In the event of water heater failure, I'm considering installing a water heater pan with drain pump per this answer. How can I determine the necessary pump rate?
According to the Insurance Institute for Business & Home Safety, for insurance claims, water heater failures make up 20 percent of all residential water loss incidents, and incur over $5,000 per claim.
From past experience with failed water heaters, it seems that the flow rate might be the full incoming flow rate? Either way, what is a conservative capacity? If I can't find an off the shelf condensate pump with sufficient power, I assume there's no reason I couldn't attach multiple pumps--plus I'd get the benefit of some redundancy, right?