After hearing some strange noises coming from our AC unit, my wife and I decided to call a repair service for a free estimate. Noises can be a sign of problems and I knew it wasn’t a good idea to wait. Luckily, there are a number of HVAC repair services that will come to your home and provide a free diagnostic estimate. Many of these places are right here in our local neighborhood. My wife and I called one of these companies to check on the strange noise. After the technician spent about thirty minutes looking at our system, the guy gave us an estimate for the repairs. The problem wasn’t serious yet, but we needed to take care of the issue before too long. The technician gave us a coupon with the estimate. The coupon was good for 30 days after our service appointment. The AC repair company offered 20% off the price of the repair if we have the work completed within the 30-day time frame. The coupon is a clever and convenient way to get us to use their services, even if we find a cheaper price with someone else. My wife and I called a couple of different places after we received the estimate from the first company. They were right on target with everyone else’s prices, so I know we are getting a good deal. I think we will probably schedule the service for the end of the month. We should have the work done now when we can save a few dollars in the process.