We publish verified community reviews and independent trust data for CO detectors, so you can make an informed decision before buying a life-safety device for your home.
Trust score: 11/100 · 3 blacklist flags · Domain 33 days old at review · Certifications unverifiable · Review counts not traceable
"Ordered the Haven detector. 3 weeks, nothing arrived. Support emails go unanswered. Very disappointing experience."
GuardAir Pro — UL/ETL certified · Real PPM display from 0 · US-based support · Actual return policy
Based on community submissions and independently sourced trust score data. Lower scores indicate more buyer concerns.
We collect real buyer experiences so families don't get burned by unverified detectors.
Share your experience — good or bad. Which site, what happened, whether you received the product, and if it worked.
Our team cross-references reports against trust scores, blacklist data, and site registration info before publishing.
Verified reviews are published publicly so future buyers can make an informed decision before spending money.
Submitted by real buyers. Most recent first.
"Ordered in February. It's April. Nothing delivered. Emails go unanswered. $79 gone."
"Received a device. Cheaply made. No certification marks anywhere on the packaging. Returned — never got refund."
"Arrived in 4 days. UL certification label present, real-time display works perfectly. Would buy again."
"Saw '80,000 5-star reviews' and thought it was safe. Big mistake. Product arrived with Chinese characters only on packaging. No UL mark."
"Reliable brand, no issues. Does the job but no real-time PPM readout. Does alarm eventually."
The only CO + gas detector in this price range with real-time PPM display from 0 PPM, UL/ETL certification, and US-based customer support that actually answers.
Public trust score data independently sourced from Gridinsoft, Scam Detector, and Scamadviser. We present this data for transparency.
Based on available public data, truststeadfast.com scores 11/100 on Gridinsoft and 20.4/100 on Scam Detector, with 3 blacklist detections at the time of review. The domain was approximately 33 days old when it was first reviewed. The site claims "80,000+ 5-star reviews" which cannot be traced to a verified review platform. We have received 621 community reviews against this site as of April 2026. We recommend researching any site thoroughly before purchasing a life-safety device, and only buying products with independently verifiable certifications.
Haven is marketed as a 4-in-1 CO and gas detector sold exclusively through truststeadfast.com. Multiple community reports indicate the product either does not arrive, arrives without recognisable safety certification marks (UL/ETL), or does not perform as described. We could not independently verify UL or ETL certification for the Haven device at the time of publishing. For life-safety devices like CO detectors, we strongly recommend only purchasing products with verifiable UL or ETL certification.
First, contact the seller directly in writing and allow a reasonable period for them to respond. If you don't receive a satisfactory resolution, you may wish to contact your payment provider to understand your options. We also encourage you to submit your experience here so other buyers can make an informed decision.
Look for UL 2034 or ETL certification marks on the physical product packaging — not just on a website. Both UL (Underwriters Laboratories) and ETL (Electrical Testing Laboratories) maintain online databases where you can verify certification. Our top pick, GuardAir Pro, is verifiable on both databases. Kidde and First Alert are legacy certified brands available from established retailers. See our full comparison for detailed analysis.
All reviews published on CO Detector Watch are submitted by community members and manually reviewed before publishing. We do not edit review content — we verify the site or product name and check for spam patterns only. See our About page for our full verification process.