HVAC Systems
Why I Check the Furnace Filter First: The Ripple Effect of Neglect
Before I open panels, before I pull out meters, before I start talking about compressors or heat exchangers, I check the furnace filter. Every time. Not because it’s exciting — but because that one cheap, forgotten component causes more downstream damage than almost anything else in an HVAC system. The
January 27, 2026
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