This 2026 DIY cold-climate mini split comparison looks at Zone Air and MRCOOL...

https://yenkee-wiki.win/index.php/What%E2%80%99s_the_Catch_With_%E2%80%9CHardware_Only%E2%80%9D_Mini_Split_Pricing%3F

This 2026 DIY cold-climate mini split comparison looks at Zone Air and MRCOOL for low-temperature heating, sizing, line-set kits, and install effort. Some models are rated to -22°F, but check electrical needs and included parts before buying.