geothermal systems Keywords: Advanced Search McNichols HVAC Business Name McNichols HVAC Address 87339 W. 2nd Street O'Neill, NE 68763 Phone Number (402) 336-4824 or (402) 340-0310 Category Construction & Home Improvement Tags air conditioner repair, geothermal systems, heating, heating units, Holt County, Lennox, O'Neill