Quote:
Originally Posted by jrref
You realize those mini split systems that everyone is installing are variable speed units with many of the same "fancy" parts. It's just variable speed main heatpumps are somewhat new and many don't understand the technology.
Those mini split systems initially had a lot of that "fancy" circuit board failures related to power surges. Now everyone comes with a surge protector to fix that issue. Same with newer variable speed heat pumps.
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I had a Samsung minisplit in my shop building and after 5 years a circuit board failed. I figured no big deal. I swear I have my doubts if one existed on the planet! My HVAC guy recommended going with a Daikin to replace it and they required a hardwired surge protector at the service disconnect in order to maintain warranty. So far, so good after 3 years.
Variable speed systems do save energy but given the cost upfront, who knows for sure if the savings will catch up.