25th November 2019

familyhandyman
17

How many BTU's do I need to heat my garage?

A basic rule of thumb for forced-air heaters is 45,000 Btu to heat a two- to 2-1/2 car garage, and 60,000 for a three-car garage. The makers of low-intensity infrared tube heaters say that 30,000 Btu can heat a two to 2-1/2 car garage, and suggest 50,000 for a three-car garage.

How much watts of the heater would need for 400 square feet?

Therefore, a 1500 watt space heater (120 volts) can heat an area of 150 square feet, and a garage heater rated at 5,000 watts should be able to comfortably heat an area over 400 square feet.

What size of heater do I need?

What Size Electric Heater do I need?
Room Size (Sq Ft with 8 foot ceiling)Watts (Poor Insulation)Watts (Avg Insulation)
60 square feet750750
80 square feet10001000
100 square feet12501000
120 square feet15001250
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