Air Conditioner Pair Coil/Copper Pipe Sizing Chart for Split System
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starPlease seek professionals for Air Conditioning installation. Please do not DIY.
There are 5 common sizes of copper pipes. See table:
| Ø Diameter (in inches) | Ø Diameter (in mm) |
| 1/4'' | 6.35 mm |
| 3/8'' | 9.52 mm |
| 1/2'' | 12.70 mm |
| 5/8'' | 15.88 mm |
| 3/4'' | 19.05 mm |
We have listed some popular brands Split System as below:
Please note: Check the latest brochures on each brand's official website for up-to-date refrigerant piping info.
Mitsubishi Heavy Industries- Avanti / Bronte Series:
| Model Number | Capacity | Pair coil sizes |
| SRK17ZMP-S / DXK05Z5-S | 1.7kw | 1/4'' 3/8'' |
| SRK20ZSA-W / DXK06ZSA-W | 2.0kw | 1/4'' 3/8'' |
| SRK2ZSA-W / DXK09ZSA-W | 2.5kw | 1/4'' 3/8'' |
| SRK35ZSA-W / DXK12ZSA-W | 3.5kw | 1/4'' 3/8'' |
| SRK50ZSA-W / DXK18ZSA-W | 5.0kw | 1/4'' 1/2'' |
| SRK63ZRA-W / DXK21ZRA-W | 6.3kw | 1/4'' 1/2'' |
| SRK71ZRA-W / DXK24ZRA-W | 7.1kw | 1/4'' 5/8'' |
| SRK80ZRA-W / DXK28ZRA-W | 8.0kw | 1/4'' 5/8'' |
| SRK95ZRA-W / DXK33ZRA-W | 9.5kw | 3/8'' 5/8'' |
Mitsubishi Heavy Industries- Avanti Plus Series:
| Model Number | Capacity | Pair coil sizes |
| SRK20ZSXA-W | 2.0kw | 1/4'' 3/8'' |
| SRK25ZSXA-W | 2.5kw | 1/4'' 3/8'' |
| SRK35ZSXA-W | 3.5kw | 1/4'' 3/8'' |
| SRK50ZSXA-W | 5.0kw | 1/4'' 1/2'' |
| SRK60ZSXA-W | 6.0kw | 1/4'' 1/2'' |
Mitsubishi Heavy Industries- Ciara Series:
| Model Number | Capacity | Pair coil sizes |
| DXK05ZTLA-WF | 1.5kw | 1/4'' 3/8'' |
| DXK07ZTLA-WF | 2.0kw | 1/4'' 3/8'' |
| DXK09ZTLA-WF | 2.5kw | 1/4'' 3/8'' |
| DXK12ZTLA-WF | 3.3kw | 1/4'' 3/8'' |
| DXK18ZTLA-WF | 5.0kw | 1/4'' 1/2'' |
| DXK21ZTLA-WF | 6.3kw | 1/4'' 1/2'' |
| DXK24ZTLA-WF | 7.1kw | 1/4'' 1/2'' |
Mitsubishi Electric:
| Model Number | Capacity | Pair coil sizes |
| MSZ-AP20VGD-A1 | 2.0 kw | 1/4" 3/8" |
| MSZ-AP25VGD-A1 | 2.5 kw | 1/4" 3/8" |
| MSZ-AP35VGD-A1 | 3.5 kw | 1/4" 3/8" |
| MSZ-AP42VGD-A1 | 4.0 kw | 1/4" 3/8" |
| MSZ-AP50VGD-A1 | 5.0 kw | 1/4'' 1/2'' |
| MSZ-AP60VGD-A1 | 6.0 kw | 1/4'' 1/2'' |
| MSZ-AP71VGD-A1 | 7.1 kw | 1/4'' 1/2'' |
| MSZ-AP80VGD-A1 | 8.0 kw | 1/4'' 1/2'' |
| MSZ-AS90VGD-A1 | 9.0 kw | 1/4'' 1/2'' |
Fujitsu - Lifestyle Next Series:
| Model Number | Capacity | Pair coil sizes |
| ASTH09KMTD-NXT | 2.5 kw | 1/4" 3/8" |
| ASTH12KMTD-NXT | 3.5 kw | 1/4" 3/8" |
| ASTH18KMTD-NXT | 5.0 kw | 1/4'' 1/2'' |
| ASTH22KMTD-NXT | 6.0 kw | 1/4'' 1/2'' |
| ASTH24KMTD-NXT | 7.1 kw | 1/4'' 1/2'' |
| ASTH30KMTD-NXT | 8.5 kw | 3/8'' 5/8'' |
| ASTH34KMTD-NXT | 9.5 kw | 3/8'' 5/8'' |
Fujitsu - Lifestyle Range:
| Model Number | Capacity | Pair coil sizes |
| ASTG09KMTC | 2.5 kw | 1/4" 3/8" |
| ASTG12KMTC | 3.5 kw | 1/4" 3/8" |
| ASTG18KMTC | 5.0 kw | 1/4'' 1/2'' |
| ASTG22KMTC | 6.0 kw | 1/4'' 1/2'' |
| ASTG24KMTC | 7.0 kw | 1/4'' 1/2'' |
| ASTG30KMTC | 8.5 kw | 3/8'' 5/8'' |
| ASTG34KMTC | 9.5 kw | 3/8'' 5/8'' |
Fujitsu - Comfort Series:
| Model Number | Capacity | Pair coil sizes |
| ASTH09KNCA | 2.5 kw | 1/4" 3/8" |
| ASTH12KNCA | 3.4 kw | 1/4" 3/8" |
| ASTH14KNCA | 4.2 kw | 1/4'' 1/2'' |
| ASTH18KNTA | 5.0 kw | 1/4'' 1/2'' |
| ASTH22KNTA | 6.0 kw | 1/4'' 1/2'' |
| ASTH24KNTA | 7.1 kw | 1/4'' 1/2'' |
| ASTH30KNTA | 8.5 kw | 3/8'' 5/8'' |
| ASTH34KNTA | 9.5 kw | 3/8'' 5/8'' |
Fujitsu - Classic Series:
| Model Number | Capacity | Pair coil sizes |
| ASTG09LVCC | 2.5 kw | 1/4" 3/8" |
| ASTG12LVCC | 3.5 kw | 1/4" 3/8" |
| ASTG18LVCC | 5.0 kw | 1/4'' 1/2'' |
| ASTG22LVCC | 6.3 kw | 1/4'' 5/8'' |
| ASTG24LFCC | 7.1 kw | 1/4'' 5/8'' |
| ASTG30LFCC | 8.0 kw | 3/8'' 5/8'' |
| ASTG34LFCC | 9.2 kw | 3/8'' 5/8'' |
Midea - Apollo Series:
| Model Number | Capacity | Pair coil sizes |
| MFAB-20NC | 2.0 kw | 1/4" 3/8" |
| MFAB26NB/WB | 2.6 kw | 1/4" 3/8" |
| MFAB35NB/WB | 3.5 kw | 1/4'' 1/2'' |
| MFAB50NB/WB | 5.0 kw | 1/4'' 1/2'' |
| MFAB70NB/WB | 7.0 kw | 3/8'' 5/8'' |
| MFAB90NB/WB | 9.0 kw | 3/8'' 5/8'' |
MIDEA - Gaia Series:
| Model Number | Capacity | Pair coil sizes |
| MFCA26VA-N | 2.6 kw | 1/4" 3/8" |
| MFCA35VA-N | 3.5 kw | 1/4" 3/8" |
GREE - Bora Series:
| Model Number | Capacity | Pair coil sizes |
| GWH09AAC-K6DNA1A/I | 2.5 kw | 1/4" 3/8" |
| GWH12AAC-K6DNA1F/I | 3.4 kw | 1/4" 3/8" |
| GWH18AAD-K6DNA1D/I | 5.2 kw | 1/4'' 1/2'' |
| GWH24AAE-K6DNA1F/I | 7.1 kw | 1/4'' 5/8'' |
| GWH32QF- K6DNC8D | 9 kw | 1/4'' 5/8'' |
GREE - Alto Hi-Wall Series:
| Model Number | Capacity | Pair coil sizes |
| GWH09ATBXB-K6DNA1C I/O | 2.7 kw | 1/4" 3/8" |
| GWH12ATCXB-K6DNA1B I/O | 3.5 kw | 1/4" 3/8" |
| GWH18ATDXD-K6DNA1C I/O | 5.2 kw | 1/4'' 1/2'' |
| GWH24ATEXF-K6DNA1E I/O | 7.1 kw | 1/4'' 1/2'' |
| GWH28ATEXF -K6DNA1A I/O | 8.2 kw | 1/4'' 1/2'' |
Daikin - LITE Series:
| Model Number | Capacity | Pair coil sizes |
| FTXV20WVMA / FTXF20WVMA | 2.0 kw | 1/4" 3/8" |
| FTXV25WVMA / FTXF25WVMA | 2.5 kw | 1/4" 3/8" |
| FTXV35WVMA / FTXF35WVMA | 3.5 kw | 1/4" 3/8" |
| FTXV46WVMA / FTXF46WVMA | 4.0 kw | 1/4'' 1/2'' |
| FTXF46WVMA | 4.6 kw | 1/4'' 1/2'' |
| FTXV50WVMA / FTXF50WVMA | 5.0 kw | 1/4'' 1/2'' |
| FTXV60WVMA | 6.0 kw | 1/4'' 1/2'' |
| FTXV71WVMA / FTXF71WVMA |
7.0 kw |
3/8'' 5/8'' |
| FTXV85LVMA | 8.5 kw | 3/8'' 5/8'' |
| FTXV95LVMA | 9.5 kw | 3/8'' 5/8'' |
Panasonic - Z Series / RZ Series:
| Model Number | Capacity | Pair coil sizes |
| CS-Z25XKR / CS-Z25VKR / CS-RZ25XKRW /CS-RZ25WKR | 2.5 kw | 1/4" 3/8" |
| CS-Z35XKR / CS-Z35VKR / CS-RZ35XKRW / CS-RZ35WKR | 3.5 kw | 1/4" 3/8" |
| CS-Z42XKR / CS-Z42VKR / CS-RZ42XKRW / CS-RZ42WKR | 4.2 kw | 1/4'' 1/2'' |
| CS-Z50XKR / CS-Z50VKR / CS-RZ50XKRW / CS-RZ50WKR | 5.0 kw | 1/4'' 1/2'' |
| CS-Z60XKR / CS-Z60VKR / CS-RZ60XKRW / CS-RZ60WKR | 6.0 kw | 1/4'' 1/2'' |
| CS-Z71XKR / CS-Z71VKR / CS-RZ71XKRW / CS-RZ71WKR | 7.1 kw | 1/4'' 5/8'' |
| CS-Z80XKR / CS-Z80VKR / CS-RZ80XKR / CS-RZ80WKR | 8.0 kw | 1/4'' 5/8'' |
KELVINATOR - Reverse Cycle:
| Model Number | Capacity | Pair coil sizes |
| KSD25HWJ | 2.5 kw | 1/4" 3/8" |
| KSD35HWJ | 3.5 kw | 1/4" 1/2" |
| KSD50HWJ | 5.0 kw | 1/4'' 1/2'' |
| KSD71HWJ | 7.1 kw | 3/8'' 5/8'' |
| KSD90HWJ | 9.0 kw | 3/8'' 5/8'' |
TOSHIBA - Seiya Hi-Wall Split System:
| Model Number | Capacity | Pair coil sizes |
| RAS-07E2KV2G-A | 2.0 kw | 1/4" 3/8" |
| RAS-10E2KV2G-A | 2.5 kw | 1/4" 3/8" |
| RAS-13E2KV2G-A | 3.5 kw | 1/4" 3/8" |
| RAS-16E2KV2G-A | 4.2 kw | 1/4'' 1/2'' |
| RAS-18E2KV2G-A | 5.0 kw | 1/4'' 1/2'' |
| RAS-22E2KV2G-A | 6.0 kw | 1/4'' 1/2'' |
| RAS-24E2KV2G-A | 7.1 kw | 1/4'' 1/2'' |
TOSHIBA - Seiya Classic Hi-Wall Split System:
| Model Number | Capacity | Pair coil sizes |
| RAS-07E2KVG-A | 2.0 kw | 1/4" 3/8" |
| RAS-10E2KVG-A | 2.5 kw | 1/4" 3/8" |
| RAS-13E2KVG-A | 3.5 kw | 1/4" 3/8" |
| RAS-16E2KVG-A | 4.2 kw | 1/4'' 1/2'' |
| RAS-18E2KVG-A | 5.0 kw | 1/4'' 1/2'' |
| RAS-22E2KVG-A | 6.0 kw | 1/4'' 1/2'' |
| RAS-24E2KVG-A | 7.1 kw | 1/4'' 1/2'' |
| RAS-30E2KVG-A | 8.0 kw | 3/8'' 5/8'' |
| RAS-34E2KVG-A | 9.0 kw | 3/8'' 5/8'' |
| RAS-36E2KVG-A | 10.0 kw | 3/8'' 5/8'' |
TOSHIBA - Shorai Edge Inverter Hi-Wall Split System:
| Model Number | Capacity | Pair coil sizes |
| RAS-07E2KVSG-A | 2.0 kw | 1/4" 3/8" |
| RAS-10E2KV2G-A | 2.5 kw | 1/4" 3/8" |
| RAS-13E2KV2G-A | 3.5 kw | 1/4" 3/8" |
| RAS-16E2KV2G-A | 4.2 kw | 1/4'' 1/2'' |
| RAS-18E2KV2G-A | 5.0 kw | 1/4'' 1/2'' |
| RAS-22E2KV2G-A | 6.0 kw | 1/4'' 1/2'' |
| RAS-24E2KV2G-A | 7.1 kw | 1/4'' 1/2'' |
TOSHIBA - Haori Inverter Hi-Wall Split System:
| Model Number | Capacity | Pair coil sizes |
| RAS-B10E2KVRG-A | 2.5 kw | 1/4" 3/8" |
| RAS-B13E2KVRG-A | 3.5 kw | 1/4" 3/8" |
| RAS-B16E2KVRG-A | 4.6 kw | 1/4'' 1/2'' |
SAMSUNG - AI Smart AIRISE WindFree™ Purification System:
| Model Number | Capacity | Pair coil sizes |
| AR09BXECNWKNSA | 2.5 kw | 1/4" 3/8" |
| AR12BXECNWKNSA | 3.5 kw | 1/4" 3/8" |
| AR18BXECNWKNSA | 5.0 kw | 1/4'' 1/2'' |
| AR24BXECNWKNSA | 7.0 kw | 1/4'' 5/8'' |
| AR30BXECNWKNSA | 8.0 kw | 1/4'' 5/8'' |
SAMSUNG - AI Smart GEO WindFree™ Purification System:
| Model Number | Capacity | Pair coil sizes |
| AR09BXEABWKNSA | 2.5 kw | 1/4" 3/8" |
| AR12BXEABWKNSA | 3.5 kw | 1/4" 3/8" |
| AR18BXEABWKNSA | 5.0 kw | 1/4'' 1/2'' |
| AR24BXEABWKNSA | 7.0 kw | 1/4'' 5/8'' |
| AR30BXEABWKNSA | 8.0 kw | 1/4'' 5/8'' |
SAMSUNG - Geo+ Split System, Tri-Care Purification:
| Model Number | Capacity | Pair coil sizes |
| AR09BXGYCWKNSA | 2.5 kw | 1/4" 3/8" |
| AR12BXGYCWKNSA | 3.5 kw | 1/4" 3/8" |
| AR18BXGYCWKNSA | 5.0 kw | 1/4'' 1/2'' |
| AR24BXGYCWKNSA | 6.8 kw | 1/4'' 5/8'' |
| AR30BXGYCWKNSA | 8.0 kw | 1/4'' 5/8'' |
SAMSUNG - Bedarra Split System, DRED:
| Model Number | Capacity | Pair coil sizes |
| AR09AXHQAWKNSA | 2.5 kw | 1/4" 3/8" |
| AR12AXHQAWKNSA | 3.5 kw | 1/4'' 1/2'' |
| AR18AXHQAWKNSA | 5.1 kw | 1/4'' 1/2'' |
| AR24AXHQAWKNSA | 7.1 kw | 3/8'' 5/8'' |
LG - High Efficiency Reverse Cycle:
| Model Number | Capacity | Pair coil sizes |
| WH09SK-18 | 2.5 kw | 1/4" 3/8" |
| WH12SK-18 | 3.5 kw | 1/4" 3/8" |
| WH18SL-23 | 5.0 kw | 1/4'' 1/2'' |
| WH21SL-23 | 6.1 kw | 3/8'' 5/8'' |
| WH24SL-23 | 7.1 kw | 3/8'' 5/8'' |
| WH30SR-18 | 8.5 kw | 3/8'' 5/8'' |
| WH34SR-18 | 9.4 kw | 3/8'' 5/8'' |
LG - Smart Series:
| Model Number | Capacity | Pair coil sizes |
| WH09TWS | 2.6 kw | 1/4" 3/8" |
| WH12TWS | 3.4 kw | 1/4" 3/8" |
| WH18TWS | 4.8 kw | 1/4'' 1/2'' |
| WH24TWS | 6.3 kw | 1/4'' 5/8'' |
Hisense - V Series:
| Model Number | Capacity | Pair coil sizes |
| HAWV9KRD | 2.5 kw | 1/4" 3/8" |
| HAWV12KRD | 3.5 kw | 1/4" 3/8" |
| HAWV18KR | 5.0 kw | 1/4'' 1/2'' |
| HAWV24KR | 7.1 kw | 3/8'' 5/8'' |
| HAWV28KR | 8.0 kw | 3/8'' 5/8'' |
Hisense - J Series:
| Model Number | Capacity | Pair coil sizes |
| HAWJ9KR | 2.5 kw | 1/4" 3/8" |
| HAWJ12KR | 3.5 kw | 1/4" 3/8" |
| HAWJ18KR | 5.0 kw | 1/4'' 1/2'' |
| HAWJ24KRP | 7.1 kw | 1/4'' 1/2'' |
| HAWJ28KR | 8.0 kw | 3/8'' 5/8'' |
Teco - Platinum 3D Series:
| Model Number | Capacity | Pair coil sizes |
| TWS26H3DVJT/TSO26H3DVJT | 2.6 kw | 1/4" 3/8" |
| TWS35H3DVJT/TSO35H3DVJT | 3.5 kw | 1/4'' 1/2'' |
| TWS52H3DVJT/TSO52H3DVJT | 5.2 kw | 1/4'' 1/2'' |
| TWS72H3DVJT/TSO72H3DVJT | 7.2 kw | 1/4'' 5/8'' |
| TWS88H3DVJT/TSO88H3DVJT | 8.8 kw | 1/4'' 5/8'' |
Teco - Comfort Series:
| Model Number | Capacity | Pair coil sizes |
| TWS25HVHT/TSO25HVHT | 2.5 kw | 1/4" 3/8" |
| TWS32HVHT/TSO32HVHT | 3.2 kw | 1/4" 3/8" |
| TWS52HVHT/TSO52HVHT | 5.2 kw | 1/4" 3/8" |
| TWS71HVHT/TSO71HVHT | 7.1 kw | 1/4'' 5/8'' |
Carrier - Indigo Inverter Hi Wall:
| Model Number | Capacity | Pair coil sizes |
| 42QAG020N8/38QAG020N8 | 2.0 kw | 1/4" 3/8" |
| 42QAG026N8/38QAG026N8 | 2.6 kw | 1/4" 3/8" |
| 42QAG035N8/38QAG035N8 | 3.5 kw | 1/4" 3/8" |
| 42QAG050N8/38QAG050N8 | 5.0 kw | 1/4'' 1/2'' |
| 42QAG060N8/38QAG060N8 | 6.0 kw | 1/4'' 1/2'' |
| 42QAG070N8/38QAG070N8 | 7.0 kw | 1/4'' 5/8'' |
| 42QAG080N8/38QAG080N8 | 8.0 kw | 1/4'' 5/8'' |
Carrier - Allure Plus Inverter Hi Wall:
| Model Number | Capacity | Pair coil sizes |
| 53QHG020N8-1 | 2.0 kw | 1/4" 3/8" |
| 53QHG026N8-1 | 2.6 kw | 1/4" 3/8" |
| 53QHG035N8-1 | 3.5 kw | 1/4" 3/8" |
| 53QHG050N8-1 | 5.0 kw | 1/4'' 1/2'' |
| 53QHG060N8-1 | 6.0 kw | 1/4'' 1/2'' |
| 53QHG070N8-1 | 7.0 kw | 1/4'' 5/8'' |
| 53QHG080N8-1 | 8.0 kw | 1/4'' 5/8'' |
Westinghouse:
| Model Number | Capacity | Pair coil sizes |
| WSD27HWA | 2.7 kw | 1/4" 3/8" |
| WSD36HWA | 3.6 kw | 1/4" 1/2'' |
| WSD51HWA | 5.1 kw | 1/4'' 1/2'' |
| WSD73HWA | 7.3 kw | 1/4'' 5/8'' |
| WSD91HWA | 9.1 kw | 3/8'' 5/8'' |
Rinnai - J Series:
| Model Number | Capacity | Pair coil sizes |
| HSNRJ25B1 | 2.6 kw | 1/4" 3/8" |
| HSNRJ35B1 | 3.5 kw | 1/4" 1/2'' |
| HSNRJ50B1 | 5.2 kw | 1/4'' 1/2'' |
| HSNRJ70B1 | 7.0 kw | 1/4'' 5/8'' |
| HSNRJ80B1 | 8.0 kw | 1/4'' 5/8'' |
Rinnai - PB Series:
| Model Number | Capacity | Pair coil sizes |
| HSNRP26B | 2.6 kw | 1/4" 3/8" |
| HSNRP35B | 3.5 kw | 1/4" 3/8" |
| HSNRP50B | 5.2 kw | 1/4'' 1/2'' |
| HSNRP60B | 6.0 kw | 1/4'' 1/2'' |
| HSNRP70B | 7.0 kw | 1/4'' 5/8'' |
| HSNRP80B | 8.0 kw | 1/4'' 5/8'' |
Rinnai - T Series:
| Model Number | Capacity | Pair coil sizes |
| HSNRT25B | 2.5kw | 1/4" 3/8" |
| HSNRT35B | 3.5 kw | 1/4" 1/2'' |
| HSNRT50B | 5.0 kw | 1/4'' 1/2'' |
| HSNRT70B | 7.0 kw | 1/4'' 5/8'' |
| HSNRT80B | 8.0 kw | 1/4'' 5/8'' |