Replacement Tankless Hot Water Heater for a 12-1/4" x 16" Opening

Updated 01/12/2026 | Published 09/02/2024

Products Featured in This Question

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

(437)

$659.77

Replacement Access Door for Furrion RV Tankless Water Heater - 16" x 18" - White

(24)

$72.47

Question:

I have a 2003 wilderness freedom edition and need to replace my hot water tank with a tankless one the opening size for an opening size of 12.25w x 16h x 3.5 d with door size of 14.5 x 18w which one should I get? Everything seems to be 15 x 15.

asked by: Lori S

Expert Reply:

Thanks for the dimensions! The closest tankless water heater we have to those measurements is the Furrion item # FR93FR. It measures 12-5/8" wide x 12-5/8" tall x 19-1/4" deep so you're going to need to modify the space your water heater is currently in. We do not have anything that matches your dimensions.

The linked installation instructions below will cover how to modify your space to get the item # FR93FR set up.

For the door you'll want the Replacement Access Door for Furrion RV Tankless Water Heater item # FR63FR. It measures 18" wide x 16" tall.

expert reply by: Jerred H

Jerred H.

1/12/2026

Hey, how did the space modification go for fitting the Furrion tankless water heater in your Wilderness Freedom Edition? It’d be great to hear if the new access door lined up well after the changes. Your update could make it easier for others working with similar dimensions.