What All Is Needed To Find And Install The Correct Tankless Water Heater In 2008 Flagstaff Camper?
Updated 03/15/2026 | Published 03/10/2026
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Question:
Hi I am looking into replacing my hot water tank with a tankless. I have a 2008 Flagstaff Classic SuperLite BHSS Travel Trailer and wanted to know which is the best one to replace it with? Also will it include everything I need? Thank You
asked by: Tammy H
Expert Reply:
Hello Tammy, I can help you out!
Do you know the size of your cutout space for the heater, and the size of your existing water heater door on the outside of the travel trailer? That way we can match one up without requiring you to modify it at all hopefully!
I highly recommend something from Furrion due to very good quality. The Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU - 16" x 16" Door # FR98SR is a solid option which has the following dimensions:
Access door: 16-1/8" tall x 16-1/8" wide
Cut-out:
Width: 12-3/4" to 12-13/16"
Height: 12-5/8" to 12-3/4"
Depth: Minimum 23-1/2"
Just compare to what you have and let me know, then we can fine-tune a different fit if need be.
Keep in mind you'll also need 12 - #8 (min 1") pan head screws from local hardware store, and then some butyl tape like Alpha Systems Butyl Tape for RV Weatherproofing - 20' x 1" # AL28FJ.
Product Page this Question was Asked From
Fogatti InstaShower 8 Plus RV Tankless Water Heater - 55,000 Btu - 15"x15" White Door
- RV Water Heater
- Tankless Water Heater
- Propane
- 40001 - 55000 Btu
- 12 Volts
- 13L x 13W x 13-13/16D Inch Cutout
- 14-5/16L x 15W x 15D Inch
- White Door
- Fogatti
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Larry B.
3/15/2026
We purchased this water heater at the beginning of the summer of 2025 for our camper we have lived in full time for the summer. It has been an excellent fit for our needs, but we are connected to a well and septic 100% of the time. I mention that because if the hot water demand drops too low, the heater has to cycle the burner to prevent overheating, which causes a few seconds of cold water as the burner regenerates. For this reason, if you plan to run off your fresh water tank and need to conserve water, a tankless option may be a little frustrating...especially while showering. The installation was a little challenging in our case. We were still limping along on our old water heater until we received the tankless, so I couldn't get an exact measurement on my camper's opening. It proved to be about a 1/4" small in both directions and our frame is aluminum. I was able to slightly shave the sides of the hole and I removed all the external screws from two sides of the water heater and then reinstalled them from the inside of the camper once it was through the hole. I also wanted to install the controller in my kitchen area, which made me have to get a little more creative with my wiring. Again, we have been very happy with our tankless unit, but there were some things I had not considered that would have been a problem if we still camped without hookups in this camper. I hope this info is helpful and I would be happy to answer other questions.