Build Tight & Ventilate Right is the mantra of the Energy Savings Trust, so that's exactly what we offer. MVHR with airtight insulation.
Eliot Warrington, Founder
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Nuaire MRXBOX95-WH1-AB
MVHR, 91% Efficient, Wall Mounted, 110l/s

The MRXBOX95-WH1 is a high duty wall hung MVHR unit with super efficient DC motors for extremely quiet running, maximum product life with minimal running costs.

Designed for properties up to 185sqm floor area with a kitchen and a maximum of 7 additional wet rooms this 'whole house' Mechanical Ventilation & Heat Recovery system combines air supply and extraction in one unit.

MRXBOX95-WH1-AB features include:

  • 5-year Nuaire warranty
  • Up to 91% heat recovery
  • Ultra low fan power
  • SAP Appendix Q eligible
  • Automatic frost protection, air intake disabled if incoming air below zero
  • Integrated humidity sensor to automatically increase air flow when required
  • Automatic summer bypass to disable heat recovery in warm weather
  • Only requires annual filter clean
  • Manufactured in the UK

Solarcrest design, supply, install (optional) & commission MVHR systems for self-builders & retrofitters around the UK. Independent from any one manufacturer we'll provide the ultimate hybrid system that's super quiet, efficient & effective.

Nuaire MRXBOX95-WH1Download MRXBOX95-WH1 brochure
MVHR heat recovery ventilation quoteGet a 'complete system' estimate
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call us for an MVHR heat recovery ventilation quoteCall 01625 423020 for MVHR help

Our price: 875.00 each
(1,050.00 inc.)
Product details ..
Nuaire MRXBOX95-WH1-AB
MVHR, 91% Efficient, Wall Mounted, 110l/s

Code for Sustainable Homes

The efficiency of the Nuaire MRXBOX95 range has been independently verified by the Building Research Establishment (BRE). All units offer between 87% and 92% heat recovery and are listed in the SAP Appendix Q database. The MRXBOX95 units are ideal for new build properties required to meet CfSH level 3 or above.

Download the MRXBOX95-WH1 SAP test data

Building Regulations

All MRXBOX95 units are compliant under Part F & L of the 2010 Building Regulations.

Physical Dimensions

Whole House MVHR units are often bulky items which can be difficult to fit through an existing loft hatch. Thanks to their detachable spigots and compact light weight design the Nuaire MRXBOX95 range are particularly suited to retrofit installations. Please check the brochure for dimensions.

Automatic protection

All MRXBOX95 units feature automatic frost protection. If the outdoor temperature drops below -5C the air intake is disabled and the unit serves as an 'extract only' system until the weather improves. An automatic summer bypass is also available for the MRXBOX95-WH1 unit as a factory fitted optional extra. If the outdoor air temperature exceeds 23C the heat recovery function is automatically disabled. Under these conditions the unit provides fresh filtered air throughout the property to help cool the building in hot sticky weather.


Independent supply & extract fan speed adjustment allows the MRXBOX95 units to be tuned for optimum performance and minimum energy consumption. Solarcrest provide a nationwide supply, installation and commissioning service with BPEC certified installers. We also provide commissioning only, required under 2010 regs, if you prefer to install the system yourself. In which case we can provide installation guidance by telephone and email. Don't forget, draughty trickle vents and airbricks will not be necessary with an MVHR.

Download the MRXBOX95-WH1 installation guide


Unlike many MVHR units the air filters in the MRXBOX95 range only require an annual inspection and clean, normally with a vacuum cleaner. More frequent inspection post-building work is prudent as the filters are likely to pick up more dust than normal. All MRXBOX95 filters are generally very easy to access and can be upgraded to F5 pollen filters if you suffer from hay fever. Other than the filter inspection the MVHR is a fit and forget item. All Nuaire units come with a 5 year warranty for added peace of mind


Solarcrest will assess your floor plans and ventilation requirements in order to recommend the most appropriate MVHR system. We'll then provide accurate budget costs for the supply, installation and/or commissioning of the system to current building regs. Subject to an initial deposit we release our proposed ducting design and air flow specification for consideration by your building inspector. Subject to approval we can normally have the complete system on site within a week.

If you need any further help or advise with your MVHR purchase please don't hesitate to call 0845 833 0388 or email