I have recently (fewer than 30 days ago) had a new ac/furnace installed (Amana, model GMH9590HC). I turned on the heat yesterday, for the first time, and noticed that the furnace had veen vented through the wall. There was white "smoke" wafting, as from a dryer vent, except this "smoke" had an odor, drifted back into the house, made me dizzy, and gave me a headache. I turned the furnace off, opened the windows, and the symptoms disappeared.

I had been under the assumption that a furnace should be vented through the roof, but after consulting your message board, learned that high efficiency furnaces can safely be vented through the wall, using PVC pipe, which this furnace was.

I can live with the wall vent, although I do not like it, aesthetically. But should it emit white fumes? Should the fumes have an odor? And should it cause headaches and dizziness? This, of course, was not an issue with the old, 40-year-old furnace. The installer is a reputable, local business, with whon I have traded for thirty years. Your thoughts?

I am concerned regarding safety; my five-year-old grandson lives with me.

Thanks in advance for any information you may provide.