 0 Key Features of Mini-Split Heating and Cooling Systems 0 Key Features of Mini-Split Heating and Cooling Systems 0 Mini-Split Thermostat Tips to Save On Your Utility Bills This Winter 0 Mini-Split Thermostat Tips to Save On Your Utility Bills This Winter Alpine Ductless is a certified Master Installer with the Northwest Ductless Project. We proudly serve the Thurston, Pierce, Mason, Lewis and South King county areas. Our goal is to help you determine the best system for heating and cooling your home.