Decentralised Ventilation: Fresh Air Where You Need It

Decentralised heat recovery ventilation solutions are ideal for retrofitting to existing buildings, or new buildings that have minimal ceiling or roof space available. This is because with a decentralised system there are no ducts to run - there are simply a few in-wall units which talk to each other and simultaneously extract stale air and supply fresh air into the room, while recovering as much energy as possible during the process.

There are two main types of ventilation systems in buildings: extraction-only air systems and supply/extract air systems.

The simplest and cheapest method for ventilation is an extraction-only air system. This is the system you will recognise from almost all houses in Australia - unwanted air is removed via ducts from areas such as the kitchen, bathroom and toilet. But the air that is extracted and pushed out from the building must then be replaced somehow... and this replacement air from outside has traditionally just seeped its way into the building via the small openings and cracks around windows, doors, ceiling & roof, etc.

Now in theory this simple and cheap way works, but the air that is getting sucked into the house through all the openings and cracks is costing us money. In winter this air is cold, and therefore we have to pay to heat it up... and the same is true in summer - the air coming in is hot, and we have to pay to cool it down.

But unlike an extraction-air system, a supply/extract system first strips the unwanted extract air of its thermal energy, and then it transfers the majority of this energy to the fresh air that is being supplied into the building. And to achieve this a pair (or pairs) of decentralised heat recovery ventilation units can help you.

So for example in winter the outside air may be 7°C, but inside your home it's a comfortable 21°C. A simple extraction-only air system would exhaust to the outside 21°C air from your house, and then draw in 7°C air from outside... which can be uncomfortable for those inside, but most of all costs you money to heat up this cold air to 21°C again. However, a supply/extract air system would in this situation extract the heat from the stale 21°C air first, and only then exhaust it at ~9°C. The fresh incoming cold air from outside would be at 7°C before it passes through the special crossflow heat exchanger, but then it's supplied into your home at 19°C... meaning you don't experience discomfort and you dramatically save on your heating bills, while having high quality (and filtered) fresh air supplied throughout your home.

It's important to remember that heat recovery ventilation systems do not actively heat or cool your home - they only help you keep more of the energy you already have in your home while enjoying clean fresh air and minimising your energy bills. (Some HRV systems do however have night purge, which during summer allows you to pump out any warm air from inside your home, and replace it with cool night air)

Decentralised Heat Recovery Ventilation systems are great for:

  • Energy efficient homes that don't want to waste energy (and pay for the wasted energy too)
  • Air-tight homes that require fresh air supply (to keep O2 levels right, and minimise CO2 and other pollutant build-up)
  • For people and families that suffer from asthma and allergies (the fresh air is filtered before it enters your home)
  • Reducing the potential of mould and other pathogens (replacing the air within the building and reducing moisture build-up)

Energy efficient homes that don't want to waste energy (and pay for the wasted energy too)
Air-tight homes that require fresh air supply (to keep O2 levels right, and minimise CO2 and other pollutant build-up)
For people and families that suffer from asthma and allergies (the fresh air is filtered before it enters your home)
Reducing the potential of mould and other pathogens (replacing the air within the building and reducing moisture build-up)

EnergyLabs offers you ready to go and complete installation kits - making it easy for you to install (with no missing parts) and get your heat recovery ventilation system up and running:

  • 1-PAIR decentralised heat recovery ventilation system kits are suitable for habitable floor areas of up to 70m2 (2x units total).
  • 2-PAIR decentralised heat recovery ventilation system kits are suitable for habitable floor areas of up to 140m2 (4x units total).
  • 3-PAIR decentralised heat recovery ventilation system kits are suitable for habitable floor areas of up to 210m2 (6x units total).
  • 4-PAIR decentralised heat recovery ventilation system kits are suitable for habitable floor areas of up to 280m2 (8x units total).

Faq

HOW FAST DO YOU SHIP THE ORDERS?

EnergyLabs processes all orders within one day, and deliveries usually occur within 3 – 5 business days.

WHERE DO YOU SHIP FROM?

EnergyLabs ships from distribution centres in all states and mainland territories (exc. NT)

HOW MUCH IS SHIPPING?

Shipping is free to Australian Capital Cities (Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra, Hobart) excluding Darwin. For shipping outside of capital cities we offer delivery at a flat rate of $200.

WHAT ARE THE GUARANTEES?

All products offered by EnergyLabs come with manufacturer’s warranties that generally vary from 2 to 5 years depending on the product and brand.

For your piece of mind only reputable equipment that we know to be of good quality and reliable are offered by EnergyLabs.

CAN I ORDER DELIVERY FOR A SPECIFIC DATE?

Yes, we will do our best to deliver on a specific date, if you request it, but unfortunately cannot guarantee it.

DO YOU PROVIDE INSTALLATION TOO?

EnergyLabs parent company Euroheat Australia offers installation in Perth and greater WA. EnergyLabs is happy to recommend good installers in your home city or state.