Welcome to Grassland LLC - Heating and Cooling. Proudly servicing Yankton, Vermillion, Sioux Falls and surrounding South Dakota

Commercial Services

Commercial HVAC Services That Keep Your Business Running Smoothly

Your business relies on a comfortable and controlled environment to keep employees productive and customers satisfied. We offer full-service commercial HVAC solutions including system design, installation, repair, maintenance, and upgrades. Whether you manage an office, retail space, restaurant, warehouse, or multi-unit property, our experienced technicians provide tailored solutions to meet your building’s unique heating, cooling, and ventilation needs. We work quickly, safely, and with minimal disruption—so you can stay focused on running your business.

Why Choose Us for Commercial HVAC Work

Commercial HVAC systems are complex, and downtime can mean lost revenue and unhappy occupants. That’s why we deliver fast response times, expert diagnostics, and proactive maintenance to prevent issues before they start. Our team is fully licensed, insured, and trained to handle everything from rooftop units and heat pumps to building automation systems and zoning controls. We understand the demands of commercial operations and work around your schedule to provide efficient, dependable service that keeps your building comfortable and compliant.

  • HVAC System Installation
  • Repairs & Emergency Services
  • Rooftop Unit (RTU) Services
  • HVAC Maintenance Contracts
  • Ventilation & Indoor Air
  • Ice Machine Cleaning

Frequently Asked Questions

Do you offer preventative maintenance plans for commercial systems?

Yes, we provide customized maintenance contracts to keep your systems running efficiently and reduce the risk of breakdowns.

What types of commercial properties do you service?

We work with offices, retail stores, warehouses, restaurants, medical facilities, and more.

Can you replace or upgrade old commercial HVAC systems?

Absolutely. We specialize in system upgrades for better efficiency, zoning, and indoor comfort—all tailored to your building's needs.

Do you provide emergency repair services for commercial clients?

Yes, we offer 24/7 emergency HVAC repairs to minimize downtime and restore comfort quickly.