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Potentially, ASHRAE could participate in and share in the data and information from multiple additional research projects through this new funding path for less than the average cost of one ASHRAE research project (Currently, $171k). To date, the following four projects have been initiated under this new funding path: Grants-in-Aid.
- air leakage - mechanical - ductsThe data used in Standard 90.1 is published in ASHRAE Standard 169 (ASHRAE, 2013), which is based on a research project completed in 2009 (Thevenard, 2009). This newer database is different than the one used by the IECC. For example, Athens County in Ohio is in Climate Zone 5A according to the IECC but is in Climate Zone 4A, according to ASHRAE. May 11, 2017 Ashrae Weather Data Viewer Free. BAS Expert shares his 1. The good news is that with a few actions you can reduce the risk of your building automation system.
- Residential -Both the 2009 and 2012 IECC require duct tightness to be verified. Verification can take place via either a post-construction test or a rough-in test.For the post-construction test, leakage measurement must be made across the entire system,...
Topics - building envelope - basement - wallsAshrae Design Weather Data
- ResidentialAfter selecting a basement wall type, a basement wall illustration will appear with input boxes for the basement wall height, depth below grade, and depth of insulation. The illustration helps identify the dimensions being requested. You may enter...
Topics - building envelope - windows - windows - fenestration - Commercial - Fenestration is considered anything that transmits light, however, COMcheck cannot calculate fenestration without having a wall associated with it. In this case the wall is entirely fenestration therefore, the square footage would be the same for...
Topics - building envelope - walls
- ResidentialWalls that do not fit into any of the preset categories in REScheck (preset categories come directly from the applicable code currently selected in the Code menu) may be entered under the 'Other' wall type. When 'Other' is chosen as the wall type,...
Topics - lighting - ResidentialThe 2009 IECC requires that a minimum of 50% of the lamps in permanently installed lighting fixtures be high-efficacy lamps (2009 IECC, Section 404.1). The 2012 IECC has increased the minimum percentage from 50% to 75%, along with an exception for...
Topics - Commercial - Residential - Code adoption takes place at the state, and in some cases municipal, level. To determine the code in a particular state, visit the Status of State Energy Code Adoption page.
Topics - addition - alteration - building envelope - ResidentialREScheck determines compliance for additions in the same manner as new construction. When entering an addition, only the new portions of the building need to be shown in the software. REScheck will perform trade-offs between envelope assemblies when...
Topics - Commercial - Residential - The IECC addresses mixed occupancies by stating that commercial occupancies must comply with the commercial portion of the code and...
Topics - building envelope - Commercial - If multiple users are putting information into COMcheck, each may fill out the appropriate section independently. However, all sections of the building must show compliance to the same code or standard (e.g., cannot show envelope compliance to IECC...
Topics - lighting - lighting - exterior - lighting - interior - CommercialExemptions and allowances for lighting are an option that must be activated in COMcheck. To activate the exemptions and allowances, take the following steps:Select either the Interior Lighting or Exterior Lighting TabGo to the Options menu and...
Topics - addition - alteration - CommercialCOMcheck determines compliance for additions in the same manner as new construction. When entering an addition, only the new portions of the building need to be shown in the software. COMcheck will perform trade-offs between envelope assemblies when...
Topics - A commercial building is defined as all other buildings that are not considered a residential building.
Topics - building envelope - CommercialCOMcheck computes an envelope index that is a reflection of the difference between a 'design' building energy performance factor (EPF) and a 'code' or budget building EPF. The total building load (made up of cooling, heating, lighting, and...
Topics - windows - CommercialWhen entering your fenestration in COMcheck the pop up window has three options to enter your fenestration. Choose the second option called Product Performance in accordance with NFRC. If you do not have a pending product number, enter NA and...
Topics - The COMcheck trade-off alternative used for enforcing the IECC is permitted under a clause in Section 101 (referencing 2012 IECC). That clause is a fairly common code element that gives the jurisdiction and, more explicitly, the building official...
Topics - When using the ASHRAE 90.1-2013 energy code, COMcheck needs to have two EnergyPlus weather files in this folder C:ProgramDataCOMcheckeplusweather. The most common reasons for a compliance simulation failure are: the files are not located at...
Topics - building envelope - Commercial - The Scope and Application sections of the 2009 IECC address use of ASHRAE 90.1 (2007) as an alternative. See below for the text. It is appropriate to use ASHRAE 90.1 as an alternative when your building exceeds 40% glazing, although it does not...
Topics - building envelope - walls - windows - fenestration - windows - glazing - Commercial - COMcheck implements the calculation based on the definition of above and below-grade walls in the applicable code. The calculation for percentage of glazing in ASHRAE Standard 90.1 and the IECC are different as the IECC only looks at above grade...
Ashrae Weather Data California
Topics - Commercial -ASHRAE’s space conditioning types include: conditioned space, unconditioned or semi-heated space. ASHRAE’s definitions for these types:space: an enclosed space within a building. The classifications of spaces are as follows for the purpose of...
Topics - Commercial - Warehouses must be considered carefully. The first consideration is whether it is going to be conditioned, cooled and/or heated, or semi heated. Next is the applicable energy code. Older codes did not require the building envelope to meet the energy...
Topics - Commercial - In the 2015 IECC, Section C402.1.1 Low-energy buildings – low energy buildings or portions separated from the remainder of the building by a building thermal envelope complying with the code, can be exempt from the building thermal envelope...
Topics - Commercial - Residential - Note: The key point is not the age of the building, but whether it is registered or eligible to be registered and listed. In the following cases, historic buildings are considered exempt from provisions of the energy code (however, we recommend...
Topics - To share a particular project with others on COMcheck-Web or REScheck-Web, you have a couple options:One is to share the log in credentials with them and save all edits to the project under that account. If you are concerned about others having...
Topics - air leakage - CommercialYes, in Section 402.4 of the 2012 IECC, testing is now required instead of an option between testing or visual inspection such as in the 2009 IECC. Also, the air leakage rates changed.Air Leakage Rates2009 IECC2012 IECCClimate zones 1-2<...
Topics - In COMcheck 4.0.0.3 and newer, you can now break up your VRF into two systems. One can be defined as the VRF Outdoor/Central unit and is selected as heating equipment→heat pump list-→'VRF xxxx'. This type of system will enforce the system...
Topics - Residential - The term “residential building” includes:detached one-or-two family dwellings having not more than three stories above grade plane;buildings that consist of three or more attached townhouse units and have not more than three stories above grade...
Topics - walls
- ResidentialREScheck uses nominal insulation R-values. The program does not calculate for compression. For example, if R-19 is entered as the cavity insulation R-value, it assumes the full R-19 in REScheck. Walls with insulation R-values equal to or less than R...
Topics - building envelope - CommercialLouvers are best treated as un-insulated portions of the wall. You can add them as a separate wall type (for example, if they are metal, metal building would probably be most appropriate) with no insulation but a wall area. COMcheck will do the area...
Topics - Choose a city that is the closest with the most similar weather. Check with the building official where the project is located to confirm the city selected will be acceptable or if choosing “county” as the designation would be more appropriate. ...
Topics - COMcheck does account for thermal bridging of framing members, furring, etc. (depending upon the assembly). U-factor assembly calculations are taken from ASHRAE Appendix A and ASHRAE Fundamentals. The methodology used to calculate compliance is...
Topics - There are a couple things to note about the current import process implementation:Currently we only focus on importing envelope components. This means you will still be required to manually specify your space types, lighting fixtures, and...
Topics - There are a couple of things to try:Completely remove REScheck or COMcheckUse the Windows operating system “Programs and Features” uninstallerOpen Windows Explorer and navigate to C:Users<your username>AppDataRoaming<REScheck or...
Topics - basement - walls - The problem most likely relates to the basement walls you have specified. The DOE-2 simulation program used in REScheck for performance alternative calculations sometimes generates this error even though the entries appear valid. As a workaround,...
Topics - building envelope - doors - “Standard 90.1 requires that U-factors (and air leakage) for doors be determined in accordance with the NFRC rating procedures. All NFRC ratings are based on the whole product, including the frame.”Consequently, for compliance with Standard 90.1...
Topics - Electric central furnace does not qualify for the High Performance HVAC efficiency package. ALL systems in a project must meet the criteria of C406.2 and if your system(s) cannot be found in C406.2 then by default it does not qualify. In these cases...
Topics - Unfortunately, there is not a way to merge files. The web tool is definitely the way to go when you have multiple contractors involved as you can create a generic log in and each contractor can work on the same project file to enter their...
Topics - Commercial - The commercial energy code requires that a registered professional submit compliance documentation (construction documents and compliance verification). In the IECC, Section C103.1 Construction Documents, General, the wording states that...
Topics - lighting - Yes.Locate the lighting fixture library in this location defaulted by COMcheck: C:Users<your user name>AppDataRoamingCOMcheckfixtureLibrary.xml.Copy fixtureLibrary.xml from this location to the same directory on the other computer.
Topics - Commercial - Federal - Manufactured Housing - Multi-Family - Municipal - ResidentialCopies of the International Energy Conservation Code (IECC) can be purchased from the International Code Council website.Copies of ASHRAE standards can be purchased from the ...
Topics - insulation - walls - Residential - REScheck uses nominal insulation R-values. The program does not calculate for compression. For example, if R-19 is entered as the cavity insulation R-value, it assumes the full R-19 in REScheck. Walls with insulation R-values equal to or less than R...
Topics - insulation - walls - Residential - Exterior walls in REScheck are defined by the assembly type, gross wall area, cavity/continuous R‑value (U-factor for Other walls) and orientation. All exterior walls are assumed to be of regular rectangular shape with an average wall height of 9...
Climate Data Download Center
Ashrae Weather Data By City
There are many different weather data formats available. EQUA currently offers a selection of climate files for IDA ICE, using the formats described below.
To download weather files, use the menu to the left.
Test Reference Year (TRY)
The TRY weather data are composed from measured data of representative months to form a whole representative year.
ASHRAE IWEC
The ASHRAE IWEC 1.1 database contains 'typical' weather files for 227 locations outside the USA and Canada. The International Weather for Energy Calculation (IWEC) files are derived from up to 18 years of DATSAV3 hourly weather data originally archived at the National Climatic Data Center.
Ashrae Weather Conditions
ASHRAE IWEC 2
The ASHRAE IWEC 2 database contains 'typical' weather files for 3012 locations outside the United States and Canada. The files are derived from Integrated Surface Hourly (ISH) weather data originally archived at the National Climatic Data Center.
EnergyPlus Weather Data
Weather data for more than 2100 locations are now available in EnergyPlus weather format — 1042 locations in the USA, 71 locations in Canada, and more than 1000 locations in 100 other countries throughout the world. The weather data are arranged by World Meteorological Organization region and Country.