For over a year we built HeatAlgo together with installers - with your feedback after every project, with questions asked over the phone, and with what actually worked on site rather than what merely looked good in a slide deck. That chapter ends today: HeatAlgo is no longer a beta.
What changed along the way
The three things you asked about most often are ready.
The AI client form. Instead of calling around for wall dimensions, window types and construction layers, you send your client a link. The client fills in the form on their own, at their own pace, optionally with AI help that suggests values read from their documents. You review the submission and accept the data before it enters the project - nothing lands in your calculations without your sign-off.
Notifications. You know right away when a client completes the form or answers your follow-up request - instead of checking the status manually several times a day and opening every project just to see whether anything changed.
A better start. Onboarding walks you through your first project step by step - from creating the project, through your first heat load section, to your first result - so you get your first calculation done without reading a manual or guessing what to click next.
On top of that, the heat load and underfloor heating modules received plenty of smaller fixes: clearer error messages, faster saving, a more comfortable floor-plan editor. None of these touch the calculation methodology itself - EN 12831-1 stays exactly as it was.
Why we're leaving beta now
A year ago HeatAlgo calculated the heat load and that was it. Today the path from client data to a finished design is complete: the AI form collects the client's data, the heat load calculator runs the standard-compliant calculation, and you design the underfloor heating straight from the results - ending with a document you can hand to the client.
That was the bar we set for ourselves before ending the beta: the whole path has to work end to end before we start asking anyone to pay. It does - so we're done calling it a test version.
What changes for your account
Every account - new and existing - now starts with 14 days of full access, with no feature limits and no credit card. If you already use HeatAlgo, your 14 days count from the day of this post, regardless of when you registered - nobody loses time already spent in the beta.
After the trial, continuing requires a plan matched to your business - we agree the terms individually, in a conversation, not from a price list detached from how you actually work. If you decide to continue, you get an invoice and a scope agreed up front.
One thing stays the same whatever you decide: viewing the projects you've already created and your calculations stay with you forever. After the trial only creating new calculations is gated - nothing disappears and there is nothing you need to export "just in case" before it ends.
If you have a project in progress that you started in the beta - none of it is lost. The data, calculations and files stay exactly where you left them, and the 14 days of full access count from now, not from your registration date.
Thank you
Thank you to everyone who created an account this year, reported a bug, suggested a fix in the form, or simply tested HeatAlgo on a real project. You decided what ultimately made it into the app - every change described above came from a specific conversation, not from a wishlist written at a desk.
What's next
If you don't have an account yet, create a free one - calculate and design without limits, no card. (The 14 days described above was the beta-exit offer; since July 2026 the account is simply free forever - details in the changelog.)
Create a free account