Lo-Carbon Multivent MVDC-MS / MSH
• Recognised in SAP PCDB with best in class Specific Fan Power
• Reduces your carbon footprint
• Fitted with three extract 125 diameter spigots allowing quick connection to ducts
• Complies with Building ADF
• Option of wall, ceiling and loft mounting
• Improved controllability
• Two Switched Live connections
• Fully variable normal, purge and boost speeds
• Ultra quiet
• Integral humidistat (H version)
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With growing concerns about accurate ventilation of properties, the Lo-Carbon Multivent MVDC range offers the option of ‘Close Control’ both in the residential and the commercial sectors. With a DC motor the multi speed Lo-Carbon Multivent is one of the most efficient central extract units available.
The units have 3 fully variable speeds: normal, boost and purge. The digital display allows accurate setting of airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption.
The Multivent H version incorporates a built-in humidity sensor to boost the unit when humidity reaches a certain threshold.
PERFORMANCE:
Sound data
Octave Band (Hz) Sound Power Levels, dB
Model | Speed | Test Mode | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | LwA | SpL @ 3m |
MVDC-MS/H | 20% | Extract | 50.3 | 40.4 | 40 | 33.7 | 28.1 | 21.6 | 18 | 23 | 36.2 | 18.7 |
Breakout | 40.2 | 38.7 | 32.8 | 26.9 | 17.1 | 14.5 | 17.8 | 22.4 | 29.9 | 9.4 | ||
40% | Extract | 58.4 | 52.9 | 52.4 | 46.2 | 41.5 | 30.4 | 20.8 | 23.1 | 48.2 | 30.7 | |
Breakout | 42.7 | 44.7 | 45.3 | 33 | 24.3 | 19.7 | 17.9 | 22.4 | 37.5 | 17 | ||
60% | Extract | 56.4 | 58.2 | 62.5 | 53.9 | 41.3 | 40 | 32 | 25.9 | 56.2 | 38.7 | |
Breakout | 40.1 | 52.1 | 50.2 | 39.2 | 30.6 | 32.2 | 20 | 22.4 | 43.9 | 23.4 | ||
80% | Extract | 60.1 | 63.9 | 67.2 | 63.8 | 48.4 | 46.2 | 41.6 | 35 | 63.1 | 45.6 | |
Breakout | 33.6 | 60.1 | 47.4 | 49.6 | 36.1 | 32.7 | 24.2 | 22.7 | 49.2 | 28.7 | ||
100% | Extract | 76.2 | 79.3 | 71.9 | 69.7 | 53.6 | 51.4 | 47.9 | 42.2 | 69.7 | 52.2 | |
Breakout | 47.3 | 56.6 | 52.5 | 52.7 | 40.7 | 37.7 | 29.7 | 23.7 | 51.7 | 31.2 |
Tested according to BS EN 13141-6:2010. Breakout quoted spherical. Extract quoted hemispherical.
SAP
Exhaust Terminal Configuration | MVDC-MS/H SFP (W/l/s) |
K+1 | 0.15 |
K+2 | 0.14 |
K+3 | 0.16 |
K+4 | 0.18 |
K+5 | 0.21 |
K+6 | 0.26 |
DIMENSIONS:

The MVDC-MS unit from Vent-Axia features three fully variable speeds: normal, boost and purge. The unit can extract up to 118l/s and has 7 years warranty. The digital display allows installers to accurately set airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption.

The MVDC-MS unit from Vent-Axia features three fully variable speeds: normal, boost and purge. The unit can extract up to 118l/s and has 7 years warranty. The digital display allows installers to accurately set airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption. This model incorporates a built-in humidity sensor, so that the unit boosts when humidity reaches a certain threshold.


A wall or ceiling mounted movement detector for use with any domestic Vent-Axia mains voltage product. Also suitable for use with Vent-Axia T-Series controllers on ‘Auto’ setting and ITC controllers on sensor mode. Visionex PIR can be wired for either On/Off or Trickle/ Boost operation.
- Fits any UK single gang mounting box.
- Adjustable timer overrun (5-25 minutes).
- Range of detection up to 10 metres.
- Designed to meet IP43.
- Ambient operating temperature range 0°C to +50°C.
- Maximum load: 2.5 amps/600W inductive. Not suitable for use with lighting.
- Internal use only.
- No switched live required for internal rooms and WCs.
- Double insulated.
- Volt-free contacts.
- Supply voltage 220-240V/1/50Hz.

240VAC 50Hz.
European Patent No: 2298057

An adjustable set point, solid state On/Off sensor. A pullcord provides manual override, indicated by lamp. Adjustable from 65 to 90% relative humidity. Can be wired into controller ‘Auto’ mode connections. Incorporates changeover switch to select low/high speed.
- Setting range 65% - 90%RH.
- Maximum switching load 1 Amp inductive.
- Pullcord override indicated by lamp.
- Ambient operating temperature 0°C to +40°C.
- Dimensions: 87 x 87 x 33mm. (H x W x D).
- Supply voltage 220-240V/1/50Hz.
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ESTIMATED RUNNING COSTS
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Overview
With growing concerns about accurate ventilation of properties, the Lo-Carbon Multivent MVDC range offers the option of ‘Close Control’ both in the residential and the commercial sectors. With a DC motor the multi speed Lo-Carbon Multivent is one of the most efficient central extract units available.
The units have 3 fully variable speeds: normal, boost and purge. The digital display allows accurate setting of airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption.
The Multivent H version incorporates a built-in humidity sensor to boost the unit when humidity reaches a certain threshold.
Technical
PERFORMANCE:
Sound data
Octave Band (Hz) Sound Power Levels, dB
Model | Speed | Test Mode | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | LwA | SpL @ 3m |
MVDC-MS/H | 20% | Extract | 50.3 | 40.4 | 40 | 33.7 | 28.1 | 21.6 | 18 | 23 | 36.2 | 18.7 |
Breakout | 40.2 | 38.7 | 32.8 | 26.9 | 17.1 | 14.5 | 17.8 | 22.4 | 29.9 | 9.4 | ||
40% | Extract | 58.4 | 52.9 | 52.4 | 46.2 | 41.5 | 30.4 | 20.8 | 23.1 | 48.2 | 30.7 | |
Breakout | 42.7 | 44.7 | 45.3 | 33 | 24.3 | 19.7 | 17.9 | 22.4 | 37.5 | 17 | ||
60% | Extract | 56.4 | 58.2 | 62.5 | 53.9 | 41.3 | 40 | 32 | 25.9 | 56.2 | 38.7 | |
Breakout | 40.1 | 52.1 | 50.2 | 39.2 | 30.6 | 32.2 | 20 | 22.4 | 43.9 | 23.4 | ||
80% | Extract | 60.1 | 63.9 | 67.2 | 63.8 | 48.4 | 46.2 | 41.6 | 35 | 63.1 | 45.6 | |
Breakout | 33.6 | 60.1 | 47.4 | 49.6 | 36.1 | 32.7 | 24.2 | 22.7 | 49.2 | 28.7 | ||
100% | Extract | 76.2 | 79.3 | 71.9 | 69.7 | 53.6 | 51.4 | 47.9 | 42.2 | 69.7 | 52.2 | |
Breakout | 47.3 | 56.6 | 52.5 | 52.7 | 40.7 | 37.7 | 29.7 | 23.7 | 51.7 | 31.2 |
Tested according to BS EN 13141-6:2010. Breakout quoted spherical. Extract quoted hemispherical.
SAP
Exhaust Terminal Configuration | MVDC-MS/H SFP (W/l/s) |
K+1 | 0.15 |
K+2 | 0.14 |
K+3 | 0.16 |
K+4 | 0.18 |
K+5 | 0.21 |
K+6 | 0.26 |
DIMENSIONS:
Models

The MVDC-MS unit from Vent-Axia features three fully variable speeds: normal, boost and purge. The unit can extract up to 118l/s and has 7 years warranty. The digital display allows installers to accurately set airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption.

The MVDC-MS unit from Vent-Axia features three fully variable speeds: normal, boost and purge. The unit can extract up to 118l/s and has 7 years warranty. The digital display allows installers to accurately set airflow, ensuring exactly the right ventilation rate. Accurate speed control helps minimise noise and energy consumption. This model incorporates a built-in humidity sensor, so that the unit boosts when humidity reaches a certain threshold.

Accessories

A wall or ceiling mounted movement detector for use with any domestic Vent-Axia mains voltage product. Also suitable for use with Vent-Axia T-Series controllers on ‘Auto’ setting and ITC controllers on sensor mode. Visionex PIR can be wired for either On/Off or Trickle/ Boost operation.
- Fits any UK single gang mounting box.
- Adjustable timer overrun (5-25 minutes).
- Range of detection up to 10 metres.
- Designed to meet IP43.
- Ambient operating temperature range 0°C to +50°C.
- Maximum load: 2.5 amps/600W inductive. Not suitable for use with lighting.
- Internal use only.
- No switched live required for internal rooms and WCs.
- Double insulated.
- Volt-free contacts.
- Supply voltage 220-240V/1/50Hz.

240VAC 50Hz.
European Patent No: 2298057

An adjustable set point, solid state On/Off sensor. A pullcord provides manual override, indicated by lamp. Adjustable from 65 to 90% relative humidity. Can be wired into controller ‘Auto’ mode connections. Incorporates changeover switch to select low/high speed.
- Setting range 65% - 90%RH.
- Maximum switching load 1 Amp inductive.
- Pullcord override indicated by lamp.
- Ambient operating temperature 0°C to +40°C.
- Dimensions: 87 x 87 x 33mm. (H x W x D).
- Supply voltage 220-240V/1/50Hz.