Blog – Ensy

Blog 2026-09-03

Why demand-controlled ventilation?

A ventilation unit that runs at the same speed around the clock is doing one of two things wrong: either it is moving more air than the building needs and paying for it in electricity and noise, or it is sized too low and never quite catches up when the rooms actually fill. Demand-controlled ventilation removes the choice between the two by…

Filter changes and maintenance

Balanced ventilation is low-maintenance, not no-maintenance. Almost everything an owner needs to do in a year comes down to filters — a job that takes fifteen…

Heat recovery in a Nordic winter: what 86% means

Efficiency figures on a data sheet are easy to quote and easy to misread. "86% heat recovery" is not a promise of an 86% smaller heating…