Mechanical Ventilation with Heat Recovery (MVHR) systems are an essential part of modern energy-efficient homes. They are designed to provide a constant flow of fresh air while retaining the heat from the air being extracted, helping to maintain a comfortable indoor environment and reduce energy bills. Despite their efficiency and reliability, MVHR systems, like any mechanical equipment, can develop faults over time. When issues arise, timely repairs are crucial to ensure the system MVHR repairs continues to perform effectively and the indoor air quality remains high.
An MVHR system operates continuously, moving air between rooms and through ductwork while maintaining a careful balance of temperature and humidity. This constant operation puts strain on components such as fans, motors, heat exchangers, and control units. Over time, even small problems can disrupt the system’s performance, causing reduced airflow, inconsistent heating, or unusual noises. Homeowners may notice subtle changes in indoor comfort or sudden spikes in energy costs, both of which can indicate that the system requires attention.
Blocked or dirty filters are a common factor that affects MVHR performance. While regular maintenance includes replacing filters, neglecting them can reduce airflow and place extra stress on fans and motors. Restricted airflow forces the system to work harder, which can lead to overheating or mechanical failure if not addressed promptly. Professional technicians can assess the system accurately, clean or replace components as needed, and restore the unit to its optimal functioning.
Electrical and control faults are another concern. Modern MVHR units rely on sensors and electronic control boards to manage airflow and heat recovery. If a circuit fails or connections loosen, the system may operate irregularly or shut down completely. Handling these issues requires technical expertise, as improper repair can affect safety and overall performance. Experienced professionals ensure that repairs are carried out correctly, restoring the system’s reliability.
Mechanical wear is also inevitable in components that run continuously. Fans, bearings, and other moving parts can become worn or misaligned over time, sometimes producing rattling or humming noises. Although these issues may seem minor at first, they often indicate underlying mechanical problems that can worsen if not repaired. Early intervention prevents more significant damage and helps maintain smooth operation.
The heat exchanger is at the heart of an MVHR system and is critical for energy efficiency. It transfers heat from outgoing stale air to incoming fresh air, reducing the demand on heating systems. If the heat exchanger becomes damaged or blocked, the system loses its ability to recover heat effectively, leading to higher energy usage and reduced comfort. Timely repairs or replacement of the heat exchanger ensure that the system continues to deliver the expected benefits.