GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Mini-split heating efficiency – Floor/ceiling mounted vs concealed duct

ErikOlson | Posted in Mechanicals on

Comparing efficiencies between floor mounted and concealed duct mini splits.  Using 9k btu H2i Mitsubishi units for an apples-apples comparison.

MZ-KJ09NA (Floor mounted)
SEER: 28.2
HSPF: 13.0
 
SE-KD09NAH (Concealed duct)
SEER: 17.3
HSPF: 9.8

Plugging the numbers into a BEopt sim shows a 28% increase in energy usage yearly for the concealed duct version.

* Is the difference from the outdoor unit (M series vs S series)?
* Will the difference in spec and simulation translate into a real-life difference in energy use?

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Replies

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |