W. K. Lis
Superstar
If you have a high efficiency furnace or boiler, the intake vents probably were installed to be 30 centimetres (12 inches) above the ground or snow. It's the "snow" part you should be concerned about. With all the snow we have been getting, I think there is little or no clearance between the snow and your furnace vents.
Please clear the snow away from your furnace vents.
Please clear the snow away from your furnace vents.