Nuaire MVHR MRXBOX Ventilation System
Complete Guide
An MVHR system is an excellent solution for homeowners wanting to improve air quality and energy efficiency, especially for airtight homes.
One brand, Nuaire, has a superb MVHR unit, the MRXBOX. This is a highly popular unit among homeowners, landlords, estate agents, and developers.
What is a Nuaire MVHR MRXBOX System
The Nuaire MRXBOX is a compact, efficient MVHR unit designed to be discreetly mounted in utility cupboards, lofts, or eaves. It works by extracting stale air from wet rooms, such as bathrooms, while drawing in fresh air from outside, resulting in fresher indoor air, a more stable indoor temperature, and reduced heating costs.
Understand the Light Indicators
Once a Nuaire MRXBOX is installed, it uses a simple yet effective traffic light indicator system to show how your unit is functioning.
Operating normally.
Indicates motor failure in either the supply or extract fan.
The unit is in HX bypass or summer bypass mode. It’s not a fault, but a good sign your unit needs a service.
Boost mode is active, usually triggered by a bathroom or kitchen switch.
The Importance of Clean Nuaire Filters
For all Nuaire units, your filters should be vacuumed at least every 3 months. They should also be replaced annually.
If you fail to follow this advice, your filters can get blocked. This can cause all types of issues, including:
- MVHR motor failure (red light alert).
- Lingering odours and increased indoor humidity.
- PCB board failure, resulting in total system shutdown.
- Complete loss of airflow through the property.
By staying on top of your MRXBOX’s maintenance, you increase its lifespan, reduce the need for costly repairs, and improve unit efficiency.
Nuaire MVHR Manuals & User Guides
Download official user manuals for the most popular Nuaire MRXBOX MVHR models.
Nuaire MRXBOX Replacement
Nuaire MRXBOX Replacement
Sometimes, MRXBOX repair isn’t possible. This is usually because the unit is out of warranty or spare parts are unavailable. In this circumstance, a full MVHR replacement might be the most cost-effective option.
We Supply and Install
We take care of the entire process from start to finish; you don’t need to do anything.
(VAT included)
You Supply, We Install
You supply the MVHR unit, and we install it. This includes complete setup and commissioning.
(VAT included)
What’s Included in a Nuaire MVHR Service?
Getting your Nuaire MVHR unit services isn’t only good for its lifespan and efficiency. It also ensures that you comply with Part F of the Building Regulations.
FAQs
How do I change an MRXBOX filter?
Switch the unit off. Remove the filter covers and place them on the side. Insert your new filters into the correct openings and push them all the way in. Replace the filters covers and switch on the unit.
What causes a flashing red light on the MRXBOX?
A flashing or solid red light on an MRXBOX unit indicates that there’s a major fault with the supply or extract fan motor. One of our Nuaire service engineers can get this fixed. We will require your serial number
How can I achieve boost mode on the MRXBOX?
Boost mode is activated via installed switches in moisture-prone rooms. For example, bathrooms, en-suites, etc. When this is turned on (indicated by a yellow light), it increases the airflow to remove the excess humidity or odour from the room.
Why is there no airflow coming from my MRXBOX unit?
This could be due to a number of reasons. The filter could be blocked, there could be a motor failure, or the PCB could be faulty. If there’s no airflow, it’s always best to contact a Nuaire service engineer to diagnose and fix the problem.
How long does a full MVHR service take?
On average it takes 2 hours. Deep cleaning the air vents takes 45 minutes. The work on the MVHR unit which includes both motors and the heat exchanger takes 45 minutes. Testing and checking the airflow rates take 30 minutes.
What is the lifespan of an Nuaire MRXBOX MVHR unit?
With regular servicing and filters changes your MVHR unit can last 10 years
Contact Us Today
Whether you need a complete Nuaire MVHR MRXBOX installation or servicing, Cool Runnings LTD is here to help. Contact one of our helpful professionals today and book the next available appointment.
Office
Studio 7, Richmond Road Studios, 119 Richmond Road, Kingston Upon Thames, KT2 5BX.