A plunger and and bit of arm action! If you have a large home such as a big detached house, you’ll likely need a boiler with a kw to kw output, which is more costly. If your boiler is years or older, you could be losing heat and paying higher bills than you need to replacing your boiler can improve your heating's efficiency by up to % and could lead to savings of up to %*. Servicing the new orleans metro area for over + years! All other.