If your home has a boiler system, avoid covering radiators with screens or blocking them with furniture. It's also a good idea to add a reflecting panel behind radiators - you can purchase one at a home center or make one yourself with a plywood panel and aluminum foil.
There are three different types of snowthrower drives available: auger, wheel and track. With an auger drive, the auger (the snow gathering component of the machine) propels as the user pushes the snowthrower. With a wheel-propelled drive system, the user depresses the handle and the auger spins. Like a propelled lawn mover, the wheel system helps propel the snowthrower. With a track drive, the wheels of the snowthrower are replaced with rugged track treads, like a tank. It is great for maneuvering through heavy snow, because slippage is virtually eliminated.