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While removing every snowflake from your roof is unnecessary, you should remove a significant buildup of snow. Since snow is wet and heavy, it can easily cause damage to your roof, which can lead to needing costly repairs. 

Additionally, when the snow melts but has nowhere to go and refreezes, it can create an ice dam, causing mold concerns due to water leaking into your attic and ceiling. For these reasons, it’s best to hire a snow removal professional to clear heavy snowfall from your roof as soon as possible.

Generally, snow removal from a roof should occur once over six inches of snow accumulates, especially if you notice that ice dams have formed. Without ice dams, you can let the snow accumulation hit 12 inches before removing it. However, the amount of snow that is too much for your roof also depends on the sturdiness of your roof and the compactness of the snow. If your roof needs maintenance or has structural issues, it’s best not to let the snow accumulate too much for fear of collapsing.

When starting the engine, you typically leave the choke on a snowblower in the "choke" or "closed" position. After starting, let the engine run for a few minutes to warm up. Then, gradually open the choke, moving it to the "open" or "run" position, allowing more air into the engine and transitioning to a normal fuel-air mixture. The exact duration varies based on the snowblower model and ambient temperature, but as a general rule, you should open the choke once the engine has stabilized and runs smoothly, typically within a few minutes.

It’s the reverse of home de-winterization. To winterize, you purge your plumbing system (including your water heater and all piping) of water. Some experts also recommend filling fixtures with an antifreeze solution. Other tasks involve winterizing sprinklers, sealing foundation vents, check weatherproofing around doors and windows, and more.