Having worked as an a/c rep for 15 years, I have seen customers attempt to do a/c installs and need to do better, adding more challenges to their quest for quality indoor comfort. You must do your due diligence regarding a significant investment, such as buying a new air conditioning system. Whether you realize your need for a new system during an a/c repair or want to decrease your carbon footprint by enhancing the efficiency of your system, having your new system professionally fitted will establish that it is performing optimally from the first day of use. An a/c workman is trained to calculate which system will work best in your home. Some factors affect the calculation of the size of the unit to the size or needs of your home. Getting a wrongly sized system would affect the effectiveness of the unit. We would know the SEER rating of a particular unit and how it would fit and work in your home. The professionals at the air conditioning company are trained to assist the customer in finding the most suitable quality HVAC equipment and follow up with the requirements needed for a/c care. Another reason you should let the professionals handle the fitting of your cooling products is the service guarantee. Professionals abide by the quality of their work and equipment by offering service guarantees. When we use washable filters for the air conditioning filters, we will advise on independently cleaning them after every month or two, or we can take up the task ourselves. We train to ensure that when we install any unit, including a dual fuel system, we promise efficiency and longevity so that you do not have to worry about prematurely replacing the air purification system.