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.
The cost of installing a new boiler will depend on the size and type of boiler you require, and the installation company you use. Generally, new boilers cost around Â£500 - 2,500. Installation costs can be just as high, also running from around Â£500 - 1,500 depending on the circumstances.