

How to calculate BTU per hourĪ qualified power and HVAC climate specialist can calculate the heat requirements of the space before recommending a portable heater or space heater rental. Also consider the number of people who will occupy the space more people generate more heat. An outdoor tent, for example, will need more heat to reach a comfortable temperature because it lacks insulation. The materials of the floor, walls and ceiling and the degree of insulation matters, too.

To answer the BTUs question, you’ll need to know the square footage of your space, the number of windows and doors and the height of the ceiling. Confined Space Entry & Rescue Equipmentīefore you rent a space heater, know how warm you want the space to be and how much heat output in BTUs you need to achieve it.

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