Johnstone Supply – Rapid City, SD

When Rapid City residents need heating or cooling solutions, they call Johnstone Supply. Keep your home comfortable year-round with our heating and cooling services. We install and service central air conditioning, furnaces, and heat pump systems. Regular maintenance can extend equipment life and improve efficiency. We are committed to delivering value and earning your trust with every interaction. We serve Rapid City and the surrounding South Dakota area. Customer reviews highlight our commitment to quality. We maintain a 4.1-star rating based on 13 reviews. Reach us at (605) 791-1602 for inquiries or to get started.