I am a single mom and I have to be able to trust the companies I use to do repairs for me. This is one that I DO! a few years ago I had them install central air in my home. The istallers did a wonderful job. They even checked out the furnace and found the heat exchanger was cracked. This crack could have let CO into my home if I had used the furnace. I had justed purchased the house and had a home inspection done before I purchased. The inspector missed the crack ! I had Zenner & Ritter install a Heil furnace that work great! These guys are the BEST!