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Insulated (82)
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Suction Line

1/4" (13)
3/8" (22)
1/2" (26)
5/8" (23)
3/4" (15)
7/8" (13)

Liquid Line

1/4" (38)
3/8" (29)
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5/8" (11)
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6.5' (13)
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25' (9)
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Line Sets

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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.
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1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
$163.40 each
Get 236 by Wed, Oct 4
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Get 236 by Wed, Oct 4
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Multidrain Position Rough-In Box
Multidrain Position Rough-In Box
SKU: RBX3-MD-NC
RoughinBox
SKU: RBX3-MD-NC
Brand: RoughinBox
(2)
$45.98 each
Get 696 by Wed, Oct 4
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1/4" to 5/8" EasyBend Lineset Bender Minisplit Kit w/ 13' Mandrels
$66.59 each
Get 135 by Wed, Oct 4
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Get 135 by Wed, Oct 4
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1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 3/8" Insulation (50 Ft.)
$158.64 each
Get 340 by Wed, Oct 4
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Get 340 by Wed, Oct 4
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1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (25 Ft.)
$94.04 each
Get 88 by Wed, Oct 4
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Get 88 by Wed, Oct 4
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3.75" x 6.5' Slimduct Duct Line Set Cover (White)
$58.90 each
Get 398 by Wed, Oct 4
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Get 398 by Wed, Oct 4
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1/4" LL x 1/2" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
1/4" LL x 1/2" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
SKU: B141212050F
ICOOL
SKU: B141212050F
Brand: ICOOL
(30)
$227.99 each
Get 27 by Wed, Oct 4
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3.75" Slimduct Wall Inlet (White)
$30.99 each
BOX UP & SAVE 6%
$292.70 box of 10
$29.27 each
Get 293 by Wed, Oct 4
More Available
Get 293 by Wed, Oct 4
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4.5" White Wall Duct Kit - LDK122W (12 Ft Kit)
$118.75 each
Get 55 by Wed, Oct 4
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3.5" White Wall Duct Kit - LDK92W (12 Ft Kit)
$99.99 each
Get 107 by Wed, Oct 4
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Get 107 by Wed, Oct 4
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2.75" x 6.5' Slimduct Duct Line Set Cover - SD-77-W (White)
$41.85 each
Get 312 by Wed, Oct 4
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Get 312 by Wed, Oct 4
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4" SpeediChannel Wall Penetration Cover (Natural)
$30.24 each
Get 112 by Wed, Oct 4
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Get 112 by Wed, Oct 4
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Line Set Tape - Black (1.88" x 180')
$19.31 each
Get 108 by Wed, Oct 4
More Available
Get 108 by Wed, Oct 4
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3.75" Slimduct Coupler (White)
$12.06 each
BOX UP & SAVE 4%
$115.20 box of 10
$11.52 each
Get 436 by Wed, Oct 4
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Get 436 by Wed, Oct 4
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3/8" LL x 5/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (50 Ft.)
$275.49 each
Get 27 by Wed, Oct 4
More Available
Get 27 by Wed, Oct 4
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1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (30 Ft.)
$113.99 each
Get 61 by Wed, Oct 4
More Available
Get 61 by Wed, Oct 4
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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
$19.00 each
BOX UP & SAVE 5%
$180.90 box of 10
$18.09 each
Get 153 by Wed, Oct 4
More Available
Get 153 by Wed, Oct 4
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1/4" LL x 3/8" SL Mini Split Refrigerant Line Set w/ Flare Nuts, 1/2" Insulation (15 Ft.)
$71.99 each
Get 31 by Fri, Oct 6
Get 31 by Fri, Oct 6
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2-1/2" SpeediChannel Wall Sleeve (Natural)
$13.74 each
Get 306 by Wed, Oct 4
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Get 306 by Wed, Oct 4
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4" x 6 Ft. SpeediChannel Line Set Cover (Natural)
$64.22 each
Get 207 by Wed, Oct 4
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Get 207 by Wed, Oct 4
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Line Set Tape - White (2" x 180')
$12.94 each
Get it by Tue, Oct 31 - Wed, Nov 29
Get it by Tue, Oct 31 - Wed, Nov 29
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3.75" 90° Slimduct Flat Elbow (White)
$30.82 each
BOX UP & SAVE 6%
$291.10 box of 10
$29.11 each
Get 324 by Wed, Oct 4
More Available
Get 324 by Wed, Oct 4
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3" x 70' Non-Adhesive Tape
3" x 70' Non-Adhesive Tape
SKU: 83016
Rectorseal
SKU: 83016
Brand: