What are gas HWS users experience with pumps.
What is recommended as a LPM min to get a decent shower.
4.3, 6, of greater.
cheers
It really depends on what else you need to use the pump for.
For a gas HWS like the HOTTAP, which operates from 4LPM to 6LPM, I'd recommend getting a 6LPM pressure pump. Why? At 4LPM you get the highest increase in source water temperature, 35C. So, if you decide to camp during summer, and your source water is 15C, your output water will be 50C. Whereas, at 6LPM, you get a 25C increase. This would give you a 40C shower. In my experience, it is easier for the kids to handle a 40C shower as opposed to a 50C shower.
So, 6LPM. Why limit your unit with a 4.3LPM pump when it is capable of more?
Now, if you need to fill up your water tanks or just move large amounts of water, you should grab a higher flow pump. The HOTTAP, for example, doesn't have issues if you use a 17LPM pump. It still regulates it down to 6LPM, so it's as if you are using a 6LPM pump, but now you have a high flow pump to move around a ton of water as well!
To get a decent shower, you can get away at any flow from 4LPM to 6LPM. 4LPM in the middle of a cold winter is more than enough to warm you up and get you fresh and clean. In summer, 6LPM is perfect for washing all the sweat off.