GRAND DESIGN IMAGINE 2500RL – LP Gas Detector Replacement

The calls I get on holiday weekends are always the same energy: a family parked at a campground, kids in the background, and a very stressed adult trying to describe a sound or a symptom over the phone. I always ask the same first question: when did you first notice something was off? The answer is almost never “today.” With LP gas detectors on rigs like the Grand Design Imagine 2500RL, the warning signs tend to get ignored or explained away — a chirp that stops on its own, an alarm that triggered once and never again — right up until the unit fails completely or, worse, starts throwing false alarms that make the coach unusable. A dead or malfunctioning LP detector isn’t just an inconvenience; it’s the one safety device standing between your family and an undetected propane leak inside a sealed living space. I’ve done this replacement more times than I can count, and this guide walks you through exactly how I do it on-site, step by step.

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

The stock LP/CO detector in the Imagine 2500RL either fails silently or chirps itself into being ignored—and by the time you realize it’s dead, you’re running on nothing. The Briidea dual alarm gives you the redundancy and the volume you need when a detector actually matters.

What works

• Separate LED indicators for LP and CO mean you know exactly which gas is the problem—not a single ambiguous light that leaves you guessing.
• 100dB alarm cuts through road noise, generator hum, and sleep—you will wake up if this thing goes off, and so will everyone in the campground.
• 12VDC hardwired power means it stays functional as long as your house battery has juice; no battery-dependent detector going silent on day four of boondocking.

What doesn’t

• Mounting footprint doesn’t always match the original detector hole—you may need to drill a new location or use a small trim ring, which means checking your interior finish first.
• 12VDC wiring demands a clean connection; if your existing pigtail is corroded or undersized, the detector will fault or fail to power—you’re not just swapping a part, you’re verifying the circuit.

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 RV Carbon Monoxide & Propane Gas Alarm, Briidea Dual LP/CO Alarm, Separate LED Indicators, 100dB Loud, Early Warning Safety System, 12 VDC and test your 12V circuit before installation.

This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.