To install a HVAC unit you will have to consult a HVAC contractor. A well reputed contractor will be experts in the field and will help you install a unit that functions efficiently consuming energy at an optimum level. Before installing always try to collect as much information as you can relating to its pros and cons. It is very important that you inquire about the efficiency rating of the unit before installing it. A higher efficiency rating is very important as it can help you lower your energy bill. The US government is now keen on imposing a minimum efficiency rating so that it will help the consumers make an informed decision. So always consider the efficiency factor and try to opt for a higher efficiency unit. Even if they are priced high the amount will eventually pay off from energy savings you are going to make every year.
There are various models for this unit in the market. You are free to choose any of them for your house though it is not going to be an easy process as you are not aware of the right and the most suitable one for your house. That is why it is recommended that you seek the advice of a professional. A reputed HVAC contractor will help you in making the right decision. The capacity and the size of the equipment is a very important factor to consider while making your choice the right size can be determined only by a professional.