The number of LED lights, size of the room, number of plants and any air ventilators in place will determine the costs for starting a room, and some may be as little as $1,000 dollars to as much as $10,000 dollars, and most of the costs will come from electrical items. One of the largest budgetary issues you will find when buying equipment, such as air ventilators and growing products, will be the costs for these items, as many of these products can cost as much as a few thousand dollars to as little as a few hundred dollars. It is always better to do homework on grow lights, air-cooled lights and air ventilation systems to get an idea for the best equipment for your area.
The room is just as important as the equipment you buy for your grow room, and the size of the room will also decide how many plants you can have at any given moment. Most rooms should be colored white to best bounce light from the walls, and the main light source should be hung above the plants. It is best to get an idea as to where equipment will actually be placed once within the room, such as where lights will hang, pots will go and what upgrades for air circulation will be required. By using masking tape and sketches to label the location for equipment, you'll get a better idea of how large your operation can be and the type of equipment you can buy.
One of the most important pieces of equipment will be the LED grow light in the center of the room; for small operations, only one light may be necessary, but for more ambitious operations, several lights may need to be bought. The LED light panel you end up purchasing will be used every day for extended periods of time, and it is crucial that you go ahead and invest in a superior panel over a cheap one, as less expensive, poorly designed lights will not last as long and will not help grow plants well. If you spend money on a cheap panel, your results will show and your lights may die out quicker than expected.