DVS Filter Replacement & Service

Our DVS filter replacement is a full service, done for you. We climb into your roof, fit a new filter at the correct grade, clean the fan, check the ducting and every diffuser, and send you a written report with photos. Maintenance only: we never sell or install new systems.

Book Your DVS Filter Replacement
Prefer to talk? Call 021 239 6070
Ceiling-mounted round ventilation diffuser in a room with light grey ceiling and white walls.

Signs it's time for a service

Not sure if your DVS needs a service? These are the things people notice first.

  • The filter is overdue

    It has been more than 12 months since the filter was changed. DVS recommends replacing it every year.

  • The air feels stale

    Your home feels stuffy, or the air doesn't feel as fresh as it used to.

  • Damp windows

    More condensation on your windows than before.

  • A musty smell

    A damp or musty smell coming from the ceiling vents.

  • Weak airflow or dust

    Weak airflow from one or more vents, or more dust settling near them.

  • A louder fan

    The fan is louder than it used to be, often because it's straining to pull air through a clogged filter. It might just need a service, or it might need a repair. We'll tell you which.

If any of these sound like your home, a service is a good place to start.

Notice any of these? See prices and book →

One visit. Filter replaced, roof cavity inspected, fan and ducting checked, diffusers detailed. A written report you can keep.

DVS Filter Replacement & Service Cost in Auckland

Online booking, 24/7

  1. 1Enter your addressWe check you're in our service area.
  2. 2Choose a day and timePick what suits you. Times are usually available within the week.
  3. 3Add your detailsNo account needed.
  4. 4We take care of the restOur technician comes to you, and you get a written report with photos.
Got a question about your system before you book? Call 021 239 6070.

DVS Positive Pressure Ventilation System

Full ServiceAll current DVS positive pressure systems
$249inc GST
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Every service: filter replaced, roof cavity inspected, fan cleaned, ducting checked, diffusers detailed, airflow calibration verified, written condition report.

What we found in a Mount Eden home

This DVS filter had not been changed in two years. The fan had been making a noise because it was straining to pull air through the clogged filter, and one of the ducts had become disconnected from a room.

  • DVS filter from a Mount Eden home, grey with dust after two years

    BeforeThe filter, after two years

  • DVS fan impeller and housing with dirt, mould spots and a rusty rim

    BeforeThe fan, with dirt and mould

  • Clean new white DVS filter fitted in a roof space

    AfterThe new filter, fitted at the same home

We fitted a new filter, cleaned the fan and housing, reconnected the duct, and gave the owner a written report with photos.

Photos shared with the customer's permission.

See prices and book your visit →
Why homeowners choose MiHT

Independent servicing, not a sales visit

We don't install or sell replacement systems, so there's no reason for us to tell you that you need a new unit when a proper service will do. Every visit is carried out by a qualified technician, not someone working toward a sales target.

No sales agendaMaintenance only. We never install or sell replacement systems.
Written report, every visitBefore-and-after photos included, so you know exactly what was done.
Transparent, fixed pricingSee exact pricing upfront, before you book, with no surprises on the day.

Every visit covers more than the filter

FilterReplaced with the correct grade, matched compatible filter, the part most owners think is the whole job.
Fan unitOpened, vacuumed and sanitised. Dust and growth here throws the fan off balance and cuts airflow.
DuctingChecked full-length for disconnections, restrictions and damage.
DiffusersEvery ceiling diffuser cleaned.
Roof cavity intakeChecked for dust, moisture and pest activity where your system draws its air from.
Airflow calibrationVerified and calibrated at every vent once everything's back in place, with results in your report.

We only service ventilation systems, we don't sell or install new units, so there's no upsell agenda. Every visit ends with a written report and before-and-after photos, so you know exactly what was done.

Common questions about DVS filter replacement in Auckland.

What's the difference between a filter replacement and a full DVS System Restore?

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A filter replacement covers the filter itself. A full DVS System Restore also checks the fan housing, the complete duct run, every ceiling diffuser and the roof cavity intake, then confirms airflow with a written report. If we find something that needs hands-on repair, like a disconnected duct or a fan rebalance, we'll quote that separately rather than bundle it into a standard visit.

Will I need to be home during the service?

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Yes. Your ceiling space needs to be accessed for the unit and ducting inspection, and every room needs to be checked for diffuser airflow. Someone needs to be home for the duration of the visit.

How much does DVS filter replacement cost in Auckland?

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A full DVS positive pressure ventilation service is $249 inc GST. That covers more than a filter swap: roof cavity inspection, fan unit clean, full ducting check, diffuser detailing in every room, and an airflow calibration check, with a written report and before-and-after photos.

How often should I replace my DVS filter?

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DVS recommends replacing the filter every 12 months, and that's written into their official documentation across current models. If your roof cavity is unusually dusty, or there's been recent construction nearby, replacing it sooner is worth considering.

DVS system not working right now?

If your DVS system has stopped working, is making noise, or isn't behaving normally, tell us what's going on and we'll get back to you.

Report a Fault