Terms of Service
Last updated: 2026-11-10
The English text is binding. For consumers resident in Denmark, the Danish version is binding; versions in other languages are translations for information, and if they differ, the English text prevails — see section 5.
These terms apply to your account at account.cphhvacstudio.dk, to our licence service and to the licences for the programs of CPH HVAC Studio Engineering Tools — Free, the Pro trial, the education licence and Pro — and to this website, tools.cphhvacstudio.dk.
1. Who we are
CPH HVAC Studio ApS, CVR/VAT no. DK46603796, Gyngemose Parkvej 56A, 2. th, 2860 Søborg, Denmark, office@cphhvacstudio.dk ("we", "us").
2. Who you deal with
Our order process is conducted by our online reseller Paddle.com. Paddle.com is the Merchant of Record for all our orders. When you buy a Pro licence you buy it from Paddle.com Market Limited (England) under Paddle's Buyer Terms, which govern payment, invoicing, VAT and sales tax, renewal billing, refunds and your statutory right of withdrawal. CPH HVAC Studio ApS grants the licence under the License Agreement (EULA) and runs your account, the licence service, seat assignment and product support under these Terms, which are governed by Danish law. Where the Buyer Terms and these Terms both deal with the same matter, the Buyer Terms apply to the purchase and these Terms apply to the licence and the service. Product support: office@cphhvacstudio.dk.
3. What you buy
- Free — the basic functions of every program, free of charge and also for commercial work, without an account.
- Pro trial — Pro free of charge for 30 days (section 9).
- Education licence — Pro free of charge for teaching, learning and non-commercial research (section 10).
- Pro — a yearly licence for one person (a seat) for one program: Pro and every update while the licence is valid, and security updates during the published support period (section 7).
The licence is granted by CPH HVAC Studio ApS under the License Agreement, which sets out what you may do with each licence. "All programs" (when offered) covers every program available at any time during your licence year; we do not promise specific future programs or release dates.
Both consumers and businesses can buy Pro licences. At present, Pro licences cannot be bought from the United States or Canada.
4. Prices and tax
Prices are per person per year, in euros. On this website each price is shown excluding VAT and including VAT: on the Prices page for the country you select, elsewhere with Danish VAT. Paddle applies the VAT or sales-tax rules of your country at checkout, including the reverse-charge rules for businesses with a validated EU VAT number, and shows the exact total before you pay. Within one purchase, 5–9 seats cost 10% less and 10 or more seats 20% less.
5. Delivery and contract language
You buy through Paddle's checkout, which opens from the Prices page of this website. The steps of the order, the correction of input errors before you pay and the confirmation of the order are part of Paddle's checkout. After the payment, the licence appears in the buyer's account, usually within a few minutes, and we send an e-mail on how to start. In the program, sign in with the same e-mail address (Help → Account & license…); the program then downloads the Pro build as an update. For computers without internet, the account offers the Pro installer and offline activation — see How licensing works. Nothing is delivered physically. If you buy several seats, one of them is assigned to you at once; you assign the others in the account (section 8).
Contract language: English; the Danish version of these Terms is binding for consumers resident in Denmark. Versions in other languages are translations for information. We store the version of these Terms you accepted and e-mail you its date, language and fingerprint with the licence.
6. Term, renewal and cancellation
6.1 Term
The licence runs for one year from the purchase and renews automatically for one year at a time until it is cancelled.
6.2 Cancelling the renewal
You can cancel the renewal at any time in your account ("Invoices and subscription" → "Cancel subscription"), in Paddle's customer portal, through the link in every renewal e-mail, or with the cancellation form at tools.cphhvacstudio.dk/cancel, which needs no sign-in; we confirm every cancellation by e-mail. If it was not you, the confirmation has a link to withdraw the request.
6.3 Reminder and price changes
We e-mail you at least 30 days before every renewal with the renewal date, the price and a cancellation link. If the price for the next year changes, we tell you at least 30 days before the renewal; if you do not cancel before the renewal date, the new price applies from the renewal.
6.4 Early termination by consumers
If you are a consumer, you may also end the licence at any time — in the first year and in every renewed year — with one month's notice to the end of a month. You do this in your account, which you sign in to with a code sent to your e-mail address: "My seats" → "End the licence early" shows the end date and the refund before you confirm. We then refund the price of the full months remaining after the end of the notice period (1/12 of the price paid for that year for each month); Paddle pays the refund to your original payment method. Pro ends when the notice period ends, and the program then works as Free (section 7.2). Within 14 days of a payment, you get the whole payment back instead (section 11). The cancellation form without sign-in (6.2) only cancels the renewal: a cancellation can be withdrawn, a refund cannot. This does not limit any further rights you have under the mandatory law of your country of residence.
6.5 Cancelling without ending early
If you cancel the renewal without ending the licence early, the licence runs to the end of the paid year.
7. Updates and the end of a licence
7.1 Updates
While your licence is valid, you receive every update of the program. Updates lead only to the latest version, and each version comes out as Free and Pro together. Your account shows the date until which your licence is valid ("valid until"); a renewal moves it to the end of the new licence year. Fixes, including security fixes, come only in the latest version, as a new version.
7.2 When a licence ends
Pro works only while a licence for it is valid. When the licence ends — at the end of the licence year without renewal, after a refund (section 11), on a consumer's early termination (6.4) or on termination for breach — the program works as Free, and no version stays Pro; an update installed after that is the Free version. Every project still opens: its Pro data are kept but locked until Pro is valid again, and documents exported while the licence was valid may still be used (License Agreement, section 28). If a renewal payment fails, Pro keeps working while Paddle retries the payment; the licence ends when Paddle finally cancels the subscription, and at the latest 30 days after the end of the paid licence year. A trial (section 9), an education licence (section 10) and a beta licence — Pro that we give free of charge to beta testers for a term we set, in the account or with a promo code — end in the same way. If we ever discontinue the licence service, we release a perpetual unlock for all paid versions beforehand.
7.3 Security updates
Each program gets security updates for at least 5 years from its placing on the market — its first release with Pro on sale; the month and year until which it gets them at least are on the Security page and next to its price. Security updates come in the latest version: as Free to everyone, and with Pro while the licence is valid. Each security update stays available for at least 10 years after its release.
8. Seats and use
A seat belongs to one person (one account) and is owned by the customer who bought it. A company that buys several seats assigns them to persons in its account and can move a seat to another person (limits: How licensing works). The company is responsible for the use of the programs by the people to whom it assigns seats.
Pro runs on one computer at a time per program and person and moves to the computer where you start the program; the program checks the licence when online and works in Pro without a connection for up to 7 days; offline activation is available for closed networks: its licence file works while the licence is valid and, for a seat that renews automatically, 21 days more after the paid year. The program never locks your projects.
When a company moves a seat to another person, the previous holder's Pro ends at the next check. If you hold a seat from your own purchase and pass it on — for example after selling the licence or changing jobs — we transfer it on request to the end of the paid licence year, after you confirm that your copies of Pro and your offline activations for that seat have been deleted: the renewal of the seat is cancelled, and the new holder continues after that with a purchase of their own.
You sign in with your e-mail address and a code we send to it; there is no password. An account belongs to one person: do not share it or pass on your sign-in codes, and keep its e-mail address up to date. You can delete your account in the account itself ("Delete account"). Details: How licensing works.
9. Free trial
Pro can be tried free of charge for 30 days, started in the program: one trial per computer and one per account for each program. No payment details are needed, and a trial never turns into a paid licence by itself. The trial needs an internet connection when the program starts and does not move to another computer. Documents, exports and Revit packages made during the trial carry the mark "Trial version — not for issue" and are not for issue to clients or others. We may end a trial that is misused. When the trial ends, the program works as Free. More in How licensing works.
10. Education
For teaching, learning and non-commercial research, Pro is free of charge on application for current students and teaching staff of an educational institution. An education licence runs for 12 months and can be renewed on re-application; it may not be used for paid or client work; exported documents carry the mark "Education — not for issue"; we may verify eligibility and refuse or revoke a licence that is misused or whose holder is no longer eligible. One seat per person; when the licence ends, the program works as Free. Apply at tools.cphhvacstudio.dk/education.
11. Refunds
Within 14 days of a purchase or a renewal you can get a full refund without giving a reason, also if you have already used Pro — see the Refund policy. This is our own promise and does not limit your statutory rights, including the right of withdrawal of consumers (Refund policy, "Your statutory rights"). After a refund, the licence ends and the program works as Free (section 7.2).
12. Results and liability
The programs are design aids for qualified HVAC professionals. Results must be checked by a qualified engineer, who remains responsible for the design. Our warranty and liability for the programs are set out in the License Agreement: Part II for Free, Part III for the trial and education, Part IV for Pro. Nothing in these terms or in the License Agreement limits our liability for intent, gross negligence or personal injury, or under product liability law. If you are a consumer, the mandatory rules of your country on the conformity of digital content and services apply and are not limited by the License Agreement.
13. Personal data
How we process personal data is set out in the privacy policy. We send only e-mails that belong to your account and your licences: sign-in codes, confirmations of purchases and cancellations, renewal reminders, and notices about your licence and about security. We send no marketing e-mails unless you have separately agreed to receive them.
14. Changes to these Terms
We may change these Terms for future licence years with at least 30 days' notice by e-mail. If you do not accept a change, cancel the renewal before it takes effect; the version you accepted continues to apply to your current licence year. If you have no Pro licence, a change applies 30 days after it is published on this page. Changes to the License Agreement follow its section 12. The date of the current version is at the top of this page.
15. Law and disputes
The licence and these Terms are governed by Danish law. The purchase is made with Paddle under its Buyer Terms. If you are a consumer, you keep the protection of the mandatory rules of your country of residence and may bring or defend proceedings before the courts there.
16. Complaints and contact
Product support and complaints: office@cphhvacstudio.dk — we answer within one working day. If we cannot resolve a complaint, consumers resident in Denmark can complain to the consumer complaint bodies at Nævnenes Hus, Toldboden 2, 8800 Viborg, www.naevneneshus.dk (mediation first; then Forbrugerklagenævnet, within its value limits and fee). Complaints about the purchase itself can also be made to Paddle through the link in your receipt.
CPH HVAC Studio ApS · Gyngemose Parkvej 56A, 2. th, 2860 Søborg, Denmark · CVR/VAT no. DK46603796