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Plastic card - cheat sheet for HVAC techs - featuring compressor scenarios, color-coded PT chart for common refrigerants, supply duct CFM calculations, return grill sizing guide, and electrical wire sizing.
Etsy offsets carbon emissions from delivery and packaging on this purchase...
Etsy offsets carbon emissions from delivery and packaging on this purchase...
Sorry, this item does not deliver to Hong Kong.
Message World of This seller responds within few hours..
WorldofHVAC made this item with help from Vistaprint, Waltham, MA... 51 reviews 5 out of 5 stars..
Great little card fits in your wallet for reference good quality...
Every I pull them out to use it, someone else wants it.
My nephew loved it... stager nonie 28 Dec, 2022..
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