Gas and Oil-fired Water Heaters Caution
The installation of insulating blankets or jackets on gas and oil-fired water heater tanks is more difficult than those for electric water heater tanks. It's best to have a qualified plumbing and heating contractor add the insulation.
- If you want to install it yourself, read and follow the directions very carefully.
- Keep the jacket or blanket away from the drain at the bottom and the flue at the top.
- Make sure the airflow to the burner isn't obstructed.
- Leave the thermostat uncovered, and don't insulate the top of a gas water heater tank - the insulation is combustible and can interfere with the draft diverter.