Why can’t I use another HEPA air filter?

I was talking to the heating and air conditioning professional when she was at the house.

I wanted to know where I could buy a HEPA air filter for my A/C unit.

She told me I couldn’t use a HEPA air filter in my A/C unit. My air conditioner was too seasoned to fit a HEPA air filter! Only the newer various models of central air conditioner units were able to hold a HEPA air filter. The inner dimensions of the air filter compartment were too small for the HEPA air filter. The fan motor wasn’t strong enough to blow air through the air filter. I would need to do multiple updates to the air conditioner. By the time you added up the cost for the updates, it would be cheaper to purchase a new central air conditioner unit. I didn’t have enough money to spend my savings for the air filters plus the servicing. There was no way I could get a new air conditioner unit. She told me they had portable whole-house air purifiers, if I was really distraught about germs in the area. The portable component did the same thing as a whole-dwelling air purifications system. The only difference was; the portable component only covered the room it was in. I sat there in awe of what she was saying. I asked if she was sure a new central air conditioner component would be cheaper? She said it would be cheaper to get a new air conditioner component than to do all the updates. I told him to install the new air conditioner component so I could use HEPA air filters in the air conditioner unit.

commercial hvac provider