I keep the snow Knocked off the tarps for the stacks that I will be burning from and my makeshift shed with a tarp top, I have to, it won't hold much snow at all.
No, the little shed I have has a tarp top (roof) with not much support under it so I have to keep the snow knocked off, it's been working out okay for 3 years
My pellet furnace (Fahrenheit) and only a couple other Manufacturers. One being SBI (who makes my Enerzone Eurostar) with the Alterna (spelling). It's the only furnace that is approved to replace your main furnace because it has an electric back up and a A/C condenser option).