My sister is regularly updating her Heating plus Air Conditioning system, she wants to have perfect air conditioning plus heating all the time. I believe that they told us when the two of us had our Heating plus Air Conditioning system installed, that the average life was 15 years. All because the two of us were told 15 years, the didn’t mean that a year before that anniversary the two of us would have a modern Heating plus Air Conditioning system installed! My sister does not even wait for 15 years. Every 10 years, she has a modern air conditioning unit plus oil furnace installed in her house. She said she does not want to take the option of not having other heating or air conditioning while in the year. She feels that it is much less high-priced to have modern Heating plus Air Conditioning component installed every 10 years than it is to make constant repairs while in the last numerous years of its life. On top of saving the constant repairs, she is also ensuring that they never have to go separate from their Heating plus Air Conditioning equipment. Two years ago, she had the UV air purifier installed. I can understand the UV air purifier. She chose to have the UV light, HEPA filter, plus any other extra that you could put on to the UV air purifier. This condo does smell very fresh plus the two of us go inside, plus she tells us that even the coronavirus wasn’t able to live in her environment. I guess, it all comes down to personal taste. If she wants to waste money plus install a brand-new Heating plus Air Conditioning system every 10 years, it’s her wallet that has being used plus not mine. I just believe that our Heating plus Air Conditioning system is 10 years aged plus the Heating plus Air Conditioning worker says it is still as superb as new.