The most expensive filter in the world...
...is the one you forgot to change. One completely clogged filter can cost you a new A/C unit on a hot summer day.
You are busy: you have a business to run, customers to serve, payroll to meet, reports to fill out, orders to send, etc. It is so easy to forget how long it’s been since you changed those filters, especially if they are on the roof.
Call Micro Shield for a free inspection. A trained technician will come put and inspect your A/C system free of charge. He will report to you anything that he finds wrong, and you can then call your A/C man to fix it before it becomes a major problem (hopefully). Finally, he will give you a free quote, and you will be amazed at how inexpensive it is to have your filters on a computerized system that will insure that you never have a clogged filter causing damage to your expensive system.