We had a problem with our heat this week, and got a very fast response after calling JLI. Josh was able to fix the problem with our heat, and I was very impressed with the way they cleaned up after the job was completed, and waited to see if the unit was working properly before leaving our house. Another technician, Carlos, was very professional and courteous. This is not the first time we have used their services, and I would highly recommend for any HVAC issues.