The ASHRAE Duct Fitting Database (DFDB) for the iPhone and iPad is now compatible with iOS 16 and iPhone 14 Pro. The ASHRAE DFDB app allows you to perform pressure loss calculations for all 250+ ASHRAE duct fittings in both IP and SI units. Features include dynamic illustrations of each design, and the ability to share reports and spreadsheets through email. This app is based upon the popular ASHRAE Duct Fitting Database desktop and web applications. The advantages of this mobile app are that you can easily use it out in the field to do quick duct pressure loss calculations, the inputs can be adjusted by touch, and installation is automatic. The following is a partial list of features: 1. You can create individual projects, each with unique input values and results. 2. Each fitting has its own custom set of input parameters and results. 3. You can easily change the minimum and maximum allowable values for all input parameters. 4. It includes a useful search feature that allows you to type in a partial or full fitting code name to quickly retrieve it. 5. It allows you to display and email two types of reports. The app reports also include a spreadsheet attachment that you can open on your desktop computer to do further analysis. 6. The app displays inputs and results in both IP and SI units. 7. Works on both the iPhone and iPad and adjusts its user interface according to the proper size screen. The ASHRAE Duct Fitting Database application was designed by Carmel Software Corporation exclusively for ASHRAE.
Generally ok
A few issues: Sliders for sizes should default to integer steps. Sliders for CFM should default to 100 cfm steps above 2000 and 25 below. SD7-3 returns 0 pressure drop regardless of inputs. Oops.
United StatesCrashes when trying to send a report
The app used to work well. Today, when trying to send a report, the app crashes every time.
United StatesWaste
Not worth the cost.
United StatesGood but not great
The duct database program is a nice start to what could be an incredibly powerful tool. Compared to the full cost of getting the fitting database on a CD from ASHRAE, this is a steal! There are some occasional crash issues. I'm guessing there needs to be some additional error catching for when you are modifying parameters that may be out of bounds. There are three problems I have with this program at this point that need to be addressed before I can give the program a full 5 stars. I can see this app being useful in a field setting when analyzing existing conditions. Coming from an engineering and design standpoint, however, there are several improvements that need to be made. First, it is a little difficult to navigate through the different fittings. The search feature is nice. What would be great is if you could browse through the different fittings and when tapping on a fitting you can see the diagram of the fitting. As it is, it is difficult to tell what the fitting is exactly. Second, as it is, all fittings are present in each project. This should be changed so that you pick a fitting and insert it into your project. This way it is easy to navigate through the fittings you have modified for the particular project you are working on. The app should also allow multiple instances of each fitting in each project. That way you can check multiple instances of fittings when doing design work. Third, adjusting values utilizing the sliders (on the iPad at least) is incredibly sensitive. I have to touch the sliders perfectly to make them work. Otherwise the screen wants to slide over to the diagram panel. Some other thoughts and suggestions: - Provide for setting project level airflow and duct dimensions. Each fitting added to the project would then default to these settings and then can be altered as needed. - Show a project summary table listing fittings with velocities, Pv, Co, and pressure loss values. - Add straight ductwork calculation (easy enough, equations are all in the handbook) - Add a button to swap the height and width values.
United StatesEngineer
This expensive app is a great idea that was executed horribly. The program crashes often on certain fittings - so much so that I don't use it anymore.
United StatesUseful app with lots of data
This is a very useful app with lots of coefficient data for almost all of the ASHRAE fittings (230+). I noticed that a couple are missing, but I did talk w/Carmel and they are releasing an update in January 2012 that will include all the remaining fittings, including the ED5's and more. I love that I can email the fitting data with picture. Very handy. Look forward to the newest update soon.
United StatesNeed to add fittings
This app would be worth the money if they would follow-through and add more fittings.
United States
SR7-2,SR7-3, SR7-14, SR7-15, SR7-16, SR7-17. Added new parameters and updated the calcs2. If you are updating an previous version of the DFDB app, make sure to close the app then re-open it after downloading the update so it refreshes the list of projects.
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