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Saving on your home a/c? #4478959
08/04/17 11:31 AM
08/04/17 11:31 AM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
S California
Anyone doing something like this?


Re: Saving on your home a/c? [Re: OneEyeJack] #4478968
08/04/17 11:38 AM
08/04/17 11:38 AM
Joined: Feb 2009
Posts: 8,775
Texas
440Magnum Offline
440Magnum  Offline
Joined: Feb 2009
Posts: 8,775
Texas
This idea pops up like clockwork every so often. Back in the 70s, Rheem had a residential AC model with water spray built in from the factory.

Problem is that in so many areas of the country, if you do this your condensing coil will wind up being a solid block of lime scale within a few weeks and efficiency will go DOWN. Also... water bills aren't trivial.


'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 XJ 4x4 4.0/AX15, '14 WK2 4x4 3.6/8HP
Re: Saving on your home a/c? [Re: 440Magnum] #4478970
08/04/17 11:44 AM
08/04/17 11:44 AM
Joined: Jul 2015
Posts: 3,772
MD
AirgunSavant Offline
AirgunSavant  Offline
Joined: Jul 2015
Posts: 3,772
MD
Originally Posted By: 440Magnum
This idea pops up like clockwork every so often. Back in the 70s, Rheem had a residential AC model with water spray built in from the factory.

Problem is that in so many areas of the country, if you do this your condensing coil will wind up being a solid block of lime scale within a few weeks and efficiency will go DOWN. Also... water bills aren't trivial.

I guess with a well it ain't no big deal.

Re: Saving on your home a/c? [Re: OneEyeJack] #4478971
08/04/17 11:47 AM
08/04/17 11:47 AM
Joined: Jun 2002
Posts: 12,515
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,515
The Motor City
8.5 minutes just to tell us to spray water on the outside of the condenser?

I've done something like that on super hot days. It also helps to keep the head pressures down in the a/c unit. When watering plants on hot days, I'll sometimes spray water on the sunny side of the house.

I've also read articles where they are thinking of using water to cool roofs in Arizona, even though water the area is scarce.

Re: Saving on your home a/c? [Re: OneEyeJack] #4478972
08/04/17 11:50 AM
08/04/17 11:50 AM
Joined: Feb 2013
Posts: 10,678
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,678
Phoenix, AZ
An evaporative air conditioner. Interesting.


2015 Hyundai Sonata 2.4L 84k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Saving on your home a/c? [Re: OneEyeJack] #4478982
08/04/17 12:05 PM
08/04/17 12:05 PM
Joined: May 2007
Posts: 7,507
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,507
Indianapolis, IN
Yes -
I let it happen every time it rains.


Seriously, how much does one spend in water to save on electricity?


Some folks just have to re-invent the wheel with something octagonal ... Just cuz ....


The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: Saving on your home a/c? [Re: dnewton3] #4478994
08/04/17 12:22 PM
08/04/17 12:22 PM
Joined: Apr 2012
Posts: 5,134
MA
Wolf359 Offline
Wolf359  Offline
Joined: Apr 2012
Posts: 5,134
MA
Originally Posted By: dnewton3
Yes -
I let it happen every time it rains.


Seriously, how much does one spend in water to save on electricity?


Some folks just have to re-invent the wheel with something octagonal ... Just cuz ....



Guy claims a gallon a day which isn't much. Around here, 1000 gallons is $12 in water and sewer charges. So about $4 in water if you run it year round, but it's only hot around here for about 3-4 months so more like under $1 a year.

Re: Saving on your home a/c? [Re: OneEyeJack] #4478997
08/04/17 12:33 PM
08/04/17 12:33 PM
Joined: Aug 2004
Posts: 3,297
Raleigh ,NC CSA
rshaw125 Offline
rshaw125  Offline
Joined: Aug 2004
Posts: 3,297
Raleigh ,NC CSA
This comes with a water filter, right?


2012 Porsche Carrera S
2016 Ford Edge 2.0
2002 Taurus Vulcan SOLD
2006 Explorer SOLD
Re: Saving on your home a/c? [Re: Wolf359] #4479003
08/04/17 12:38 PM
08/04/17 12:38 PM
Joined: Feb 2008
Posts: 1,102
PA
umungus1122 Offline
umungus1122  Offline
Joined: Feb 2008
Posts: 1,102
PA
Originally Posted By: Wolf359
Originally Posted By: dnewton3
Yes -
I let it happen every time it rains.


Seriously, how much does one spend in water to save on electricity?


Some folks just have to re-invent the wheel with something octagonal ... Just cuz ....



Guy claims a gallon a day which isn't much. Around here, 1000 gallons is $12 in water and sewer charges. So about $4 in water if you run it year round, but it's only hot around here for about 3-4 months so more like under $1 a year.
+1

Last edited by umungus1122; 08/04/17 12:38 PM.

'95 Chevy 1/2t 305 205k -NexGen Maxlife 5w-30, Wix filter
'89 Jeep Comanche 4.0 278k - GC 0w-30, Bosch LongLife filter
Re: Saving on your home a/c? [Re: OneEyeJack] #4479004
08/04/17 12:41 PM
08/04/17 12:41 PM
Joined: Feb 2003
Posts: 7,415
Jupiter, Florida
Cujet Offline
Cujet  Offline
Joined: Feb 2003
Posts: 7,415
Jupiter, Florida
I have a single, 5 ton, dual compressor, American Standard high efficiency unit.

If I spray water on the condenser, such as when I'm cleaning it, the house gets cold very rapidly. Also if it's raining out, it cools the house much more quickly.

Even so, my electric bills are very reasonable in mid summer. The high efficiency AC unit, coupled with an efficient house setup has paid for itself over the years. And the dual compressor unit does reduce the time each one runs. So the system lifespan is quite good. I don't track how long each compressor runs, but it seems about 50-50. With the 5 ton comp running more in the summer and the 2.5 ton running more off season.


People who count on their fingers should maintain a discreet silence.
Re: Saving on your home a/c? [Re: OneEyeJack] #4479029
08/04/17 01:31 PM
08/04/17 01:31 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
S California
The system in the video comes with a filter.

Re: Saving on your home a/c? [Re: OneEyeJack] #4479066
08/04/17 02:42 PM
08/04/17 02:42 PM
Joined: Aug 2004
Posts: 3,297
Raleigh ,NC CSA
rshaw125 Offline
rshaw125  Offline
Joined: Aug 2004
Posts: 3,297
Raleigh ,NC CSA
It would be very informative if they could show actual electric consumption declining as the water is turned on. Some sort of meter attachment?
Also if they could show how a 12 seer unit becomes a 13 seer unit? As an example.


2012 Porsche Carrera S
2016 Ford Edge 2.0
2002 Taurus Vulcan SOLD
2006 Explorer SOLD
Re: Saving on your home a/c? [Re: rshaw125] #4479071
08/04/17 02:45 PM
08/04/17 02:45 PM
Joined: Feb 2009
Posts: 8,775
Texas
440Magnum Offline
440Magnum  Offline
Joined: Feb 2009
Posts: 8,775
Texas
Originally Posted By: rshaw125
It would be very informative if they could show actual electric consumption declining as the water is turned on. Some sort of meter attachment?
Also if they could show how a 12 seer unit becomes a 13 seer unit? As an example.


You can watch it happen with a clamp-on inductive ammeter. The compressor current drops pretty much as soon as you hit the coils with a spray of water. The effect is real... what I believe makes it a non-starter is the rapid accumulation of hard water scale, corrosion of the condensor coil, and the cost of feeding it water. So you spend a little less on electricity and wind up replacing your condensing unit 3x as often. Not a win.

Plus there's NO WAY that system only uses "about a gallon a day." Look at the water flow rate from just ONE of the 4 misters, its closer to a gallon an hour per mister. So I'm thinking more like 40-50 gallons per day or even more. And that tiny little filter is going to soften that much water to prevent scale? No way.


'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 XJ 4x4 4.0/AX15, '14 WK2 4x4 3.6/8HP
Re: Saving on your home a/c? [Re: OneEyeJack] #4479123
08/04/17 04:05 PM
08/04/17 04:05 PM
Joined: Sep 2012
Posts: 5,378
DFW
DBMaster Offline
DBMaster  Offline
Joined: Sep 2012
Posts: 5,378
DFW
Originally Posted By: OneEyeJack
The system in the video comes with a filter.


I got curious and checked the web site. On the site it says the filter is good for three months.

Re: Saving on your home a/c? [Re: OneEyeJack] #4479139
08/04/17 04:28 PM
08/04/17 04:28 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
S California
Would a sun shade of some kind over the unit help at all?

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