Ashrae 90.1 duct insulation requirements
- #Ashrae 90.1 duct insulation requirements update#
- #Ashrae 90.1 duct insulation requirements code#
- #Ashrae 90.1 duct insulation requirements plus#
Once a change passes in the committee, it is released for public review. Changes to ASHRAE standards can be proposed by committee members, subcommittee members, or members of working groups, or can be suggested by anyone through the continuous maintenance proposal (CMP) process. But while the 2013 edition does not result in as large a drop in energy use as was seen three years ago, the changes in this latest version still are significant.ĪNSI/ASHRAE/IES Standard 90.1 is a continuous maintenance standard, which means that the committee meets frequently (usually four times per year in person) to develop and vote on changes (addenda).
#Ashrae 90.1 duct insulation requirements code#
The 2003 MUEC is based on the 2003 International Residential Code (IRC) with references to the 2004 IECC supplement.The changes in ASHRAE Standard 90.1-2013 are not as radical as the changes made in 2010, which reduced the energy consumption of minimally compliant designs by approximately 30% compared to 90.1-2004. Therefore, every unit of government enforcing the single state construction code must apply the 2003 Michigan Uniform Energy Code to newly issued permits. On October 24, 2008, the judge presiding over the litigation dismissed the MAHB complaint and dissolved the lawsuit, making the rules effective immediately. The new code has since been pending litigation for the last three and a half years. After review and promulgation of the code, the Ingham County Circuit Court issued an injunction to halt the February 28, 2005, effective date of the rules in response to a lawsuit by the Michigan Association of Home Builders (MAHB).
#Ashrae 90.1 duct insulation requirements update#
In 2002, the Department of Labor & Economic Growth (DLEG) established a committee to review and update Michigan's Uniform Energy Code. The Michigan Uniform Energy Code Part 10 Rules were adopted March 31, 1999. A 10-member ad hoc committee was established to assist with these efforts. The legislation directed the state construction code commission to, by April 1, 1997, provided cost-effective standards and establish a program to provide home buyers with energy rating information. SB 719, signed in early January 1996, repealed the 1995 adoption of the 1993 MEC. On July 27, 1985, the state adopted ANSI/ASHRAE/IES Standard 90A-1980 statewide. As of that date, the state adopted ASHRAE/IES Standard 90-1975 statewide. Prior to June 22, 1977, the state of Michigan had no building energy efficiency requirements. Mass Walls: u-factors unchanged except an added footnote for when more than half the insulation is on the interior the mass wall u-factors shall be a maximum of 0.065 in zone 5 and 0.057 in zones 6 and 7, respectively.ĭuct Insulation - R-6 in the building envelope, R-8 outside the building (model: R-8 or R-6 depending on diameter).Basement walls: climate zone 5 – 0.059 instead of 0.050.Wood-framed walls: climate zone 5 – 0.057 instead of 0.060 and climate zones 6 and 7 – 0.057 instead of 0.045.
#Ashrae 90.1 duct insulation requirements plus#
Testing shall be conducted with a blower door at a pressure of 0.2” w.g. The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 4 air changes per hour. Administrative and other minor amendments can be found in Part 10, Michigan Energy Code and Part 5, Residential Code of the Construction Code.Īmendments include but are not limited to: