Is anyone running a Seton as an open system not closed? I have always had problems with trapped air even with vents. Still fighting problem of not heating house Been 3 yrs and have fine tuned about all I can. even turned furnace blower speed down this year. I am interested in any Heiss updates from this year also. Simple and inexpensive. Thanks
Seton W-90 w/HX
Seton W-90 w/HX