Last updated: November 2025
1. Introduction
Welcome to the Hysopt Brainteaser Giveaway! We’re excited to engage withthe HVAC engineering community and reward insightful, curious minds with amonthly prize draw.
Please read these Terms & Conditions carefully. By participating,you agree to these rules.
2. Who Can Enter
The giveaway is open to individuals who:
• Are 18 years or older
• Work in or are interested in the HVAC, building systems, or energy efficiency sector
• Reside in one of our core regions: European Economic Area (EEA), Norway, Switzerland, United Kingdom, United States, Canada, or Australia.
Not Eligible
• Employees or contractors of Hysopt
• Residents of countries where sweepstakes are prohibited
3. How to Enter
Each Brainteaser will be posted on Hysopt’s official LinkedIn page.
You can earn entries in the monthly prize draw in the following ways:
Comment on the post (right or wrong)
1 entry
Correct answer
+1 bonus entry
Tag a friend or colleague
+1 bonus entry
Maximum of 3 entries per person per Brainteaser.
No purchase or payment is required to enter or win.
4. Prize
Each calendar month, one (1) winner will receive:
€500 (or local equivalent) in the form of:
• An Amazon gift card
• OR a prepaid Visa/Mastercard gift card (winner's choice, subject to availability)
Currency equivalents will be calculated using exchange rates at the time of awarding. Prize delivery will be arranged privately with the winner via email or LinkedIn direct message.
5. Giveaway Period
All entries from posts within the month are included in that month’s draw.
One (1) winner is drawn randomly at the end of each month.
6. Winner Notification
The winner will be contacted via LinkedIn direct message or email (if available). The winner will also be announced publicly on Hysopt’s LinkedIn page, with their consent.
If the winner does not respond within 7 days, another winner may be selected.
7. Bonus Recognition (Not Linked to Prize Draw)
Hysopt may highlight the following comments for fun and visibility:
• Most insightful answer
• Funniest or most creative response
These recognitions do not increase your odds of winning the prize.
8. Fairness & Conduct
To keep the giveaway fun and fair:
• Coordinated mass commenting by company teams will not provide additional advantage
• Abuse, spam, or offensive content will result in disqualification
9. Data Privacy
We will only collect and use your personal data to:
• Contact the winner
• Deliver the prize
We do not store personal data long-term and do not sell or share your data.
10. Legal Notes
This giveaway is not sponsored, endorsed, administered by, or associated with LinkedIn.
No purchase necessary. Void where prohibited.
Hysopt reserves the right to modify or cancel the giveaway at any time.
11. Questions?
Contact us at: marketingteam@hysopt.com
Or visit: www.hysopt.com
12. Hysopt Advent Cup 2025 – Additional Terms
These additional terms apply to the Hysopt Advent Cup 2025 promotion (the “Advent Cup”), which is a special edition of the Hysopt LinkedIn Brainteaser Giveaway running in December 2025.
For the Advent Cup period, these terms supplement and, where different, replace sections 3–7 of the general Terms & Conditions below. All other sections (including eligibility, privacy, and legal notes) continue to apply.
12.1. Advent Cup Period & Posts
The Advent Cup runs from 1 December 2025 until 31 December 2025.
During this period, Hysopt will publish up to four (4) Advent Cup brainteaser posts on its official LinkedIn page (approximately one per week).
Only interactions on clearly marked “Hysopt Advent Cup” posts during the Advent Cup period are counted for this promotion.
12.2. How to Earn Points
Instead of traditional “entries”, the Advent Cup uses a points-based system. Points are personal and also count towards the participant’s company total.
For each Advent Cup LinkedIn post:
Comment your take on the brainteaser
→ +1 point for you and for your company
Tag an HVAC colleague or relevant professional in your comment(for example, someone who would have an interesting view or solution)
→ +3 points per tagged person, up to a maximum of 3 tags per comment
Reply to someone else’s comment with a meaningful question, argument, or example (not just an emoji or “I agree”)
→ +1 point per qualifying reply, up to a maximum of 2 reply-points per post
Points are awarded at Hysopt’s reasonable discretion. Spam, irrelevant tagging, abusive content, or obvious attempts to game the system may be disqualified.
From time to time we may announce “bonus boosts” in the copy or comments of a post (for example: early-bird bonuses, double-point days). Where such boosts are clearly stated on a specific Advent Cup post, those temporary rules will apply in addition to the base point values above.
12.3. Personal vs Company Points
Every qualifying action earns points for the individual participant and for one company.
For company scoring, “company” is normally determined by the employer listed on the participant’s LinkedIn profile, or by a company name clearly stated in the comment if different.
If company names are inconsistent or ambiguous (e.g. abbreviations, local entities), Hysopt may combine or separate them in a reasonable way for leaderboard purposes.
Hysopt’s decision on how points are allocated and how companies are grouped is final.
12.3.1. Eligible Participants and Companies
The Advent Cup is open to individuals and companies working in or closely connected to the HVAC, building services, or energy systems industry.
Hysopt reserves the right to verify participant and company eligibility and to exclude entries that are clearly outside the scope of the HVAC sector (for example, unrelated marketing agencies, general consumer accounts, or automated profiles).
Direct competitors of Hysopt and their employees are not eligible to win prizes, though they may still engage in public discussions.
If Hysopt determines that a participant or company is ineligible or irrelevant to the competition’s purpose, their points may be discounted from both personal and company totals at Hysopt’s discretion.
12.4. Advent Cup Prizes
There are two main prizes for the Advent Cup:
1. Advent Champion (Individual Winner)
One (1) individual with the highest personal points total across all Advent Cup posts will receive €500 (or local equivalent) in the form of:
• an Amazon voucher, or
• a prepaid Visa/Mastercard gift card, subject to availability in the winner’s country.
The “local equivalent” will be calculated using a reasonable exchange rate at the time of awarding.
2. Advent Office Pack (Company Winner)
One (1) company with the highest combined company points total across all Advent Cup posts will receive the “Hysopt Advent Office Pack”, consisting of one (1) large box of goodies, snacks and coffee (for example: quality coffee, snacks, chocolate, mugs, notebooks, pens, backpacks, etc).
The exact make/model of the espresso machine and the contents of the gift box may vary by region and availability. Hysopt may provide an equivalent machine or package of similar value where needed (for example, by ordering via a local retailer).
12.5. Substitution, Local Rules & Donations
If the individual prize or company prize cannot be accepted because of:
• local laws or regulations,
• internal company gift/compliance policies, or
• practical constraints (e.g. shipping restrictions), Hysopt will work with the winner to agree a reasonable alternative of similar value.
Alternatives may include (for example):
• a donation to a charitable or educational organisation chosen by the winner,
• a training or software credit, or
• a different combination of vouchers and smaller gifts.
Hysopt is not obliged to offer cash in lieu of the office prize, beyond the €500 (or local equivalent) individual prize described above.
12.6. Winner Selection & Announcement
At the end of the Advent Cup period, Hysopt will total all qualifying points and determine:
• the Advent Champion (top individual), and
• the Advent Office Pack company winner (top company).
In the event of a tie, Hysopt may use reasonable tie-breakers such as:
number of distinct Advent Cup posts engaged with,quality and relevance of contributions, or
a random draw between tied participants/companies.
Winners will be contacted by LinkedIn direct message or email (if available).
Subject to winner consent, the winners will be announced publicly on Hysopt’s LinkedIn page no later than 9 January 2026.
If a winner does not respond within 14 days of being contacted, Hysopt may select an alternative winner.
12.7. Language & Regions
Advent Cup posts may appear in English and/or Dutch. There is one combined competition; points from all eligible participants and posts are counted together.
The regional eligibility criteria in section 2 (“Who Can Enter”) still apply. The phrase “€500 (or local equivalent)” is intended to cover currencies such as GBP, USD, CAD and others in eligible countries.