I am giving a review for a service repair for my 13 yr old Heating + Air conditioner. This year the air conditioner did not cool.so I called Econo Air and scheduled a diagnostic ck. Afonso w/ Econo said there was a leak. I was most impressed overall as Afonso ck'd with me before each step taken and the cost for supplies/service beats the cost of buying new. Keeping fingers X, Sealant works and I'll be cool.