We called around other air-conditioning and furnace companies, and one company tried to say we needed a new furnace. We called A-1 United Heating and Air, and they looked at our furnace and verified that we did not need a new one. They saved us thousands of dollars by not trying to charge us for things we didn't need. They also didn't charge us a dime for a second opinion. They looked at an old leak and made sure our air-conditioner was working correctly. Nothing needed to be done, and we were very pleased with their service. They answered all of our questions right away.