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.
If you are looking at natural gas fireplace inserts, then around $800 is a relatively low price for a very basic unit. The more full-featured models can easily cost $4,000 or more, with an average price range falling between $1,200 and $2,000.ost masonry fireplaces cost $5,000 or more due to the labor required to install each individual brick or stone within your home. A masonry heater (a very large stone stove) can cost upwards of $20,000 because of the tremendous amount of custom work that is required.