Skip to content
HVAC Size Calc - Free HVAC Load Calculators
Home
Calculators
Blog
About
Contact
HVAC Size Calc - Free HVAC Load Calculators
About
AC Unit Size Calculator
Air Conditioner Size Calculator
Blog
BTU Calculator
Calculators
CFM Calculator
Contact
Duct Size Calculator
Free HVAC Size Calculators
Furnace Size Calculator
Heat Pump Size Calculator
HVAC Cost Calculator
HVAC Energy Cost Calculator
HVAC Load Calculator
Mini Split Size Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
SEER Savings Calculator
Ventilation Calculator
Refrigerant Charge Calculator
❄️ Refrigerant Charge Calculator
System Size (Tons)
Nominal tonnage of your AC/heat pump
Refrigerant Type
R-22 (older systems pre-2010)
R-410A (most common 2010-2022)
R-32 (newer mini-splits)
R-454B (new systems 2023+)
Line Set Length (ft)
Distance from outdoor to indoor unit
Factory Line Set Allowance (ft)
Typically 15-25 ft per manufacturer spec
❄️ Calculate Refrigerant Charge
0 lbs
Total Refrigerant Charge
⚠️
Licensed Technicians Only:
EPA Section 608 certification is required to purchase and handle refrigerants. Only licensed HVAC technicians should charge refrigerant. These calculations are estimates for planning purposes only.
❄️ Find Certified HVAC Technicians
⭐ Find HVAC Pros – Angi
📦 HVAC Tools – Amazon
🏪 Shop Lowe's
🔨 Shop Home Depot
Scroll to Top