Refrigerant Pipe Calculator

Select refrigerant pipe size from refrigerant type and system capacity — free HVAC design tool

Related Categories:Building Services

Input Conditions

Refrigerant Type

Cooling Capacity (kW)

Pipe Length (m)

Elevation Difference (m)

Pipe Sizes

Liquid Line

6.35 mm

1/4"

Gas (Suction) Line

15.88 mm

5/8"

Pipe Length Check

Actual Length	15 m
Equivalent Length (x1.3)	19.5 m
Max Allowed Length	75 m OK
Elevation	3 m
Max Allowed Elevation	30 m OK
Capacity Loss	7.5 % (5.2 kW)

Refrigerant Pipe Sizing Table

Capacity	Liquid	Gas
2.8 kW	6.35 mm (1/4")	12.7 mm (1/2")
5.6 kW	6.35 mm (1/4")	15.88 mm (5/8")
11.2 kW	9.52 mm (3/8")	19.05 mm (3/4")
16 kW	9.52 mm (3/8")	22.22 mm (7/8")
22.4 kW	12.7 mm (1/2")	25.4 mm (1")
45 kW	12.7 mm (1/2")	28.58 mm (1-1/8")
56 kW	15.88 mm (5/8")	31.75 mm (1-1/4")