The same $800 repair is quoted at $3,200 by the next company — for the exact same part and labor. The HVAC industry runs on homeowner ignorance. These 40 prompts end that.
Before you buy anything, start with the research. Both PDFs are built from Stanford, EPA, NREL, and Lawrence Berkeley Lab field research — not marketing copy.
Download Both Free →You don't need a license to ask smart questions. The homeowners who save the most money and breathe the cleanest air aren't the ones who know the most about HVAC — they're the ones who know how to ask the right questions.