Unit1, Building 3, Port link Business Park, Port Road, Letterkenny, Co.Donegal

Passive House

What is Passive House?

There five 5 principles of a Passive House:

Insulation– Increased insulation in foundations, floors, walls and roof. Triple glazed windows are also usually required.


Airtightness – Making a building airtight essentially means eliminating draughts. Ideally, we want to have total control over how much air we’re letting in to the building through designed ventilation systems, rather than cold air entering (and warm air escaping) uncontrolled through unwanted or unseen gaps. The rigorous Passive house standard demands an airtightness of 0.6ACH or less.


Thermal Bridging Minimised – Thermal Bridging is when an external component of the building connects to the inside of the building thus causing a cold bridge. This can be reduced through good design and construction.


Heat Exchange – This is basically your Heat Recovery Ventilation system (HRV), HRV basically reuses the heat generated by the air that is discarded from the wet rooms in order to pre-heat the fresh (ventilation) air coming from outside. This in turn reduces your heating requirement as the cold outdoor air barely needs any heating or in the case of typical Irish winters.


Sun Exposure – Passive houses also make use of the sun by angling houses in a way that gets greater exposure to the sun thus requiring less heating on warmer days. Large windows on the south facing elevations to maximise sun gain while reducing window sizes on the north elevations where direct sunlight is minimal.

Benefits of building a passive house in Ireland:

1: Big Savings on Energy Bills

Passive houses are designed from day one to be energy efficient and they utilise extremely high-quality components that are purpose-built for the same reason. For example, a passive house window can actually reduce heat loss by over 70% when it’s compared to a double-glazed window.

Combining this with the high-quality insulation that is used in the walls means that it only takes a very small amount of heating in the winter or cooling in the summer to maintain comfortable temperatures in your home.

The amazing heat retention capabilities of passive homes are just the start, if you add solar panels to your home then you could be making huge energy savings in your home for many years to come.

2: Good for Your Health

As passive homes are virtually sealed shut, to meet the strict standards, they have advanced ventilation systems installed.

These ventilation systems work 24 hours a day to bring in a supply of fresh air while simultaneously removing pollutants, toxins and odours before they reach unhealthy levels.

The air in your home is fresh all day every day without having to extend any effort on your part. These ventilation systems also filter out pollen from outside which a huge bonus for anyone can be who suffers from hay fever.

3: Peace & Quiet

One of the most underrated benefits of building a passive house is how quiet they are when you are relaxing inside.

The level of insulation is so high that it greatly reduces the noises that come in from outside and make it possible to enjoy peace and quiet in your home. This is especially true when your home is in an urban area or next to a busy road and can greatly increase your enjoyment of your home.

There are so many reasons to build a passive home when building a new home for your family. You make big savings on heating bills; the constant flow of fresh air and filtration of toxins can be good for your health and you can relax peacefully in your home even when you’re living in a busy and noisy area.

More Benefits of having a Passive House:

1. Less sneezing and less cleaning

Since a passive home has a killer ventilation system, it filters out pollen quickly—a major bonus for anyone with allergies. The airtight building also lets far less dust in (and filters out what ends up in the air), meaning less time spent cleaning.

2. A future-proofed home

While no one can predict exactly where residential building codes will go in the next few decades, the trend is clear: The code will require more energy efficiency and better resource management. By building passive now, your home will more than likely still be compliant in 30, or even 50 years.