Recommended Replacement For A Suburban SW6 DE RV Water Heater

Updated 05/25/2026 | Published 04/16/2024

Products Featured in This Question

Furrion RV Tankless Water Heater - 60,000 Btu - No Door

(427)

$815.95

LaSalle Bristol XTRM Universal Non-Sag Sealant for RVs - White - 10.1 oz - Qty 1

(82)

$30.20

Alpha Systems Butyl Tape for RV Weatherproofing - 20' x 1" x 3/16"

(259)

$24.71

Furrion RV Tankless Water Heater - 60,000 Btu - 16" x 16" Door

(427)

$815.95

Question:

Looking to replace SW6DE Water Heater in a 2017 Shadow Cruiser 313BHS with a tankless option. Looking for recommendation on made to replace and door replacement if needed.

asked by: Michael M

Suburban SW6 DE Water Heater
(click to enlarge)

Expert Reply:

Hi Michael,

To replace your Suburban SW6 DE water heater you'll want the Furrion RV Tankless Water Heater # FR98SR. This tankless water heater is one of the most efficient units on the market, producing up 144 gallons of hot water per hour. The dimensions I'm seeing for your Suburban show it being roughly 12-3/4" tall by 12-3/4" wide so the # FR98SR with its 16" x 16" door would be a great fit.

During the installation you're going to want to use some butyl tape # AL28FJ on the back side of the mounting flanges for both the door and unit. When mounted in place you can then use some non-sag sealant # 344270341437-1 around to outer trim edge of the access door for a waterproof seal.

expert reply by: Kevin C

Mike

4/16/2024

Trying to avoid having to cut into the camper. With it being 16x16 will I have to widen the current hole?

Kevin C.

4/16/2024

@Mike The Furrion # FR98SR is 12-5/8" wide x 12-5/8" tall and the access door is larger to cover any gaps. the mounting flange will take up the difference and sit flat against trailer wall. You should have a tiny gap between the cutout hole and new Furrion unit compared to the old Suburban unit. The mounting flange of the unit should cover the gap, but you'll want to use butyl tape # AL28FJ to ensure no water can get between it and the wall.

Mike M.

5/25/2026

I have a suburban sw6de and want to go with the Furrion tankless like the FR98SR. Is there an option for a black door instead of white?

Claire H.

5/25/2026

@MikeM You're looking for the Furrion RV Tankless Water Heater 60k Btu part # FR32TD! It is the same water heater and size door as the FR98SR but with a black door.