What is an MVHR System? Understanding Its Function & Clearing Up Misconceptions
Mechanical Ventilation with Heat Recovery (MVHR) systems are increasingly popular in modern homes and commercial buildings, especially those designed to be airtight for energy efficiency. Despite their rising popularity, there are still plenty of misconceptions surrounding MVHR systems. In this post, we’ll explain what an MVHR is, how it works, and address some of the most common misunderstandings.
What is an MVHR System?
An MVHR system is a highly efficient ventilation system that provides fresh air to a property while simultaneously extracting stale air. The key feature of MVHR systems is their ability to recover heat from the outgoing air and transfer it to the incoming air, reducing energy loss and contributing to a comfortable indoor environment.
How Does an MVHR System Work?
Extraction of Stale Air: Stale, moisture-laden air is drawn out of areas such as kitchens, bathrooms, and utility rooms.
Heat Recovery Process: Before the stale air is expelled outside, it passes through a heat exchanger where up to 90% of the heat energy is transferred to the incoming fresh air.
Fresh Air Supply: Fresh, filtered air is then distributed to living areas such as bedrooms and living rooms.
Benefits of an MVHR System
Improved Indoor Air Quality: Removes moisture, pollutants, and allergens, providing a healthier environment.
Energy Efficiency: Reduces heating costs by recovering heat from outgoing air.
Controlled Ventilation: Provides consistent airflow, avoiding drafts and maintaining a balanced indoor climate.
Common Misconceptions About MVHR Systems
MVHR Systems Make Your Home Too Dry:
While MVHR systems do remove moisture from stale air, they do not excessively dry out your home. Instead, they help maintain a balanced and comfortable humidity level.
They Are Only Suitable for New-Build Properties:
While MVHR systems are most commonly installed in new, airtight buildings, they can also be retrofitted into older homes if properly planned and designed.
They Are Noisy and Unpleasant to Live With:
High-quality MVHR systems are designed to be quiet and unobtrusive. Proper installation and maintenance ensure that noise levels remain low.
They Require Constant Maintenance:
Maintenance requirements are minimal. Routine filter changes and periodic servicing are enough to keep the system functioning efficiently.
MVHR Systems Are Expensive to Run:
While the initial installation cost can be high, the operational costs are low due to the system’s energy-efficient design. The savings on heating bills often outweigh the running costs over time.
When Should You Consider an MVHR System?
If you are building a new home, renovating an existing property, or looking to improve indoor air quality and energy efficiency, an MVHR system is worth considering.
At HIU Breakdown and Repairs, we can assess your property to determine if an MVHR system is the right solution for you. We also offer MVHR Servicing and Maintenance to keep your system running smoothly.
