Electric-garage-heaters-zone-chart

Ever wonder if your calculating your BTU's correctly?
Here you will find a detailed lesson on getting what you need when it comes to Electric Heating!

How to determine Wattage requirements:

1. Multiply the Length and Width of the room you plan to heat (This will give you the Square Footage of the
room)

2. Find your location on the map below. This determines your basic heating zone.

3. The chart below the map lists insulation values based on the effectiveness of the insulation presently in
your room. Find your heating zone on the chart and the approximate wattage per Square Foot you will need.

4. Multiply the total number of Square Feet you calculated from step one by the approx. Wattage per SF
you just obtained from the chart. This will determine your total heating requirement in Watts for the room.

5. Since a Watt is equal to 3.412 BTU's simply Multiply the Wattage requirement by 3.412 and this will give
you your BTU's needed for the room.

Now! Lets do an example: We have a room 12'x15' We live in Zone 3 and Have Standard insulation. Based
on this information we will calculate our SF to 180. We will then take our 180 SF and multiply it by 8.2 Watts
which is what we need for living in Zone 3 and having Standard Insulation. This total Wattage requirement
will equal 1476 Watts. To calcualte the BTU's we simply take 1476 Watts x's 3.412 BTU's and we get 5036
BTU's This puts us in range of a 5000 BTU Heater!

Its as easy as that! (Please note your estimate may need to be increased due to strong wind,high
alititudes or other unusual conditions in your area)