1. What is the VT501 series?
Think of the VT501 as your room’s intelligent fresh‑air system — an HRV (Heat Recovery Ventilator) that constantly exchanges old air for new while reclaiming warmth that would otherwise be lost. It keeps every space healthy, comfortable, and energy‑efficient.
2. What makes it special?
- Energy‑saving design: Recovers heat from outgoing air to gently warm fresh incoming air.
- Quiet comfort: Operates whisper‑softly, day and night.
- Smart flexibility: Configurable as a Master or Linked unit for any room size.
- Effortless operation: Quick installation, user‑friendly controls, and minimal upkeep.
- Cleaner breathing: Removes dust, pollen, and fine particles before they circulate indoors.

3. Where can it be used?
Almost anywhere fresh air matters — homes, offices, clinics, classrooms.
The VT501 fits neatly into new buildings or retrofit projects without major structural work, integrating smoothly into existing ventilation layouts.
4. What sets it apart from other HRV units?
Its modular design allows multiple VT501 units to work together across large or complex spaces, maintaining constant airflow balance. The system remains quiet yet powerful — ideal for anyone who values comfort without compromise.
5. Can it be controlled remotely?
Yes. Depending on the model, users can adjust airflow, temperature, or mode through a smartphone oder smart‑home system — ideal when you’re away or relaxing indoors.
6. Does it require much maintenance?
Almost none — but a bit of routine care ensures peak performance:
- Check and clean filters every few months.
- Have the heat exchanger inspected annually.
- Schedule a professional tune‑up once a year.
It’s genuinely a “set‑it‑and‑forget‑it” ventilation system.
7. How energy‑efficient is it?
By recycling up to 90 % of recovered heat, the VT501 significantly reduces energy used for heating and cooling. This means lower energy bills, reduced environmental impact, and consistent comfort all year long.
8. How is it installed, and where can it go?
A certified HVAC technician installs the VT501 to ensure peak performance and clean airflow.
It can be ceiling‑mounted, wall‑mounted, or arranged in a modular layout, with one Master unit controlling several Linked units across larger areas — from apartments to office wings.
9. How does it handle humidity?
The VT501 manages moderate humidity effortlessly. In especially damp areas such as basements or coastal regions, choosing the appropriate model and performing regular maintenance keeps moisture levels balanced and the air crisp.
10. How does it improve air quality and breathing?
It constantly delivers oxygen‑rich air while filtering out dust, allergens, and airborne particles. By reducing condensation and mold growth, it supports better respiratory health — making indoor air cleaner and easier to breathe.
11. Does it heat or cool a room?
Not directly. Instead, it balances temperature by recycling existing heat, complementing your existing HVAC system for optimal comfort and energy efficiency.
12. Is it suitable for new builds or renovations?
Yes. In new constructions, it integrates easily into HVAC designs. For existing homes, it installs neatly with minimal adjustments.
13. What certifications and standards does it meet?
With over 12 years of experience in HVAC design and manufacturing, every VT501 is tested for safety and performance.
Certified under CE und RoHS standards and verified by independent IEC and EN testing, it meets rigorous requirements for energy efficiency and environmental sustainability.
14. Does it include a warranty?
Yes. All VT501 units are backed by a manufacturer warranty, supported by a responsive technical service team. Warranty terms may vary by model and region.
In summary
The VT501 is more than a ventilation unit — it’s a small but powerful habit of better breathing.
By combining energy efficiency, quiet operation, and continuous filtration, it turns indoor air quality into part of daily comfort. Because good air shouldn’t be a luxury — it should simply be the way your space feels.




