Greetings everyone!

    I have a technical questions I hope I could get some feedback! I understood that air source heat pumps are very efficient because of their ductless configuration. I have been told by a very smart person that adding a duct to a airsource heat pump (Daikin has now a unit that comes with duct) does not diminish with any great significance the efficiency of the unit.  

   I of course have my reasons to believe that using ducts is increasing the liability to the system, but I like to refrain my reasons so I do not "influence" your thoughts...   

   Your thoughts?, which systems would you prefer? There are two working situations for this conversation, one is a 60 x 40 open floor, one room building (no kitchen, and no bathroom -just a working space); the other one is a 3 bedroom system home about 2500sq (both units are going to be air sealed and properly insulated. 

   Thank you everyone! 

Luis

Tags: air, duct, ductless, efficiency, heat, minisplits, pump, source

Views: 265

Reply to This

Replies to This Discussion

Equipment is rated for it's configuration (ducted or ductless). So you can compare equipment efficiencies directly. However, a ductless system has no distribution losses. A ducted system would have losses if the ducts are in unconditioned space. A ducted system will also have higher fan energy.

Now does a ducted minisplit has the same efficiency as a ductless? Yes & No. If it's a single indoor head & single outdoor condenser, Yes. But if it's a multi indoor head set up with 1 outdoor unit, there is usually an efficiency drop (rated).

RSS

Forum Discussions

Solar panel leasing

Started by Luis Hernandez in General Forum. Last reply by Jan Green 3 hours ago. 14 Replies

What causes a temperature plane in a home

Started by Energy Wise Solutions in HVAC. Last reply by Bryan Gabriel 5 hours ago. 8 Replies

Factory built Net Zero

Started by Steven Lefler in General Forum. Last reply by Steven Lefler May 18. 3 Replies

Latest Activity

Richard Drohan liked Brian Sipp's discussion Minneapolis Duct Blaster System with DG-700 For Sale
1 minute ago
Richard Drohan liked John Wagner's discussion Barely Used Energy Equipment for Sale
2 minutes ago
Jan Green replied to Luis Hernandez's discussion Solar panel leasing
"Thanks Brad.  Solar panels are exciting to most homeowners but they clearly don't…"
3 hours ago
Jan Green replied to Luis Hernandez's discussion Solar panel leasing
"Same issue applies in Arizona.  95% of residential solar is leased so we are running into this…"
3 hours ago

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service