There are several signs that suggest you might need a new boiler.
Unusual smells
If there are unusual smells coming from your boiler, it could be a sign that it’s leaking poisonous carbon dioxide. You should open your windows and call a Gas Safe registered boiler engineer immediately.
High heating bills
If your heating bills are getting larger and larger every month, it’s a sign that your boiler’s not up to scratch. Replacing it with a new, energy-efficient boiler will help you lower your bills and start saving.
Repair cost
If the cost of repairing your boiler is almost the same as buying a replacement one, why waste money on something that could break down again? A replacement will save you money in the long run.
Water or soot
If you find water or soot on the floor near your boiler then there’s definitely a problem with it. You’ll need to call out an engineer to have a look, even if you don’t end up replacing your whole boiler.
Water not heating
If your boiler is taking an unusually long time to heat your water or not doing it properly then you may need a new one. You should speak to a boiler engineer to get some professional advice.
Age
If your current boiler has been around for 15 years or more, it’s probably time to replace it. You’ll save money on your heating bills and get something more reliable with an energy-efficient replacement.