Komfovent vs Vallox vs Flexit — which ventilation unit to choose?

Komfovent, Vallox, and Flexit are three ventilation equipment manufacturers that cover the majority of ventilation installations in Estonian private houses and apartments. All have strengths and weaknesses — the right choice depends on the size of the house, the need for automation, and the budget.

Quick comparison

	Komfovent	Vallox	Flexit
Origin	Lithuania	Finland	Norway
Efficiency (best model)	up to 94%	up to 91%	up to 87%
Warranty (unit)	5 years	5 years	5 years
Price class	€€	€€€	€€
Automation	C6, M5 — very advanced	MyVallox — medium	CI 600 — simple
Noise	26–34 dB	27–36 dB	29–38 dB
Heat exchanger	Counter-flow plate / rotor	Counter-flow plate	Counter-flow plate
Spare parts availability EE	Excellent	Good	Good

Komfovent — Baltic market leader

Komfovent, manufactured in Lithuania, has become the Estonian market leader in the last 10 years. The manufacturer places great emphasis on user-friendliness and control.

Pros

• C6 and M5 automation is the most flexible on the Estonian market (mobile app, Modbus, BACnet, KNX).
• Domekt R series efficiency up to 94% — top of the market.
• Wide range of models from apartments to large commercial buildings (200–8,000 m³/h).
• Availability of spare parts and service within 24–48 hours.
• Good price/quality ratio.

Cons

• Changing filters on certain models in tight spaces can be more difficult.
• For beginners, the menu structure of the C6 panel may seem complicated at first glance.

Recommended for

Private houses 100–300 m², apartment buildings, commercial buildings, and anyone who wants good automation and good warranty support. Typical models: Domekt R 200, R 300, R 450.

Vallox — Finnish build quality

Vallox is a brand operating in Finland since 1972, known for its strong mechanical build quality and quiet operation.

Pros

• Particularly durable casing and high-quality components (lifespan 20+ years).
• MyVallox app is simple and intuitive.
• Quiet — Vallox 145 operates at 27 dB.
• Optimized for Finnish climate — reliable in cold winters.

Cons

• Price 10–25% higher than Komfovent.
• Automation is less flexible than Komfovent — fewer integration possibilities.
• Narrower model range — strong in the private house and apartment segment, but no powerful units for large commercial buildings.

Recommended for

Private houses that value quietness, simplicity, and long lifespan. Vallox 145 MV and Vallox 245 MV are the best-selling Vallox units in Estonia.

Flexit — Norwegian design and reliability

Flexit is of Norwegian origin and focuses on residential homes and smaller apartments. The design is minimalistic, operation is simple.

Pros

• Easy installation and use — suitable for first-time ventilation unit owners.
• More affordable price range — often 15–20% cheaper than Komfovent.
• Tested in the Scandinavian climate, reliable.
• Nordic series efficiency up to 87%.

Cons

• Efficiency is slightly lower than Komfovent and Vallox top models.
• Automation is basic — external solutions must be added for more complex integrations.
• No high-power models for large buildings.

Recommended for

Apartments and private houses up to 180 m², where simplicity and affordable price are priorities. Flexit Nordic S2/S3 and Flexit Roomie are the most popular models.

Which one to choose — use cases

Apartment 50–80 m²

Recommendation: Komfovent Domekt R 200 or Flexit Roomie. Both fit into the ceiling or utility room, noise level below 30 dB.

Private house 120–180 m²

Recommendation: Komfovent Domekt R 300 (best price/functionality ratio) or Vallox 245 MV (quieter and more durable, but more expensive).

Private house 200–280 m²

Recommendation: Komfovent Domekt R 450 or Vallox 350 MV. Both cover air volumes of 350–500 m³/h.

Large private house 300+ m² or apartment building

Recommendation: Komfovent Verso series. Flexit and Vallox do not offer strong models in this class.

Budget constraint

Recommendation: Flexit Nordic S2 + simple control. You get quality Scandinavian construction 15–20% cheaper.

Warranty and service

All three manufacturers offer a 5-year unit warranty on the Estonian market. The difference lies in the availability of spare parts and speed of service:

• Komfovent — spare parts mostly in stock, service time 24–48 hours.
• Vallox — spare parts ordered from Finland, service time 3–5 days.
• Flexit — spare parts ordered from Norway, service time 5–7 days.

We recommend concluding an annual maintenance package in any case — this extends the unit's lifespan and keeps the warranty valid.

Summary

If you choose in one sentence: Komfovent is the best all-rounder, Vallox if you value quietness and durability, Flexit if the budget is limited or you need a simple solution.

We have been working with all these brands for over 15 years. Do you want a price quote for a specific model? Contact us and we will help you choose the most suitable system for your building.