Why does not freshwater lakes become salty eventhough it meets ocean at somepoint? Do oceans grow more or less salty over time? If the oceans were only as salty as a fresh water lake, and had always been that way, would there be more life in the oceans that had evolved ...
Replacing a boiler typically costs an average of $50-$300, but this price can be drastically higher depending on where you live and the location of the boiler. Replacing leaking, aging, or bad ductwork costs an average of $35-$55 a linear foot for labor and materials, depending on the length and type of ducts.
There are a multitude of tasks that a plumber would undertake and these vary in price accordingly. Installing a boiler could cost around Â£400 - Â£500 labour costs with the cost of the boiler itself ranging between Â£500 to Â£1300 for a standard boiler for a three bed semi-depending on type, make, model and quality.