[RFI] Window Air Conditioner Advice Wanted

[Grant Saviers]

I agree a split system is the way to go, more $ but a lot more 
efficiency so if it runs a lot the payback is there.  Plus they are 
super quiet inside and out with the compressor outside, which could be a 
cooler/shaded location for efficiency improvements.   My variable speed 
(inside and outside) 27k btu Panasonic makes no RFI. It is cooling only 
but heat/cool reverse cycle is pretty much the usual now.  With 3 air 
handlers, it cools a 4k sq ft shop + shack except on very hot days and 
then a 25k wall unit is fired up as support.  A GE "window" unit with 3 
fixed speeds and no rfi.

Way back I installed a 25k "window" unit up 8' by with a 12' 4x4 I 
braced floor (had a hearth to push against, so no holes in the oak 
flooring) and wall (against a 2x6 lagged across 3 studs), a forged eye 
thru the 4x4 and a good sailboat 4:1 jam blocks rigging.  The hoist 
point is close to the wall so the bending load is small on the 4x4.  
Then the finesse part (besides how to securely sling the unit) is 
sliding into the housing while slacking the line at the same time.  But 
the weight is under control at all times if rigged right.  Some plaster 
touch up and done.  It cooled a peaked roof 24' x 26' kitchen/family 
room split with a 7' high pony wall so it had to be high enough to blow 
over that wall.

Grant KZ1W

On 7/13/2018 21:32 PM, Aaron Kreider wrote:
> Two might be the way to go.  A lot easier to install smaller units if 
> you're doing it yourself.
>
> Or if you are willing to spend a bit extra, you could try a mini 
> split.  You can double the efficiency and it'll be nice and quiet.  
> I'm trying to DYI install one, but I don't recommend that unless you 
> know HVAC.
>
> Aaron
>
> On 7/13/2018 11:21 PM, NA6MB Mike wrote:
>> Rent scissor lift.  Only couple hundred for a weekend and provides a 
>> nice stable platform on which to work.
>>
>> NA6MB
>> Mike
>>
>>
>>
>> Sent from my iPad
>>
>>> On Jul 13, 2018, at 6:17 PM, Steve Kurtzman <stevew7sjk at gmail.com> 
>>> wrote:
>>>
>>> Hi Don,
>>>
>>> OK ya got me there.  Not the kind of shack I was envisioning!
>>>
>>> So basically you want an air conditioner with "mechanical 
>>> controls".  I see
>>> that they are still made, such as by Frigidaire, but only up to 
>>> 12,000 by
>>> them.
>>>
>>> Maybe use two of them at opposite ends of the shack?  More expensive 
>>> but
>>> better air distribution.
>>>
>>>
>>>
>>> Steve
>>> sparkie001 at pobox.com
>>> stevew7sjk at gmail.com
>>> www.facebook.com/imetsteve
>>>
>>>
>>>
>>> On Fri, Jul 13, 2018 at 3:58 PM, Donald Chester <k4kyv at hotmail.com> 
>>> wrote:
>>>
>>>>> Holy Moly!  2 tons of A/C for a shack?  That's enough for a whole 
>>>>> house!
>>>>> Steve
>>>>> sparkie001 at pobox.com
>>>> Shack is 24' X 32' with 12' ceiling (formerly a one-room school 
>>>> house).
>>>> Building is unshaded in direct  sunlight in afternoon. QRO 
>>>> transmitters and
>>>> other station equipment give off considerable heat.
>>>>
>>>> Various on-line calculators recommend between 19k and 30k BTU with
>>>> pertinent data entered. The old a/c is 23k, although at 40 y.o. it 
>>>> probably
>>>> doesn't have that much cooling capacity any more.
>>>>
>>>> Besides RFI considerations, I have to figure out a way to get the 
>>>> old one
>>>> down and the new one up in its place.  Hole in the wall is 8' high 
>>>> off the
>>>> floor.  Most units I have checked take the same size hole and weigh 
>>>> 130-150
>>>> lbs.
>>>>
>>>>
>>>> Don k4kyv
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>