Mechanical Ventilation with Heat Recovery (MVHR) is a popular ventilation solution for homes and buildings, providing a way to regulate indoor air quality, control temperature and humidity, reduce energy consumption, and meet Building Regulations. However, like any technology, MVHR systems have their own set of disadvantages that homeowners and building managers should be aware of before making a decision. In this article, we'll explore some of the disadvantages of MVHR systems.
One of the main disadvantages of MVHR systems is their high upfront cost. Compared to other types of ventilation systems, such as natural ventilation or mechanical extract ventilation, MVHR systems can be significantly more expensive to install. The cost can vary depending on the size of the property, the complexity of the installation, and the specific MVHR system chosen. For homeowners on a tight budget, the high cost of MVHR systems may be a significant barrier to adoption.
Compare MVHR to Natural Ventilation in our article MVHR vs Natural Ventilation
Another potential disadvantage of MVHR systems is their maintenance requirements. Like any mechanical system, MVHR systems require regular maintenance to operate efficiently and effectively. This includes cleaning and replacing filters, inspecting ductwork and grilles, and checking for any signs of wear or damage. Failure to properly maintain an MVHR system can result in reduced performance, increased energy consumption, and potential health risks from poor indoor air quality.
Learn how to clean your MVHR Filters in our article How Do You Clean MVHR Filters?
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MVHR systems can produce noise, which may be a disadvantage for some homeowners. The sound can be especially noticeable if the MVHR unit is located near living areas, such as bedrooms or living rooms. While some manufacturers have made efforts to reduce the noise produced by their systems, it's important to consider the noise levels when choosing an MVHR system.
MVHR systems require space for ductwork, grilles, and the MVHR unit itself. Depending on the size of the property and the layout, this may be a challenge. For example, in smaller properties with limited attic or basement space, an MVHR system may be difficult to install.
MVHR systems are designed to recover heat from exhaust air, which is advantageous in cooler climates where heating is required for most of the year. However, in warmer climates, the use of an MVHR system may be less effective. The system may require additional cooling to maintain comfortable indoor temperatures, which can increase energy consumption.
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We only sell MVHR! So you might be asking yourself why we wrote this article. We believe it's important for you to have all of the information you need to make an informed decision, even if that means you learn that MVHR is not for you. MVHR systems offer many advantages, they are not without their drawbacks. The high upfront cost, maintenance requirements, potential noise, space requirements, and climate considerations should all be taken into account when considering an MVHR system. Homeowners and building managers should weigh the benefits against the disadvantages and consider their specific needs before making a decision.
