Sizing a HVAC system properly is a job that HVAC contractors know how to do. To calculate the load on the HVAC system, specialists use tables that incorporate insulation values, air leakage, window quality factors and the surface areas that envelope your home.
All these factors are different from one house to another. A professional would never ignore them and only calculate the load based on the square footage of the house. Such an evaluation cannot be accurate and you could invest your money into a HVAC Denver system that would not be sized accordingly and could not meet your requirements.
Proper sizing can only be determined when you know exactly how much air flow you need to have your air conditioning system operating efficiently, for instance. Otherwise, you could see it often freezing up. This would cause utility bills to become excessive, air conditioning repairs to cost too much, and the compressor to fail prematurely.
To avoid such situations, the best move to make is to contact a Denver air conditioning repair firm and trust them with the proper sizing of your installation. When this work is done by professionals, you can expect it to be done well.