H1 schedule method calculator

Check a house against the H1/AS1 5th edition schedule method: each element's construction R-value against the minimum for its climate zone, and the limits on glazing, skylights and doors. It also compares heat loss with a reference house and gives Good Goods products for each element.

For H1/AS1 5th edition only. The 6th edition removes the schedule method, and the 5th edition can only be used until 26 November 2026. What changes. Running cost figures use typical assumptions and are indicative. For quantities only, use the estimator.

Project

Project name

Location

Gross floor area

m²

Climate zone

Zone 1 districts: Far North, Whangārei, Kaipara, Auckland, Thames-Coromandel, Western Bay of Plenty, Tauranga, Whakatāne, Kawerau, Ōpōtiki.