Package or Split unit Heatpump

[ebasista]

So I have a dillema with what direction to put a heatpump in. I can put a split Heatpump in (condensor outside and air handler in the attic above the garage, or go with a package Heatpump and run ductwork thru the walls.

I have a 650sqft detached garage.

Split Unit Pros:
-only 3 small holes to drill thru wall
-easy to "hide" HVAC ducting/equipment in attic

Cons:
-more expensive typically
-not easilly available used/able to test

Package Unit Pros
-Easy to test used
-Easy installation (see con)
-Cost

Cons:
-Large holes in wall to accommodate ductwork passing thru
-In order to be hidden would have to be mounted 10ft high on outside, otherwise ducts will take away from interior space


Any thoughts/comments on what way to proceed? I like the minisplit idea, however am not to keen on long term reliability/parts availabilty.

 

[Jackfre]

Put in am " mini-split heat pump. Google Fujitsugeneral or mitsubishi. They are the two top brands. Any H/C question should be accompnied by your location. The answer varies dramatically between Bangor, ME or Tuscaloosa, AL. The mini splits are more efficient, easier to install and require no duct work.

 

[napaAl]

You sound pretty educated on the topic. The only think overlooked was efficiency. That would undisputedly be Mini- Split, Split System, package unit , from high to low.

 

[rsa]

Split Unit Pros:
-easy to "hide" HVAC ducting/equipment in attic.

In an unconditioned attic, that's a con.

According to Dave Roberts and Jon Winkler, engineers at the National Renewable Energy Laboratories, ducts in unconditioned attics waste about 20% of the output of a furnace or air conditioner. These researchers report that during peak conditions, the losses are even greater.

Link.

 

[buzz4041]

It seems a mini split would be the way to go. Outside unit and hang inside unit on the wall with only a hole large enough for the lines to come through. You could mount it all up run the lines and power in couple day's max and have an AC guy out to charge and commission it for under a $100 I believe.

 

[ebasista]

I've been avoiding the minisplits simply based to serviceability/availability of parts (and ability to repair yourself).

How has the general reliability of the mini splits been? Are they user serviceable?

How much of an efficiency increase are they (in terms of % lower consumption of power)

 

[buzz4041]

I spend more time overseas than back at home and mini splits are used 90% of the time. They are reliable units. As you can design them to work independent of each other they can be very efficient as you cool or heat only the rooms you want at the desired temperature you want.