Your sites are going passive. Is your team?
Passivhaus is the programme now, from single houses to whole towns. This course gives the people who build them the same understanding as the people who designed them, so the tested building matches the certificate.
Four ways to take it.
FormatsIn person
Classroom and hands-on sessions with practical airtightness and detailing exercises. Cohorts run in Ireland and the UK.
Ask for the next datesLive online
The same curriculum delivered over live sessions, for teams spread across sites or offices. Same exam, same qualification.
Ask for the next datesTailored to your firm
We bring the course to your office or site, shaped around your construction details and your programme. Group rates, flexible scheduling, and the option to combine Designer training for office staff with Tradesperson training for site staff.
Talk to us about team trainingOn demand
A self-paced version is in production. Leave your email and you will be the first to know when it opens, with the launch price.
Done. You will hear from us at launch.
Why execution is half the standard.
Why it mattersA Passivhaus design can meet the PHPP targets in full and still fail on site. The airtightness layer punctured during a second-fix trade, insulation bridged at a structural junction, a window installed without a continuous seal: each is invisible to the design model and visible to the occupant as a draughty room, a condensation stain, or a heating bill that does not match the certificate.
The performance gap between design intent and occupied reality is, in large part, a construction-quality problem. This course closes it by giving site professionals the understanding and the practical skills to execute Passivhaus details correctly the first time.
The training is led by Tomás O'Leary and the Mosart team: the people who write the details, supervise the airtightness tests, and keep measuring the buildings after handover. It is grounded in what actually goes wrong on site, and what actually fixes it.
Certification requires a blower-door result of 0.6 air changes per hour at 50 pascals. That is achievable only when every trade knows where the airtight layer runs and why it cannot be broken. No remedial tape fixes a penetration made after the membrane went in.
Enquiry-based: it depends on cohort size, location and whether you want in-house delivery. Tell us about your team and we will come back with a format and a fixed price within one working day.
What the course covers.
Curriculum, eight modulesWhere the standard comes from, the five criteria, and why performance on site decides whether a building hits its targets.
Installing insulation so it actually performs: continuity, fit, and the hidden heat losses that never show up until the bills do.
Where the airtight layer runs, how to keep it whole through every trade, and the vapour control that prevents moisture damage.
Reading a junction detail, spotting the bridges a drawing hides, and the site habits that prevent condensation and long-term defects.
Installation methods that protect thermal performance, airtightness and comfort. The most expensive components deserve the most care.
How MVHR works, and how correct ducting, sealing and commissioning protect indoor air quality and the certified result.
Low-energy heating and hot water strategies that fit the Passivhaus balance instead of fighting it.
Preparation for the PHI Certified Passivhaus Tradesperson exam, and what the credential means on a tender.
Tell us who needs training.
One person or a whole site team, scheduled cohort or in-house. We reply within one working day with dates, format and a fixed price.
- Group rates for site teams
- In-house delivery at your office or site
- Combined Designer + Tradesperson programmes
- Taught by practising Passivhaus certifiers
Common questions.
FAQWho is the Certified Passivhaus Tradesperson course for?
Builders, carpenters, bricklayers, plasterers, plumbers, electricians and MVHR installers who work on Passivhaus or low-energy sites. It is also taken by site managers, foremen and clerks of works who have to enforce the quality. If your job is to build the building rather than model it, this is the qualification.
What is the difference between the Tradesperson and Designer courses?
The Certified Passivhaus Designer course is for the people who design and model the building: architects, engineers, energy assessors. The Tradesperson course covers the same physics from the site side: where the airtightness layer runs, how to keep insulation continuous, how to install windows and MVHR so the tested result matches the design. Many firms put office staff through Designer and site staff through Tradesperson.
Can you train our whole site team?
Yes, and this is how most contractors now take the course. We deliver in-house cohorts at your office or on site, in person or online, shaped around your own construction details and programme. Group rates apply. Tell us roughly how many people and what you are building and we will come back with a format and a price within one working day.
When is the on-demand version available?
The self-paced on-demand version is in production now. Leave your email below and we will tell you the moment it opens, with the launch price. If your team cannot wait, the live online cohort covers the same curriculum.
Is the course accredited?
Yes. The qualification is issued by the Passive House Institute (PHI) in Darmstadt and recognised internationally; in Ireland and the UK it is increasingly asked for by main contractors and housing bodies on Passivhaus schemes. Mosart courses carry RIAI CPD recognition.
Why does on-site execution matter so much for Passivhaus?
A design can meet every PHPP target and still fail the blower-door test. The airtightness layer punctured by a second-fix trade, insulation bridged at a junction, a window installed without a continuous seal: each is invisible in the model and visible to the occupant. Certification requires 0.6 air changes per hour at 50 pascals, measured on site, and that number is set by the people holding the tape and the tools.
Make the site as good as the model.
Enquire about Tradesperson training for yourself or your team, or look at the Designer course for the office side of the same standard.