Here's the answers to our most frequent ones:

How does ventilation create a healthier home?

Fresh, filtered air is brought in, stale air is removed. The HRV home ventilation system installed in your roof space changes the air in your home to get rid of excess moisture and odour created by cooking, cleaning, breathing, and other things. Incoming air is filtered to help remove dust, pollen and other contaminants, helping to create a more comfortable home.


What’s involved in installing an HRV ventilation system?

Your HRV ventilation system is installed by a local team of friendly, professionally-trained electricians. A new power point is installed to connect it and a certificate of compliance is issued for electrical work. They will find a time that’s convenient with you for installation. Then your installer will also talk you through how to get the perfect home invironment(TM) using your new HRV Next Generation ventilation system or one of our innovative ventilation upgrades.


Does the HRV ventilation system come with a warranty?

At installation, your HRV ventilation system is warranted for 5 years against fault. In normal use the system will require a service every 24-months. A filter change is carried out at the same time. Genuine HRV parts are required as part of the ongoing warranty, and to ensure you continue to get the best performance from your system.


What payment options are available?

We take all the usual payment options – cash, cheque, direct credit or credit card. We also have easy payment options available through Q Card. At times we have special payment option plans available too - take a look


How much does an HRV ventilation system cost?

Each home is different – in size, environment, inhabitants etc. Which is why we come to you to take moisture and temperature readings, which we then use to determine the best solution for your home. Our HRV ventilation specialist will take you through a full presentation of how everything works, provide a price and if you'd like to go ahead, the installation is planned for whenever suits you.


I've just moved into a home with an HRV ventilation system, what do I do?

HRV home ventilation systems are designed to make your invironment more comfortable. Air that sits in your roof space, is filtered and distributed through your home, helping to remove pollen and dust. Our system helps to alleviate hidden damp and condensation. There are only a few times you may need to adjust your HRV ventilation system – it’s a smart, fully automatic system.

Take a look here for a quick overview of how the system works and how to use it to best advantage at your new place. For more in depth advice on changing settings, take a look at the manual, or talk to our Customer Service team if you have any questions – 0800 HRV 123 or online now.


Where can I get more information on my HRV products?

Our Customer Service team are more than happy to help – give them a call on 0800 HRV 123 or talk to them online. Otherwise, take a look around this site to find out more useful information on your HRV product.


I've had my HRV ventilation system for a while – why do I have a black ring around my outlet vent?

In some homes, the air passing out of the outlets across the ceiling will cause a static charge to build up. This can cause a build up of household dust from inside the room attracted by the static charge. Simply wipe away the dust ring with a dry cloth, then turn the diffuser plate of the vent open a little further to help stop this from recurring. If this continues, give us a call on 0800 HRV 123 and we can arrange a visit by one of our Customer Service team.


How do I use Burnt Toast Mode?


My 'Replace Filter' light is flashing – what does this mean?

This light indicates your system requires a service and filter change. It is important that filters are changed with a genuine HRV SETA nano-filter every two years to ensure the performance of your HRV ventilation system isn't reduced, and you continue to get all the benefits your HRV ventilation system provides.

To find out more about the Filter Change and Service click here.


What do the ventilation levels on my control pad mean?

At different times of the year more or less air is needed to clear condensation in your home. Higher levels of condensation mean bringing more cold air into a house. The balance between condensation clearing and reducing the amount of cold air coming in is dependent on each home.

You can adjust it to suit:

  • Spring, Summer and Autumn: Lower ventilation levels (1 - 3)
  • Winter: Higher ventilation levels (3 - 6).

If you have the latest HRV Touch Pad, your system will do this automatically. For more information call our Customer Service team on 0800 HRV 123


My HRV ventilation system is working great, but I still get condensation occasionally on some windows – why is this?

Even though your home is now dry, cold or damp weather conditions may still lead to some misty windows – though certainly far less than without your HRV ventilation system. No system can guarantee zero condensation, but believe us when we say your HRV ventilation system is getting you as close as possible. If you have any questions, please give us a call and we can look at your settings in greater detail. 

What is Energy Saver mode?

Energy Saver turns off Cooling mode in the winter, and turns off Heating mode in the summer.  The system automatically senses the change of seasons.

How does the HRV water filtration system work?

Multi-stage filtration:
1. Multi-stage sediment filter – removes particles larger than 1 micron (very small).
2. KDF filter – removes many heavy metals incl. mercury, lead, aluminium, chromium etc and works with GAC to help with chlorine removal.
3. Granular Activated Carbon filter – removes up to 98% of chlorine and by-products.

I have the HRV water filtration system and my water is murky – what should i do?

If you fill a glass of water to the top and a whitish murkiness disappears over 1 to 2 minutes, the murkiness is caused by fine air bubbles.

If the colour is brown, the sediment filter needs to be replaced. We recommend replacement every 12 months.

My water has a black look to it.

Flush 20 litres of water through the filter to remove any carbon fines. If the problem persists after 20 litres, the carbon filter may have been over pressurised. A new carbon filter will need to be installed.

The water system has a leak.

Call HRV on 0800 HRV 123. HRV will send a technician out to repair the leak. If the system is within warranty, the repair will be carried out at no cost to the customer.

How often do the filters need changing?

Once every 12 months for a standard 3-5 bedroom house. HRV will be in contact to arrange a filter change or you can book a service online and HRV will be in touch.

My water pressure has dropped. What should I do?

The HRV water system filters may be full of sediment, and are hindering the water from passing through. At this time we recommend a filter change.

Can I change the filters myself?

Yes you can. New filters can be purchased online. Filters will be sent out with a simple set of instructions so you can install the filters yourself. If you are unsure on how to change the filters, then HRV are more than happy to change the filters for you.

I use tank water, will the HRV water system work?

Yes, HRV will specify the correct system for your home. Our rural solution will assist with the removal of heavy metals, pesticides, agricultural sprays, fertilisers etc. We can also provide an additional UV lamp to ensure that any bacteria are killed.

My house is huge. Is the HRV water system big enough?

The HRV Water system has been designed for the medium to large New Zealand home. If you have more than 2-3 bathrooms, and/or more than 6-8 people living in your home, HRV may specify a larger HRV water system.

Will the filter system reduce the water pressure?

Not for a start. Depending on how fast the sediment filter blocks up. After a year there may be some loss of water pressure.  Simply call 0800 HRV 123 or book online to organise a water filter change.

When do I need a cover for the water system?

A cover is required if the system is installed outside. This is to protect the system from sunlight and any weather or environmental exposure such as salt or sulphur.


When should I use a heater?

When your room temperature falls below 18 dregrees is recommended.

How much money should I spend on a good electric heater?

Spend as much money on your heater as you can afford. Typically more expensive heaters are better at radiating heat. Convective heat rises quickly to the ceiling and can be lost.

Expect to pay from $700 for a good electric heater (including installation on wall and electrician signature to ensure product safety).

What is a Thermostat?

A thermostat turns an electric heater ON if the room temperature is below the set temperature. A thermostat turns an electric heater OFF if the room temperature is above the set temperature.

What is a Thermostatically controlled heater?

All HRV heaters have a Thermostat. The heater will have a variable thermostat so you can control the set temperature (the max temperature of the room).

Digital display can be easy to use. Set the temperature between 18 and 21, turn the power on, and the heater will work to keep the room at the set temperature.

Manual dials 1 to 5 should be avoided as they can be confusing for people to operate.

Where is the best place to put a heater?

If you put a heater on the opposite side of the room to a window, you can cause a cold draft to scoot along the floor, because cold air drops down from the window, is drawn across the floor by the heater, heats the air, moving it to the ceiling, and back to the window.

The better place to put a heater is under the window.

What are the benefits of using a 7 day timer?

You can easily programme the heater to turn on and off when you are in the home. This will significanly reduce heater power consumption as you are forcing the heater to turn off when you are not there.

How many heaters do I need for an average three bedroom house?

HRV would recommend a 2KW heater for each average sized bedroom. The HRV heaters are 2KW and therefore heat the room quickly. HRV would need to assess the lounge or living areas for heating requirements as this can significantly vary depending on building design.

How much will it cost to install a whole home heating solution for a 3 bedroom Home?

Every home is different to please ask for a free home assessment.

Does a higher KW heater use more electricity?

Yes, but the higher KW heater will heat the room up quicker to the set temperature, then turn off. How well the room is insulated will affect how long the heater is off for. The heater will automaticlly turn back on when the room temperature falls below the thermostat temperature.

A higher KW heater will keep you warm even on the coldest evenings.

Do I need a heater if I already have a heat pump?

A high-wall heat pump is designed to heat the room it is installed in, it's not a whole home heating appliance. If the heat pump is in the living area, heaters are ideal for providing heat in smaller bedrooms.

Should I put a heater in my bathroom?

Yes, as it will help you keep the bathroom drier, especially if in combination with HRV extraction and ventilation.


Why are heat pumps more efficient than traditional heaters?

Heatpumps don't "create" heating, they tranfer heat energy from outside to inside. HRV radiator/heaters will consume 2KW of electricity to create 2KW of heating, when a heatpump may consume 2KW of electricity, and create 6 to 8 KW of heating.

Where is the best place to locate my heat pump?

HRV recommend back-to-back heat pumps where the inside unit is placed on the same wall as the outside unit. These are the most ecomical to purchase. HRV can install a heat pump on internal walls depending on the situation, but there will be a higher cost of installation which can make this impractical. You can choose from both highwall and floor mounted heat pumps depending on what suits you. HRV recommend a free home assessment to specify the correct product and placement for your home.

Where in my home should I put my heat pump?

HRV recommend the lounge and living areas as the primary place for heat pumps. There are also smaller options available for bedroom heating and cooling.

How big do I need my heat pump to be?

HRV supply a range of heat pumps to suit your needs and recommend a free home assessment to specify the best heat pump for you. As a rule of thumb, rooms that are small and well insulated only need a small heat pump and large rooms with lots of windows/external walls will need a larger heat pump.

Can I use my heat pump to cool?

Yes - this is great option for summer.

Will my heat pump help to dry the home?

The air movement and extra heat will help in the drying process. This is dependent on how the customer sets up the heat pump operation. HRV recommend an HRV ventilation system for drying the home and a heat pump for heating and cooling. These 2 products work well together because a drier home is easier and more energy efficient to heat.

Will my heat pump dehumidify (reduce moisture in the air)?

Some heat pumps are sold as good dehumidifiers. The truth is that this is not their primary purpose. The HRV ventilation system combined with HRV extraction, is a far more effective way of drying your whole home.

Are heat pumps noisy?

The internal wall mounted unit has a fan which is designed to minimise noise.

Do heat pumps create drafts?

Drafts are caused by air moving through a break in the building envelope i.e. under a door. A heat pump moves air around the room but this should not be confused with a draft.

Why choose HRV?

HRV provides the correct product specification for your home, installation, and after sales service. HRV provide quality products from trusted heat pump brands.

How do I control my heat pump?

A remote is supplied with the product, along with comprehensive guide on usage. Your friendly HRV installer can show you how to use the heat pump. Call 0800 HRV 123 if you have any questions about how to operate any HRV product.



Book a Service or Filter Replacement

HRV is proud to offer leading-edge technology. To keep your system functioning as efficiently as possible, we recommend regular services, by an HRV technician.

HRV Instruction Manuals & Warranties

Need help operating your HRV products or looking for your warranty? You can find manuals & warranties here.

New to HRV?

With a full range of ventilation, heating, cooling, water filtration and Solar products, we pride ourselves on helping to create healthier home invironment™ by providing Total Home Solutions for Kiwi families.


Quick answers to the most common questions we’re asked can be found here.


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Explore our full range of ventilation systems and bathroom extractor fan systems.

Water Filters

For filtered water from every tap and shower in your home, discover HRV water solutions.


Find a smarter way to heat your home with our Heat Pumps, Heat Transfer & LHZ Tablet heating solutions.


Stay comfortable all year round with our clever combinations of venting and air conditioning solutions.


Join the revolution. Harness the sun’s energy to power your home. Available in Auckland only at present.


Partnering our products can really improve your home, like combining a vent system with a heat pump. This gives you a home that is healthier, more efficient, and easier to heat.