
MRCOOL® 75ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
MRCOOL® 75ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with:
- 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
- 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B
- 1x MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B, and 50 ft of DIY Pro Cable to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using our DIY coupler to increase the desired length of the quick connect line sets. This also comes with the communication wire needed to connect your DIY air handler to your DIY Condenser. This coupler extends the line sets connected to the 6K, 9K, 12K, and 18K Line Sets.
Features:
- Can combine using a DIY coupler to increase the desired length of the line sets
- Simple to use screw-on quick connect valves
- Quicker installation than conventional line sets by saving 7-installation steps
- 3/4 in. UV protective insulation sleeve
What's Included:
- 1x Set of MRCOOL® DIY Couplers for 6K, 9K, 12K, & 18K Line Sets
- 1x MRCOOL® 75' DIY Pro Cable
Coupler Kit Manual:
Coupler Kit Install Video:
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY50-1438C-O |
| GTIN | 00840255589192 |
| UPC | 840255589192 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
6.07 |
|
LINE SET LENGTH |
50 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
24 |
|
GROSS DEPTH (IN) |
37.2 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
37.2 |
|
GROSS WEIGHT (LBS) |
29.5 |
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY25-1438-O |
| GTIN | 00840255589161 |
| UPC | 840255589161 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
2.12 |
|
LINE SET LENGTH |
25 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
10.4 |
|
GROSS DEPTH (IN) |
32.09 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
32.09 |
|
GROSS WEIGHT (LBS) |
14.6 |
MRCOOL® 75ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with:
- 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
- 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B
- 1x MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B, and 50 ft of DIY Pro Cable to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using our DIY coupler to increase the desired length of the quick connect line sets. This also comes with the communication wire needed to connect your DIY air handler to your DIY Condenser. This coupler extends the line sets connected to the 6K, 9K, 12K, and 18K Line Sets.
Features:
- Can combine using a DIY coupler to increase the desired length of the line sets
- Simple to use screw-on quick connect valves
- Quicker installation than conventional line sets by saving 7-installation steps
- 3/4 in. UV protective insulation sleeve
What's Included:
- 1x Set of MRCOOL® DIY Couplers for 6K, 9K, 12K, & 18K Line Sets
- 1x MRCOOL® 75' DIY Pro Cable
Coupler Kit Manual:
Coupler Kit Install Video:
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY50-1438C-O |
| GTIN | 00840255589192 |
| UPC | 840255589192 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
6.07 |
|
LINE SET LENGTH |
50 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
24 |
|
GROSS DEPTH (IN) |
37.2 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
37.2 |
|
GROSS WEIGHT (LBS) |
29.5 |
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY25-1438-O |
| GTIN | 00840255589161 |
| UPC | 840255589161 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
2.12 |
|
LINE SET LENGTH |
25 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
10.4 |
|
GROSS DEPTH (IN) |
32.09 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
32.09 |
|
GROSS WEIGHT (LBS) |
14.6 |
Original: $1,278.00
-70%$1,278.00
$383.40Description
MRCOOL® 75ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with:
- 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
- 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B
- 1x MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B, and 50 ft of DIY Pro Cable to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using the MRCOOL DIY coupler to increase the desired length of the quick connect line sets. This kit comes with 1x MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B to connect your DIY air handler to your DIY condenser.
Features:
- Can be combined with other Pre-Charged DIY line sets to increase the desired length using the DIY coupler
- Simple to use screw-on quick connect valves
- Quicker installation than standard line sets, pre-charged means no vacuuming or charging will be necessary
- UV protective insulation sleeve
MRCOOL® DIY 4th/5th Gen Line Set Coupler Kit (One set of Couplers) with 75ft DIY Pro Cable for 6K, 9K, 12K, & 18K Line Sets

When 1-standard size DIY Quick Connect line set is not long enough, 2-standard quick connect line sets can be combined using our DIY coupler to increase the desired length of the quick connect line sets. This also comes with the communication wire needed to connect your DIY air handler to your DIY Condenser. This coupler extends the line sets connected to the 6K, 9K, 12K, and 18K Line Sets.
Features:
- Can combine using a DIY coupler to increase the desired length of the line sets
- Simple to use screw-on quick connect valves
- Quicker installation than conventional line sets by saving 7-installation steps
- 3/4 in. UV protective insulation sleeve
What's Included:
- 1x Set of MRCOOL® DIY Couplers for 6K, 9K, 12K, & 18K Line Sets
- 1x MRCOOL® 75' DIY Pro Cable
Coupler Kit Manual:
Coupler Kit Install Video:
MRCOOL® 50ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY50-1438C-O |
| GTIN | 00840255589192 |
| UPC | 840255589192 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
6.07 |
|
LINE SET LENGTH |
50 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
24 |
|
GROSS DEPTH (IN) |
37.2 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
37.2 |
|
GROSS WEIGHT (LBS) |
29.5 |
MRCOOL® 25ft 1/4 x 3/8 Pre-Charged Lineset for DIY 6K, 9K & 12K Indoor - R454B Specifications:
| BRAND | MRCOOL® |
| SERIES |
DIY Line Set - R-454B |
| MODEL |
DIY25-1438-O |
| GTIN | 00840255589161 |
| UPC | 840255589161 |
|
UNIT TYPE |
Accessories |
|
EQUIPMENT TYPE |
R-454B Charged Line Set |
| COLOR |
White |
|
COLOR FAMILY |
Bronze/Copper Metallic |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
2.12 |
|
LINE SET LENGTH |
25 ft |
|
LINESET FITTING TYPE |
Quick-Connection |
|
LIQUID LINE SIZE |
1/4 |
|
SUCTION LINE SIZE |
3/8 |
|
REGISTERED WARRANTY |
N/A |
|
HAS BATTERIES |
No |
|
CONTAINS ELECTRONICS |
No |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
RESTRICTED STATES |
GU;PR;VI |
|
NET WEIGHT (LBS) |
10.4 |
|
GROSS DEPTH (IN) |
32.09 |
|
GROSS HEIGHT (IN) |
4.92 |
|
GROSS WIDTH (IN) |
32.09 |
|
GROSS WEIGHT (LBS) |
14.6 |


















