By far the best customer service on HVAC equipment in Maryland. I had the power company offer to do a HVAC upgrade on my commercial property to 25% of the cost. The company that manages this work for the power company hired another HVAC that claimed to be a "Air medical professional". After a complete disaster of them attempting to do an install and damaged my roof and my building they where thrown off the job and I threated to sue everyone. The power company contacted Tristate to come handle the problem. Brad their sales guy came out and went threw everything with me of what they where going to do, how they where going to do it. Then had their manager Barry come out and go over everything. They sent out a top notch crew. They replaced 3 units and installed new duck work to make the new system work. The crews where professional. They even followed up after the job was complete to make sure we where happy. 9 months later I had a factory defect failure of one of units. They came out diagnostic it. Got the part warranty and came out and replaced the whole coil free of charge. Which was no small task as it was in the ceil with limited access. I will only recommend them for any HVAC work you need done. Their tech Nick is by far the best HVAC guy I have seen. He almost instantly can figure out a problem with a unit.

Brian was very good!

I have used Tri State for more than 15 years. Great Service, quick response to calls and professional technicians who are on time and very informed

He was professional and helpful

This is the first time I use TriState, Frank came on time and gave the complete plumbing inspection. I will give them 5 stars.