I signed up for Geisel's service contract for my home approximately three years ago. They come out to my house and perform a thorough inspection of my central air in the spring and my furnace in the fall. Every time they come, the workers are courteous, they put paper shoe covers on and they explain everything that they do. Their rates seem to be very reasonable and they are very prompt. Last Sunday, my air conditioning went out, I called on Monday and they were able to come out Tuesday morning. Within one hour, they had the problem fixed. I highly recommend them.