# Refrigerant Charge HVAC — Line Set Charge 10 Refrig > Line Set Charge 10 Refrig (iPhone/iPad app by Rizvan Adzhoian.) - Source: https://appshunter.io/ios/app/refrigerant-charge-hvac/id6764646716 (this page in markdown: same URL + `.md`) - Developer: [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) - Category: Utilities, Business - Price: $0.99 with in-app purchases - Age rating: 17+ - Requires: iOS 13.0 · 34 MB - Languages: English - Released: 2026-05-04 - Data updated: 2026-06-25 - User reviews in markdown: https://appshunter.io/ios/app/refrigerant-charge-hvac/id6764646716/reviews.md ## What is Refrigerant Charge HVAC? Refrigerant Charge Calculator is built by HVAC technicians for HVAC technicians to calculate additional refrigerant charge requirements. Calculate additional refrigerant charge requirements for copper line sets based on liquid and suction line length and diameter - supporting 10 refrigerants including R-410A, R-454B (next-gen replacement), R-32 mini-splits, and EPA 608 refrigeration blends. FEATURES: Calculate Additional Refrigerant Charge - For copper line sets of any length 10 Refrigerants Supported - R-410A, R-22, R-454B, R-32, R-407C, R-134a, R-404A, R-507A, R-290, R-717 Liquid Line Diameters - 9 sizes from 1/4" to 1-1/8", including 5/16" mini-split Suction Line Diameters - 3/8" to 2-5/8" standard copper sizes Results in Multiple Units - Ounces (oz), pounds (lbs), and grams (g) Industry-Standard Data - aligned with OEM long-line guides (Goodman, Carrier) Warnings for Long Line Sets - Alerts when unusual refrigerant quantities are needed 100% OFFLINE OPERATION: Works without internet connection. All refrigerant charge data built into the app - no server calls, no delays, no data leakage. Perfect for job sites without cellular coverage. HOW IT WORKS: 1. Select your refrigerant type (R-410A, R-454B, R-32, etc.) 2. Enter liquid line length (feet) and diameter (inches) 3. Enter suction line length (feet) and diameter (inches) 4. Get instant charge calculation in oz, lbs, and grams WHY YOU NEED THIS CALCULATOR: When installing split systems, mini-splits, or equipment with long line sets, the factory charge only covers standard line length (typically 25 ft). Every extra foot of copper tubing requires additional refrigerant. This calculator provides exact amount based on industry charge-per-foot tables - preventing system undercharge that destroys compressors. SUPPORTED REFRIGERANTS: R-410A - Residential AC & heat pumps (most common 2026) R-22 - Legacy systems still in service (phaseout complete 2030) R-454B - Next-generation R-410A replacement (EPA mandate 2025+) R-32 - Mini-split & VRF systems (lowest GWP option) R-407C - Commercial AC applications R-134a - Auto AC & water chiller systems R-404A - Commercial refrigeration freezers R-507A - Low-temperature refrigeration systems R-290 - Propane systems (hydrocarbon alternative) R-717 - Ammonia industrial refrigeration OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: • Unlimited saved calculation history • PDF export of results • Dark theme • Ad-free experience ACCURACY STANDARDS: Charge-per-foot values computed from NIST REFPROP-grade refrigerant densities (liquid line at 70°F, suction vapor at 40°F saturation) and aligned with manufacturer long-line guides (Goodman, Carrier). Covers both liquid and suction line contributions. Always follow your unit's installation manual when it specifies a different per-foot value. PERFECT FOR: HVAC technicians installing split systems and heat pumps Mini-split installers designing ductless systems Refrigeration mechanics sizing refrigerant lines AC contractors bidding and executing long line set jobs HVAC students and apprentices learning charge calculations Building maintenance engineers commissioning new equipment Equipment commissioning specialists verifying correct charges Service technicians replacing line sets on existing systems Accurate refrigerant charge calculations prevent undercharge, overcharge, and system failure on every installation and service call. Part of HVACTools Suite - professional HVAC technician and refrigeration calculator app collection for field diagnostics and system commissioning. ## Pricing and in-app purchases Base price: $0.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Pro Unlock | $2.99 | one-time | ## Version history (last 3 releases) ### 1.0.5 — 2026-06-11 Accuracy update: charge-per-foot tables rebuilt from NIST REFPROP-grade refrigerant densities, aligned with OEM long-line guides (Goodman TP-107, Carrier LLG-R454B). Added 5/16" liquid line (mini-split) and 3/8" suction line sizes. All 10 refrigerants, liquid and suction lines. ### 1.0.4 — 2026-05-18 What's new: - Updated metadata for clarity per App Store guidelines - Optional Pro upgrade is a separate one-time in-app purchase (not required for calculator features) ### 1.0.3 — 2026-05-04 No release notes. ## More apps by Rizvan Adzhoian - [Conduit Fill Calculator-NEC](https://appshunter.io/ios/app/conduit-fill-calculator-nec/id6761846849) - [Electrical Load Calc NEC](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945) - [Transformer Calc NEC](https://appshunter.io/ios/app/transformer-calc-nec/id6763311943) - [Voltage Drop Calc NEC](https://appshunter.io/ios/app/voltage-drop-calc-nec/id6763312448) - [Grounding Size Calc NEC](https://appshunter.io/ios/app/grounding-size-calc-nec/id6763312724) - [Breaker Size Calc NEC](https://appshunter.io/ios/app/breaker-size-calc-nec/id6763312865) All apps by Rizvan Adzhoian: https://appshunter.io/developer/1891746079 --- *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 2026-06-25.*