Hazardous chemicals can induce a hot zone, as occupants are in danger of it disrupting their biological processes. For example, if while driving down a highway, an oil tanker gets into a car accident and spills its load on the pavement and surrounding grass areas, those areas affected will be considered hot zones.
Costs to convert wood fireplace to gas. Installing a gas line and either vented or vent-free gas logs will cost from $500 to $2,500. (Note that the cost of installing vent-free gas logs is often about $200 more than the cost for vented.) Gas inserts cost $2,000 to $5,500. Expect to pay more for fireplace installation if workers are challenged to get the gas line to your fireplace.
The cost of running your gas fireplace will depend on the heating efficiency rating of your fireplace, the number of hours of use and the cost of natural gas. The cost of natural gas is often measured in Therms, or thousand cubic feet (Mcf).One Therm equals 100,000 BTU, and one cubic foot of natural gas contains approximately 1,000 BTU's.o using that equation, we'll determine the hourly rate for the following example: the fireplace runs at a rate of 50,000 BTU/hour, the cost of 1 Therm equals $0.65 and the cost of 1 Mcf equals $6.50. So, if your gas bill is measured in Therms you get: 50,000 BTU/hour Ã· 100,000 x $0.65 = $0.32/hour.