IISY – Healthier buildings. Healthier people.


Healthier buildings.
Healthier people.

Intelligent indoor air as a service


Savings from predictive maintenance compared to delayed repair.


Vähemmän lyhytaikaisia sairauspoissaoloja, kun sisäilma on kunnossa.


Parempi tuotto kiinteistösijoitukselle, kun sisäilma on kunnossa.

Intelligent indoor air quality service.

How can you tell if your building is functioning as planned? Wrong conditions cause serious risks to the property and may expose building users to hazardous indoor air quality. Good indoor air quality helps achieve higher profitability and lower maintenance and operating costs. Furthermore, good indoor air quality creates comfortable, productive and healthy conditions for building users.

Continuous measuring

Wireless sensors constantly measure up to nine quality metrics from indoor conditions.

Smart cloud service

Indoor air information is analyzed for the whole property portfolio, ready to be used any time and from anywhere.


Continuous measuring enables recognition of long-term changes and therefore prevents indoor air quality problems.

Integrated to processes

Interface to building automation and proptech management systems enables saving energy costs and working hours.

Freesi LifeCycle Service

LifeCycle Service produces high quality construction and proptech consultation, which enables indoor air quality development.

Indoor air quality communication

Threshold alarms to stakeholders and communication service to building users creates trust and peace of mind for everyone.

Three choices for one of the best decisions on your career.

Gain peace of mind about indoor air quality and improve communication to building users and stakeholders. Stop putting out fires and move to predictive maintenance with the help of an intelligenct indoor air service. You can choose to integrate the service with property technology and management systems.

Freesi EcoComfort

Easy and economical system for securing comfortable conditions and enabling energy savings.

Freesi PropTech

Professional system that integrates to building automation and property management systems and enables high quality construction and proptech consultation.

Freesi LifeScience

A complete system with advanced features that ensure healthy and productive conditions for building users.

This is what our customers are saying:

"It has been a good start and we are using freesi with peace of mind. We are eagerly looking forward to future devlopment."
- Olli-Pekka Kumpula, city of Ulvila

Rovaseudun Markkinakiinteistöt Oy