R-Values Worksheet 2. Prescriptive Energy Compliance can be demonstrated using one of the following options: 1. The CEC zones run from 1-16. Kenneth Walker Nra Response, The total number of HDD over the heating season indicates the relative severity of the winter for a specific location.The national model codes have divided the country into six climate zones, as follows:The climate zones are under the jurisdiction of the provincial governments, which may vary from those in the national model codes. Leave it to my beloved California to be different. Climate Zones is used by the International Residential Code (IRC) and Model Energy Code. IECC Climate Zones The table below shows the relationship between the Building America and IECC climate zones. TABLE 301.1 CLIMATE ZONES BY COUNTY, ALL ZONES ARE CATEGORY "A" OR, MOIST DESIGNATIONS Climate Zone 4 The new climate zones were set along county boundaries, making it easier for builders to determine what climate zone applied to a specific building. Building America and IECC Climate Zones The table below shows the relationship between the Building America and IECC climate zones. US Climate Zone Map – DOE IRC CLICK TO ENLARGE The DOE map of U.S. Climate zones from Table 301.1 shall be used in determining the applicable requirements from Chapter 4. The changes included a simplification of the climate zone map -- from an older zone map with 19 climate zones to the current map with 8 climate zones. The 2004 IECC Supplement was the first model energy code to adopt this new climate zone map. Use the simplified table of IECC building envelope requirements (below) to determine the basic prescriptive requirements for the thermal envelope associated with the jurisdiction. 2. At that time, ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) used 38 different climate groupings, while the IECC used 33 different zones based on county boundaries. The envelope performance requirements vary for each zone as detailed in the building requirements found on the back of this sheet. Here is a look at the different insulation and window factors they consider, and the requirements across the eight US climate zones. Alaska Energy Code Climate Zones by County LS = Fiberglass Insulation | ci = continuous insulation. Page 2 of 6 Revised 10/1/2020 . About RECA. The current climate-by-climate recommendations for window performance are shown below, and indicated on the US climate zone map per 2009 International Energy Conservation Code (IECC) on the following page. That’s a lot of climate chaos. In general, the climate zone provisions are determined simply by referring to the map (see Figure C301.1) or by looking at the tables [see Tables C301.1, C301.3(1) and C301.3(2)]. Ken. In July 2015 the Hawaii State Building Code Council (SBCC) unanimously approved the 2015 International Energy Conservation Code (IECC) with amendments. The code sets energy efficiency requirements for both residential and commercial buildings. RECA Mission and Members RECA Mission and Members RECA Mission and Members. Points To Consider Regarding Home Energy Efficiency When assessing the energy efficiency of a home, it is important to look at over-all energy performance instead of focusing on one item (such as insulation). Before the changes, the IECC was 193 pages long. Montgomery County Climate Zone. In 2003, with direction … 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. In prescribes insulation (r-value) requirements for both residential and commercial buildings. ACEEE estimates that over 90% of Arizona’s population is covered by either the 2009 or 2006 IECC. Use the simplified table of IECC building envelope requirements (below) to determine the basic thermal envelope requirements associated with the jurisdiction. which climate zone your county falls under. However, a jurisdiction is … My project was looking at the climate zones used by IECC (2006 specifically), which are 1-8 with an optional moisture description. Ken Girdley > Keith Burrows September 17, 2015 at 12:10pm. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. No statewide code. As a result of using different climate zone definitions, the two standards, though similar, are not equivalent. The regulations, created by the International Energy Conservation Code, or IECC, is designed to keep buildings as energy-efficient as possible when it comes to heating and cooling. Now get out there and design, build, and renovate in ways that work for your climate. A type of climate defined in the ASHRAE 169-2006 standard consisting of Climate Zone Number 3 and Climate Zone Subtype C. Climate Zone 3C is defined as Warm – Marine with IP Units CDD50ºF ≤ 4500 AND HDD65ºF ≤ 3600 and SI Units CDD10ºC ≤ 2500 AND HDD18ºC ≤ 2000 . The compliance path specified in ASHRAE 90.1 is also three-fold but different than the IECC: A type of climate defined in the ASHRAE 169-2006 standard consisting of Climate Zone Number 6 and Climate Zone Subtype A. In addition to the basic definitions above, the IECC also tells you county-by-county what the local climate zone is. In North Dakota if a city, county, or township elects to adopt and enforce building codes, it must adopt and enforce the State Building Code. R-5 insulation has been added as a requirement in Table C402.1.3 for heated slabs in all climate zones. The climate zone map was also adopted by ENERGY STAR for Homes in 2006. A U-factor of .31 has been added to table C402.1.4 as a minimum requirement for garage doors with glazing. Code Adoption and Change Process. Following SBCC adoption, the state followed the Administrative Rule path to state adoption and the counties followed the County Council path to […] 2. that bases requirements on 17 climate zones defined by discrete HDD ranges.1 The 2006 IECC eliminates the need for local climatic data by defining climate zones entirely by geopolitical boundaries—state and county lines. 2018 IECC; 2015 IECC; 2012 IECC; RECA Mission; Helpful Links; Responsible Energy Codes Alliance Responsible Energy Codes Alliance Responsible Energy Codes Alliance Responsible Energy Codes Alliance. 2 House leakage changes to < 5 ACH50 (an improvement from the current < 7 ACH 50), which … It first appeared in ASHRAE 90.1 in the 2004 edition. Footnote † The International Code Council is based in the US and, like the World Series, has little foothold outside our borders. I'll bet the other 49 states use the DoE climate zones. The goal is to combine a variety of energy efficient strategies to achieve a maximum net benefit. C402.1.4 Assembly U-factor, C-factor or F-factor based method o Garage Door Glazing. Climate Zones: 2B, 3B, 4B, 5B. … REScheck is applicable by county or jurisdiction. Furthermore, in May 2019, the U.S. Department of Energy published a study, "Preliminary Energy Savings Analysis: 2018 IECC Residential Requirements" which found that in Colorado's climate zones, homes built to the 2018 IECC will save approximately 2 percent in annual energy costs. Unincorporated Jefferson County is located in Climate Zone 5, as shown in IRC Table N1101.7 or IECC R301 and Table N402.1.2. Chapter 3 [CE] specifies the climate zones that establish exterior design conditions and provides general require-ments for interior design conditions, and materials, sys- tems and equipment. In order to determine what your required insulation values are, you must first determine which of the climate zones you fall in. of IECC climate zones 3 and 4 located in the “C” moisture category. MATT STRINGFELLOW: Effective January 1, 2017 as part of the State Building Code, North Dakota adopted the 2015 International Energy Conservation Code (IECC) along with state amendments for the state energy code. About Us 303-866-2100 Thus, the IECC map allows for up to 24 potential climate designations. 2015 IECC ® + 2020 GEORGIA ... Ceiling insulation increases from R-30 to R-38 in Climate Zones (CZ) 2 and CZ3 but remains R-38 (instead of R-49) in CZ4. IECC Compliance Guides RECA Mission and Members RECA Mission and Members. Total UA Alternative, REScheck™ or equivalent (page 5) General Requirements for all options: 1. The International Energy Conservation Code is increasingly the standard energy code that municipalities are adopting. There are eight of the latter climate zones that cover the entire U.S., including Hawaii and Alaska.2 Use the simplified table of IECC building envelope requirements (below) to determine the basic prescriptive requirements for the thermal envelope associated with the jurisdiction. All prescriptive information shall be taken from the various tables using Zone 5 requirements. Equivalent U-Factors Worksheet 3. Primary Sidebar In fact, moving from the 2009 to the 2015 or 2018 IECC saves an average of $4,491 on a 30-year mortgage here in Colorado, with a net-positive cash flow in under a year. Surprisingly, prior to 2004 there was no universal climate zone map for the U.S. for use with building codes. Using the climate zone map to the right, match the jurisdiction to the appropriate IECC climate zone. Windows get better (in theory) but effectively remain the same double-paned low-e windows commonly installed today (max U-factor 0.35, max SHGC 0.27). Climate Zone 6A is defined as Cold – Humid with IP Units 7200 < HDD65ºF ≤ 9000 and SI Units 4000 < HDD18ºC ≤ 5000 . After simplification, the code was shrunk to 19 pages. C402.2.7 Airspaces o Thermal Properties. The majority of localities have adopted at least the 2009 IECC. The following places are categorized as class 3C climate zones: Alameda County, California: Energy … ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. ICC Climate Zone Map. The following places are categorized as class 6A climate zones: Adams County, North Dakota: Energy Resources; Adams County, Wisconsin: … Using the climate zone map to the right, match the jurisdiction to the appropriate IECC climate zone. Dennis Heidner > Ken Girdley September 21, 2015 … IECC Climate Zone 4 The IECC assigns the counties in the state of Missouri into two climate zones. Using the climate zone map to the right, match the jurisdiction to the appropriate IECC climate zone. The Prescriptive Building Envelope submittal shall include, at the minimum, the following information on the submitted plans. 2. - Keith. COMcheck is applicable by county or jurisdiction. Zone 2 Zone 3 County Black Point Angel Island Marin County Corte Madera Belvedere Marin County Fairfax Bodega Bay Marin County Forest Knolls Bolinas Marin County Greenbrae Dillon Beach Marin County Hamilton Fort Baker Marin County Kentfield Homestead Valley Marin County Lagunitas Inverness Marin County Larkspur Marshall Marin County Lucas Valley Mill Valley Marin County … 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 Current Residential Code.