AppMarketSpy › Productivity › LoadSizer: HVAC Load & BTU
LoadSizer: HVAC Load & BTU
AC Sizing & Cooling Calculator
Duong Nguyen Huu · Productivity
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App info
- Developer
- Duong Nguyen Huu
- Category
- Productivity, Utilities
- Released
- Oct 5, 2026
- Version
- 1.0 (Oct 5, 2026)
- Price
- Free
- Size
- 32.0 MB
- Requires
- iOS 15.1
- Age rating
- 4+
- Languages
- English
In-app purchases
| LoadSizer Pro | $2.99 |
Current prices, App Store US.
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Release date
The release date was moved 1 time before launch.About LoadSizer: HVAC Load & BTU
Size the AC right — get a room-by-room cooling and heating load estimate in under a minute, built on the ASHRAE CLTD/SCL method instead of a single "BTU per square foot" guess. Built for installers doing a quick home survey, engineers who want a fast sanity check before a full Manual J, and homeowners who want more than a rule of thumb before buying an AC. TWO MODES - Quick: floor area, ceiling height, room type, main sun-facing side, insulation level, occupants, top floor or not. Instant estimate. - Detailed: full room construction — exterior walls and windows by orientation (area, U-value, SHGC, shading), roof, ground-floor slab, occupants and activity, lighting, equipment, and outdoor air (ACH). WHAT YOU GET - Sensible, latent and total cooling load (W, Btu/h, kW, ton) plus SHR, and a heating load for the coldest design day. - A horizontal breakdown by component: walls, windows…
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