Oct 30, 2026
Upgrading from an 80% furnace to a condensing model means the old metal flue cannot be reused — and if a water heater shared that flue, it now has a problem of its own.
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Oct 30, 2026
Upgrading from an 80% furnace to a condensing model means the old metal flue cannot be reused — and if a water heater shared that flue, it now has a problem of its own.
View details
Oct 26, 2026
The gas valve is the most expensive part in the ignition path and the one most often replaced unnecessarily. One measurement tells you whether it’s actually at fault.
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Oct 23, 2026
Three flashes means something different on every brand. Here’s how to read your board’s code correctly, what each fault category actually points to, and when the board itself is the problem.
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