Know a trades student? We're giving away $2,500 scholarships - have them apply today!
Filter menu expanded

Filters

954 items
Reset

SORT

Product Availability
–

Show In Stock Only (840)

Brand
–

Airex (58)
Bluefin (59)
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" (96)
3/8" (117)
1/2" (16)
5/8" (15)
3/4" (16)
7/8" (12)

Length (Feet)
–

1.7' (1)
15' (16)
6' (12)
13' (7)
16' (3)
164' (11)
20' (2)
25' (38)
26' (4)
30' (23)

Insulation Thickness
–

1/2" (173)
3/8" (39)
3/4" (59)
1" (39)

Review Score
–

(146)
(56)
(16)
(8)
(8)

Price Range
–

Under $1 (2)
$1 to $5 (8)
$5 to $10 (40)
$10 to $15 (63)
$15 to $20 (64)
$20 to $25 (49)
$25 to $30 (55)
$30 to $35 (54)
$35 to $40 (48)
$40 to $45 (41)

Line Sets

Help Face
Need a little help?
954 items
Grid
List
Compare
Product Image of Multidrain Position Rough-In Box
Multidrain Position Rough-In Box
SKU: RBX3-MD-NC
RoughinBox
SKU: RBX3-MD-NC
Brand: RoughinBox
(15)
$49.26 each
In Stock
Get 593 by Tomorrow, Nov 4
In Stock
Get 593 by Tomorrow, Nov 4
Compare
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)
$73.50 each
In Stock
Get 55 by Tomorrow, Nov 4
In Stock
Get 55 by Tomorrow, Nov 4
Compare
Product Image of LS 300 Black Printed UV Resistant Line Set Tape (2" x 180')
$8.75 each
In Stock
Get 193 by Tomorrow, Nov 4
In Stock
Get 193 by Tomorrow, Nov 4
Compare
Product Image of 3.75" x 6.5' Slimduct Duct Line Set Cover (White)
$82.77 each
In Stock
Get 227 by Tomorrow, Nov 4
In Stock
Get 227 by Tomorrow, Nov 4
Compare
Product Image of 4" SpeediChannel Wall Penetration Cover (Natural)
$23.64 each
In Stock
Get 184 by Tomorrow, Nov 4
In Stock
Get 184 by Tomorrow, Nov 4
Compare
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
In Stock
Get 286 by Tomorrow, Nov 4
In Stock
Get 286 by Tomorrow, Nov 4
Compare
Product Image of 3.75" Slimduct Wall Inlet (White)
$43.54 each
BOX UP & SAVE 0%
$435.40 box of 10
$43.54 each
In Stock
Get 29 by Tomorrow, Nov 4
In Stock
Get 29 by Tomorrow, Nov 4
Compare
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
Get 389 by Tomorrow, Nov 4
In Stock
Get 389 by Tomorrow, Nov 4
Compare
Product Image of 3/8" Foam Puck (10 per Pack)
$12.88 each
In Stock
Get 66 by Tomorrow, Nov 4
In Stock
Get 66 by Tomorrow, Nov 4
Compare
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
(4)
$30.60 each
In Stock
Get 771 by Tomorrow, Nov 4
In Stock
Get 771 by Tomorrow, Nov 4
Compare
Product Image of 2.75" x 6.5' Slimduct Duct Line Set Cover - SD-77-W (White)
$58.82 each
In Stock
Get 117 by Tomorrow, Nov 4
In Stock
Get 117 by Tomorrow, Nov 4
Compare
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
In Stock
Get 123 by Tomorrow, Nov 4
In Stock
Get 123 by Tomorrow, Nov 4
Compare
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
Get 195 by Tomorrow, Nov 4
In Stock
Get 195 by Tomorrow, Nov 4
Compare
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
$87.24 each
In Stock
Get 122 by Tomorrow, Nov 4
In Stock
Get 122 by Tomorrow, Nov 4
Compare
Product Image of 3.75" Slimduct Coupler (White)
$16.94 each
BOX UP & SAVE 0%
$169.40 box of 10
$16.94 each
In Stock
Get 94 by Tomorrow, Nov 4
In Stock
Get 94 by Tomorrow, Nov 4
Compare
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)
$25.42 each
BOX UP & SAVE 0%
$254.20 box of 10
$25.42 each
In Stock
Get 63 by Tomorrow, Nov 4
In Stock
Get 63 by Tomorrow, Nov 4
Compare
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
Get 174 by Tomorrow, Nov 4
In Stock
Get 174 by Tomorrow, Nov 4
Compare
Product Image of Lineset Cleaner
Lineset Cleaner
SKU: HLC007
Hilmor Tools
SKU: HLC007
Brand: Hilmor Tools
(4)
$386.46 each
In Stock
Get 30 by Tomorrow, Nov 4
In Stock
Get 30 by Tomorrow, Nov 4
Compare
Product Image of 3/4" Foam Puck (10 per Pack)
$14.81 each
In Stock
Get 60 by Tomorrow, Nov 4
In Stock
Get 60 by Tomorrow, Nov 4
Compare
Product Image of 3.75" 90° Slimduct Flat Elbow (White)
$43.33 each
BOX UP & SAVE 0%
$433.30 box of 10
$43.33 each
In Stock
Get 56 by Tomorrow, Nov 4
In Stock
Get 56 by Tomorrow, Nov 4
Compare
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
In Stock
Get 56 by Tomorrow, Nov 4
In Stock
Get 56 by Tomorrow, Nov 4
Compare
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
In Stock
Get 101 by Tomorrow, Nov 4
In Stock
Get 101 by Tomorrow, Nov 4
Compare
Product Image of 4" SpeediChannel Union Coupling (Natural)
$13.48 each
In Stock
Get 106 by Tomorrow, Nov 4
In Stock
Get 106 by Tomorrow, Nov 4
Compare
Product Image of TITAN OUTLET Retrofit Gray Line Set- 3/16" Gasket/Seal System for 1" Wall Insulation
$119.00 each
In Stock
Get 83 by Tomorrow, Nov 4
In Stock
Get 83 by Tomorrow, Nov 4
Compare
Product Image of 4.5" White Wall Duct Kit - LDK122W (12 Ft Kit)
$184.47 each
In Stock
Get 22 by Tomorrow, Nov 4
In Stock
Get 22 by Tomorrow, Nov 4
Compare
Product Image of 4" Union Coupling (Natural)
4" Union Coupling (Natural)
SKU: LSUC400
Bluefin
SKU: LSUC400
Brand: Bluefin
$6.77 each
In Stock
Get 387 by Tomorrow, Nov 4
In Stock
Get 387 by Tomorrow, Nov 4
Compare
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
In Stock
Get 49 by Tomorrow, Nov 4
In Stock
Get 49 by Tomorrow, Nov 4
Compare
Product Image of Line Set Tape - White (2" x 180')
$15.56 each
In Stock
Get 32 by Tomorrow, Nov 4
In Stock
Get 32 by Tomorrow, Nov 4
Compare
Product Image of 3.5" White Wall Duct Kit - LDK92W (12 Ft Kit)
$156.07 each
In Stock
Get 46 by Tomorrow, Nov 4
In Stock
Get 46 by Tomorrow, Nov 4
Compare
Product Image of 1/4" to 5/8" EasyBend Lineset Bender Minisplit Kit w/ 13' Mandrels
$95.49 each
In Stock
Get 29 by Tomorrow, Nov 4
In Stock
Get 29 by Tomorrow, Nov 4
Compare
Product Image of 3" Union Coupling (Natural)
3" Union Coupling (Natural)
SKU: LSUC300
Bluefin
SKU: LSUC300
Brand: Bluefin
$4.14 each
In Stock
Get 499 by Tomorrow, Nov 4
In Stock
Get 499 by Tomorrow, Nov 4
Compare
Product Image of 4" x 6-1/2 Ft. SpeediChannel Line Set Cover (White)
$55.09 each
In Stock
Get 4 by Tomorrow, Nov 4
In Stock
Get 4 by Tomorrow, Nov 4
Compare
Product Image of Line Set Tape - Black (1.88" x 180')
$24.28 each
In Stock
Get 65 by Tomorrow, Nov 4
In Stock
Get 65 by Tomorrow, Nov 4
Compare
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
In Stock
Get 76 by Tomorrow, Nov 4
In Stock
Get 76 by Tomorrow, Nov 4
Compare
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)
$8.79 each
BOX UP & SAVE -0%
$87.90 box of 10
$8.79 each
In Stock
Get 57 by Tomorrow, Nov 4
In Stock
Get 57 by Tomorrow, Nov 4
Compare
Product Image of 2-7/8" SpeediChannel Wall Sleeve (Natural)
$13.37 each
In Stock
Get 181 by Tomorrow, Nov 4
In Stock
Get 181 by Tomorrow, Nov 4
Compare
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)
$87.21 each
In Stock
Get 58 by Tomorrow, Nov 4
In Stock
Get 58 by Tomorrow, Nov 4
Compare
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
Get 95 by Tomorrow, Nov 4
In Stock
Get 95 by Tomorrow, Nov 4
Compare
Product Image of 3" 90-Degree Flat Elbow Bend (Natural)
$8.51 each
In Stock
Get 70 by Tomorrow, Nov 4
In Stock
Get 70 by Tomorrow, Nov 4
Compare
Product Image of 7/8" Foam Puck (10 per Pack)
$16.18 each
In Stock
Get 34 by Tomorrow, Nov 4
In Stock
Get 34 by Tomorrow, Nov 4
Compare
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)
$23.14 each
BOX UP & SAVE 0%
$231.40 box of 10
$23.14 each
In Stock
Get 55 by Tomorrow, Nov 4
In Stock
Get 55 by Tomorrow, Nov 4
Compare
Product Image of 4" SpeediChannel Wall Penetration Cover (White)
$33.32 each
In Stock
Get 2 by Tomorrow, Nov 4
In Stock
Get 2 by Tomorrow, Nov 4
Compare
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)
$196.55 each
In Stock
Get 9 by Tomorrow, Nov 4
In Stock
Get 9 by Tomorrow, Nov 4
Compare
Product Image of 3" EasyGuard Line Set Cover (White)
$28.86 each
In Stock
Get 2 by Tomorrow, Nov 4
In Stock
Get 2 by Tomorrow, Nov 4
Compare
Product Image of 2.75" x 6.5' Slimduct Duct Line Set Cover - SD-77-K (Black)
$68.60 each
In Stock
Get 180 by Tomorrow, Nov 4
In Stock
Get 180 by Tomorrow, Nov 4
Compare
Product Image of Pro-Flush HVAC Flushing Solvent (16 oz)
$96.98 each
In Stock
Get 85 by Tomorrow, Nov 4
In Stock
Get 85 by Tomorrow, Nov 4
Compare
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
Get 55 by Tomorrow, Nov 4
In Stock
Get 55 by Tomorrow, Nov 4
Compare
Product Image of 1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (100 Ft.)
$414.38 each
In Stock
Get 16 by Tomorrow, Nov 4
In Stock
Get 16 by Tomorrow, Nov 4
Resources
FAQs, Manuals & Videos
Videos
Articles
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.