VRF Refrigerant Charge Calc
Line length refrigerant calc
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Stop guessing trim charge: enter your liquid-line runs and get the exact extra refrigerant from g/m tables. Built for VRF and VRV installers.
The VRF and multi-split installer's commissioning calculator — combination ratio and additional refrigerant charge in one honest tool.
Enter the outdoor unit's capacity (kW or kBtu/h) and its factory charge, add your indoor units, then log every field-installed liquid-line run: length in meters, diameter from 1/4" to 3/4" (6.35–19.05 mm). The app applies the grams-per-meter table per diameter, shows the additional charge in grams and kilograms, the total charge (factory + additional), and the indoor/outdoor combination ratio with a clear verdict against the 50–130% band.
CHARGE PROFILES
• Generic R-410A g/m table built in
• Carrier-style sample profile from a published service manual
• Custom profile: type your model's own g/m values per diameter — saved on the device
PRO — REQUIRES SEPARATE PURCHASE
• Multi-split / VRF: two or more indoor units (free covers a single split)
• Brand sample and custom charge profiles
• Piping limit checks: total length, farthest equivalent length, outdoor–indoor and indoor–indoor height differences
• Save calculations to history
• Share clean PDF reports
Free forever: single-split additional charge with the generic R-410A profile and plain-text sharing.
Built for gloves and sunlight: big keypad, huge results, Outdoor Bright mode.
Everything stays on your phone — fully offline, no account, no tracking.
Results are planning estimates; always verify with the manufacturer's installation manual.
Note: features listed under PRO require a separate purchase — an auto-renewable subscription (monthly or yearly) or a one-time Lifetime unlock.
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Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://hdappstudio.com/vrfcharge/privacy/
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The developer, HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI
- Size
- 10.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 10 more
- English, Arabic, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- VRF Charge Pro — Lifetime $29.99
- VRF Charge Pro — Monthly $2.99
- VRF Charge Pro — Yearly $14.99
- Copyright
- © 2026 Ercan Onur Ensert