From 2018 through 2022, after all rebates I spent roughly $11K doing three separate zones in my condo which previously used electric resistance baseboards for heating. I chose to do separates rather than one giant unit outside powering three indoor headunits because the separates can throttle down lower. Plus, if one requires maintenance or dies completely I don't lose heat for my entire unit. So there's redundancy.

• Mitsubishi MUZ-FH12NA/MSZ-FH12NA (2018)
• Mitsubishi MUZ-FH09NA/MSZ-FH09NA (2019)
• Mitsubishi MUZ-FS06NA/MSZ-FS06NA (2022)

I had a $450 electric bill keeping my entire unit no warmer than 64°F with electric resistance baseboards. My most recent electric bill has been around $245 to keep my entire condo between 67°F to 70°F 24/7 with the minisplits.

That quote is insane though.

If you do decide to get minisplits installed see if the town you live in participates in "municipal aggregation". This is the process by which a municipality purchases electricity in bulk from a competitive supplier on behalf of the residents and businesses within the community.

If this is not possible you can also sign up through a third party supplier like Constellation to lock in your supply rate.

If you are lucky enough to live in a town that has it's own electric company you're all set as you are paying half the rate as someone who has National Grid or Eversource.