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Eric and Andy dig into their shared frustration with combi boilers in North American homes. Eric, who spends much of his time servicing and diagnosing boiler systems, argues that combi units get treated as a one-size-fits-all solution when they're really better suited to small, occasional-use spaces like lake cabins.

He walks through the mechanical strain of constant ignition cycling for domestic hot water, the added failure points compared to a simple heating boiler paired with an indirect water heater, and why oversizing is nearly universal in the combi installs he encounters.

Andy shares similar experiences from his own service calls, and the two compare notes on component reliability, water quality issues, and how they each frame the tradeoffs for customers weighing combi systems against more traditional setups.

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