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How many watts do you need per square foot?
The number of watts = area x 10. This result is valid for houses containing rooms whose ceilings are 8 feet high. In the case of modern homes having higher ceilings than 8 feet, the rule of thumb for the calculation is 1.25 watts per cubic foot.
How big of a heater do I need for a 2 car garage?
30,000 – 50,000 BTU
To heat an average two car garage, you’ll need a garage heater that is capable of heating roughly 6,000 – 9,000 cubic feet of air. We recommend getting a 30,000 – 50,000 BTU garage heater to get your two car garage to a comfortable temperature.
What size heater do I need for 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 a 60,000 Btu garage heater 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 many lumens do I need for a two car garage?
The Illuminating Engineering Society (IES) guidelines recommend a minimum of 50 lumens per square foot of space. The average one-car garage needs a minimum of 13,200 lumens, while a two-car garage requires a minimum of 20,000 lumens.
How do you calculate lighting load per square foot?
General lighting and receptacle loads Table 220.12 in the National Electrical Code considers a residence a listed occupancy at 3 VA per square foot; therefore, the general lighting load is determined by multiplying the square footage. For example, 2,800 square feet times 3 VA is 8,400 VA.
How many watts does it take to heat a 3 car garage?
1 sq ft = 10 W = 34.1 BTU
| Garage Size | Power in Watts | Power in BTUs |
|---|---|---|
| 620 sq ft (31×20 3 car garage) | 6,200 W | 21,200 BTU |
| 800 sq ft (40×20 4 car garage) | 8,000 W | 27,300 BTU |
| 1000 sq ft | 10,000 W | 34,100 BTU |
| 1500 sq ft | 15,000 W | 51,200 BTU |
How do you calculate garage lighting?
Measure your garage to determine your true light output needs. The Illuminating Engineering Society (IES) Lighting Handbook recommends 50 lumens (a measure of light output) per square foot in residential garages and 300 lumens per square foot in workshop areas.
How many lumens do you need for a work shop?
A general rule of thumb is to use 130 to 150 lumens per square foot of work space. For example, a 40-watt fluorescent bulb puts out about 2,200 lumens. A 60-watt incandescent bulb puts out about 800 lumens.
How do you calculate the lighting load of a building?
How many Watts Does It take to heat a garage?
The label on an electric heater will tell you what wattage it is, giving you an idea of how much space it can heat. As a general rule, you want 10 watts per square foot of garage space. A single watt of energy is the power required to produce 1 joule of energy per second.
How to estimate the size of a garage heater?
How to Estimate Garage Heater Size. There are two ways to estimate the size of your garage heater. The simplest way is to follow the rule of 10 watts per square foot of floor space.
How many watts do I need for a small garage door opener?
As a general rule, you want 10 watts per square foot of garage space. A single watt of energy is the power required to produce 1 joule of energy per second. It is calculated by measuring the amount of electrical energy inside the machine and the amount of pressure needed to move it.
What BTU do I need for a 484 square foot garage?
Find a heater with a BTU output that matches your results. For example, if your uninsulated garage is 484 square feet, your formula is 484 / 200 x 9,000, or 21,780. You need a heater with at least a 21,780 BTU output.