Use of unvented kerosene space heaters can increase significantly the indoor levels of combustion products. To determine the amount of increase, tests have been conducted in a two-story test house using radiant and convective type space heaters. Emission rates of CO, CO₂, NO, and NO₂ were determined. As well, each heater was placed, in turn, in the living room, bedroom, and basement, and the levels of combustion products were measured in each room. Values of mixing factor to be applied to the general ventilation equation for estimating air contaminant levels were determined from the test results.

Units: I-P