Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
As mentioned in a previous post, when you are purchasing an air conditioning system, you are purchasing the expertise of the installer as well as the equipment iteself.
If you are shopping for a DVD player and find the exact same model in two different stores at different price points, it is definitely beneficial to purchase the lower priced item, as the quality is exactly the same.
When purchasing an ac system, there are many tasks that must be perfomed in the field that can make-or-break an installation. As mentioned, if either system is installed properly, you will likely get years of satisfactory service.
You can spend a great deal of money on a cadillac system and have it installed miserably, or you can have a less expensive system installed perfectly. One way to verify the integrity of the installation company is to do a BBB search and also ask for the names and numbers of previous customers. I personally prefer to do the BBB search since I can find out about any previous complaints and, more importantly, how these complaints were handled.
The best of luck to you.