replace hot water heater with tankless heater

[HRF]

I need to replace My 6gal Electric / propane hot H20 heater. I'm looking at tankless / on-demand systems of which 3 appear to fit my 12.75" x 12.75" opening in my 2018 Cougar. Any advice on these 3 would be appreciated.
My concerns are (1) don't want to install a propane hog. (2) I think I need 2+GPM flow? (3) Want to maintain a uniform temperature of water during use.
(4) would like it to be trouble free so reliability is important, (5) cost to purchase.
The 3 that will fit my opening are A)RecPro RV Tankless Water Heater | On Demand Hot Water Heater | Gas Water Heater $500.
B)FOGATTI RV Tankless Water Heater On Demand Liquid Propane Gas Hot Water Heater Tankless RV Gas Water Heater $550
C)Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU $650

Thanks. Anyone have experience switching to tankless?

[chuckster57]

I’m not a real fan of on demand water heaters, but the only one I have worked with that is the most reliable is made by Truma.

[MJnK]

following... just bought a 29RKS and want to do same. Looking for a video specific to model. ....might be asking for too much!

[flybouy]

Originally Posted by MJnK

following... just bought a 29RKS and want to do same. Looking for a video specific to model. ....might be asking for too much!

Replacing the water heater would not be model specific to the camper. The plumbing will be the same, the only "uniqueness will be the location". That's easy to find by looking for the water heater cover on the outside and lookinmg at the same location inside.

[wiredgeorge]

Haven't heard many positive reports on any flash water heated made for a camper.

[ChuckS]

The OEM water heater you currently have is simple and straight forward in operation, maintenance, reliability and repair costs.... Why go with the other...

And none of the on demand units work on 120 volts AC mode... only LP so that is something else to ponder over...

Also anything with the FURION name on it is a NO for me.... Airxcel (Suburban) makes the IW60 on demand unit that will fit your RV with no issues....

https://www.airxcel.com/rv/suburban/...d-water-heater