My seasoned heating and cooling unit finally died on me. It had served us well so, I wasn’t too torqued about getting a replacement. Getting a new unit was well overdue anyway. The heating plus cooling unit has been doing a beautiful job for 18 years. It also still used R 22 refrigerant which will soon be illegal to produce. I figure I’m just getting a jump on all the heating and A/C substitutions that will happen after December 1, 2020. R 22 refrigerant will be extraordinarily overpriced once it is no longer manufactured. So, even if our heating and A/C unit wasn’t at the end of its usefulness, I’d substitute it. In order to do our part to get the most out of our current air conditioner, I decided to be proactive. There were 6 windows on the second floor which were not double paned. I brought in a girl to rip the oldest ones out. Then, she and I were able to get current windows in by the end of the morning. Now, the second floor is sealed tighter. I then went up to the attic as a heating and cooling tech suggested. Apparently, lots of people forget all the important heating plus cooling factors an attic presents. First, I inspected the ducts to see if they were sagging or had any gaps. I understand a condo can lose nearly 30 percent of treated air to air duct leaks. Pleasantly surprised, I found the air ducts to be in excellently great shape. Next, I went about heavily sealing around the perimeter of the attic and in between joists. The last thing I did to help our current heater and AC unit was to instal more R 60 insulation. I covered all of the older insulation with current rolls. Now, when our current heating and A/C unit with a SEER rating of 27 comes, our condo will be ready. I wanted to be sure I was leveraging the current heating and A/C efficiency by giving it a better chance to operate more effectively.