SMSI Inc

When temperatures drop, a reliable heating system isn’t a luxury — it’s a necessity. At SMSI Inc., we specialize in fast, effective repairs for all major furnace brands, including gas, electric, and oil systems. Our NATE-certified technicians diagnose issues quickly and provide upfront pricing so you never face surprises.

Common heating problems we solve include uneven heating, strange noises, short cycling, pilot light issues, and complete system failure. We also offer preventive maintenance plans to keep your furnace running efficiently all winter long. For homes and businesses in Denver Metro, our emergency repair service means you’re never left in the cold.

Why choose us? Because we treat every home like our own. We use high-quality replacement parts, offer warranties on all repairs, and take the time to explain your options. Whether it’s a simple thermostat fix or a complete heat exchanger replacement, we handle it with the same care and professionalism that has defined us since 1995.

Beat the summer heat with efficient, dependable air conditioning solutions from SMSI Inc. We install, repair, and maintain central AC systems, ductless mini-splits, and heat pumps for both residential and commercial properties in Denver Metro. Our team works with leading brands to ensure long-lasting performance and energy savings.

If your AC is blowing warm air, making grinding sounds, or running constantly without cooling, our diagnostic process gets to the root cause fast. We also perform complete system evaluations to recommend whether repair or replacement is more cost-effective. For new installations, we help you choose the right size and SEER rating to maximize comfort while lowering utility bills.

All our work comes with a satisfaction guarantee. We also offer seasonal tune-ups that prevent breakdowns and improve airflow. From window units to whole-home central air, SMSI Inc. delivers cool comfort when you need it most.

Hot water and radiant heat are essential for comfort and daily life. SMSI Inc. provides complete boiler and water heater services across Denver Metro, including repairs, replacement, and annual maintenance. We work on conventional tank water heaters, tankless systems, and all boiler types — steam, hot water, and combi units.

Signs you may need our help include no hot water, rusty water, strange rumbling sounds, or leaking around the tank. For boilers, we troubleshoot uneven heating, banging pipes, and pressure problems. Our technicians are trained to safely handle gas lines, electrical components, and hydronic systems.

We also offer high-efficiency upgrades that can reduce your energy bills significantly. Every installation includes a full warranty, and we help you navigate available rebates. With SMSI Inc., you get reliable hot water and cozy radiant heat year-round.