The hot summer sun can cause heat stress to tanks and this summer we experienced the hottest temperatures in many years. The damaging UV rays can bleach and weaken joints causing the seams to weep oil.
A freshly serviced boiler will burn the least amount of fuel possible when set and adjusted correctly. When we are called out to work on a boiler that is all sooted up, it could be working at 30% capacity. After we are finished, it will be around 90%