First Alert Combination Explosive Gas and Carbon Monoxide Alarm
with Backlit Digital Display, GCO1CN
Price as of 2026-06-01. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$24–$39
- Mid-range:$39–$78← You are here
- Premium:$78+
Is This Right For You?
- •First Alert loyalists — the brand spans 100 products in our database
- •Rating sits in the bottom 28% of Carbon Monoxide Detectors — higher-rated options exist
- •Kidde Carbon Monoxide Detector offers a better rating (4.7/5) at a similar or lower price ($36)
- •Kidde Carbon Monoxide Detector — 52% cheaper at $24 (Score A)
- •Kidde Carbon Monoxide Detector — higher rated at 4.7/5 ($36)
📊 Based on data analysis of 53 products in this category.
Mubboo Score: B
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Carbon Monoxide Detectors
Computed from live Amazon rating, review count, and price across 53 Carbon Monoxide Detectors available to US consumers · last refreshed 2026-06-01.
How It Compares
This Product First Alert Combination Explosive Gas and Carbon Monoxide Alarm | Most Popular Kidde Carbon Monoxide Detector | Best Rated First Alert Carbon Monoxide Detector | Best Value Kidde Carbon Monoxide Detector | |
|---|---|---|---|---|
| Price | $50.45 | $36 | $23.99 | $23.97 |
| Rating | 4.4/5 | 4.7/5 | 4.7/5 | 4.8/5 |
| Reviews | 996 | 35,752 | 22,830 | 1,338 |
| Mubboo Score | B | A | A+ | A |
Quick Specs
- Alarm
- Horn
- Color
- Gray/White
- Style
- Digital
- Material
- Polystyrene
- Unit Count
- 1.0 Count
- Sensor Type
- Electrochemical
- Manufacturer
- First Alert
- Model Number
- GCO1
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Choose a model with a digital display if you want to see real-time CO levels. Note that the low-battery chirp can be mistaken for a smoke detector, so test early; also remember these need replacement after 10 years.
- Plug-and-Play Installation
- Peace of Mind & Reliable Protection
- Battery Backup for Outages
- Loud Alarm for Safety
- Portable for Travel
- No Digital Display on Basic Units
- Low-Battery Chirp Resembles Smoke Detector
Expert Picks in Carbon Monoxide Detectors
- Kidde Smart Smoke + Carbon Monoxide Alarm — Best smart smoke alarm
- First Alert SC5 Hardwire Smart Smoke and CO Alarm — Works with Nest Protect units
- Kidde Ring Smart Smoke + Carbon Monoxide Alarm — Ring alarm users
Category recommendations from independent expert publications. Source links in References.
Related Video Reviews
- 📹 What Most Homeowners Don’t Know About Carbon Monoxide Detectors — The DIY HVAC Guy
- 📹 Best Carbon Monoxide Detectors in 2026 — wiredtech
- 📹 7 Best Carbon Monoxide Detector 2026! Tested & Tried — Everything Under Control
Key Features
- ✦N/A.
- ✦Imported
- ✦Versatile CO alarm senses high levels of propane, natural/methane gas, and carbon monoxide
- ✦Crisp backlit digital display allows you to view current and peak levels
- ✦Can be remotely muted using almost any household remote control
Source: product listing on Amazon.
About First Alert
- 100 products in our database
- Average rating: 4.6/5 across all products
- Price range: $13.98 – $648
- Categories: Carbon Monoxide Detectors, Fire Extinguishers, Smoke Detectors
If not the Combination Explosive Gas and Carbon Monoxide Alarm, consider these
Bottom Line
First Alert Combination Explosive Gas and Carbon Monoxide Alarm earns Mubboo Score B. Priced at $50 — a mid-range option, below the category average of $64. Rated 4.4/5 from 996+ reviews. Strong buy if: first alert loyalists. Skip if: rating sits in the bottom 28% of carbon monoxide detectors — Kidde Carbon Monoxide Detector (Score A, $36) may fit better.
Frequently Asked Questions
Is the First Alert Combination Explosive Gas and Carbon Monoxide Alarm worth buying in 2026?
It earns a Mubboo Score of B, with a 4.4/5 rating from 996 reviews — better than 28% of Carbon Monoxide Detectors we track.
How much does the First Alert Combination Explosive Gas and Carbon Monoxide Alarm cost?
It is currently $50.45 — mid-tier pricing for Carbon Monoxide Detectors.
How does the Combination Explosive Gas and Carbon Monoxide Alarm compare to other Carbon Monoxide Detectors?
The category's most-reviewed alternative is the Kidde Carbon Monoxide Detector (4.7/5, 35,752 reviews, $36). The Combination Explosive Gas and Carbon Monoxide Alarm carries a Mubboo Score of B vs A.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-01) and may change.