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Update: simpler plan selection and checkout

Compare plans in one window, unlock a complete project and enter your discount code at checkout.

Founder of HeatAlgo, author of the calculation engine to EN 12831 and EN 1264

Changed on 30 September 2026: a report can also cover one or two modules of a project - the current rules: the free plan and what a report unlocks.

New features

Plan selection now opens in one full-screen window wherever you can unlock a report. Compare the free account, a single complete project and a subscription in one place.

Improvements

  • Choose Change plan in Billing to open the comparison. Your current plan, reports and orders stay in their familiar locations.
  • One purchase unlocks one complete project. There is no separate report quantity step.
  • Subscription periods, currency and savings appear alongside the plans. The checkout summary stays in place when you change currency.
  • If you newly opt in to HeatAlgo offers during checkout, you can receive 10% off your first purchase. For a subscription, this covers the first payment. If you already have an emailed code, enter it in the payment form.

Fixes

  • Fixed opening checkout with a welcome code.
  • You can dismiss a checkout error and try again.
  • The sidebar unlock button and plan comparison fit smaller screens better.

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Blog

See also

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Electric underfloor heating loses its subsidy in 2027 - what stays in Czyste Powietrze

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