Guides

    Long-form buying research, organized by the questions buyers actually ask. Every figure is verified against source documents and dated.

    Can I DIY this?

    Ductless heating and cooling, explained

    Ductless heating and cooling: one system, both directions. Only 2 brands skip the vacuum pump; the rest need a licensed pro despite pre-charged claims.

    verified Aug 2026 · 10 min
    Cold-climate performance

    Do mini splits heat and cool? Capacity at 5°F

    Yes, mini splits heat and cool one room. A cold-climate model 'rated to −22°F' still loses over half its nameplate there, verified against NEEP.

    verified Aug 2026 · 7 min