Calculateur de HVAC Tonnage
Estimate the AC tonnage needed for a home using a standard 20 BTU per sq ft rule of thumb.
Formula and method
This calculator computes Required BTU, Required tonnage directly in your browser without sending data to an external server.
Mathematical formula
- Required BTU:
areaSqft × btuPerSqft - Required tonnage:
(areaSqft × btuPerSqft) ÷ 12000
Variables and parameters
- Home area (areaSqft): default value 2000 ft².
- BTU per sq ft (btuPerSqft): default value 20.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does HVAC Tonnage Calculator use?
HVAC Tonnage Calculator evaluates outputs such as <strong>Required BTU, Required tonnage</strong> based on inputs including Home area, BTU per sq ft. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into HVAC Tonnage Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in HVAC Tonnage Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is HVAC Tonnage Calculator free to use?
Yes. HVAC Tonnage Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does HVAC Tonnage Calculator store or upload my data?
No. HVAC Tonnage Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is HVAC Tonnage Calculator?
HVAC Tonnage Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed HVAC Tonnage Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of HVAC Tonnage Calculator to your own blog post or page.