The short answer: we estimate for a typical three bedroom home, you can expect a DVS system to cost between $4,500 to $5,000 - including GST and installation.
Like most of the big ventilation brands in NZ, DVS doesn't put a price on its website. To find out what you'll end up paying, you have to book an in-home assessment and get a sales person out to your house. That makes it hard to budget or shop around - so we've pieced together what we're seeing people expected to pay, as of August 2026.
What that price covers
The $4,500-$5,000 stated above is for DVS's standard positive pressure system - it draws air from your roof space, filters it, and pushes it into your home through ceiling vents to reduce condensation and moisture. Once you start adding extras like heat transfer, a fancier control panel, etc. - the price goes up from there.
Where these numbers come from
We want to be upfront about how we know this. DVS doesn't publish a price list, so these figures come from two places: quotes our customers have shared with us and prices other people have posted publicly online.
So this range is an honest estimate, not an official one! What you get quoted will depend on your house, your region, and how the sales visit goes on the day. If your quote comes in above or below this range, it doesn't necessarily mean anything's wrong - it's just how flexible this kind of pricing tends to be.
What affects the price
A few things push the number up or down:
- House size. More bedrooms means more outlets and more ducting, which adds to material and install costs both.
- Add-ons. Heat transfer kits, summer kits, and upgraded controllers all sit on top of the base system price.
- Access. A tight roof cavity or an awkward layout makes for a longer, harder install.
- The sales visit itself. With no published price, there's often more room to move on the day - especially if you don't sign then and there.
Why isn't the price on the website?
This is just our take, but we think keeping prices off the website and relying on in-home consultations is a sales tactic. When a price only gets revealed once someone's sitting in your lounge, it's easier to tailor to what you'll pay - and harder for you to compare beforehand. It's common across the industry, and it's a big reason ventilation systems have a reputation for costing more than people expect.
None of that means DVS is a bad product. Positive-pressure ventilation does work, and DVS have been putting systems into New Zealand homes for a long time.
How to make sure you're getting a fair deal
- Get more than one quote. There's a handful of ventilation companies operating in NZ, all doing roughly the same job.
- Don't sign on the day. A price that's only good "today" is a pressure tactic, not a genuine deal. Wait a few days and the price often comes down, or extras get thrown in.
- Ask about the ongoing costs. Filters and servicing aren't free forever - factor them into what the system actually costs over time.
Our disclosure
Full transparency: we're Better Vent, and we sell a competing positive-pressure ventilation system - so keep that in mind while reading this. For a typical three-bedroom home, we charge $2,600 including GST and installation, and that's the price for everyone, published right there on our website. Keeping an eye on what the other guys charge is part of how we stay competitive, and it's why we're happy to put our own number out there.
Prices in this article are estimates based on customer-shared quotes and publicly available information as at August 2026, and are not official DVS pricing. DVS is a trademark of its owner; Better Vent is not affiliated with DVS.