Is it important to have a matched system?
Imagine you've just purchased a new car. Your imagining yourself having a great, reliable and fuel efficient future with it. However, when you get to the showroom to pick it up, you find out it has an old worn out engine under the hood, or a transmission that has many miles on it. Would you still buy that car and expect reliability and fuel efficiency out of it? Would you feel comfortable and safe taking your family in that car, let's say, on a trip out of state?
Many people think it's o.k. to mix and match components on an air conditioning system.
Your air conditioning system is designed to work as a matched set. If not, operation of that system will be unreliable, inefficient, and probably unsafe.
The air conditioning systems here in South Texas work extremely hard for many months of the year. If not properly matched it will not work up to it's maximum potential and/or at an efficient level. This may also create unnecessary stress on the components in the system, and could result in premature failure. With increased complexity of todays air conditioning components, repair cost's are ever increasing. Why make your new unit work harder than it should?
Installing a complete matched system makes good all around sense. Of course, replacing just one piece of the system will save you money now. But it will decrease it's ability to provide you with greater comfort and energy savings in the long run.
Still interested in that beautiful car with the mismatched components in it?