Domestic
HRV Overview.
‘Shut that door and don’t let the heat out’ is a familiar cry in winter. Heat recovery ventilation, also known as HRV or MVHR offers a solution, it brings fresh air into your home without letting the heat escape. Energywise Ireland are leading suppliers of heat recovery ventilation systems. We design and supply and if required install these systems in homes and commercial buildings.
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Why do we need HRV?
Now days buildings are now a lot more insulated and air tight, so it is vital that a suitable ventilation system is in place. With the current building regulations, installing a heat recovery unit is becoming a necessity rather than a choice. It is important that you have adequate air supply to all rooms and extraction from bathrooms and kitchens. Insufficient ventilation can lead to mould growth, condensation damage and unhealthy living conditions. Our team at Energywise can advise you on the most suitable ventilation system to match your home’s airtightness level. Why not email us your drawings, our experts will design your system for you and provide you advice and a free no obligation quotation?
What is HRV?
HRV or a heat recovery ventilation system remove odour and humid air from kitchens and bathrooms. The same volume of clean, preheated air is supplied to bedrooms and living rooms. As much as 95% of the normally wasted heat is being recovered. Since the energy of the extracted air is transferred to the fresh. This means maximising energy for minimum cost. The filtered and, consequently, cleaner air increases the comfort for you and your family.
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How does heat recovery ventilation work?
- 1. Heat recovery ventilation systems are designed to recover up to 95% of the heat normally lost through open windows, vents and other breakout points.
- 2. Fresh air is continuously drawn into the home via a low energy heat recovery ventilation unit, usually located in the attic or utility area.
- 3. Once passed through the heat exchanger within the HRV ventilation system, the warm, clean, fresh, filtered air is distributed around the home through a series of ducts. Since the energy of the extracted air is transferred to the fresh, cool outdoor air, 95% of the heat is retained. That means no waste of energy.
- 4. Air from wet rooms e.g. bathrooms, kitchens, etc. is continuously extracted and filtered back through the heat recovery ventilation unit. The heat from the extracted air is transferred to the fresh incoming air. HRV can also dissipate warm air from your home in Summer, bringing in cool, fresh air from outside.
- 5. With an auto summer by-pass, the HRV unit automatically controls whether to reclaim heat energy (or not) based on temperature. This ensures that your house does not get over-heated while still remaining air-fresh.
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Main Features & Benefit of HRV
- Constant supply of clean, fresh air for your home
- Relief of allergy problems
- Save 15%-20% on your heating bills
- Comfortable Climate Control
- Heat recovery
- Eliminate Mould & Mildew
- Helps Reduce Radon
- Reduces demand on existing heating system
- No draft sensation – “no hole in the wall”
- Less dust, less spiders as they feed on dust mites
Domestic
WiseAir 350 & 550 HRV systems
The WiseAir 350 & 550 units are equipped with a plate counter-flow polystyrene heat exchanger for heat recovery. The unit condensate is collected and drained to the drain pan under the heat exchanger. The air flows are completely separated in the heat exchanger. Thus smells and contaminants are not transferred from the extract air to the supply air.
Heat recovery is based on heat and/or humidity transfer through the heat exchanger plates. In the cold season supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air. Heat recovery minimizes ventilation heat losses and heating costs respectively.
In the warm season the heat exchanger performs reverse and intake air is cooled in the heat exchanger by the cool extract air. That reduces operation load on air conditioners and saves electricity
Design
- The casing is made of double-skinned polymer-coated steel panels, internally filled with 20, 25, 30, 40 mm (depending on the unit model) mineral wool layer for heat- and sound-insulation.
- The unit is equipped with a hinged service panel to enable convenient access for maintenance or repair operations.
- The spigots are located at the top of the unit and are equipped with rubber seals for airtight connection to the air ducts.
Features
- Air handling units for efficient energy saving supply and exhaust ventilation in flats, houses, cottages and other premises.
- Air handling unitsHeat recovery minimizes ventilation heat losses during cold season and reduces air conditioner load during hot season. for efficient energy saving supply and exhaust ventilation in flats, houses, cottages and other premises.
- Controllable air exchange for creating the best suitable indoor microclimate.
- Compatible with round ∅ 125, 160 or 200 mm air ducts.
Fans
The units are equipped with high-efficient EC motors with an external rotor and a centrifugal impeller with backward curved blades. EC motors have the best power consumption to air capacity ratio and meet the latest demands concerning energy saving and high-efficient ventilation. EC motors are featured with high performance, low noise level and optimum control across the entire speed range. The impellers are dynamically balanced
App
The WiseAir app allows the user to remotely control the Heat Recovery Unit. The app is available on both the App store and the Play store.
