There are several reasons we prefer Liberty products here at 7K Mechanical. One of the main reasons is because I have personally been to the factory, here in the Texas and I have met the people who build them. I have seen the quality of their work and the pride they put in their product.
I also like that they stand behind there products. They have the best warranty program I have seen in my 30+ years in this business. Liberty has an available 10-Year Parts and Labor Warranty at a very reasonable price. This warranty is not a 3rd party deal, it is covered by Liberty themselves. That speaks volumes to me.
Liberty has also made many improvements on their products that make them easier to service and to install. That tells me that they care and are focused on improvements.