Ventilation & Heat Recovery
MVHR (Mechanical Ventilation with Heat Recovery) is the most energy-efficient ventilation system that maintains a high level of indoor air quality by continuously providing fresh filtered air and extracting the stale and polluted air from the area it serves.
How MVHR Works?
Extract Air:
The system pulls stale, moist air from rooms like bathrooms, kitchens, and utility areas.
Supply Air:
At the same time, it brings in fresh air from outside.
Heat Recovery:
The heat exchanger inside the MVHR unit transfers the heat from the outgoing air to the incoming fresh air, without mixing the two airflows. This pre-warms the fresh air entering the building.
Filtered Air:
The incoming air is also filtered, improving indoor air quality by removing dust, pollen, and pollutants.
Benefits of Commercial Ventilation and Heat Recovery (MVHR) Systems:
Implementing Mechanical Ventilation with Heat Recovery (MVHR) in commercial buildings can significantly improve air quality, reduce operational costs, and support sustainability goals.
MVHR Systems Benefits
Energy Efficiency and Cost Savings
MVHR systems recover up to 90% of the heat from extracted air, reducing the need for additional heating.
- Lower energy bills: Less reliance on traditional heating systems.
- Reduced HVAC system load: Extends the lifespan of heating and cooling equipment.
- Energy efficiency compliance: Helps meet building regulations such as Part L (UK), EPBD, and LEED certifications.
Improved Air Quality
Modern commercial buildings are often sealed tightly to improve energy efficiency, but this can lead to poor indoor air quality (IAQ). MVHR ensures a consistent supply of fresh, filtered air.
- Healthier work environment: Reduces CO₂ levels, airborne pollutants, dust, and allergens.
- Filtered air: Removes outdoor pollutants like pollen, vehicle emissions, and particulate matter.
- Reduced sick days: Better IAQ contributes to improved employee well-being and productivity.
Temperature Regulation and Comfort
MVHR systems maintain a consistent indoor temperature by recovering heat from outgoing air and using it to warm incoming air.
- Pre-warmed fresh air in winter: Reduces heating demand.
- Cooler air in summer: Systems with bypass functions can bring in cooler night air.
Humidity Control and Condensation Prevention
High humidity levels can lead to condensation, mold, and damp, which can damage building structures and affect occupant health.
- Balanced humidity: Prevents condensation and moisture-related issues.
- Protects equipment and interiors: Ideal for spaces with sensitive equipment (e.g., data centers, labs).
Sustainability and Carbon Reduction
MVHR systems help reduce a building's carbon footprint by lowering energy consumption.
- Supports Net Zero targets: Essential for companies aiming to reduce Scope 1 and Scope 2 emissions.
- Qualifies for green building certifications: BREEAM, LEED, and WELL certifications.
- Future-proofing: Helps meet stricter energy efficiency regulations.
Compliance with Building Regulations
In many countries, ventilation and heat recovery systems are required to comply with building codes and energy performance standards.
- Part L and Part F (UK): MVHR helps meet ventilation and energy efficiency standards.
- EPBD (EU): Complies with the Energy Performance of Buildings Directive.
- WELL Building Standard: Contributes to employee health and well-being.
Return on Investment (ROI)
Though MVHR systems require upfront investment, the long-term savings in energy costs and compliance penalties make them highly cost-effective.
- Payback period: Typically 3-7 years, depending on building size and usage.
- Increased asset value: Energy-efficient buildings are more attractive to investors and tenants.
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