Why shouldn’t I get the biggest unit I can buy?

Over-sizing an air conditioner can be a dangerous thing. Proper sizing of an air conditioning system is essential to ensuring optimum comfort and efficiency. Oversized systems can short-cycle leading to humidity/condensation problems, excessive energy consumption and tremendous additional wear and tear on the equipment. One must also consider the duct sizing to prevent performance issues such as coil freezing, duct noise and air quality issues due to sweating. It is not our recommendation to over-size a comfort system unless duct design and supplemental dehumidification are considered.