| Model | ComfoAir Flex250 | ComfoAir Flex350 | |
| Type of system | High-quality PH MVHR | High-quality PH MVHR | |
| Recomm. max. floor area | [m2] | 161 m2 | 226 m2 |
| Max. air flow @100Pa | [m3/h] | 250/ 69 l/s | 350/ 97 l/s |
| Min. air flow | [m3/h] | 100/ 28 l/s | 122/ 34 l/s |
| Recommended air flow | [m3/h] | 100-195/ 28-54 l/s | 149-281/ 41-78 l/s |
| Orientation | ceiling, spigots side | ceiling, spigots side | |
| Performance | ***** | ***** | |
| Heat Recovery (Passive H) | % | 89% | 87% |
| Heat Recovery (SAP) | % | 88-95% | 89-95% |
| Humidity Recovery | % | X | X |
| Specific Electric Power (PH) | [Wh/m3] | 0.25 | 0.26 |
| SFP (SAP) | [W/l/s} | 0.68-1.03 | 0.59-1.16 |
| SAP Kitchen + max. wet rms | K+6 | K+7 | |
| Noise | **** | *** | |
| Breakout noise @3m @60% | [dB(A)] | 31.7 | 36.5 |
| Breakout noise @3m 60m3/h | [dB(A)] | 16 | 18 |
| Breakout noise @3m 90m3/h | [dB(A)] | 19 | 21 |
| Breakout noise @3m 120m3/h | [dB(A)] | 22 | 23 |
| Breakout noise @3m 150m3/h | [dB(A)] | 24 | 25 |
| Breakout noise @3m 180m3/h | [dB(A)] | 27 | 28 |
| Breakout noise @3m 210m3/h | [dB(A)] | 30 | 31 |
| Breakout noise @3m 240m3/h | [dB(A)] | 33 | 34 |
| Breakout noise @3m 270m3/h | [dB(A)] | X | 36 |
| Technical | |||
| Spigot Size | [mm] | 160 internal | 160 internal |
| Weight | [kg] | 38 | 38 |
| Materials internal | EPP/ ABS | EPP/ ABS | |
| Type of heat exchanger | HRV | HRV | |
| Condensate connection | [mm] | 32 | 32 |
| Filter grade (*optional) | G4/ F7* | G4/ F7* | |
| Frost protection | [°C] | integrated pre-heater* | integrated pre-heater* |
| Peak winter performance | Yes, with pre-heater* | Yes, with pre-heater* | |
| Max power pre-heater* | [W] | 1700 | 1700 |
| Max. power cons. w/o pre-h. | [W] | 119 | 193 |
| Motors, volume flow constant | EC, indirect VFC | EC, indirect VFC | |
| Summer bypass | [100%] | Yes, modulated | Yes, modulated |
| Controls | |||
| Type of controller | Int. LAN | Int. LAN | |
| App control/ monitoring | App control | App control | |
| Boost activation | Auto (needs activ.) | Auto (needs activ.) | |
| Humidity sensor | Integr. spike sensor | Integr. spike sensor | |
| CO2 sensor | 4x possible* | 4x possible* | |
| BMS capability | Yes, 0-10V input | Yes, 0-10V input | |
| Fire alarm integration | Yes | Yes | |
| Fault indicator | with app | with app | |
| Heating & cooling options | Post heater/ cooler | Post heater/ cooler | |
| Cooling module | X | X | |
| Max. cooling output | [W] | X | X |
| Max. heat output | [W] | X | X |
| Integrated controls | X | X | |
| Refrigerant | X | X | |
| Hot water tank | X | X | |
| Servicability | Made in | NL | NL |
| All parts replaceable | Yes | Yes | |
| Fan bearings exchangeable | Yes | Yes | |
| Warranty – free of charge | [years] | 2 | 2 |
| Warranty – extended | [years] | 5 (through us) | 5 (through us) |
Please note, that the Flex unit comes as a right-hand version by default. It can be changed to a left hand version through the settings menu and – if installed – swapping the defrost -pre-heater within the MVHR unit.
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