Heat Pump Ventilation | Auckland Heat Pump Installation
Heat Pump Ventilation | Auckland Heat Pump Installation

Heat Pump Ventilation

At Auckland Heat Pump Installation we can install a range of ventilation systems to help your home expel moisture, smoke, cooking or pet odours and indoor pollutants. This could be in the form of a positive pressured ventilation systems or installing extractor fans in your bathroom, laundry or kitchen (Rangehood).

We feel strongly that any money that you invest should be used wisely and appropriately. There’s should always be a cost benefit examination between how much a piece of equipment or system is going to cost you versus the actual benefit when compared so something cheaper. We believe the law of diminishing return applies directly to ventilation as there are many companies that do ventilation and charge their customers a price that far exceeds what the customer will get in return.

The law of diminishing return is a concept where the more you pay for a product the less you get back. An example of this that we relate to our everyday life is the purchase of a new car. Say you buy a brand new Toyota Sedan from a car dealership with all the bells a whistles and it cost you $40,000.00-$60,000.00. In comparison say you buy a new Mercedes C Class Sedan and that cost you $80,000.00-$110,000.00. The Mercedes is double the cost of the Toyota but it doesn’t give you twice the car. You don’t get twice the seats, twice the fuel efficiency and you don’t get twice the air conditioning. This same law of diminishing return applies to ventilation also.

Do ventilated heat transfer/exchange systems really work? Short answer is: YES for ventilation but NO as a reliable and powerful source of heating or cooling. They do utilise some of the heat stored in your roof however we believe the cost of the technology cost outweighs the performance and expectations of some of their customers. Ventilation systems by themselves are not an effective way to heat your home. If you wish to make your home warmer it would be better to invest in insulation and or install an effective heating system.

For someone wanting ventilation and heating we would much rather see our customers investing in a simple positive pressured ventilation system that can be 2 to 3 times cheaper than ventilated heat transfer/exchange system and then installing a dedicated heating or cooling system that will produce the results our customers are after.

We believe a good ventilation system is important for a healthy home. This is just as true for an old house as it is for a newly built house. Newer houses are built much more air tight which make it easier to heat than older houses. This in turn increases the demand for adequate ventilation and makes the topic of ventilation much more common than in the 1990s. Opening a window or sliding door does seem like a great idea but the act of opening windows come with its own set of problems.

  1. Opened windows require the occupants or home owners to stay at home and/or could risk the security of the occupants or possessions
  2. Opening a window does not force air to be pushed in, the air would slowly diffuse inwards and therefore requires the windows to be opened for longer periods of time to replace the moist, stale air.
  3. If a heater, or air conditioning unit is running all the desirable heat or cool air escapes and can lead to a costly electric bill.
  4. Allergens such as pollen and dust can be blown straight through an open window and can become trapped and accumulate in higher concentrations when compared to the outdoors

A good ventilation system tackles all these issues associate with opening a window or sliding door as fresh filtered air is sucked up from outside through vents and pushed inside to dilute and replace all the moisture, smoke, unwanted smells from pets and cooking and other indoor pollutants.


The top 6 Reasons why ventilation is so important

  1. Reduce and remove condensation.

Both new and old homes across New Zealand will have condensation problems. As new homes are built more air tight, moisture in the air is unable to be vented out and accumulate. A heater may help keep the moisture suspended in the air but when the air passes something cold like glass or an insulated wall the relative humidity rises and the water vapour condenses into water.

If the condensation, isn’t removed physically or allowed to dry properly it can cause start off with cosmetic damages such as paint peeling or bubbling or wall paper peeling. When condensation is left to continue it can lead to mould growth where patches of black mould could from and continue to grow. This may be more easily seen where the bed meets the wall or curtains that cover any glass surface. Black mould is a health concern and if you start noticing it growing on your walls or curtains either you need to find a way to keep your windows open during the day or invest in a ventilation system.

If you have wooden window sills and frames, which most New Zealand homes have, you may need to pay close attentions to the lower inner corners as water can accumulate there and rot the wood. If the wood is already rotting someone either a contractor or the home owner will need to scrape out the affected wood, fill with an appropriate compound and repaint.

Condensation is not likely to cause structural damages but extra care should be taken with houses built between the 2000s to 2006 as many houses in New Zealand that were built in that era were built with untreated wood and are more vulnerable to water damage and rot.

Introducing an appropriate ventilation system will definitely help reduce the occurrence of condensation forming and the amount of damage caused by moisture in the air. By pumping in fresh, drier air the water content will be diluted and the fresh air will help you sleep better at night.

  1. Reduce asthma attacks by making your home cleaner and fresher


Damp and mouldy conditions can be serious triggers for asthma suffers and each asthma attack that can be prevented as a serious benefit for asthmatics and the family members who care for them.


Asthma attacks can be triggers by a number of things such as tobacco smoke, dust mites, outdoor air pollution, cockroach allergens, pets, mould and various other things. Replacing the air inside your home with fresh filtered air may not eliminate all asthma attacks but will definitely help. Ventilation forces fresh filtered air into the home and can dilute the concentration of these triggers which may be enough to reduce the frequency of attacks.


Damp homes as especially hard on asthma suffers as dust mites thrive in environments with high humidity. The waste products made by dust mites can become airborne and can cause allergic reactions to the skin, eyes and if inhales can exacerbate asthma symptoms. It has been demonstrated that some asthma sufferers have seen immediate benefits when the right ventilation system has been added to their home.  


  1. Help alleviate symptoms of hayfever


Between spring and summer hayfever suffers often get allergic reactions from the pollen that comes from trees, grass and flowers. Symptoms are the worst in the morning and evenings when the pollen rises and falls. Opening a window in your home does not help with hayfever as the pollen can travel freely inwards from the outside. Instead, an effective ventilation system can filter out the large pollen particles and can help dilute the concentration of pollen trapped inside the house. It won’t completely take away the symptom, as pollen is everywhere, but it can produce some really positive results.


  1. To reduce the effects of Radon gas


Radon gas is a colourless, odourless radioactive gas made from small amounts of uranium and radium found naturally in our soil. There are no recorded radon hot spots in New Zealand where a national 2016 survey said in Auckland there was a median radon concentration of 23 Bq/m3. This concentration level means that the Auckland levels of Radon are low and that even without a ventilation system there is no need to be concerned about your health in relation to radon gas.


In New Zealand, we get half our dose of natural radiation from radon where the rest come from cosmic radiation and other sources found in our soil, building materials and in our bodies. The World Health Organization (WHO) has linked radon exposure to 3% to 14% of all lung cancer cases. The percentage of lung cancer cases in New Zealand that has been linked to radon has not been thoroughly researched. When adequate ventilation is installed it can help reduce the radon gas concentrations as radon gas, like everything else, can accumulate inside the house.


  1. To reduce the impact of Volatile organic compounds


Volatile organic compounds (VOCs) are gases that are release by many indoor sources. Formaldehyde is one of the most common VOCs and is commonly found in building materials like, particle boards that make up flooring, glues, and can be found in fabrics and certain types of foam insulation. Other sources include perfume, hair sprays, cleaning agents, paints, lacquers, varnishes, hobby supplies and printers.


It is no wonder why research done by the Environmental Protection Agency has shown that the air inside your average home could be 70% more polluted than it is outside. Making sure an adequate ventilation system is an easy way to flush and dilute VOC concentration to a more comfortable level. If VOCs are a big concern but a ventilation system is not in the yearly budget then a few changes around the house could make a huge difference

  • Select building products that are labelled low VOC such as with paints and varnishes
  • Do not allow smoking in your home
  • Minimize the use of scented products such as candles, incense and deodorizers
  • When bringing in new furnishings or building materials increase your ventilation or consider storing them for a few weeks to air out before bringing them inside your home.
  • Do not stock pile paints, cleaners, and solvents. If you do have them stored ensure their lids are tightly secured and follow the appropriate storage instructions. If at all possible, store them in a separate room like an outdoor shed or separate car garage.
  • Remove any unnecessary tins or bottles that contains products with VOCs from your home. Ensure you check the label for the proper way to dispose of the contents.
  • Avoid bringing recently dry cleaned clothing into your home. Let them sit at the shop for a while or take them out of the plastic and allow to hang in a well-ventilated area until the chemical smell has cleared.
  • Air out your home by opening doors and windows to replace moist stale air.


  1. Reduces backdraft risk


Backdrafts are caused when an indoor fire such as a fireplace, gas heater or cook top has burned the available oxygen in a room or building causing a negative pressure indoors. When this occurs the outdoor air is pulled in and pollutants are not allowed to escape. This can be especially dangerous when gas by-products like carbon monoxide are pulled back in the house and can become concentrated to dangerous levels.


Ventilations systems force fresh filtered air into the home, neutralises negative pressure and can result in a positive pressured house where moisture, odours, and indoor pollutants are forced outside