11.   At first, she said, she thought the blast that injured her on Tuesday was caused by a gas heater.

12.   A fog of butadiene rolled out across neighborhood lawns until it reached the pilot light of an outdoor gas water heater, which ignited the chemical.

13.   But it was winter, so there was a little bit of light from the gas heater shining on my mother and brother.

14.   Flatland tobacco is flue-cured, by propane gas heaters, and has a harsher taste.

15.   Is that the case for those who have gas furnaces and gas water heaters in their basements?

16.   Locate it away from heat sources, such as fireplaces, electric or gas heaters, radiators and even television sets.

17.   Only the gas heaters and the chirping insects of nightfall interrupt.

18.   Q. The overflow safety valve of my gas hot water heater occasionally overflows, just a pint at a time.

19.   Set gas heaters on pilot only and cut the power to electric heaters.

20.   Sources of indoor air pollution include gas heaters, kerosene heaters, wood-burning stoves and cooking ranges.