Space constrained product

means a central air conditioner or heat pump:

(1)  that has rated cooling capacities no greater than 30,000 BTU/hr;

(2)  that has an outdoor or indoor unit having at least two overall exterior dimensions or an overall displacement that:

(A)  are (is) substantially smaller than those of other units that are

(1)     currently installed in site‐built single family homes, and

(2)     of a similar cooling, and, if a heat pump, heating, capacity, and

(B)  if increased, would certainly result in a considerable increase in the usual cost of installation or would certainly result in a significant loss in the utility of the product to the consumer; and

(C)  of a product type that was available for purchase in the United States as of December 1, 2000.