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DHV-25N MVHR Unit with Summer Bypass and Frost Protection

SKU: HR1256 Categories: , ,

£1,245.99 inc. VAT

Only 8 left in stock (can be backordered)

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Easy to order & install
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Free UK Delivery Over £200
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Description

ULTRA LOW POWER CONSUMPTION

Reduce bills & save the environment with our highly efficient heat exchanger - works very quietly & efficiently

IMPROVED AIR QUALITY

Remove stale air & reduce humidity, black mould growth, & condensation, whilst recovering heat energy by installing our reliable heat recovery system, with additional Auto-Bypass & Preheat functions

EASY TO USE & MAINTAIN

Includes LCD Controller & full installation instructions. Filters are easy to access & washable. Heat exchangers are removable for easy cleaning.

COMPACT UNIT DESIGN

Specially designed for use in small properties, up to 148m² on normal speed.

HIGH QUALITY & TESTED PERFORMANCE

All Ventilation Megastore products are tested so you can trust that you’re buying the best heat recovery ventilation unit on the market

DESCRIPTION

WHAT IS HEAT RECOVERY VENTILATION & HOW DOES IT WORK?

Heat Recovery Ventilation (also known as HRV, or mechanical MHVR) is an energy recovery system. Warm, moist air is extracted from the property & replaced with fresh air. Heat energy from the property is recovered & transferred to fresh incoming air via a heat exchanger. Saving energy & money. 

WHY DO WE NEED IT

HRV systems provide a property with fresh air, while saving much of the energy usually wasted with traditional extractor fans. They protect the building fabric by reducing condensation, they promote energy efficiency, & improve the internal environment.

As new buildings are made intentionally more airtight they require a ventilation system to assist fresh air ventilation. Trickle vents or opening a window provide fresh air, but heat will be lost in the winter or gained in the summer. 

THE BEST SYSTEM ON THE MARKET

Performing to UK standards, all Ventilation Megastore products are tested so you can trust that you’re buying the best ventilation system on the market.

ULTRA COMPACT & HIGHLY EFFECTIVE

Our unit is specially designed for use in small properties up to 148m2 on normal speed. The unit is compact, easy to install, & provides a low-cost solution.

Preheat activates when the incoming air is more than 2 degrees cooler than the internal air temperature.

Auto-Bypass operates when the incoming air temperature reaches 20 degrees. When this happens, exhaust air is extracted and no heat recovery takes place.

If you have any questions, contact our UK-based team & we will be happy to help!

Physical Properties

Packaged Dims (mm): 1125 x 670 x 345

Unit Dims (mm): 1075 x 625 x 270

Weight (kg): 30

Filter Size (mm): 530 x 180 x 5

Spigot Size (mm): 150

Technical Properties (measured at unit):

Airflow (m³/h) Purge Speed: 250

Airflow (m3/g Boost Speed: 210

Airflow (m³/h) Normal Speed: 160

External Static Pressure (Pa): 100 / 60 / 30

Noise Level (dBA): 34

Power Consumption (W): 90 / 60 / 40

Efficiency %: 87 / 83 / 76

Preheat Capacity (KW): 1.5

HRVU are easy to install, planning is helpful. Choose the right size of HRV, for your property & room layout as the output for individual rooms will be affected by resistance losses from the type, length, & complexity of ducting.

We recommend that you select a unit that covers your ventilation needs on the normal power setting,  providing the opportunity to boost the fan speed to accommodate changes in internal conditions.

Ventilation Megastore offers a range of ducting options & can advise on best practice. 

If any regulation compliance is required (e.g. new build properties), it is the installers responsibility to ensure suitable system performance.

Ventilation & Conservation of Fuel and Power are covered by Part F & Part L respectively of Schedule 1 to The Building Regulations 2010

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Shipping Information

Free Shipping to the UK mainland on orders over £200

Shipping to Northern Ireland, Isle of Man, Isle of Wight, and Scilly Isles: £75.

Shipping to Republic of Ireland, Guernsey, Jersey, and the Scottish Highlands & Islands: £100
Shipping Policy

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