This is the industry standard for estimating equipment sizing loads associated with residential structures. Periodic updates ensure that suggested heat-loss, heat-gain calculation procedures and corresponding data tables are compatible with modern construction practices. Covers the calculation procedures for single-family detached homes and introduces procedures for zoned systems and multifamily structures.

With step-by-step examples, Manual J shows you how to calculate the heating and cooling loads of single-family detached homes, mobile homes, condos, townhouses and apartment buildings. 38 figures and 16 tables cover all the standard residential construction methods.

Topics Include:

• Basic principles of heat transfer, R-values, U-values, and heat transfer multipliers
• A step-by-step example of a single-zone, single-family, detached calculation for a whole house and room-by-room.
• Sample calculations for multi-zone variable-air-volume systems and multi-zone split-coil systems
• Mobile home load calculations
• An optional procedure for making leakage area and infiltration CFM calculations on a component-by-component basis (Berkley Model)
• Review of the methods used to estimate annual energy consumption and operating cost.