Central Air Conditioning Unit FAQs

Hey, There

So, - We have central air conditioning unit question? I lists some of the question; I believe we’ll ask ourselves … yes, I’m Professor Xavier.

I spend some hours reading your mind and answering this question. I also gather all the MOST WANTED QUESTION in the FBI datable and track them down. :)

If I miss THE MOST WANTED question you have the opportunity to ask. Please, DO NOT repeats the same question. I’m human; I don’t wanna waste time deleting a question.


Did I miss a Question?

If I did, our mission -

  • Search the links from old question and continue from there.



Search Other Question




Huhh – You still could not find the answer 2 your question :(


I Need Central AC Answer


(I deactivate the forum … I’ll clean the mess first)


Our 2 rules


  • No DIY or FIY questions
  • Provide detail – a lot of detail to your question




The link below is for general question only. Here is the link for the central air conditioner problems:


central air conditioning problems



The Most WANTED Questions


Question: How much should we pay for specific repair and replace part?

Answers: ohh … that question. Here is a links - Central air conditioner cost for SC

Question: Where is my central air conditioner filter?

Answers: The air conditioner filters are normally located in return duct grills, in the air handler or somewhere in the indoor furnace unit.

This is a return vents, it's on the ceiling or against a wall.

Below is the furnace unit, the filter ALWAYS near a blower house (fan) compartment. Its not within the burner, heat exchanger compartment. it could also be on top of furnace, within a slot. Read how to change air conditioner filters.

Answers: I’m not making this up. This is one of the questions. Ac filter catch all these unseen foreign object fly over our head. It also helps central air conditioning units.

Most people don’t know what it is. I had written page on the purpose of HVAC filters.

Question: How much does a central air conditioner cost?

Answers: I had written estimation for these subjects. This is estimation of how much central ac cost.

Question: Where is the central air conditioner coils located?

Answers: In split central air conditioner units. The evaporator coils are located indoor with the blower, heat exchanger and expansion device.

Question: How important to DO regular maintenance on central air conditioning unit?

Answers: Let’s put this way. If we don’t maintenance our central air unit, someone will be very happy. Guess, who is happy? Not us.

Read more on central air conditioning maintenance

Question: How do I add air conditioner Freon to my central air conditioning units?

Do we know what we need:

R22 or 410A or how much FREON for our AC unit?

Answers: Can we answer the question above? central air conditioner is not cheap. If we make mistake, I’m sure tech will be happy to clean the mess afterward.

We can kill 7 or more thousand dollar equipment if we did it wrong. It's best not to add Freon to our central ac unit without understanding the full detail.

To buy AC Freon, we need to be certified and to add Freon to central air conditioning unit is throwing money away.

Question: What size central air conditioner units do I need?

Answers: To have the proper size central ac units. Contractor or you need to do a load calculation. Contractor does the calculation by paper or calculation software. The location of condenser coils is out door. It’s in square or around shape frame. The Ac compressor is within the condenser units. In package central air conditioning units all the parts are outside, and the duct works are inside.

Question: How do I replace my central air conditioner units?

Answers: This is one of the top question. I dislike being negative, but I’m positive, we wouldn’t spend two years in school if everyone could replace their own central air units.

To replace your central air conditioner units, you need two years of technical school and some more years of experience and you’ll need contractor license or you can just pay contractors.

Question: What does air conditioner filter do?