What users hate. Clustered.

1- and 2-star reviews grouped into themes with verbatim examples. Each cluster is a wedge a competitor could exploit.

71 reviews·8 themes

Aggressive paywall and subscription changes
Users are frustrated by sudden and drastic restrictions on free access, including reduced model lookups, mandatory subscriptions, and loss of previously free features.
24
reviews
- “Used to be good — I can only look up 1 model number a month now, it’s ridiculous it used to be great.”
- “Bait and Switch — Do not support these liars. These guys promised the world to us HVAC techs and told us all kinds of lies about how “free” these features would be for us.”
- “Pay wall — When I downloaded it. It was free. Now they want money. Some supply houses will not use them so no need for them.”
Loss of community and forums
The removal or degradation of the user-driven forum, which was once a key feature for knowledge sharing among technicians, is a major point of disappointment.
9
reviews
- “Removed forums — The forums were the best part of the app since of lately and since it’s gone ✌🏽”
- “Use to be good — Got rid of the forum where knowledgeable information was shared”
- “Was good — Used to spend some spare time helping and learning from others on the forum. Gone now.”
App functionality and technical issues
Multiple users report persistent bugs such as login failures, crashes, black screens, keyboard overlap, and inability to open the app after updates.
10
reviews
- “Can’t make an account! — I enter my number, and revive the code. But it doesn’t let me progress past that to enter the code and create my account!”
- “App will not open — My phone is up to date and so is the app yet it has not worked in weeks”
- “App Crash — The app crashes shortly after opening. What once was a great app, full of great info, and the only way I have found to contact tech support, now opens on the startup screen and crashes after about 5 seconds.”
Limited or missing product database
Users report that critical models (especially older or niche brands like Lennox 13GEP, KGA, package units) are absent from the manual and parts database.
8
reviews
- “Limited Lennox manuals — The database is missing the manuals for the entire lineup of the “Lennox 13GEP” model range.”
- “Package units — Can not find package units at all. If could would give a zero.”
- “Not all it’s cracked up to be — Nice idea, good intentions I’m sure, but needs work. I’ve tried to use it a handful of times looking for a wiring diagram I was having trouble finding. Each time it’s the same, unit not in the database.”
Forced ads and intrusive media
Users complain about unavoidable startup videos, frequent push notifications, and disruptive ads that interfere with workflow.
7
reviews
- “Start up video — Wow I used to use this app to look stuff up. Now some useless video pops up with volume and I can’t get away from it. Deleting the app.”
- “Forced to watch an ad while working — It was after 6 pm and I am trying to use the app, which has been great for me, when a video pops up after opening.”
- “Texts need to stop — The app is good and gives a lot of info but the texts they send every other day is annoying.”
Poor customer support and accessibility
Users report unhelpful or inaccessible tech support, long wait times, lack of response, and support requiring points or paid tiers to access.
6
reviews
- “What A Joke — Called tech support and they didn’t even have information for the unit I was calling about nor a clue what I was talking about.”
- “Sad to see — I’ve been a member for a while and now we can’t call tech support unless we have over a certain amount of points.”
- “DO NOT RECOMMEND! — Guy who answered could barley hear him because his dog kept barking, so unprofessional and embarrassing of an app.”
Misleading marketing and broken promises
Users feel deceived by past claims of being free forever, 'techs for techs' ethos, and transparency around monetization.
5
reviews
- “"Free, and always will be" until 3/20 — This is another direct quote from bluon “The app is free with tons of value, whether or not you use Bluon refrigerants :) Have a good one.” Just bad form to backpedal like that.”
- “Bait and switch. Sell outs — Bluon started out and raved about how it was a free service by techs for techs. Flash forward to a year or two ago and its full of ads...”
- “Used to be Great — I can only look up 1 model number a month now, it’s ridiculous it used to be great. It sucked when it was only 3 look ups a month but now only 1, app is pretty much a waste of space.”
Geographic and access restrictions
Users from outside the US (e.g., Australia) report being blocked or unable to use the app due to regional limitations or forced international calls.
3
reviews
- “Why, just why — So in order for me to be able to use the app all I have to do is call a US number ... from Australia. No thank you”
- “Not for homeowners? — Liked the idea of this app, so I downloaded it and started the account setup only to find that it’s not just free for technicians, it’s only for technicians.”
- “High and mighty! — I downloaded the app since I found it advertised on a YouTube video about how troubleshoot your home hvac system. When I tried signing up for it, it said I needed to be a professional to use.”

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