury companies also provide a free boiler efficiency check – a quick way to confirm you’re getting the right size for your home.

Finally, don’t forget the after‑care. A good installer will register the boiler with the manufacturer, set up an annual service, and give you a warranty that covers parts and labour for at least two years. That peace of mind is worth the extra few hundred pounds.

Bottom line: a typical boiler replacement in Glastonbury costs £1,500‑£3,000. Use the age of your current unit, the cost of the fault, and the quotes you receive to decide whether repair or replace saves you the most cash and keeps your home warm.