Two field-grade calculators built around ACCA Manual N and ASHRAE service-life data. Sized for commercial buyers — offices, restaurants, retail, light industrial, property management. Math runs in your browser; nothing leaves the page.
Estimate the cooling tonnage your commercial space needs. Inputs: building square footage, ceiling height, occupant count, equipment heat load, sun exposure. Output: BTU/hour load and recommended tonnage band. Built for offices, retail, restaurants, warehouses.
Estimate how many service years are left in your packaged rooftop unit. Inputs: install year, maintenance frequency, climate severity. Output: remaining service life vs. replacement-decision band. Built for property managers tracking RTU portfolios past year 10.
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