Do not overload extension cords. Make sure plugs are wired correctly. Prolonged running of kitchen and bathroom exhaust fans and use of power attic vents can remove as much as a house-full of air in 20 minutes. It is possible in such situations to starve your furnace of air. This can lead to incomplete combustion and backing up of wastes such as carbon monoxide into the home.
Hot water can cause severe burns instantly.
This temperature also ensures sufficient hot water for hygiene purposes. Pay attention to natural gas operation Report all leaks or gas smells immediately. Look for yellow or orange gas flames. Gas flames should be blue. Note any staining, sooting or discolouration on or around gas appliances.