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Smartvent Synergy 190S (Balanced pressure)

Smartvent Synergy 190S (Balanced pressure)

  • Available only in The Bay of Plenty, Waikato and Auckland.  Installation costs are additional and can vary depending on requirements.  Click on the 'Enquire Now' button below for a Free no obligation assessment & quote.  Free or subsidised installations available when purchased as a combo deal with either our GreenWool insulation or Heat pumps.

NZ$3,878.40 (inc. GST)



  • Reduces condensation and keeps in the heat
  • SmartVent Synergy is a True Heat Recovery system capable of extracting stale, moisture-laden air from inside your home and bringing in fresher, drier air simultaneously
  • Synergy is a completely balanced system recovering and re- using up to 90% of the heat from the warm air extracted from within your home. An extremely energy efficient way to re-use heat you have already paid for
  • A SmartVent Synergy True Heat Recovery system will use the warm air you have paid for to heat the living room for example, pass it through an advanced heat recovery converter and warm the fresh dry air from outside before moving it to rooms that need it most
  • The high quality F7 filter captures 80 – 90% of 0.4 micron particles including dust, pollens, allergens and mould spores
  • Our Heat Recovery Ventilation system is very different from other HRV systems because it is a balanced system; capable of extracting stale, moisture-laden air from inside your home and bringing in fresh drier air simultaneously
  • Unlike paper cores, Synergy’s polymer core is better suited to New Zealand climatic conditions. With no moisture transfer between incoming and outgoing air, humidity is reduced. Synergy cores are tested at 90% efficiency to European Standard EN308
  • The unique acoustic insulated ducting used in all SmartVent Synergy systems ensures ‘whisper quiet’ air transfer and better air temperature retention
  • Stylish flat diffusers inset in your ceiling for an unobtrusive look are fully adjustable for balanced airflow into each room

Intelligent Control System

  • Positioned in your heated room (usually the lounge) the colour touch screen controller is included with every SmartVent Synergy and offers state-of-the-art technology with real time readings for total system control at your fingertips

Combined with a Heat Pump

  • Heat pumps are one of the most common heat sources used in New Zealand
  • Nearly all heat pumps only re-circulate the existing moist air in a home, but do not bring in fresh dry air. This results in a build-up of moisture in the home
  • For this reason the combination of a heat pump and Synergy is a very effective total home heating and ventilation system
  • Synergy can also re-use cold air from air conditioners for a cool recovery solution in hot summer months

Will dust and other contaminants enter my home from the roof or outside?

  • No, Smart-Vent systems use high-grade filters to greatly reduce harmful particles entering your home. A high quality F7 hospital-grade filter captures 80-90% of fine pollens, dusts and allergens from the air, making it cleaner and safer to breathe. This level of filtration is a must for families with asthma and allergy sufferers

How does the Smart-Vent system actually work?

  • In winter your roof space is generally drier and sometimes warmer than inside your home. This system is designed to draw this drier air, filter it and distribute via diffusers around your home. This system is controlled by the temperature in the roof space and when it is within the set temperature range the system will draw air from your roof space. This drier air mixes with the air in the house and reduces the level of moisture in the air of the house. At the same time it pressurises the house causing air to be forced out through gaps under doors, around windows etc

What happens to the system outside of these set temperatures?

  • When your roof space temperature falls below your lowest set temperature (set on the controller by yourself or the system default setting of 10 degrees) your system will either turn the fan to low speed or off (set on your controller by yourself) if you do not have a heater installed. When the temperature in your roof space rises above your set highest temperature (set on your controller by yourself or by using the system default setting of 25 degrees) your system will do one of two things. It will either change the damper over or start bringing cooler air in from outside (if you have the summer feature installed) or turn the fan to low speed or off (set on your controller by yourself)

What does the building code recommend for Home Ventilation Systems?

  • The NZ Building code requires a minimum of 0.35 Air Changes per hour (ACH). Smart-Vent systems are designed to provide at least 1 ACH in optimal conditions

What does the Smart-Vent system cost to run?

  • The most common model (SV04S, 4 outlet system with summer feature) will cost as little as 15c per day to run. This calculation is based on a $0.14 kilowatt/hour electricity cost and is subject to consumer settings and duty ratio

How much does the heater cost to run?

  • The Smart-Vent 1kW heaters will cost 17c per hour to run, based on a $0.17 kilowatt/hour electricity cost

Can I install this in my 2 or 3 storey house?

  • Yes, Smart-Vent systems can be installed into a multi-storey house. Best results are achieved by spreading the inlets between the storeys. The back of cupboards, wardrobes or other available voids would need to be used to run ducting down to lower floors

Where should the outlets go?

  • We recommend that you place an outlet in your living areas and bedrooms. With regard to placement within each room, the outlets should be located away from any windows and doors so the air has time to circulate within the room prior to being expelled

How long does it take to install a system?

  • A four outlet system without the summer feature should take approximately 3-4 hours to install. While a four outlet system including the summer feature should take approximately 5 hours to install. Please note: these times are based on an experienced electrician installing Smart-Vent into a single storey home with a large roof space

Once installed how often would I need to change my filter?

  • The system calculates % usage of the filter based on the fan speed and time in operation. The controller will keep you up to date with filter % usage and advise you when the filter needs changing. A Smart-Vent system operating on medium speed will take approximately 1 year before reaching 100% filter usage. Personal fan speed preferences will affect the % filter usage rate.

Synergy Heat Recovery:

How does the Synergy system actually work?

  • The Synergy system introduces fresh filtered air from outside into the home. At the same time it extracts stale moist air from within the home. Both airflows travel through a heat exchange core where the heat from the extracted air is imparted into the incoming air, pre-warming it before distributing it around the home

What is the difference between Heat Transfer and Heat Recovery?

  • Heat Recovery – is a ventilation system which extracts the warm stale air from your home, passes it through a heat exchanger which recovers up to 90% of the heat and transfers this heat into the filtered incoming air which is distributed throughout your home
  • Heat Transfer – extracts the excess heat from your lounge (excess heat caused by an efficient heating device) and transfers all the heated air to the bedrooms

Why are there two different types of in-line filters?

  • The G3 filters are coarse types to protect the system fans and heat exchanger core.  The F7 filter is designed to further filter the incoming air removing smaller particles such as pollen & dust mites providing clean filtered air to the home environment

What is meant by a balanced system?

  • The inlet air is introduced into the house at the same rate exhaust air is extracted from the house ensuring a continual supply of fresh air and the removal of stale air

Why would I want an in-line duct heater if I am recovering heat anyway?

  • Heat recovery will warm incoming fresh air if this air is cooler than the exhaust.  In some scenarios the inlet air may be so cool that assistance is needed to ventilate at an acceptable temperature.  An optional in-line duct heater will temper the inlet air

What happens to the water which is removed?

  • Most of it will be exhausted directly out of the house in the form of water vapour but in some cases as the exhaust air is cooled to heat the inlet air water may condense on the heat exchanger core which is why it is important to have the drain connected.  Actually this condensation is a good thing as the process releases latent energy as water changes from gas to a liquid state which further heats the inlet air

I still have condensation on my windows, what is wrong with the system?

  • There could be several reasons.  The Fan Speed setting could be too low in which case the stale air is not being removed fast enough.  Try setting the Fan to a higher speed.  If portable LPG or natural gas heaters are used they can emit a lot of location specific moisture.  Make certain this moisture laden air can be easily expelled. Also there might not be enough air coming into the room try opening that vent more

What is meant by stale air?

  • Stale air not only consists of excessive moisture but also includes such things as dust, animal and cooking smells and even the carbon dioxide exhaled by people. These are all unhealthy and affect the overall wellness of the occupants.  Expelling the used stale air and replacing it with fresh air is the best method of ensuring a healthy home environment
What you say

"Its the best thing we have done, should of done it years ago! Thanks GreenSheep.  If we move house we will get you to do the next one."

Brian and Liz Webb, Cambridge

What you say
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