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[tends2dogs]

We have something similar going on in our "down south" home.  Our AC unit is old, but functions well.  We get yearly checks and the guy always says if it works, why change it out?  He sells AC. 

Our main question to him was how soon could we get a replacement if this one goes out?  He said less than a week.  That is fine with us so we are going to stick with Old Faithful for now.  LOL

As far as the energy savings and lower utility bill, I'm not buying that sales pitch. We had an old refrigerator repaired to use in our garage.  I asked the repairman if the thing was an energy hog compared to the newer ones.  He just rolled his eyes and said to keep it.  He said it was better than anything you could buy now.  

Do what you have to do.  The other poster that said their DH was an HVAC guy and their unit is 22 years old speaks volumes to me.

Nothing lasts like the stuff made years ago.  My sister still has a 30 year old GE refrigerator that is going strong. 

[Imaoldhippie]

@wenfen ...............This is just me but a 28 year old system will sooner than later bite the dust, to say nothing of being less efficient.  If it were me I would replace it now instead of waiting until some 40 below day and go without any heat, and the installers are busy and you have to wait days or weeks.

[chlema]

@tends2dogs My a/c is 22 yrs. old, a Trane - that keeps on running.  My electric bills this summer were much less than my neighbors who have newer units but maybe they keep their house cooler than I do - keep mine set at 74 deg.  I know I will have to replace it soon but I'm told the new Trane units are not near as good as the older ones.  All units of today will never last so long.  

[Sooner]

Anything like that replace now if you can. You never know when the supply chain will be interrupted and you may not be able to get one at any price.

Look for bids from two or three suppliers and get a good brand.  Look up ratings online. Also look carefully for company ratings and look for a company that has been around awhile and gets good reviews.  Check on service contracts for yearly maintenance and such too.  And BE SURE YOU HAVE A CARBON MONOXIDE alarm if it is gas.  

[SilleeMee]

Replacing an old furnace/ac will save you money in the long run. Today's appliances are energy-efficient so the savings will show up on your utility bills month after month. I would replace an old system asap.

Put more insulation in your attic to save more money.

[D Kay]

My 15 year old air conditioning unit went out this summer. It took 2 weeks to get the parts because they were no longer kept at the company's ware house.  They said to replace the gas furnace and a/c unit it would take months because of their waiting list.  A new unit would be more efficient.  Do it while the weather is mild.

[Desert Lily]

@wenfen   Regulations have caused accepted AC refrigerants to change over the years. I'd ask if the refrigerant for the old AC is still available and for how long.

[Meowingkitty]

I would replace it now before the prices go up. While we don't have a furnace (we have a heat pump) our a/c runs from March and is still running now into October.  (Were in Arizona). Our a/c units typically last 12 - 15 years sometimes longer with good maintenance. 

[Kachina624]

Big pro is you won't be sitting in a freezing house on the coldest day day of winter waiting for a repairman who's  booked til next Wednesday, when your aging heater finally conks out.

[Spacrazy]

@wenfen:  I could have written your post this time last year and but now I would pay that money for the piece of mind it gave me. I have never regretted this purchase. Even the installation was easy ~ they were in and out ~ no fuss no mess left.  Money well spent.