Swapped to Oxygenics Fury RV immediately after I got my 2023 28RB.
Works great with girard tankless heater…no issues whatsoever.
Just make sure you set the temp to hottest you’re comfortable showering with, turn the shower valve (mixing valve) all the way to hot so you have full flow through the water heater, and don’t use the pause button (no navy showers).
I also swapped out shower head to Oxygenics Fury RV in my 2023 Flying Cloud 25FB. Absolutely no issues with Girard on demand.
I do lower the handheld shower head to the floor of the shower and rest it on a towel for cushion during travel to prevent plastic wall holder (from previous shower head) from breaking.
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