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To install a 50-foot long ridge vent, a roofing contractor will charge $409, which includes the labor and material. If you're a handy homeowner who has experience working on roofing projects, you can buy the ridge vent material for $125 and install it yourself, saving 69 percent, a nice reward for your work.
1 Prices of gas wall heaters vary depending on the design and energy output. 2  A 30,000 BTU vent free natural gas wall heater can cost $100 to $450 and can provide heat of up to a 1,000 square foot space.3  A 6,000 BTU LP gas wall heater will provide sufficient heat for a moderate room. A 30,000 BTU vent free natural gas wall heater can cost $100 to $450 and can provide heat of up to a 1,000 square foot space. 2  A 6,000 BTU LP gas wall heater will provide sufficient heat for a moderate room.