Mechanical Ventilation With Heat Recovery

Zehnder Mechanical Ventilation and Heat Recovery

Air Craft is dedicated to providing all kinds of ventilation solutions through its association with world leading manufacturers. Whilst today’s well insulated homes may be good for energy bills, they are not necessarily so good for health. Indoor air can be as much as five times more polluted than outdoor air, with the problem arising from a lack of air renewal with windows and doors closed, walls and ceilings sealed by vapour barriers. Any sign of moisture on the inside of glazing is seen as a symptom of an unsatisfactory indoor climate.

It is vital to maintain proper humidity levels in the home as too little can cause personal discomfort issues whilst too much can make a home a breeding ground for mould and mildew in the whole property or in certain rooms at specific times of the year.

The UK government’s 2021 proposals relating to Parts Land F of the Building Regulations, ahead of the 2025 Future Homes Standard, make well designed Mechanical Ventilation with Heat Recovery (MVHR) systems a very important proposition. On the road to zero carbon homes, they can deliver best practice air tightness, optimum indoor air quality and maximum energy efficiency.

Zehnder MVHR provides continuous 24-hour whole house ventilation and heat recovery. Extracting stale, moist air from wet rooms, the heat exchanger recovers this energy into the incoming fresh air. This is then supplied into habitable rooms. A summer bypass allows the fresh air to be supplied without heat recovery.

Zehnder MVHR solutions

As Air Craft’s preferred choice for energy efficiency and the provision of excellent air quality, Zehnder MVHR solutions are Passive House accredited and compliant with System 4 of the current Building Regulations. Units ensure balanced whole house ventilation and a year-round comfortable, healthy and energy efficient indoor climate. Zehnder’s range can be customised to meet the individual requirements of any residential building, from smaller apartments through to large, luxury houses in both new build and renovation projects.

A Passive House must always have an integrated MVHR system as only the highest quality of ventilation is acceptable to ensure stringent humidity control and for air tempering. The Passive House comfort standard means that only those components that have been rigorously tested and approved can be used within the building. ComfoAir and ComfoPost air to water exchangers meet these requirements.

The ultra quiet Zehnder ComfoAir Q heat recovery system provides 100% of the ventilation requirements to a home with filters measuring the volume of air that travels through, always looking to keep optimal performance. Air quality is constantly measured using optional CO2 sensors. This automatically guarantees a constant balance of supply air and extract air volumes. The supply air volume is adjusted to the air quality in the individual rooms and ensures a healthy indoor air climate.

ComfoAir Q’s innovative heat exchanger design achieves a world leading 96% performance level and provides 100% of the ventilation requirements of a home. Humidity levels are controlled much better than conventional MVHR systems with the Enthalpy Heat Exchanger which recovers both the thermal and the latent energy from stale air extracted from wet rooms around the home which would otherwise have been wasted. This extra energy is transferred into the incoming fresh air stream before being supplied to habitable rooms. By choosing Enthalpy rather than a standard heat exchanger, the unit becomes an Energy Recovery Ventilation system (ERV).

Information about our Mechanical Ventilation & Heat Recovery

What our Customers Say

I can finally enjoy my home as intended. I can monitor and control the air conditioning from anywhere. This saves me wasting energy when I am away from home and the weather suddenly changes.

Claire Jordan, Homeowner.

What our Customers Say

For me it is about energy conservation and reducing our carbon footprint...Air Craft has helped us achieve that.

James Miskin, Property Owner

What our Customers Say

We are delighted with the air conditioning installation and with the all round expertise that Air Craft demonstrated throughout this successful project,

Homeowners, New Forest.

What our Customers Say

Without prejudice, Air Craft have been outstanding throughout the process of changing the heating system in our home and we highly recommend them.

Kevin Dew, Redlynch.

What our Customers Say

It is a big step to move to a heat pump from a conventional system. Air Craft will design the most efficient and cost effective solution. Their installation staff care about their work and we believe we chose the best company for our heat pump.

Bob Ashworth, Homeowner.

What our Customers Say

We wanted the most comfortable indoor air environment and the ability to maintain a consistent temperature all year round. Air Craft delivered.

Mark Bettridge, Homeowner.

What our Customers Say

As well as a first class installation service, Air Craft's aftercare and personal service is also very reassuring.

Dr Charles King, Oxford.

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