# HVAC Manual Boss — ACCA Manual J/S/D Calculator > HVAC load calculation and estimation tool for professionals. (iPhone/iPad app by John Kelley.) - Source: https://appshunter.io/ios/app/hvac-manual-boss/id6761338720 (this page in markdown: same URL + `.md`) - Developer: [John Kelley](https://appshunter.io/developer/1873680474) - Category: Business - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 37 MB - Languages: American English - Released: 2026-04-24 - Data updated: 2026-08-27 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/hvac-manual-boss/id6761338720/reviews.md ## What is HVAC Manual Boss? • Build Manual J load calculations quickly and accurately • Generate Manual D and S outputs without the headache • Create good, better, best pricing on the spot • Use real-world data to stay consistent with your numbers • Access major equipment brands and configurations • Produce estimates while you’re still in the home Subscription automatically renews unless canceled at least 24 hours before the end of the trial period. Payment will be charged to your Apple ID account. Manage or cancel anytime in Settings. https://hvacmanualboss.com/terms ## Key features - Manual J load calculations - Manual D and S outputs - On-the-spot pricing - Real-world data integration - Major equipment brand access - On-site estimate generation ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Hvac Manual Boss | $9.99 | per month | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/hvac-manual-boss/id6761338720/reviews.md ### 5/5 — Great app *2026-08-09* Save you time and money and it’s acca compliant. ### 5/5 — Great App *2026-07-06* I really like the fact it very affordable and my building department accepted it base on the fact its acca compliant!!! And its affordabe ## Frequently asked questions about HVAC Manual Boss ### What is HVAC Manual Boss? HVAC Manual Boss is a business application designed to help HVAC professionals perform load calculations (Manual J, S, D) and generate estimates quickly and accurately, even while on-site. ### What HVAC calculations can HVAC Manual Boss perform? HVAC Manual Boss allows users to build Manual J load calculations quickly and accurately, and generate Manual D and S outputs without difficulty. ### Can I create pricing with HVAC Manual Boss? Yes, HVAC Manual Boss enables you to create good, better, best pricing on the spot, helping you present options to clients. ### Does HVAC Manual Boss use real-world data? Yes, the app uses real-world data to help you stay consistent with your numbers and provides access to major equipment brands and configurations. ### What devices does HVAC Manual Boss support? HVAC Manual Boss is supported on iPhone and iPod devices. ### How much does HVAC Manual Boss cost? HVAC Manual Boss offers a subscription plan at $9.99 per month. The app is free to download, with the subscription providing full access to its features. ### How do I manage or cancel my HVAC Manual Boss subscription? You can manage or cancel your subscription anytime by going to your device's Settings. The subscription automatically renews unless canceled at least 24 hours before the end of the trial period. ### Is HVAC Manual Boss suitable for beginners? While the app is designed for professionals, its user-friendly interface and ability to generate accurate calculations quickly can be beneficial for those learning the trade. ## Version history (last 5 releases) ### 1.2.2 — 2026-08-24 Add company information from the home screen Track installed heating equipment and capacities Improved permit reports and multi-system documentation More reliable project saving and deletion Fixed report pages appearing blank on larger jobs ### 1.1.9 — 2026-08-18 A cleaner start and smarter climate data. • New home screen: one "Start new job" button asks how you want to work — scan the plans, walk the house, enter your numbers, or get a quick ballpark — and takes you straight there. • New Tools screen: the chiller sizer, quick estimate, duct designer, register sizing, and methodology guide now live in one place. • Smarter climate data: reports now show exactly where your outdoor design temperatures came from, and flag anything an inspector might question — no more silent guesses. • Clearer permit reports: design condition sources and climate notices now print right on the report. • Bug fixes and performance improvements. ### 1.1.8 — 2026-08-14 Big accuracy and speed update: • Exterior wall entry — tell the app which walls face outside and their lengths. Corner rooms now carry the right load instead of an estimate. • Duct settings — set duct insulation and leakage (sealed/typical/leaky) and see duct gains and losses as their own line on results and reports. • Ventilation options — None, Exhaust, HRV, or ERV, with heat-recovery credit applied. • Plan scan summary — after scanning prints, see exactly what was found (rooms, windows, doors, square footage) before it's applied. No more silent misses. • Duplicate Room — copy a finished room in one tap and just change what's different. • Smart defaults — picking a room name pre-fills sensible values you can override. • Better voice entry — speaks over jobsite noise better, and tells you clearly when it can't hear instead of guessing. • Clearer Calculate button — if it's disabled, it now tells you exactly what's missing. • Plus fixes: room floor picker follows your story count, cleaner labels, no more mid-word text wrapping. ### 1.1.7 — 2026-07-13 Scan the prints and go — this update makes the plans do the work. • DUCT RUNS READ FROM YOUR PLANS — The scanner now locates the furnace or air handler on the prints and measures each room's supply run from the actual layout. Real lengths for every room, not one flat number. • 2-SYSTEM JOBS SET THEMSELVES UP — Say two systems, one up and one down, and the app splits the rooms by floor automatically. Downstairs on System 1, upstairs on System 2. No more assigning rooms one at a time. • FLOOR DETECTION FROM THE PLANS — Scans now read which story every room is on straight from the floor plan sheets, so upstairs rooms get the right boundaries, loads, and duct lengths without you touching anything. • SMARTER DUCT ESTIMATES — Rooms you enter by hand get run lengths sized to the home and floor instead of a generic default. • Plus bug fixes and performance improvements. Download the prints, scan them, and calculate — you shouldn't have to add anything. ### 1.1.6 — 2026-07-08 What's new: When the paywall can't load the subscription, instead of just the generic "Unable to load subscription" message, it now shows a small gray line underneath with the exact underlying error — the actual error code and message coming back from Apple/RevenueCat (for example, "Store returned no product for com.hvacmanualboss.monthly" or a specific StoreKit error code). Why: You've confirmed everything looks right on the store side — the product is Approved under HVAC Manual Boss, the US is included, and I already fixed the RevenueCat configuration issue. But your phone still isn't getting the product back from Apple, and the current build hides the reason. Build 88 will tell us exactly what's failing, so we stop guessing. ## More apps by John Kelley - [Kelley Hvac Pro](https://appshunter.io/ios/app/kelley-hvac-pro/id6759071311) - [Zipquote](https://appshunter.io/ios/app/zipquote/id6761561850) - [BillBoss Pro](https://appshunter.io/ios/app/billboss-pro/id6765986966) - [Zipquote Connect](https://appshunter.io/ios/app/zipquote-connect/id6785333347) All apps by John Kelley: https://appshunter.io/developer/1873680474 ## Related topics [hvac manual j](https://appshunter.io/ios/topics/hvac-manual-j) · [hvac load calculator manual j](https://appshunter.io/ios/topics/hvac-load-calculator-manual-j) · [manual j](https://appshunter.io/ios/topics/manual-j) · [hvac load calculator](https://appshunter.io/ios/topics/hvac-load-calculator) --- *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 2026-08-27.*