We bid out the installation of an A/C unit for our home 5 years ago. After many proposals, we went with James Heating and A/C due to price and reputation of good service. In addition, most other companies specified a 3-ton unit for our house; James specified a 2.5-ton unit. They assured us it would be beneficial because the unit would be able to keep the house cool and would go through fewer on-off cycles.
The installation went well.
Since then, we have regularly had them clean and inspect our furnace and A/C unit. I have seen the before and after views, and it is obvious that they do a good job with maintenance.
In addition, we were assisted in finding problems within our system, such as improperly connected ductwork inside the floors and ceilings, and in selecting conventional and electrostatic air filters.