Water Heater Blanket Safety Tips 
 
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.
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