How do know if I have a gas leak ? It's a ventless heater
...ing radiant flooring with a professional in our living greenhouse. But for now he has purchased a ventless wall heater. He claims he smells nothing. I smell it in the house as he installed it and I hear hissing. I no longer have asthma but my lungs have a hard time I am dizzy coughing. He won't listen how can I do this...