Nuaire MVHR MRXBOX

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.

Green Light

Operating normally. 

Red Light

Indicates motor failure in either the supply or extract fan. 

Double Yellow Flashing Light

The unit is in HX bypass or summer bypass mode. It’s not a fault, but a good sign your unit needs a service.   

Single Yellow Flashing Light

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: 

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-95 WM1
Nuaire
MRXBOXAB-ECO2
Nuaire
MRXBOXAB-ECO3
Nuaire
MRXBOXAB-ECO4
Nuaire
MRXBOXAB-ECO5

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. 

From £1,790.00 (VAT included)
From £1,790.00
(VAT included)

You Supply, We Install

You supply the MVHR unit, and we install it. This includes complete setup and commissioning.

From £380.00 (VAT included)
From £380.00
(VAT included)
Based on 40+ reviews on Google Maps

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

Fully brush out and vacuum all the ductwork. 
Thoroughly clean the fan motors.
Clean the heat exchanger.
Install new and fresh filters.
Commission and balance the system.

FAQs

How do I change an MRXBOX filter? 

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. 

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. In almost all cases, this means that your unit should get serviced immediately.

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 professional to inspect and service the unit.

How long does a full MVHR service take? 

It depends on the size of the system. However, it’s usually around 1 to 2 hours. For a more accurate timeline, you should contact a professional. They’ll be able to quote a service time.

What happens if I ignore my red light on my MRXBOX?

Ignoring a red light could lead to the complete failure of the unit. In some cases, ignoring your red light will result in a full replacement.

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. 

With our tailored solutions, you can ensure a healthy environment while keeping your hard-earned money where it belongs – in your pocket.

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