GRAND DESIGN IMAGINE 2500RL – LP Gas Detector Replacement

Most owners of the Grand Design Imagine 2500RL never replace their LP gas detector until it stops working—and by then, it’s usually too late to catch the problem before the alarm screams or, worse, stays silent when it shouldn’t. I get calls on weekends and holidays from people who’ve ignored a chirp for weeks, dismissed a single false alarm, or discovered the unit is completely dead only after trying to light the stove. An LP detector that’s malfunctioning or dead isn’t a minor annoyance; it’s the only line of defense between your family and an undetected propane leak inside an enclosed cabin. I’ve swapped out dozens of these on-site, and the pattern is always the same: owners catch it too late. This walkthrough shows you exactly how I replace the failed unit on a 2500RL, step by step, so you don’t end up stranded at a campground waiting for a mobile tech.

The Briidea Dual Alarm: What Actually Replaces a Failed Grand Design LP/CO Detector

The factory LP/CO detector in the Imagine 2500RL either quits without warning or chirps itself into irrelevance—and once you finally realize it’s gone, you’re operating with zero propane safety coverage. The Briidea dual alarm gives you the redundancy and alarm volume that actually matters when gas detection stops being theoretical.

What works

• Separate LED status lights for LP and CO detection eliminate the guessing game—you see immediately which gas triggered the alarm, not a single ambiguous indicator.
• 100dB siren output cuts right through engine noise, generator rumble, and sleep—this detector will wake you and the entire campground if propane is present.
• Hardwired 12VDC operation means the detector stays armed as long as your auxiliary battery has voltage; you’re not gambling on internal batteries that go dead during an extended boondock stretch.

What doesn’t

• The mounting hole diameter and spacing don’t always align with the original detector—you may end up drilling new holes or installing a trim collar, which requires you to evaluate your wall finish first.
• 12VDC wiring demands solid connections; corroded terminals or undersized wire on the existing harness will cause nuisance faults or complete power loss—this isn’t a drop-in swap, you’re confirming the whole power circuit works.

I second-guessed this unit the first time I saw the separate LED indicators instead of a single alarm light—then realized that specificity is exactly why it beats the OEM detector by a mile. Order the Safe T Alert – Mini Dual LP/CO Alarm – Flush Mount Black – and test your 12V circuit before installation.

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