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HVAC
Calculate radiant floor heating BTU output from floor area and temp.
Open Radiant HeatHVAC
Calculate radiator output needed from room volume and heat loss factor.
Open Radiator SizeYour specific task is calculate radiant floor heating btu output from floor area and temp. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate radiator output needed from room volume and heat loss factor. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Radiant Heat focuses on calculate radiant floor heating btu output from floor area and temp; Radiator Size focuses on calculate radiator output needed from room volume and heat loss factor. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Radiant Heat and Radiator Size work without signup. We only ask for an email if you decide to subscribe to a paid plan.