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Airex (58)
Bluefin (21)
C&D Valve (1)
DiversiTech (136)
Duro-Line (15)
Easybend (12)
Fortress (146)
Hilmor Tools (7)
ICOOL (33)
Isoclima (27)

Suction Line

1/4" (20)
3/8" (58)
1/2" (54)
5/8" (73)
3/4" (46)
7/8" (40)
1-1/8" (4)

Features

Insulated (254)
Non-Insulated (12)

Liquid Line

1/4" (97)
3/8" (116)
1/2" (16)
5/8" (15)
3/4" (16)
7/8" (12)

Length (Feet)

1.7' (1)
15' (16)
6' (13)
12' (4)
13' (8)
16' (3)
164' (11)
2.6' (1)
20' (2)
25' (39)

Insulation Thickness

1/2" (171)
3/8" (39)
3/4" (58)
1" (42)

Review Score

(136)
(57)
(14)
(7)
(7)

Price Range

Under $1 (2)
$1 to $5 (7)
$5 to $10 (30)
$10 to $15 (57)
$15 to $20 (57)
$20 to $25 (52)
$25 to $30 (53)
$30 to $35 (49)
$35 to $40 (41)
$40 to $45 (35)

Line Sets

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Product Image of Multidrain Position Rough-In Box
Multidrain Position Rough-In Box
SKU: RBX3-MD-NC
RoughinBox
SKU: RBX3-MD-NC
Brand: RoughinBox
(14)
$49.26 each
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Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
$231.31 each
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Product Image of 4" SpeediChannel Wall Penetration Cover (Natural)
$23.64 each
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Product Image of 3.75" x 6.5' Slimduct Duct Line Set Cover (White)
$80.36 each
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Product Image of Rx11-flush Liquid, 19.5 oz.
Rx11-flush Liquid, 19.5 oz.
SKU: 4300-30
Nu-Calgon
SKU: 4300-30
Brand: Nu-Calgon
(4)
$69.59 each
In Stock
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Product Image of 4" x 6.5 Ft. SpeediChannel Line Set Cover (Natural)
4" x 6.5 Ft. SpeediChannel Line Set Cover (Natural)
SKU: 230-D4A
DiversiTech
SKU: 230-D4A
Brand: DiversiTech
(15)
$45.99 each
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Product Image of 3.75" Slimduct Wall Inlet (White)
$42.27 each
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$422.70 box of 10
$42.27 each
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Product Image of 3" x 6.5 Ft. Line Set Cover (Natural)
3" x 6.5 Ft. Line Set Cover (Natural)
SKU: LSC300
Bluefin
SKU: LSC300
Brand: Bluefin
(3)
$30.60 each
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Product Image of 2.75" x 6.5' Slimduct Duct Line Set Cover - SD-77-W (White)
$57.11 each
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Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 3/8" Insulation (50 Ft.)
$217.13 each
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Product Image of 3" Wall Penetration Cover (Natural)
3" Wall Penetration Cover (Natural)
SKU: LSWC300
Bluefin
SKU: LSWC300
Brand: Bluefin
(3)
$8.69 each
In Stock
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Product Image of 4" x 6.5 Ft. Line Set Cover (Natural)
4" x 6.5 Ft. Line Set Cover (Natural)
SKU: LSC400
Bluefin
SKU: LSC400
Brand: Bluefin
(2)
$37.87 each
In Stock
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Product Image of TITAN OUTLET Gray Line Set Gasket/Seal System for 3/4", 7/8" and 1-1/8" Tubing w/ 1" Wall Insulation
$85.49 each
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Product Image of Line Set Tape - White (2" x 180')
$13.99 each
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Product Image of 2.75" Slimduct Wall Inlet - SW-77-W (White)
2.75" Slimduct Wall Inlet - SW-77-W (White)
SKU: 86016-RECTORSEAL
Rectorseal
SKU: 86016-RECTORSEAL
Brand: Rectorseal
(1)
$24.68 each
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$246.80 box of 10
$24.68 each
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Product Image of 2-7/8" SpeediChannel Wall Sleeve (Natural)
$13.37 each
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Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (25 Ft.)
$137.40 each
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Product Image of 3.75" Slimduct Coupler (White)
$16.45 each
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$164.50 box of 10
$16.45 each
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Product Image of 4" Wall Penetration Cover (Natural)
4" Wall Penetration Cover (Natural)
SKU: LSWC400
Bluefin
SKU: LSWC400
Brand: Bluefin
(1)
$12.43 each
In Stock
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Product Image of Line Set Tape - Black (1.88" x 180')
$20.87 each
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Product Image of 1/4" LL x 1/2" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
$272.81 each
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Product Image of 3.5" White Wall Duct Kit - LDK92W (12 Ft Kit)
$151.52 each
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Product Image of 4" SpeediChannel Union Coupling (Natural)
$13.48 each
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Product Image of 3/8" Foam Puck (10 per Pack)
$12.88 each
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Product Image of 3.75" 90° Slimduct Flat Elbow (White)
$42.07 each
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$420.70 box of 10
$42.07 each
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Product Image of 4.5" White Wall Duct Kit - LDK122W (12 Ft Kit)
$179.10 each
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Product Image of 1/4" to 5/8" EasyBend Lineset Bender Minisplit Kit w/ 13' Mandrels
$92.71 each
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Product Image of TITAN OUTLET Retrofit Gray Line Set- 3/16" Gasket/Seal System for 1" Wall Insulation
$116.67 each
In Stock
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Product Image of 3" Union Coupling (Natural)
3" Union Coupling (Natural)
SKU: LSUC300
Bluefin
SKU: LSUC300
Brand: Bluefin
$4.14 each
In Stock
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Product Image of 3/8" LL x 5/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
$344.22 each
In Stock
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Product Image of 3" 90-Degree Flat Elbow Bend (Natural)
$8.51 each
In Stock
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Product Image of 4" Union Coupling (Natural)
4" Union Coupling (Natural)
SKU: LSUC400
Bluefin
SKU: LSUC400
Brand: Bluefin
$6.77 each
In Stock
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Product Image of 2.75" Slimduct Coupler - SJ-77-W (White)
2.75" Slimduct Coupler - SJ-77-W (White)
SKU: 86010-RECTORSEAL
Rectorseal
SKU: 86010-RECTORSEAL
Brand: Rectorseal
(2)
$8.53 each
BOX UP & SAVE 0%
$85.30 box of 10
$8.53 each
In Stock
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Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (15 Ft.)
$96.21 each
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Product Image of E-FLEX GUARD Black Line Set Cover for 5/8" and 7/8" Tubing w/ 3/4" Wall Insulation (6 ft)
$48.78 each
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Product Image of 4" x 6-1/2 Ft. SpeediChannel Line Set Cover (White)
$55.09 each
In Stock
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Product Image of TITAN OUTLET Gray Line Set Gasket/Seal System for 5/8", 3/4" and 7/8" Tubing w/ 3/4" Wall Insulation (for Siding)
$85.46 each
In Stock
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Product Image of 2.75" 90° Slimduct Flat Elbow (White)
2.75" 90° Slimduct Flat Elbow (White)
SKU: 86011-RECTORSEAL
Rectorseal
SKU: 86011-RECTORSEAL
Brand: Rectorseal
(1)
$22.47 each
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$224.70 box of 10
$22.47 each
In Stock
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Product Image of 3/4" Foam Puck (10 per Pack)
$14.96 each
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Product Image of Rx11-flush Liquid Starter Kit
Rx11-flush Liquid Starter Kit
SKU: 4300-38
Nu-Calgon
SKU: 4300-38
Brand: Nu-Calgon
(3)
$178.69 each
In Stock
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Product Image of Pro-Flush HVAC Flushing Solvent (16 oz)
$95.08 each
In Stock
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Product Image of 3/8" LL x 3/4" SL x 25 ft. Refrigerant Line Set
3/8" LL x 3/4" SL x 25 ft. Refrigerant Line Set
SKU: F383438025
ICOOL
SKU: F383438025
Brand: ICOOL
(29)
$204.83 each
In Stock
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Product Image of Lineset Cleaner
Lineset Cleaner
SKU: HLC007
Hilmor Tools
SKU: HLC007
Brand: Hilmor Tools
(3)
$386.45 each
In Stock
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Product Image of 5.5" x 6.5' Slimduct Duct Line Set Cover (White)
$108.43 each
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Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (30 Ft.)
$159.45 each
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Product Image of 4" 90-Degree Flat Elbow Bend (Natural)
4" 90-Degree Flat Elbow Bend (Natural)
SKU: LSFE400
Bluefin
SKU: LSFE400
Brand: Bluefin
(1)
$11.15 each
In Stock
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Product Image of TITAN OUTLET Gray Line Set Gasket/Seal System for 5/8", 3/4" and 7/8" Tubing w/ 3/4" Wall Insulation
$85.46 each
Out of Stock
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Product Image of 4" SpeediChannel Wall Penetration Cover (White)
4" SpeediChannel Wall Penetration Cover (White)
SKU: 230-WC4W
DiversiTech
SKU: 230-WC4W
Brand: DiversiTech
(2)
$33.32 each
In Stock
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More About Line Sets
Refrigerant line sets are flexible copper pipes that connect the outdoor condenser or heat pump to its corresponding indoor unit in a mini-split air conditioner system. They are composed of two types of lines: a liquid line and a suction line. The liquid line is the smaller of the two and connects the outdoor unit to the indoor unit. The suction line is the larger of the two lines and returns the expanded gas from the evaporator back to the condenser. Ductless mini split line sets can be cut with a tubing cutter to satisfy each individual installation requirement. Line set size is determined by the indoor unit, and longer line set runs will require adding refrigerant to the system.

We offer two types of refrigeration line sets. Flared refrigerant line sets are used with mini-split systems and both the suction and liquid lines are insulated. Our selection of standard refrigerant line sets have plain straight ends where only the suction line is insulated. Complete your systems with line set covers, connectors, and flush. Shop now to find the mini split line set best suited for your systems for optimal thermal comfort.