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Old 04-22-2014, 07:51 PM  
GabeT
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Default convert evaporative cooler to refrigerated air

I live in New Mexico where the majority of homes use "Swamp Coolers" to keep their homes cool during the summer.

I've been thinking about converting my existing system to refrigerated air using the same duct work if possible. Has anyone had any experience doing this? I have a 2000sq ft home with furnace that shares the same duct work with the swamp cooler.

What components do I need to purchase/have installed to make this happen?

I want to do some of this work my self, but understand I need to call a pro to do some of the work, soldering etc. Any help would be great, the old swamp cooler just isn't cutting it anymore.



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Old 04-23-2014, 09:18 AM  
Wuzzat?
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We had these things in San Antonio. The fan had to be very strong to push the air through the mesh.

Anyway,
"However, unlike air conditioners which rely on BTUs as a means of measuring cooling efficiency, the output of evaporative coolers is rated by CFMs. This measurement essentially describes the cubic feet per minute of air that the swamp cooler can blow into your home, and whether you're cooling a single room or entire home, a basic formula exists for determining the proper size swamp cooler you need."
from
http://www.air-n-water.com/evaporative-cooler-size.htm

In principle you can use the psychrometric chart to convert to BTU/hr of cooling to CFM of moist air but that's beyond my pay grade.
I guess companies that are in zone B & C on the map in the link know best how to do this since they probably sell both types.

ASHRAE knows this but they're very jealous about lending their costly books to libraries.



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Old 04-23-2014, 10:07 AM  
nealtw
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This like what we see up here in many houses.
air+conditioner.jpg  
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Old 04-23-2014, 12:57 PM  
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You might be able to add an HVAC unit upstream of the cooler to help it out but balancing the CFM needed by the HVAC with the cooler may be tricky or impossible.

Have you found a troubleshooting chart for evap. cooler troubles? Maybe the pad is at the end of it's life.
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Old 04-24-2014, 02:41 PM  
GabeT
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I want to completely get rid of my swamp cooler and retro fit in HVAC into my existing furnace/duct work.
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Old 04-24-2014, 07:16 PM  
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An HVAC dries the air and since your air is already dry you may need some type of humidifier that runs when the AC runs. Very dry air gives some people nosebleeds.
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Old 04-24-2014, 08:01 PM  
nealtw
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When it drys the air the water has to be dealt with at the furance, floor drain or??
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Old 04-25-2014, 07:37 AM  
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Yeah, the condensate.
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Old 04-25-2014, 12:27 PM  
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Quote:
Originally Posted by nealtw View Post
When it drys the air the water has to be dealt with at the furance, floor drain or??
I believe there is a drip line on the furnace to handle that.

I'll update this thread with more detailed info & pics when I get a chance.
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Old 04-25-2014, 12:42 PM  
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You will find this interesting and according to the last post there, adding this to an old furnace may be against code.
https://ca.answers.yahoo.com/questio...1092630AAvXzWE


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