1A
Very Hot–Humid
Miami, Florida
Uninsulated atticR30
Find the climate zone that applies to your home.
Use the official county or Canadian lookup first. The example cities help explain each zone, but they do not define your address.
United States
DOE/PNNL climate labels and ENERGY STAR retrofit guidance.
2A
Hot–Humid
Tampa, Florida
Uninsulated atticR49
2B
Hot–Dry
Tucson, Arizona
Uninsulated atticR49
3A
Warm–Humid
Atlanta, Georgia
Uninsulated atticR49
3B
Warm–Dry
El Paso, Texas
Uninsulated atticR49
3C
Warm–Marine
San Diego, California
Uninsulated atticR49
4A
Mixed–Humid
New York, New York
Uninsulated atticR60
4B
Mixed–Dry
Albuquerque, New Mexico
Uninsulated atticR60
4C
Mixed–Marine
Seattle, Washington
Uninsulated atticR60
5A
Cool–Humid
Buffalo, New York
Uninsulated atticR60
5B
Cool–Dry
Denver, Colorado
Uninsulated atticR60
5C
Cool–Marine
Port Angeles, Washington
Uninsulated atticR60
6A
Cold–Humid
Rochester, Minnesota
Uninsulated atticR60
6B
Cold–Dry
Great Falls, Montana
Uninsulated atticR60
7
Very Cold
International Falls, Minnesota
Uninsulated atticR60
8
Subarctic
Fairbanks, Alaska
Uninsulated atticR60
Canada
NRCan climate-zone and roof/ceiling comparison guidance.
4
NRCan Climate Zone 4
Confirm with current Canadian guidance
Roof / ceilingR45 (RSI 7.9) recommended minimum roof/ceiling value
5
NRCan Climate Zone 5
Confirm with current Canadian guidance
Roof / ceilingR55 (RSI 9.7) recommended minimum roof/ceiling value
6
NRCan Climate Zone 6
Confirm with current Canadian guidance
Roof / ceilingR60 (RSI 10.6) recommended minimum roof/ceiling value
7a
NRCan Climate Zone 7a
Confirm with current Canadian guidance
Roof / ceilingR80 (RSI 14.1) recommended minimum roof/ceiling value
7b
NRCan Climate Zone 7b
Confirm with current Canadian guidance
Roof / ceilingR80 (RSI 14.1) recommended minimum roof/ceiling value
8
NRCan Climate Zone 8
Confirm with current Canadian guidance
Roof / ceilingR80 (RSI 14.1) recommended minimum roof/ceiling value
Check the zone for your address
For a U.S. property, use the current PNNL county data or the code source accepted by the local authority. For a Canadian property, use the NRCan zone method and applicable provincial or local requirements.
Climate profiles are not forecasts, weather normals, permit determinations, or product approvals.
See the methodology