Eric Aune breaks down how a hydronic radiant system turns a concrete slab into both heating and cooling for a building. He walks through the manifold, PEX tubing loops, and glycol fluid that circulate water through the floor, then explains the shift from an electric boiler to an air-to-water heat pump as the system's energy source. Aune covers supporting components like the buffer tank, outdoor sensor, and ECM circulator that keep everything running efficiently, noting how the same core concepts have carried over from decades-old hydronic setups even as the technology gets smarter and more connected.

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