Observed arrival · 2026-10-30
RightSizeAC checks the tonnage before the quote
A home and small-business AC sizing calculator estimates cooling load from details like ZIP code, insulation, windows, and duct location.
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- Homeowners comparing air-conditioning quotes
- Worth noticing
- The prefilled Long Island example contrasts a 2.5-ton calculated load with a 4.5-ton rule-of-thumb quote.
Field notes
The calculator asks for local and building details, including ZIP code, roof color, window direction, insulation, and where the ducts run. In its prefilled Hicksville example, a 2,200-square-foot, two-story home gets a 2.5-ton calculated load beside a 4.5-ton rule-of-thumb figure. The page cautions that its estimate is not a room-by-room on-site Manual J; the quote-check report is an example, not a connected service.
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