I used to use Bell Cow HVAC for my heating and air conditioning needs up until a couple of days ago. Bell Cow tried saying it was a $ 500.00 part at first, than they said it was another $500 part than tried to say my heat exchanger was cracked than suggested I get a whole new unit. With all that being said than they wanted me to get a new air conditioning system as well. So what started out at 500 ended up at nearly 6000. What a joke. Had another company come out and check the whole system out. Yes it was the original $500.00 and nothing else. The manager and technician from Bell Cow were on the phone the whole time, he was here. The manager was trying to tell me what was wrong without stepping foot onto my property. I will never recommend them to anyone any more. your loss, trying to get over on people.