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      Best mini-split for a home office

      Usually a 6,000 BTU mini-split for a office of about 200 sq ft in a mixed climate. A home office is small but busy: computers and monitors add heat all day, and you need quiet for calls.

      What size for a home office?

      Small office ~120 sq ft

      Office ~200 sq ft

      Large office or studio ~300 sq ft

      Assumes average insulation and a 8 ft ceiling, typical for a home office.

      Best 6,000 BTU mini-splits for a home office

      What to look for

      Size it for your home office

      Pre-filled for a office. Adjust the area and pick your city.

      Your space
      Your climate
      Mini-split size
      9,000 BTU
      Central / ducted size
      1.5 ton
      Cooling load
      6,900 BTU/h
      Heating load
      3,000 BTU/h

      See 9,000 BTU mini-splitsSee 1.5-ton central heat pumps

      Rule-of-thumb estimate: cooling follows the ENERGY STAR room sizing table, heating uses typical BTU per square foot for the climate (NOAA 1991-2020 heating degree days). For a whole-house system, ask your installer for a Manual J load calculation.

      More detail

      Top 5: most efficient overallHighest seasonal cooling efficiency (SEER2), then heating (HSPF2)
      #ModelSEER2EER2HSPF2COP at 5°F
      1Carrier 37MPRAQ06AA335.117.515.62.00
      2MDV MOX430-06HFN10-M1H35.117.515.62.00
      3Mainline ML06HP230CALH-Oalso sold as 2 other model numbers35.017.415.62.00
      4Midea MO1SS-H06B-2Aalso sold as 6 other model numbers35.017.415.62.00
      5Mitsubishi Electric MUZ-FX06NLHZalso sold as 1 other model number35.021.513.02.38
      Top 5: best for cold wintersCold-climate certified, ranked by efficiency at 5°F
      #ModelSEER2EER2HSPF2COP at 5°F
      1American Standard / Mitsubishi Electric NAXSPH06B112A32.219.111.92.46
      2Mitsubishi Electric MUZ-FS06NAalso sold as 1 other model number32.219.111.92.46
      3American Standard / Mitsubishi Electric NAXSPB06B112A32.219.110.92.46
      4Mitsubishi Electric MUZ-FS06NAHalso sold as 1 other model number32.219.110.92.46
      5MDV MOX230-06HFN10-M125.718.112.82.40
      Top 5: best for hot summersRanked by EER2, the efficiency at 95°F
      #ModelSEER2EER2HSPF2COP at 5°F
      1Mitsubishi Electric MUZ-FX06NLHZalso sold as 1 other model number35.021.513.02.38
      2American Standard / Mitsubishi Electric NAXSPB06B112A32.219.110.92.46
      3American Standard / Mitsubishi Electric NAXSPH06B112A32.219.111.92.46
      4Mitsubishi Electric MUZ-FS06NAalso sold as 1 other model number32.219.111.92.46
      5Mitsubishi Electric MUZ-FS06NAHalso sold as 1 other model number32.219.110.92.46
      Running cost of a typical 6,000 BTU unit$113-$217/yr

      If used like living space all year; part-time use costs proportionally less.

      Questions3
      What size mini-split do I need for a home office?
      For a office of about 200 sq ft, around 6,000 BTU in a mixed climate like Atlanta. Small office: 6,000 BTU; Office: 6,000 BTU; Large office or studio: 9,000 BTU. The table above shows how this changes in hot and very cold climates.
      How much does it cost to run a mini-split in a home office?
      A typical 6,000 BTU unit costs about $131 a year in Phoenix, $113 a year in Atlanta, $217 a year in Minneapolis if used like a living space all year. Part-time use costs proportionally less.
      What is the best mini-split for a home office?
      For a 6,000 BTU unit, the Carrier 37MPRAQ06AA3 ranks first on most efficient overall. All rankings use ENERGY STAR certified ratings.

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