Heating Systems

Most HVAC technicians can replace a part. Fewer can look at a heating system and explain exactly why it's losing efficiency, or catch a combustion problem before it becomes a safety issue. This course closes that gap. You'll start with gas furnaces, covering how fuel burns, how heat transfers to indoor air, and what separates a standard 80% AFUE system from a high-efficiency condensing unit. From there you'll move into hydronic systems, heat pumps, and electric heat — each with its own operating logic, efficiency profile, and failure modes. The final unit is combustion analysis. This is where the course gets practical in a way most training skips. You'll learn what CO, O2, CO2, and stack temperature actually tell you about what's happening inside a burner, and how to read those numbers together to confirm that a gas appliance is safe and tuned correctly. That skill matters on every service call involving gas-fired equipment — furnaces, boilers, and water heaters alike. By the end, you'll have a working mental model for every major heating technology in residential and light commercial buildings. You'll know how each system produces heat, how to evaluate its efficiency, and how to identify when something is wrong. The content builds unit by unit, so prior HVAC coursework helps, but the concepts are explained from the ground up.