boiler, it may work for a month even a year or two,
but it is still an old boiler.
Rule of thumb is when your boiler decides to have a break and stops working,
call in the repair man, ask his advise on what is the best thing to do.
Most boiler repair engineers will tell you,
repair once then should it decide to have a another holiday to replace it. It all depends on how the boiler has been looked after over its life.
The repair may be something simple to get the boiler working again, but if it needs parts, then you have to start thinking is this going to be a regular problem. If you have had the boiler serviced each year then your engineer would have advised you of what the condition of the boiler is and if anything shows signs of problems for the future.
A new heating system or boiler sounds like a big cash outlet, and it can be, but in comparison to what you could spend on ongoing repairs, it might actually be cheaper. Plus, it is an opportunity to review the type of central heating system you have in your property and to perhaps make better use of space, by removing hot water cylinders if you install a combi instead of an old system boiler for instance.
The final element to making a decision is the environment, as there is no doubt that climate change is a massive issue for everyone. Newer, high efficiency models not only save you money but help with the environmental issues we face as a nation and the world at large.