HRV 1.35 Q Plus

Mechanical Ventilation with Heat Recovery unit (MVHRBUY NOW)

For use in small to medium sized dwellings

HRV 1.35 Q Plus MVHR Unit
The high capacity HRV1.35 Q Plus continuously running whole house ventilation unit with heat recovery is independently tested by the BRE and maintains an ultra compact size despite its improved airflow performance.

Combining extremely low power consumption and a highly efficient heat exchanger, this unit enhances SAP performance via Appendix Q, and yet remains versatile enough in size to be equally as functional in larger apartments as it is in small to medium sized dwellings.

The Eco versions offer a 100% airflow diverting Summer Bypass, recognised and listed in the UK Product Characteristics Database. They also include intelligent humidity options and can be fitted with the auralite® status indicator (HMB or B Models) or the auramode®aurastat® and aura-tTM controllers (B models only).  

Features & Benefits

  • Highly versatile compact unit
  • Extremely low Specific Fan Power; down to 0.65 W/l/s
  • Highly efficient heat exchanger; up to 88%
  • Accepts 100mm or 125mm diameter ducting, no adaptors required
  • Intelligent frost protection, stepped reduction of supply air rates prevents HRV unit from freezing
  • G3 filters as standard, G4 as an option
  • Fully adjustable boost overrun timer 0-60 minutes; can be used with nonlatching (momentary) switches to prevent unit from being accidently left in boost mode
  • Setback facility to reduce ventilation where local regulations allow
  • Intelligent Summer Bypass and humidity controls
  • Volt free switching control
  • Intelligent controller, quick and easy to commission
  • Lightweight for easy handling
  • Re-usable plastic filter frames
  • Quick fix mounting bracket
  • Patented
  • Independent fan adjustment
  • SUMMERboost® facility
  • Effective in reducing pollutants in the home and improving Indoor Air Quality (IAQ), therefore reducing the risk of Toxic Home Syndrome

Eco HMB Models;

  • Compatible with auralite® status (TP518) indicator
  • Quick access filter doors as standard
  • For further details specific to this product, please see the manual TP408HMB.

Eco B Models;

  • Compatible with aura range; aurastat®auramode®aura-tTM and auralite® (TP519) controllers
  • Duct heater control (requires independent power supply)
  • Available in left and right handed configurations
  • BMS compatible via RS485
  • For further details specific to this product, please see the manual TP418B.

Enthalpy Models;

For explanations of HRV features, click here.


System 4



Exhaust Terminal
Fan Speed
Specific Fan
Efficiency (%)
Kitchen + 1 additional wet room 100% variable 0.65 88
Kitchen + 2 additional wet rooms 100% variable 0.69 87
Kitchen + 3 additional wet rooms 100% variable 0.84 85
Kitchen + 4 additional wet rooms 100% variable 1.04 84
Kitchen + 5 additional wet rooms 100% variable 1.25 84
Kitchen + 6 additional wet rooms 100% variable 1.53 84

Figures taken from the BRE Test Results.

*Number of wet rooms is based on SAP Q test criteria and does not correlate directly with regulatory performance requirements.

Noise Performance - click here for the acoustic test results.




Product Code

HRV1.35 Q Plus HMB Eco auralite® ready - TP408HMB - Energy Rating A

HRV1.35 Q Plus HMB Eco Enthaply auralite ready - TP408HMBE - Energy Rating A

HRV1.35 Q Plus B Eco-Aura controls ready - TP418B/LH (left hand config) or TP418B/RH (right hand config) - Energy Rating A

HRV1.35 Q Plus B Eco-Aura Enthaply controls ready - TP418BE/LH (left hand config) or TP418BE/RH (right hand config) - Energy Rating A

Filters:(Standard and Eco)
XP40032/099 - G3 Filters fitted as standard (In the UK)
XP46022/099 - G4 Filters fitted on request (Standard in Europe)


Conforms to requirements of UK statutory Building Regulations and Technical Standards for Ventilation and BRE 398
SAP Appendix Q tested
Exceeds requirements of Building Regulations Approved Document L (England & Wales)  
EU RoHS Directive compliant
Conforms to requirements of EC council directives relating to Electromagnetic Compatibility and Electrical Safety: 2006/95/EC (LVD)
2004/108/EC (EMC)
EN 60335-1:2002/A2:2006
EN 60335-2-80:2003/A1:2004
CE Marked.
Other non-UK info available on request



Dimensions: 600mm wide x 430mm high (excluding ports) x 285mm deep (295mm with mounting bracket)
Weight: 16kg
Finish: White Paint
Housing: Zintec sheet steel housing, powder coated white
Internals: Expanded polypropylene (EPP)
Heat Exchanger: Polystyrene
Internal insulation: Closed cell foamed Nitrile rubber, class ‘O’ fire rating
Standard filters: Grade G3 synthetic filters, flame resistance to BS5588
Guarantee period: 3 years (UK only)
Electrical: 230V ~ 50/60Hz, 3A fuse
Installation: Install in accordance with Good Practice, such as the Domestic Ventilation Compliance Guide (England & Wales) and the Residential Ventilation Association recommendations Maintenance: Service and filter clean/replacement subject to local environment - see Product Manual

More information / 01206 713800


 Nominal fan performance - Eco Version

HRV1.35 Q Plus performance graph



All units offer 100% variable speed control.
*@FID (0 Pa)