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 As a rule of thumb, when you are heating an area over 130sq ft., you will likely use a 240v system(s). Why? Here is the reasoning behind this recommendation:

 

• 120v systems provide more options for covering smaller areas; similarly, 240v systems provide more options for larger areas. • As you will note on each flooring page, there is a product link where you can see the sizes available, their respective volts and the amount of amps each size will draw.

 

• Whether you are using one or several heating systems, each specially designed thermostat that will power them can handle 15amps max. Anything more than that and you need to purchase a an additional thermostat. • The 240v products use less amperage which might help if you have limited space/breakers in your electrical panel.

 

• 240v systems can also be used as a primary heating source. Therefore, if that is your goal, be sure to consider purchasing a 240v system.

 

The bottom line:  The more heating systems and thermostats you need to purchase will affect the total cost. If you tried to heat a large area with 120v systems, you would need more material and therefore more thermostats to power them. However, this voltage would be ideal for smaller areas. Click here to view loose wire sizes and specs.