Purchased 9 year old (all electric) designer. Over the next 1 1/2 years I added a water softener to the Nova water filters, drained the hot water tank (40 gal) [lots of white sand like stuff came out], added external insulation around the hot water tank, replaced the hot water heating elements (very corroded), added more insulation over the attic and garage, added Generac whole home generator, and replaced the HVAC with a high efficiency unit from Chuck Farrell.
Yes the Carrier HVAC unit was working fine. Why replace it? A) Technology wise HVAC units have greatly improved from those 10 years ago. B) Replacement on my schedule which allowed multiple quotes that varied widely.
Bottom line - reduced electric bill, very even temperature (heating/cooling), confidence in knowing home well insulated and potential unexpected problems are minimized. (Hot water heater is on the replacement to-do-list).
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