Water Heater Recovery Time: 30 gal, 40°F rise, 75,000 BTU/h
Specific conversion page with reference context, calculator, and nearby values.
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30 gal, 40°F rise, 75,000 BTU/h converts to
10 min
Use this as a quick reference for Water Heater Recovery Time.
Value Details
Input: 30 gal, 40°F rise, 75,000 BTU/h
Output: 10 min
Browse all reference values for Water Heater Recovery Time
deliveredBtuh: 60000 | tempRiseF: 40 | heaterInputBtuh: 75000
Water Heater Recovery Time Calculator
Estimate how long a heater needs to recover a storage tank after a temperature drop.
Estimated Recovery Time
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Nearby Reference Values
| Scenario | Recovery Time | Delivered BTU/h |
|---|---|---|
| 30 gal, 40°F rise, 30,000 BTU/h | 25 min | 24,000 |
| 30 gal, 40°F rise, 40,000 BTU/h | 18.8 min | 32,000 |
| 30 gal, 40°F rise, 50,000 BTU/h | 15 min | 40,000 |
| 30 gal, 40°F rise, 75,000 BTU/h | 10 min | 60,000 |
| 30 gal, 50°F rise, 30,000 BTU/h | 31.3 min | 24,000 |
| 30 gal, 50°F rise, 40,000 BTU/h | 23.5 min | 32,000 |
| 30 gal, 50°F rise, 50,000 BTU/h | 18.8 min | 40,000 |
| 30 gal, 50°F rise, 75,000 BTU/h | 12.5 min | 60,000 |
| 30 gal, 60°F rise, 30,000 BTU/h | 37.5 min | 24,000 |
Frequently Asked Questions
Common questions about Water Heater Recovery Time, formulas, and expected usage.
What is water-heater recovery time?
Recovery time is how long a heater takes to raise tank water from one temperature to another after drawdown.
How is recovery time estimated here?
The estimate uses required heating energy (gallons × 8.34 × ΔT) divided by delivered BTU/h, converted to minutes.
Why include efficiency in recovery calculations?
Not all input energy is transferred to water, so efficiency adjusts effective heating rate.
Does this model standby losses and stratification?
No. This is a simplified estimate; real systems may recover differently due to losses, burner control, and tank behavior.
Methodology and Review
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Use this page as a fast lookup reference, then confirm final project values using applicable standards and manufacturer documentation.