IECC Zone 4A (St. Louis); 5A (north)

Mini Splits & Heat Pumps in Missouri

Missouri sits at a climate crossroads — Kansas City and St. Louis see summers in the 90s with Midwest humidity and winters in the teens. The Ozarks (Springfield, Branson) are slightly milder. Ice storms are the real reliability concern.

Climate Zone
4A (St. Louis); 5A (north)
Cooling Degree Days
1,300–1,800
Heating Degree Days
4,500–5,500
Dominant Load
balanced

What Works in Missouri

Standard DIY 5th Gen covers most of Missouri. Northern MO and higher elevations benefit from hyper-heat class. Ameren Missouri and Evergy Missouri offer heat pump rebates, stackable with federal 25C.

MrCool DIY 5th GenMrCool Hyper Heat (north/higher elevation)

Missouri Rebates & Incentives

Missouri HEEHRA administered by Department of Natural Resources. Ameren Missouri and Evergy Missouri have direct rebate programs.

Major Utilities
  • Ameren Missouri
  • Evergy Missouri
  • Spire
  • Empire District Electric

Missouri Licensing & Install Rules

Missouri HVAC licensing is municipal. KC and St. Louis require master mechanical licenses. Homeowner DIY generally permitted on primary residence.

Top Missouri Metro Areas

We ship to every ZIP in Missouri. Largest metros where we deliver most often:

Kansas City, MO
Saint Louis, MO
Springfield, MO
Columbia, MO
Independence, MO

Recommended for Missouri Homes

Heat pumps and mini splits in our catalog that match Climate Zone 4A (St. Louis); 5A (north) conditions.

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