Lightweight and easy to carry, the EG7500DGP provides 25,589 BTUs while efficiently heating areas up 750-sq ft.
The heater provides 17,060 and 25,589 BTUs while efficiently heating areas up 750-sq ft.
For a 1 car garage with 200 sq ft to 300 sq ft, the estimated heater size is 15,000 to 25,000 BTUs. For a 2 car garage with 500 sq ft to 700 sq ft, the estimated heater size is 30,000 to 45,000 BTUs. For a 3 car garage with 750 sq ft to 900 sq ft, the estimated heater size is 45,000 to 55,000 BTUs.
1) At a one hour time period, multiply 7.5kW x . 161 = $1.21 per hour.
To size a circuit breaker for a heater, you should select a breaker that is rated at 125% of the heater's rated amperage , which means choosing a breaker that is 25% larger than the calculated amperage draw of the heater.
At single phase 7500 Watts, the Current I = 7500/240 = 31.21 Amperes assuming the Power Factor is not considered.
Garage Square Footage
Furnace capacity is often measured in British Thermal Units (BTUs), and the rule of thumb is to provide 25 to 30 BTUs per square foot. For example, if your garage is 400 square feet, you'll need a furnace with a capacity of 10,000 to 12,000 BTUs.
Even if you're only planning to run a few quick errands, it's best to turn off the unit and unplug it anytime you leave the garage. In addition, you should avoid leaving your garage heater running all night while you're asleep. The unit could overheat, short-circuit or tip over, causing a fire to break out.
1500 watts for 200 sq. ft., 4000 watts for 500 sq. ft., 4800 for 600 sq. ft.
A garage heater that is too large for the space will not heat the space more quickly. A heater that is too large for the room will continue to heat for an extended period of time beyond the temperature set point, wasting energy. We call this a temperature swing.
Heats up to 950 sq. ft.
The average sized 2 car garage's square footage usually ranges from 400 (20×20), 576(24×24), and 720 (24×30) square feet.
Calculating size
Take the product of 12' x 25' to get a total of 300 square feet. Then multiplying 300 square feet by 25 BTUs means you need 7,500 BTUs of cooling capacity.
The average 2 car garage is around 500 sg ft. A 4000 to 5000 watt heater would keep it comfortable.
Simple ohms law states amps multipled by volts equals watts so…to rearrange this would be, 7,500 watts divided by 240 volts equals 31.25 amps.
In-Surface Radiant Heat
Unlike other heating methods, it heats a surface, rather than the air around it. In-surface radiant heat is one of the most efficient ways to heat a garage. Pros: Versatile option that can be installed in your garage floors, walls, or ceiling.
Comfortably, and with an efficient on/off cycling rate about 400 sq. feet. That would be the “sweet spot” between comfort and efficiency. You could easily go to 500 sq.
A good rule of thumb to calculate the size of the electric heater you'll need is 10 watts per square foot of space. For example, if your garage is 14' x 22', it has 308 square feet of floor space. You'd multiply that by 10, which would give you 3,080, which is approximately the wattage you'd need.
When it comes to heating your garage, you do not need to heat it to a comfort level equal to the remainder of your home (often between 65°F – 68°F). Keeping your garage thermostat steady at a temperature between 40°F and 50°F will give you benefits to the three listed items above.
According to BobVila.com, the average life expectancy of a gas garage heater is anywhere from 15-20 years. But as you likely know already, there are always factors that come in to play that will preserve or destroy the life of a heater.
The most cost-effective method to heat a garage is often through insulation and sealing gaps first, as this reduces the amount of heat required. Once that's done, portable electric heaters have the lowest initial cost outlay.
For example, a 500-square-foot room will require a heater with 5,000-watt output to fully heat the space.
A garage heater that is too large for the space will not heat the space more quickly. A heater that is too large for the room will continue to heat for an extended period of time beyond the temperature set point, wasting energy. We call this a temperature swing.
A rough estimate for a 3-car garage would be around 36 feet wide and 24-36 feet deep; however, it could be larger or smaller depending on the specific design and layout. When it comes to square footage, it should be around 864-1296 square feet.