The technician was prompt and went right to work. I mentioned a natural gas odor also. He said he would use a "gas sniffer" device, and would have to leave to go get it. That only took about 15 minutes. He found the leak in a gas line fitting and coupled it properly. by then the A/C pressure check was done, Then I asked for ,and he gave me, an estimate on new furnace and A/C units. I was happy with the work he had done for me.