Upon arrival customer told me the heat was not working. The indoor fan would run and outdoor fan would turn on then off. I went out side and thought I heard a little leak. I put my gauges on and at standing pressure was low on R22. I turned the heat on and walked outside and the leak got bigger and I can hear it. The system is shot and needs to be replaced. This is a tenant and he is trying to buy the home. He will call us when he want an estimate for replacement and new duct work.