Level 9 Heating Cooling Plumbing

We are a locally owned heating and cooling team serving homeowners across St. Louis County, Franklin County, and the communities in between, including Washington, Missouri. Our roots extend to legacy HVAC businesses that have served the St. Louis area since 1975. Those businesses came together under the Level 9 name in 2019 with a shared purpose: to provide local homeowners with a higher standard of service built on experience, transparency, and follow-through.

When a heating or cooling system fails, we begin with a thorough evaluation rather than guesswork. We explain what we find, present clear options, and wait for approval before starting any repair or installation. Our licensed, background-checked technicians are extensively trained, and we service all makes and models of furnaces. We also size and install energy-efficient Carrier equipment according to manufacturer standards and industry best practices. Whether a homeowner needs a repair, replacement, or annual tune-up, we offer honest guidance about which option makes the most financial sense and provides the best long-term value.

Our work also includes high-performance cooling systems and indoor air quality solutions. Our technicians are trained and tested in indoor air quality theory, application, and product knowledge, allowing us to identify whether concerns are being driven by humidity, particles, odors, or another issue. We recommend solutions suited to the home and designed to integrate with its existing furnace or air handler. For homeowners interested in efficient heating alternatives, we also offer geothermal systems that use the ground’s stable temperature to provide consistent heating with lower operating costs than conventional furnaces.

Throughout every visit, we protect the home, maintain an organized workspace, and test completed work for performance and safety. Before leaving, we review what was done, answer questions, and make sure the space is as clean as we found it. Our goal is straightforward: provide clear information, complete the approved work properly, and help each homeowner make a confident decisions about lasting comfort.