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  Manufactured Home Cooling Equipment Sizing Guidelines
For ENERGY STAR® qualified manufactured homes and homes built to the HUD standards

You may download the guidelines here (3.8 MB)

Oversizing cooling equipment: a costly mistake

The guidelines offer a simple look-up procedure to assist equipment specifiers, HVAC contractors, home installers, retailers, manufacturers, and electric utility staff select heat pump and air conditioner capacity for new manufactured homes. The guidelines were developed to help eliminate the all-too-common problem of choosing equipment with far more cooling capacity than the home needs.

Oversized HVAC equipment is recognized as a common industry problem that erodes energy efficiency and lowers customer satisfaction. Consumers overpay in two ways. First, they are buying equipment that has more cooling capacity and is more expensive than they need. Second, once installed, oversized equipment cycles on and off frequently, shortening equipment life, lowering efficiency, and increasing power bills. Oversized equipment also can lead to moisture problems within the home.

The Sizing Table


ENERGY STAR is a nationally recognized, voluntary labeling program designed to identify and promote energy-efficient homes, buildings, and products to consumers and business owners across the United States. The U.S. Environmental Protection Agency is responsible for administering the ENERGY STAR for Homes program. An ENERGY STAR qualified home is at least 30% more energy efficient in its heating, cooling and water heating than a comparable home built to the 1993 Model Energy Code. This increased level of energy efficiency is met by successfully integrating an energy efficient building envelope (effective insulation, tight construction, advanced windows), energy efficient air distribution (air-tight, well-insulated ducts), and energy efficient equipment (space heating and cooling and hot water heating).

ENERGY STAR qualified homes typically require less cooling capacity because their high insulation levels and tight construction slow the transfer of heat from outside into the home, and their tight air distribution systems minimize the loss of conditioned air from the ducts.

For additional information and materials on the ENERGY STAR qualified manufactured home program, click here.

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