# IHWAP Diagnostics > Home weatherization tool for air leakage, ventilation, and duct system analysis. (iPhone/iPad app by Travis Jenkins.) - Source: https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493 (this page in markdown: same URL + `.md`) - Developer: [Travis Jenkins](https://appshunter.io/developer/1618558495) - Category: Productivity, Utilities - Price: Free - Rating: 5.00/5 from 5 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 75 MB - Released: 2022-09-04 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews.md ## What is IHWAP Diagnostics? Illinois Home Weatherization Assistance Program (IHWAP) Diagnostics application for the University of Illinois. This app is the product of a collaboration between the Indoor Climate Research & Training Center’s Senior Weatherization Trainer, Nate Price, and me. The Zone Pressure Diagnostics (ZPD) function will quantify the connection between the house and a zone and between that zone and the outdoors. It will also estimate the total leakage reduction potential in the zone, which should assist with prioritizing air sealing measures. The Total External Static Pressure (TESP) function will calculate total pressure and the pressure caused by the various components of a duct system and compare them to Illinois Home Weatherization Assistance Program (IHWAP) standards for recommended replacement options. The American Society of Heating and Air-Conditioning Engineers (ASHRAE) function will calculate home ventilation requirements ensuring proper pollutant control and ENERGY STAR compliance. ## Key features - Zone Pressure Diagnostics (ZPD) - Total External Static Pressure (TESP) calculation - ASHRAE ventilation requirements - Leakage reduction potential estimation - ENERGY STAR compliance checks ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews.md ### 5/5 — Good! *2024-04-03, version 2.3.3* Nate is good man! Very good! App works like lucky charms with milk! ### 5/5 — Fantastic *2022-09-27, version 2.0.1* Blower doors are a blast! ## Frequently asked questions about IHWAP Diagnostics ### What is IHWAP Diagnostics used for? IHWAP Diagnostics is used to quantify air leakage in homes, calculate ventilation requirements according to ASHRAE standards, and assess duct system pressure against IHWAP standards. It helps prioritize air sealing measures and ensures ENERGY STAR compliance. ### How does IHWAP Diagnostics help prioritize air sealing? The Zone Pressure Diagnostics (ZPD) function in IHWAP Diagnostics quantifies the connection between the house and a zone, and between that zone and the outdoors. It then estimates the total leakage reduction potential within a zone, guiding users on where to focus air sealing efforts. ### What standards does IHWAP Diagnostics compare against? IHWAP Diagnostics compares duct system pressure against Illinois Home Weatherization Assistance Program (IHWAP) standards for recommended replacement options. It also calculates home ventilation requirements to ensure proper pollutant control and ENERGY STAR compliance, referencing ASHRAE standards. ### Is IHWAP Diagnostics available on Android devices? Based on the available data, IHWAP Diagnostics is supported on iPhone and iPad devices. Information regarding Android compatibility is not provided. ### How often is IHWAP Diagnostics updated? The latest version of IHWAP Diagnostics is 3.0.4, and it was last updated on July 14, 2024. This indicates a recent update, suggesting ongoing development and maintenance. ### What is the user rating for IHWAP Diagnostics? IHWAP Diagnostics has a perfect rating of 5.0 stars based on 5 ratings. This indicates a very high level of user satisfaction among its current users. ### Does IHWAP Diagnostics have ads? No, IHWAP Diagnostics does not contain advertisements. The app's data indicates it is free and does not have ads. ### What is the age rating for IHWAP Diagnostics? IHWAP Diagnostics has an age rating of 4+. This means it is considered suitable for children aged 4 and above. ## Version history (last 5 releases) ### 3.0.4 — 2024-07-14 Rebuilt using an updated framework, squashed bugs, and added new features! Now you can select if your ZPD function blower door zone pressures are taken in reference to the inside or outside. ASHRAE function now has manual weather factor and building height inputs to allow greater flexibility for different locations. ### 2.3.3 — 2023-12-04 There is a new landing page, optional user/job info, and the ability to manually add the ASHRAE function weather factor. ### 2.2.0 — 2022-11-23 **** New Function **** The ASHRAE ventilation function has been added to calculate home ventilation requirements ensuring proper pollutant control and ENERGY STAR compliance. ### 2.1.0 — 2022-11-21 **** New Function Added **** Added the ASHRAE ventilation function. ### 2.0.1 — 2022-09-04 No release notes. ## Apps similar to IHWAP Diagnostics | App | Rating | Price | Category | | --- | --- | --- | --- | | [CE HVAC Pro+](https://appshunter.io/ios/app/ce-hvac-pro-plus/id512637219) | 4.7 (1,498) | Free | Productivity | | [Retrotec rCloud](https://appshunter.io/ios/app/retrotec-rcloud/id1083302878) | 2.5 (6) | Free | Productivity | | [Psychrometer °F](https://appshunter.io/ios/app/psychrometer-f/id650395794) | 4.6 (125) | Free | Productivity | | [measureQuick HVAC](https://appshunter.io/ios/app/measurequick-hvac/id1273187731) | 5.0 (5) | Free | Productivity | | [testo Smart](https://appshunter.io/ios/app/testo-smart/id1482139629) | 2.7 (158) | Free | Productivity | | [Open as App](https://appshunter.io/ios/app/open-as-app/id1084483622) | 4.3 (37) | Free | Productivity | ## Related topics [ihwap diagnostics](https://appshunter.io/ios/topics/ihwap-diagnostics) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*