If you’re looking to DIY a multi-zone mini split in 2026, Zone Air and MRCOOL...

https://beausuniquechat.zenbloomer.com/posts/mrcool-fixed-line-set-sizes-16-25-35-50-ft-which-one-do-i-pick

If you’re looking to DIY a multi-zone mini split in 2026, Zone Air and MRCOOL stand out for a couple of practical reasons. Zone Air’s systems offer cut-to-length line sets, which means less waste and easier installation in older homes with tricky walls