I installed a DIY mini-split system and compared three popular options: TOSOT, MrCool, and Della. Each has strengths and weaknesses—MrCool is easy to charge but expensive, Della is budget-friendly but inefficient, and TOSOT delivers the best mix of efficiency, features, and value. In this project, I’ll show you the complete install, step-by-step, and explain why I chose TOSOT over the others.

What you’ll see in this video:

• 📦 Unboxing and mounting the indoor unit cleanly

• 🔧 Drilling, line sets, and electrical connections done right

• 🌬️ Why the TOSOT’s ERV fresh-air system is a game changer

• 💡 Mistakes I made (and fixed) so you don’t repeat them

• 🧰 How I handled line-set mistakes and the tools that saved the day 

• 💰 Total cost, time invested, and what I’d recommend
  
  

Whether you’re finishing a garage, upgrading a three-seasons room, or adding comfort to a barn or shop, a DIY mini-split can be a cost-effective solution that boosts your property’s value. By the end, you’ll see exactly how to install a system yourself—and know which unit gives you the best results for comfort, efficiency, and long-term savings.