Where can I buy a r22 4ton ac unit

For the most part they are all sold BUT Haier Air corporation is known to have about 7 million dollars worth of equipment that they are selling located in a warehouse. Now unless you are a owner of a HVAC company you may not be able to buy but a local dealer close to you can probably get one and then sell it to you. You might also check Ebay since many times new old stock shows up there for sale.

Haier Air

R-22 HVAC INVENTORY of Haier Air (http://www.r22hvac.com/)

OR 1-877-296-5019