238+ iOS apps curated and reviewed
Looking for free hvac calculator load lite apps? 17 of our 238+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | Yes | May 2026 |
| 2 |  | Free was $1.99 | 4.8★ (34) | No | Yes | Aug 2026 |
| 3 |  | Free | — | — | No | Jul 2026 |
| 4 |  | $24.99 | 2.8★ (5) | No | Yes | Jul 2026 |
| 5 |  | Free was $12.99 | 4.0★ (1) | No | Yes | Jun 2026 |
| 6 |  | $6.99 | 3.3★ (3) | No | Yes | Jul 2026 |
| 7 |  | $34.99 | 3.0★ (3) | No | Yes | Jul 2026 |
| 8 |  | Free | — | No | Yes | Aug 2026 |
This app provides professional HVAC load calculations for contractors, offering three levels of accuracy from quick estimates to detailed Manual J calculations. It's designed for field use with an intuitive interface, offline capabilities, and professional report generation.
Perform detailed heating and cooling load calculations for buildings in the field using your iPhone. Access a vast weather database and construction data to generate comprehensive reports that can be emailed or exported to spreadsheets.
This tool provides fast, accurate HVAC load calculations for residential systems. It helps professionals size furnaces, air conditioners, and gas equipment correctly, avoiding guesswork and spreadsheets for confident client recommendations and more closed bids.
This app provides quick, rule-of-thumb HVAC load calculations for various building types. It estimates heating and cooling loads, as well as air flows, based on building type, area, and occupancy. Results can be emailed with an Excel spreadsheet attachment for further analysis.
Perform detailed residential heating and cooling load calculations in the field. This app offers extensive data on building materials, weather, and project management for HVAC engineers and technicians.
This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.
This app provides essential tools for HVAC technicians and electricians, including BTU load sizing, duct calculations, and refrigerant pressure-temperature charts. It offers a free tier with core functions and an optional Pro upgrade for advanced features like voltage drop calculations and unlimited job saving.
Calculate the heating load for simple rectangular buildings with natural air infiltration. Save calculations for future reference or email them directly from the app.
This app streamlines HVAC load calculations, enabling users to quickly generate Manual J, S, and D outputs. It allows for on-the-spot pricing and uses real-world data for accurate estimates, even while on-site.
This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.
This app assists HVAC professionals with accurate load calculations for residential and commercial projects. It adheres to industry-standard ACCA Manual J 8th Edition guidelines, integrating data from DOE and NREL for precise results.
This app provides HVAC professionals with quick access to product information, tools, and support. It allows users to check pricing, availability, find locations, and manage warranty claims. Features include a PT calculator, duct calculators, and a flashlight tool for on-site work.
This app provides HVAC inspection tools and guidelines for home inspectors. It helps estimate equipment age, size, and requirements, giving inspectors confidence in their reports.
