HVAC & Plumbing Calculators
2 ToolsFree engineering-grade material calculators built for American jobsites. Solved in standard US retail packaging, ASTM yields, and nominal physical dimensions.
Mini-Split BTU Sizing Calculator
Size your mini-split AC unit by US Climate Zone (IECC Zones 1-8), ceiling height, sun exposure, and room type.
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Sump Pump GPH & TDH Sizing Calculator
Find the correct sump pump HP and GPH using vertical lift, horizontal run, elbows, and water table severity inputs.
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