I had problems with my HVAC system in June. Several attempts to fix it and a couple of service companies didn't resolve the issues.HSA advised me to find someone that was in my area that would honor their service . I found a company , but they determined the a/c unit and compressor was gone. They trouble shoot different scenarios, but nothing helped. I had to replace the unit,. The system is working flawlessly now thanks to HSA would highly recommend them to family and friends or anyone that needs outstanding warranty coverage .