Need to replace the HVAC

I’ve never been the type of person to spend currency on replaced or extra things that come with a certain product or service, but for an example when I purchased our automobile last year there were so various add-ons and extras that I could purchase for our new automobile for an extra few hundred dollars and i opted out because i didn’t see the sense of having to have a sunroof or leather seats or seat warmers. All this extra overpriced add ons is just another expense that I will have to worry about if it ends up breaking. An example of this was when I had our heating and cooling method took care of by our local Heating as well as A/C specialist. I have our specialist come over at least twice a year just to make sure that our heating, ventilation and air conditioning method is now working officially. When I had our busy maintenance appointment with our Heating as well as A/C specialist, he tried to sell myself and others other services that they offered. For example an extra maintenance run schedule for them to come and take a look at our unit and an add on whole-condo air purifier for our heating ventilation and cooling system. To be honest I absolutely didn’t want to have an add on whole-condo air purifier to our Heating as well as A/C system. This was going to be a thousand dollars added to our heating and cooling maintenance bill! Plus if anything went wrong it would be another maintenance call that I would have to make resulting in more currency and maintenance fees. This add on whole-condo air purifier extra maybe beneficial for people who are not cheapskates like me, however I would rather spend our currency on other things and not on our Heating as well as A/C system. This decision could result in a negative outcome for myself and others in the near future however at the moment I do not guess it’s necessary for our home.