Home Ventilation

Pyers Plumbing And Ventilation LTD is a locally owned business that is dedicated to ensuring that your home is dry and the air you breathe in your home is clean

Why is ventilation important?

Poor ventilation can cause condensation. Quality ventilation is important because it keeps unwanted moisture out of your home.

Condensation can make the air damp. The moisture from the condensation causes a mould that is commonly found on and around windows. Mould is a serious issue and can lead to long term health issues.

In the 2018 census over 2800 people in Nelson said that their home was damp all or a lot of the year. There are three main things that lead to condensation, too much moisture, not enough ventilation and inadequate heating.

Don’t deal with condensation, improve your home with ventilation.

How to know if you have poor ventilation

  • A damp, musty smell

  • Dark or discoloured patches on the wall

  • Lifting wallpaper

  • The appearance of mould on/around windows, on floors or on the ceiling

  • Excessive condensation on the windows

Types of Ventilation

Passive Ventilation

Natural ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems ie: electric fans . It refers to the flow of external air to an indoor space as a result of pressure differences, or wind action .

Wind cowls used in conjunction with fresh air vents can often provide an effective solution.

Balanced Pressure Ventilation

Balanced pressure heat recovery ventilation systems are particularly suitable for modern homes, if they’re already well heated and reasonably airtight.

These systems have two fans -

The supply fan brings fresh outdoor air into the house through ceiling vents.

The exhaust fan extracts an equal volume of air from inside the house and discharges it outside.

In winter, the heat exchanger moves a portion of the heat in the warm exhaust air to the cold supply air, reducing the heat loss associated with ventilation. Summer options avoid the incoming supply air being warmed up by the exhaust air during summer nights.

Positive Pressure Ventilation

Positive pressure/roof cavity ventilation forces filtered air from your roof space into the house through ceiling vents.

This is the most popular type of ventilation in New Zealand homes.

Using attic air may introduce some heat into the house during the day in winter months, but the air quality needs to be looked at, and quality filters used.