About Us

M&S HVAC was built with a simple mission: deliver dependable, honest, and high-quality HVAC services to homes and businesses in South Dakota. Moses Waldner started the company with years of industry experience and a desire to provide personalized care that large, corporate providers often lack.

We understand how important it is to have a heating and cooling system you can trust—especially in our unpredictable Midwest weather. That’s why every installation, repair, and maintenance visit we make is done with precision, transparency, and your long-term comfort in mind.

Whether it’s a small furnace repair or a lite commercial HVAC system installation, we approach every project with integrity and a commitment to excellence. It’s not just about doing the job—it’s about doing it right.