Hi, just my first post but I cant seem to find an answer on this great site. We have on deposit a Lopi Leyden freestanding stove which has a 4" output. We have a corner of my 1700 sf house main floor to put the stove. I want to do a standard straight out through the wall, then T up 5' to a vent, pretty standard stuff. My question is on the pipe itself. I have priced via the Internet the pipe, which is standard for Selkirk and Metalbestos brands, and they both run about $325-400 for materials. Is there a difference in qualities of pipe for either brand?. The only detrimental I could find was that the duravent (Selkirk) may have some issues with joint leakage on the elbows. I dont want to buy junk to vent my $3600 stove. The selkirk seems to be the "kit" offered by Lowes/Home Depot, and the vent looks a little odd, like a snorkel. Our dealer quoted us $500 materials and $550 labor, but it looks pretty easy as an installation other than lugging a 400 pound stove into the house. Anyone have any suggestions/recommendations? As part of the install, we have a southern facing for our vent where we pick up westerly crosswinds. We have a oil burner direct vent on that same side 5' away from our proposed pellet vent which had issues last year with blowback into the house on windy days. The direct vent is about 3' off the ground and the pellet vent about 8'. Would a windbreak fence help or harm this further? Also, I bought 4 tons of pellets (at $285 a ton plus $40 delivery). In a typical season, Ive been told that for similar sized houses in Maine, people have used from 3-4 tons. One of the heat use calculators based on oil use compared to potential pellet use puts me at 8 tons, as we used about 600 gallons of oil last year. I dont want to freeze in February, whats a good gauge of reality here? We kept the house at 67, its well insulated and a newer home. Lastly, I plan to use my oil burner as backup heat to the pellets, but a neighbor said I should keep it cycling at temperature to keep my basement heating pipes from freezing. My basement to main floor is uninsulated, with PEX tubing, and my hotwater supply is currently off the boiler into a hw holding tank, hoping to swap that to electric soon as well. What mix of heating do you do to keep everything thawed out and running? Thanks for helping out the new guy!