Boldr Energy User Reviews

What users say

Top reviews

From a technician

The Boldr setup was seamless and straightforward, many options for mounting and different circumstances. I like it and you will too!

My issues were resolved promptly

Boldr resolved my presence sensing issues and it’s been working well since. Everything seems to working as advertised, I’m very pleased.

Response from developer

Thanks for the detailed feedback. I’m glad remote control has been reliable for your 5 units, but the presence sensing behavior you’re describing is clearly wrong. Those automations should transition cleanly between home and away states, and they should not be firing conflicting actions from the same presence event. I also understand the frustration of having reported this multiple times without seeing it resolved. That is on us. Please reach out to me directly at matheus@teamboldr.com so I can look into your exact setup with our engineering team and understand what is happening in your case. Feedback like this is very helpful, and I’d like to help get to the bottom of it. Matheus, Co-founder and CTO @ Boldr matheus@teamboldr.com

Buggy

Obviously, not ready for primetime release. App needs lots of work and servers need upgrading during busy weekend and holiday times!

Response from developer

Thanks for the direct feedback. Reliability under load is a core requirement, and we agree that the experience needs to hold up during peak usage periods like weekends and holidays. We’ve been making ongoing improvements to app stability, backend performance, and infrastructure resilience to reduce these issues, but it’s clear there are still gaps to close. We appreciate you taking the time to surface it. If it comes up again please don't hesitate to reach out directly to me. Matheus, Co-founder and CTO @ Boldr matheus@teamboldr.com

Presence sensing automations have never been worked

The good news is I can remote control 5 units with the Boldr app and it works every time. That’s about all I can say positive about it. I’d love to be able to use presence sensing so the system goes into an away mode when everyone leaves and back to home mode when anyone arrives. I’ve never seen this work. Judging by the automation history, when it does trigger an automation from presence sensing, it runs both. I’ve reported this multiple times to support. I wonder if anyone there actually uses their own product.
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Not easy

Took numerous times and over 1 hour to accomplish.

Response from developer

Hi there! I'm Matheus, CTO at Boldr. If you’re open to it, please reach out to me directly at matheus@teamboldr.com I would love to understand what issue you faced during the setup. We’re actively improving the onboarding to make it much faster and clearer. You’re absolutely right, setup should not take that long, and I’m sorry about the frustrating experience. Email me and I'll try to get these issues fixed. Best, Matheus

Difficult setup and Wi-Fi reconfiguration

I wanted to like this thermostat, but the setup and app experience have been extremely frustrating.

From day one, I had to call customer support just to get the app to control the unit at all. Recently, I needed to change Wi-Fi networks, and that turned into another long ordeal. I came close to getting it back online once, but could never fully complete the process.

After attempting a factory reset, the screen instructed me to “hold phone near unit,” but nothing ever happened. I eventually went into my phone’s Wi-Fi settings and connected the thermostat to the network manually — not because the device told me to, but because it was the only thing that seemed to work. Even then, the screen stayed stuck on “finish in app,” endlessly spinning, and the setup never actually completed.

The hardware itself seems fine, but the onboarding, Wi-Fi setup, and app reliability are not. For a smart thermostat, basic tasks like initial setup and changing networks should be straightforward. Unfortunately, they’re not. “The app never suggested creating a new home, which turned out to be the only way to fix the issue.”

Until the app and provisioning process are significantly improved, I would hesitate to recommend this product to anyone who isn’t very patient or very technical.
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Response from developer

Hi David, thanks for sharing this feedback. You’re absolutely right — changing Wi-Fi and getting through setup should be simple, and I’m sorry this turned into such a frustrating experience. What you described around getting stuck on “finish in app” and needing to manually connect is not how it should work. We’re actively improving this flow, and your note about having to create a new home is especially helpful. If you’re open to it, I’d love to help get things working properly. You can reach me directly at matheus@teamboldr.com . Any additional details or suggestions you’re willing to share there would also really help us improve the app. Thanks again for taking the time to write this. Matheus CTO, Boldr

Missing HomeKit integration

Everything’s fine except the fact that HomeKit is not available at all even if advertised on the website

Buggy Mess

App is a bug-filled frustration, matched only by the poor instructions and website

Response from developer

Hi there, I’m Matheus, Boldr’s CTO. I’m really sorry for the frustration here. This is obviously not the experience we want anyone to have, and I’d like to understand exactly what went wrong so we can fix it. If you’re open to it, please email me directly at matheus@teamboldr.com or reach out to our support team at support@teamboldr.com. If you can share the issues you ran into or any screenshots, we’ll dig into it right away and make the necessary improvements.

App does not work do not buy

App does not work heaters only work without any integration from the app. There is no sense of monitoring them. They are not what you are going to buy. Do not buy anything from this company when I reached out to them to tell them how poor the product was it did not matter. I was never going to get any sort of compensation or making the product right this company is a fraud. One star would be gracious of me if I could do anything, it would be negative stars absolute waste of money.
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Response from developer

Hi, this is Matheus, CTO at Boldr. I’m really sorry you had an experience this bad. Your heaters should absolutely work with the app, and if they didn’t, something went wrong on our side. Calling us a fraud is tough to read, but I get that it comes from frustration, and I want to understand exactly what happened so we can fix it. Please email me directly at matheus@teamboldr.com. I’ll look into your case myself and see what we can do to get your setup working or make things right. Thanks for speaking up. I hope we can turn this around.

Great user experience!

The app is so easy to use. Very intuitive and makes adjusting temp from anywhere a breeze.

Works great!

I feel like the app got a lot better. I have not had any issues with it so far despite having lots of rooms/units.

Mistake purchase

1. Works only via app and internet connection. So if power goes forget this heater even with alternative electric source. 2. App is horrible. Gets stuck and you have to download again. 3. Wants you to connect to devices related to heater via it WiFi network, taking your phone off your own network, wreaking havoc.
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App Needs A LOT of Work

This app makes the unit almost unusable. Such a cool unit and concept - need the app to work better before we install any more in this house.

Worst app ever

2 different Kelvin’s with two sensors and none of them will properly pair or stay connected. Makes the heater nearly useless. Abysmal.

This does not work, don’t buy

It worked ok for 6 months. Then it stopped working, winner connect to wifi. Tried to get help, even set up an appointment but nobody called. What a waste of money

Disappointed

Bought Klima from Kickstarter with the statement that HomeKit integration would be possible. It’s been two years and it is still not the case. If I had known, I would’ve purchased something else.

Utter Garbage

The app and heater don’t connect. Instructions are minimal and useless, as is supporting documentation/website. I’m incredibly disappointed and will be returning the Kelvin after much wasted time.

Excruciatingly frustrating

See title

Terrible experience!!

This was the worst experience I have ever had with an app enabled product. This is not smart climate control made easy.

Improving Rapidly - Responsive Customer Service

I had a few issues to start, but an extremely responsive customer service and capable engineering have made me a delighted customer