The Maxi series

A Centrally Located Microclimate Generator

The Maxi Series units are fully automatic positive pressure humidity control systems, designed specifically to provide safe and effective conservation-quality humidity control for museum display or storage enclosures. A single unit can provide humidity control for an entire gallery of display cases – all supplied from a remote location. As the ambient temperature in the gallery fluctuates, the Maxi unit will maintain constant relative humidity levels.


The Maxi unit uses a well established, but rather unique method of humidity control, developed for museum conservation applications in the early 1980’s. Many developers have contributed improvements as newer generations have been introduced. The Maxi unit is the most effective and reliable unit now available, offering substantially increased treatment capacity, variable speed blowers, higher fault tolerance, more detailed annunciator functions, improved air and water filtering, and a simplified and extremely reliable control system.

As well, Keepsafe Microclimate System’s installation technology for central units offers far reaching improvements in both maintenance and installation procedures and air distribution system design and installation. ┬áThe lessons learned from years of hands-on installations have been incorporated into these new protocols, with substantial contributions by on site conservation staff and engineers at institutions using central microclimate control.


Use an Maxi Series unit for very large volume display cases, multiple display or storage cases in a single gallery or room, humidity-controlled temporary storage tents, or small archive rooms where:

  • existing air conditioning systems or building envelopes cannot maintain adequate humidity control.
  • extremely accurate humidity control in new or renovated galleries may be expensive or impractical.
  • existing cases with moderate to high leakage rates must be used.
  • energy cost savings of up to 20% must be realized.

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