F-Gas Calculators
Free online calculators for refrigeration and HVAC technicians. Perform F-Gas compliance calculations, system diagnostics, and charge sizing quickly and accurately.
CO2 Equivalent & Compliance
Calculate tonnes CO2 equivalent from refrigerant charge, determine leak check frequency, and check GWP ban thresholds under EU F-Gas Regulation 517/2014.
Leak Rate & Detection
Calculate annual refrigerant leak rates, determine if systems exceed acceptable thresholds, and log refrigerant top-up quantities.
Superheat & Subcooling
Calculate superheat and subcooling from gauge readings and temperature measurements, with built-in PT data for common refrigerants.
System Performance
Calculate coefficient of performance (COP), energy efficiency ratio (EER), and total equivalent warming impact (TEWI) for refrigeration and heat pump systems.
Charge Limits & Recovery
Calculate maximum refrigerant charge limits for A2L and A3 refrigerants per EN 378, and safe fill levels for recovery cylinders.
Built for F-Gas Professionals
Our calculators are designed to help refrigeration and HVAC technicians, engineers, and contractors perform F-Gas compliance and system performance calculations quickly and accurately. All calculations reference the applicable EU regulations, British Standards, and City & Guilds 2079 skill groups.
Regulation Compliant
Based on EU 517/2014, EN 378, and UK F-Gas requirements with references shown
Instant Results
Get answers immediately — no sign-up or download required
Mobile Friendly
Use on any device — perfect for field calculations on site