📜Terms of use

By the BTU Sizer editorial desk

Last updated 2026-09-04.

These terms cover btusizer.com (“the site”). Using the site means you accept them.

Who you are dealing with

• Operated by: maicrosites.com
• Established in: Slovakia, European Union
• Email: info@btusizer.com
• Site: btusizer.com

1. What the site is

BTU Sizer is a set of calculators and reference pages. Everything that calculates runs in your browser and is free to use, with no account.

Everything here is free. There is no account, no subscription and nothing to buy: we sell nothing on this site and take no payments.

The results are information, not advice. We check our methods and show them on the page, but we cannot know your situation. Do not use this site as the only basis for a decision involving money, health, safety or the law. For anything that matters, ask someone qualified.

2. What you may do with it

Use it, personally or at work, as much as you like. You may link to any page and quote from it with attribution. You may embed a tool where we offer an embed option, on your own site.

You may not: scrape the site at a rate that degrades it for others; copy the content wholesale to republish it; resell access; or present our output as your own product. Automated access outside robots.txt is not permitted.

3. Ads

The site is paid for by advertising, served by Google AdSense. Ads are labelled. We do not control which ads are shown and do not endorse what they advertise.

4. Emails you ask for

Where a page offers a reminder or an update by email, we send it only after you ask for it, and every message carries a one-click unsubscribe that also deletes your address. We never sell addresses and never pass them to anyone but the provider that delivers the mail. See the privacy page for what is kept and for how long.

5. Changes to these terms

We may change these terms. The date at the top says when this version took effect.

6. Liability

Nothing here limits liability for death or personal injury caused by negligence, for fraud, or anything else that cannot be limited by law. Beyond that, and to the extent the law allows, we are not liable for indirect or consequential loss, or for loss of profit, revenue or data.

If you are a consumer, you keep every right the law of your country gives you, and nothing in these terms takes those rights away.

7. Which law applies, and where a dispute would go

We are established in Slovakia; the site is used all over the world. So this section says plainly which rule wins where, instead of naming one country and hoping you do not read on.

If you are a consumer, the law of the country you live in still protects you. Slovak law governs this contract, but only so far as it does not remove a protection given to you by the law of your own country that cannot be signed away. Where the two differ, the one that is better for you applies. That is Article 6 of Regulation (EC) No 593/2008 (Rome I), and we would rather write it down than have you discover it.

Where a case would be heard.

• We will bring a claim against you only in the courts of the country where you live. For consumers in the EU that is required by Article 18(2) of Regulation (EU) No 1215/2012; we apply the same rule to consumers everywhere.
• You may sue us either in your own country or in Slovakia, whichever suits you better.
• A standard term that pushes a consumer into the trader’s home court is unfair and a court must refuse to apply it (Océano Grupo, C-240/98). There is no such term here, and there will not be one.

If you use the site for business purposes, the consumer wording above does not apply to you: Slovak law governs and the courts of the Slovak Republic have exclusive jurisdiction.

We do not use arbitration. There is no arbitration clause and no class-action waiver in these terms. If you want a court, you can have one.

8. Complaints and out-of-court settlement

Write to us first: info@btusizer.com. We answer complaints within 14 days, in English or Slovak. Most things end there.

If it does not end there, the out-of-court route for consumers is alternative dispute resolution (ADR):

• The competent body for us is the Slovak Trade Inspection (SOI), the residual ADR entity in Slovakia. Under Act No. 391/2015 Coll. we are obliged to cooperate with it, and we do.
• We answer any request from an ADR entity within 20 working days, as Directive (EU) 2025/2647 requires.
• If you live in another EU country, your national European Consumer Centre will take the complaint up with us for free, in your own language.
• The EU’s Online Dispute Resolution platform closed on 20 July 2025 and no longer exists. Regulation (EU) 2024/3228 repealed it. If you find a link to it anywhere on this site, it is our mistake — please tell us.

9. Contact

Questions about these terms, or anything else: info@btusizer.com. Other ways to reach us are on the contact page.