One thing that stands out when we work on older Brent properties is how much the heating system can change over the life of the house.
A 1930s semi-detached home, for example, may still have parts of its original heating arrangement alongside a newer boiler, replacement radiators and pipework added during later improvements.
The same can happen in older terraces that have been renovated or extended.
This does not mean the age of the property alone is a reason to powerflush it.
What matters is the condition of the heating circuit and whether contamination is actually affecting circulation.
If several older radiators are affected while newer sections are working normally, we need to understand how water is moving around the whole system before deciding how best to clean it.