看看室外机组的制冷剂是什么型号的,然后Amazon上买工具,ebay上买制冷剂。
Gauge Set
R22 refrigerant
https://www.ebay.com/itm/R22-Refrigerant-5-lb-Cylinder-5-lbs-of-Refrigerant-in-Cylinder-BEST-PRICE-EBAY/401606076698?hash=item5d8196691a:rk:1:pf:0
R22 refrigerant
https://www.ebay.com/itm/R22-Refrigerant-5-lb-Cylinder-5-lbs-of-Refrigerant-in-Cylinder-BEST-PRICE-EBAY/401606076698?hash=item5d8196691a:rk:1:pf:0