Engineering tools and calculators

U-Value & Thermal Envelope

Layer up a wall or roof build-up by ISO 6946 and check the U-value against the SBC 602 and SBC 601 limits for the Saudi climate zone.

ISO 6946ISO 10456SBC 601

Room Air-Conditioner Size

The peak cooling load of one room, or of several rooms on one ducted unit, in watts, Btu/h and tons, hour by hour on the 21 July design day in 27…

ASHRAE Handbook: FundamentalsSASO 2663:2021