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HVAC
Reference for heat recovery systems: HRV, ERV, run-around coils, and heat wheels.
Open Heat RecoveryHVAC
Calculate humidity ratio in grains per pound from temperature and RH.
Open Humidity RatioYour specific task is reference for heat recovery systems: hrv, erv, run-around coils, and heat wheels. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate humidity ratio in grains per pound from temperature and rh. 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. Heat Recovery focuses on reference for heat recovery systems: hrv, erv, run-around coils, and heat wheels; Humidity Ratio focuses on calculate humidity ratio in grains per pound from temperature and rh. 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 Heat Recovery and Humidity Ratio work without signup. We only ask for an email if you decide to subscribe to a paid plan.