Why do I need a rangehood?

Without a rangehood moisture, smoke and odours from your cooking can build up in your kitchen and home. In newer homes building materials and construction methods are very effective at keeping moisture out, but they’re also very good at trapping it inside. Opening windows is somewhat effective but it isn’t always an option – such as in winter or when security is an issue.

What can happen if my home isn’t properly ventilated?

Stale, moist air can create a damp home which can be unpleasant, not to mention unhealthy. Even when you can’t see the moisture, it can still be embedded in fabrics, bedding and wall linings. Over time wallpaper can peel and mould can grow, this can affect your health and cause structural damage to your house.

What is the law around extraction fans?

NZ building code G4 stipulate that “buildings shall have a means of collecting or otherwise removing: cooking fumes and odors…” when natural ventilation (an open window) isn’t available an extraction fan must be installed, either with a recirculating system or with ducting to the outside (not into a wall cavity). There are also new rules in the building code that require fire protection in ducting.

We’re fully up to date on all regulations surrounding rangehoods and ducting and will make absolutely sure that all installations comply with the building code.

How do I know what size/level of power I need?

The size and power of rangehood you should get depends on the size of your kitchen and how much/what kind of cooking you do. It is recommended that kitchens have an ‘air change per hour’ (ACH) rate of 15-20, which means that if the fan were running for an hour, the air would be completely replaced 15-20 times. To work this out you can calculate the room volume in metres, L x W x H. Multiply the room volume by the recommend ACH (15 if you have an electric cook top, 20 if you cook with gas), the result is the total performance required in cubic metres per hour.

Can you install ducting as well?

Yes! There are many options for ducting from your rangehood, our team can help figure out the best option for your house and install it in compliance with the building code.