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  • Wright Mechanical Services Inc.
  • 906 Ulrich Ave Louisville, KY 40219

HVAC Professional

We service and repair all brands of heating and air conditioning equipment

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30 Years of experience in HVAC Industry

We do it the Wright Way

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Free Estimates and Upfront Pricing

Family owned and operated providing honest, reliable, quality work, and quality service by experienced HVAC technicians

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FAQ Mini-Splits


How do I choose the proper size ductless or mini-split HVAC system?

The size you need will depend on many factors such as how tall the ceilings are and how insulated the home is but here is a general guide. It is important to remember that ductless or mini-splits will cool or heat a larger area than portable or window air conditioners per BTU capacity. If you have any doubt as to what size you need you should contact a HVAC professional.

  • 9,000 BTU’s: 350-400 square feet
  • 12,000 BTU’s: 450-600 square feet
  • 18,000 BTU’s: 650-900 square feet
  • 24,000 BTU’s: 950-1150 square feet
  • 30,000 BTU’S: 1200-1350 square feet
  • 36,000 BTU’s: 1400-1600 square feet
  • 48,000 BTU’s: 1700-2300 square feet
  • 60,000 BTU’s: 2400-2700 square feet


How does a ductless or mini-split system work and how is it controlled?

Ductless or mini-split heating and cooling systems are reversible, two-way heat pumps that transfer heat between outdoor and indoor air by compressing and expanding refrigerant. These systems collect heat from outside the house and deliver it inside the house on the heating cycle, and reverse the process on the cooling cycle. These systems are convenient because the temperature can be controlled for each room depending on the occupants comfort level. The system is controlled via a remote control that changes temperature and between heating and cooling mode. Wall-mounted and wi-fi enabled controls are available.

Does a ductless or mini-split system need regular service or maintenance?

A ductless or mini-split system requires basic maintenance to ensure that it is working at its peak performance. Regular maintenance by a professional is recommended. In most cases, maintenance is limited to checking and replacing indoor filters and keeping the outdoor coils clean and free of debris.