lcmd vs VRF Refrigerant Charge Calc

Smart Construction Site Management via Tickets Task Management via Voice, Photo, or Text Quickly capture tasks, damages, or notes during your site inspection – simply by using voice input, photos, or text, and store them centrally in one place. Automated AI Optimization for Tickets Our AI fills in missing details and refines incomplete entries automatically, ensuring you receive a high-quality, well-structured ticket with minimal effort. Add Attachments & Documents Upload images, PDFs, or other documents directly to the ticket, giving all stakeholders instant access to relevant information without lengthy searches. For account registration please visit: https://www.lcmd.io/

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. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hdappstudio.com/vrfcharge/privacy/