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Viking Mechanical specializes in servicing and installing HVAC Equipment in both Residential and Commercial applications. At Viking Mechanical, we're your heating, air conditioning, and complete HVAC system experts. We provide heating and air condition solutions for commercial and residential customers. We can help you find the ideal solutions for your needs and budget.

With a wide range of products and services for all your home or commercial energy needs, from air conditioning to high-efficiency furnaces and geothermal systems, we've got a solution for you.
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Dedicated to indentifying our clients' needs and providing the best solution in heating, ventilation and air conditioning. Viking Mechanical is a Division of Smart Systems and Services Inc. Viking Mechanical is a family run and operated business. Randy and Dawn Smart, Kassandra McDuff and Lee Smart are the present owners of Smart Systems and Services Inc.
Answer: It is the amount of Heat required to change the temperature of one pound of water by one degree fahrenheit. Answer: The air cleaner should be checked and cleaned at least once every month or more often as may be necessary. Viking Mechanical offers a complete line of variable speed A/C, Heat Pump and Air Handler units.
As a family-owned and operated company, Randy has been doing business in Rapid City and surrounding areas since 1992! We specialize in servicing and installing HVAC equipment in residential and commercial applications. We offer the finest quality equipment and back it up with our quality guarantees.
The largest part of any home energy expenses comes from heating and cooling systems. In the typical household, heating and cooling systems consume nearly half of our energy budgets. Because of their impact, it is crucial to have an efficient and functional HVAC system. By effectively increasing the efficiency of your heating and cooling system, you can significantly diminish your energy expenses while improving overall home comfort and healthfulness.If your current HVAC systems aren't up to snuff, call or contact Viking Mechanical in Rapid City today.
Reviews (2)
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Nathan Carlson
Feb 24, 2021
Outstanding contractor that truly cares for their customers. Randy and his team were true professionals from quote to clean up. They installed two multi-zone Mitsubishi mini split systems in our home (2 Condensers/6 Indoor Units) and the units are amazing. The units are very quite and have a lot of built in technology we were not expecting, making them very efficient.

All we had was very expensive heater boards and absolutely no A/C. This system solved both of those problems and will most likely pay for it self from the winter energy savings! Mitsubishi has them listed as a Diamond status contractor which increases the warranty on all the units to 12 years. Highly recommend them and I would do business with again.
Nathan Oviatt
Feb 16, 2019
The very best! Randy made sure my furnace was operating safely, and bent over backwards to save me money. Highly recommend to anyone who needs home HVAC service. Professional and personal.