Building Climate Zone Description "Building Climates Zones" or California Climate Zone Descriptions for New Buildings California is divided into 16 climatic boundaries or climate zones, which is incorporated into the Energy Efficiency Standards (Energy Code). CLIMATE ZONES, MOISTURE REGIMES, AND WARM-HUMID DESIGNATIONS BY COUNTY Figure C301.1 Climate Zone. We created an Energy Code Adoption Toolkit that includes a guide on the significant changes from the 2015 to the 2018 International Energy Conservation Code (IECC), cost comparisons between code editions, examples of stretch codes from other jurisdictions, and code compliance checklists. As a result of using different climate zone definitions, the two standards, though similar, are not equivalent. For details on the energy code adopted by New Jersey, including how it may differ from the IECC, please contact your local building code official. I loaded zip code & county data from the U.S. Census bureau into a database, which I combined with county -- climate zone mapping data that a colleague pulled from REScheck. In the early 2000s the US Department of Energy’s Pacific Northwest National Laboratory combined a number of disparate climate resources into the IECC’s current climate zone map. You may be aware, but the ASHRAE climate zones are changing a bit as of the publication of 169-2013. california climate zone by zip code pdf. Reserved. climate zone map for the DOE based on the IECC climate zone map. It may not be intuitively obvious why a U.S. climate zone map is so important to the construction industry. I counted 1,413 zip codes in the US that overlap counties with different climate zones (see attached pivot table). December 3, 2020. climate zones california by zip code Thanks to this Building America innovation, building science education, energy code development, and residential design can much Heating Climate zones and Cooling Climate Zones are mapped using the same seven areas shown below, as of the IECC climte zone map provided by the U.S. Department of Energy. To find your USDA Hardiness Zone, enter your zip code or use the map below. I am very impressed how the IECC clime zone map identified every county having a specific climate zone number 1-7 using the heating/cooling days calculation to determine equivalent areas in the US to categorize as similar climate zones. Hot-Dry climate zone Defined as: any region that receives less than 20 inches (50 cm) of precipitation annually and where the monthly average outdoor temperature remains above 45°F (7°C) throughout the year. Click here for more information about hardiness maps. Learn More U.S. Locations are assigned a climate zone based on Section C301.3.. climate zones california by zip code. Alternatively you can search for your zone by county through’s here. In prescribes insulation (r-value) requirements for both residential and commercial buildings. Determine your climate zone. If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this USDA map. Additional copies of this guide are available on You can also view the Guide to Determining Climate Regions by County. of the Climate Zone Map The 2006 code made a dramatic shift in the classification of climate zones. International Energy Conservation Code 2009 (IECC 2009) Chapter 1 Administration Chapter 2 Definitions Chapter 3 General Requirements 301 Climate Zones 302 Design Conditions. Post Author: Post published: December 2, 2020 Post Category: Uncategorized Post Comments: 0 Comments 0 Comments This newer database is different than the one used by the IECC. BUILDING ENERGY CODES Categories . Requires slab edge insulation in Climate Zone 3 and increases the R-value and depth of slab edge insulation in Climate Zones 4 and 5 [RE29, 32, 33, 36]. TABLE C301.1. meeting the state energy code. For example, Athens County in Ohio is in Climate Zone 5A according to the IECC but is in Climate Zone 4A, according to ASHRAE 90.1. Come be part of creating a clean, modern and thriving California. The International Code Council has a more fine-grained approach to climate zones, †as shown below in the map of the US from the International Energy Conservation Code (IECC). building climate zones by zip code. Building America IECC Subarctic Zone 8 Very Cold Zone 7 Cold Zones 5 and 6 Mixed-Humid 4A and 3A counties above warm-humid line Mixed-Dry Zone 4B So this makes looking up climate zone by zip code challenging if the project is located near a climate transition region. Primary Sidebar Climate Zone: Because the climate has such a large impact on energy use in our homes, the IECC 2018 codes are based within different “Climate Zones” there are basically 6 climate zones in the contiguous US, with two more represented in the coldest parts of Alaska. I am looking to take this one step further. Climate Zones is used by the International Residential Code (IRC) and Model Energy Code. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Using information from the 4,775 US weather sites, the PNNL created a definitive map with includes eight climate zones and three moisture zones which produce 24 potential climate designations. While this change in the climate zone map was a part of the major revision to help simplify the code and make both compliance and enforcement eas-ier, the climate zone revisions were a lengthy, very detailed and complicated process. Table C301.1 shall be used in determining the applicable requirements from Chapter 4. In the end I have a table with all 38,000+ U.S. zip codes mapped to a climate zone and moisture regime. Find your zone using the map below or enter your zip code. 1. of IECC climate zones 3 and 4 located in the “C” moisture category. The International Energy Conservation Code is increasingly the standard energy code that municipalities are adopting. In its May 2015 report entitled 2015 IECC: Energy Savings Analysis, the U.S.DOE concludes that new single and multifamily homes built to the 2015 IECC, compared with buildings built to the 2012 IECC, would result in an energy cost savings of approximately 0.82-0.63 percent for Illinois Climate Zones 4 … The energy models for the 2006, 2009, 2012, 2015 and 2018 versions of the IECC listed in the table may be downloaded either by specific IECC edition or as complete sets by climate zone. In order to determine what your required insulation values are, you must first determine which of the climate zones you fall in. US Climate Zone Map – DOE IRC CLICK TO ENLARGE The DOE map of U.S. Published by at December 2, 2020. Refer to the requirements for each building envelope area, based on your project’s Climate Zone IECC 2015 Requirements by Climate Zone 3. Increases the fenestration U-factor requirements in Climate Zones 2 thru 4 [RE35]. This page offers some general guidelines on the definitions of the various climate regions based on heating degree-days, average temperatures, and precipitation. Downloads. Each zone has a number, starting with 1 for the hottest US climate, the southernmost tip of … ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. 2. IECC = International Energy Conservation Code Year= Year of published Code. Building America determines building practices based on climate zones to achieve the most energy savings in a home. Building America and IECC Climate Zones The table below shows the relationship between the Building America and IECC climate zones. Introduced in 1998 and continuing the leadership role in energy codes that the ICC legacy organizations started over 20 years before that, the International Energy Conservation Code®(IECC) addresses energy efficiency on several fronts including cost savings, reduced energy usage, conservation of natural resources and the impact of energy usage on the environment. The Building America mixed-humid climate zone includes the portions of IECC zones 4 and 3 in category A above the “warm / humid” line. IECC Terminology "Climate Zone" has two components • Eight temperature-oriented zones (1-8) • Three named moisture regimes (moist, dry, marine) • Theoretically 8x3=24 distinct zones, but only 15 occur in U.S. Two additional climate specifications influence requirements Climate zones from Figure 301.1 or Table 301.1 shall be used in determining the applicable requirements from Chapters 4 and 5.