I hired the staff of One Hour Heating & Air Conditioning to put in a whole house air filter and to also do some works on the pipes of my heating unit. I have used them multiple times because I am on their plan for annual service. I would say that the staff is professional and friendly. I think that I would recommend them to other people. Since they have been servicing my units for years, there's no reason to switch to another company. The only issue I have had is that the staff hasn't been great with communicating with me in terms of coming out for an appointment.