YSK: Most "Energy Optimization Services" for buildings are scams.

posted 10 months ago

I’ve been working as an automation technician for around 5 years now, and I’ve come across several services that promise a substantial improvement in energy efficiency when it comes to heating, especially involving district heating with water. Most of these are subscription services.

While they usually quote numbers that are based in reality, the way they are accomplished is often covered in technical jargon and straight up BS that a person without experience won’t be able to understand and so believes the seller.

That’s where this post comes in.

All that the impressive sounding, weather pattern considering, ultra-futuristic solution really does is take the existing setpoint for the heating system and lowers it by ≈2°C. That’s it. One line of code. Takes any competent professional 5 minutes to implement. What’s worse, some systems are laid on top of the old one, with a higher priority. Meaning that you need a specialist provided by the “optimization” company to adjust the heating. So if you’re too cold or too hot, tough shit. Your building’s maintenance company can’t change it.

The existing system in most cases already bases its setpoints on the current outside temperature, with a pollrate of around a second. What the weather is going to be like next week, or even tomorrow, does not matter. The system already adjusts the setpoints in real time.

Maybe a bit of a niche rant, but hopefully helps at least someone. Thanks for reading!

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fosstulate@iusearchlinux.fyi

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9 months ago

Thanks for posting, OP.

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