13 votes
Accepted

Why can't a swamp cooler and a furnace be active at the same time?

As long as the heat is turned off the air handler fan can be run while the swamp cooler is running. Swamp coolers work on evaporation the water flowing over the plates causes the cooler and more humid ...
Ed Beal's user avatar
  • 103k
6 votes
Accepted

Why don't swamp coolers push air instead of pulling air?

The main reason swamp coolers are typically arranged that way is to minimize their footprint. That arrangement allows the motor to be inside the air-handler box, instead of poking out the end. ...
mHurley's user avatar
  • 508
6 votes

Are air coolers as effective as air conditioners?

Those air coolers or swamp coolers as they are sometimes called, will only work in an area with very low humidity. They use what is called "evaporative cooling" to achieve a lower air ...
d.george's user avatar
  • 12.4k
4 votes
Accepted

Are air coolers as effective as air conditioners?

Depending on your environment an air cooler may or may not be effective. Here's a chart to help you determine if your situation would be a good fit. Air temperature is in degrees Fahrenheit The ...
David D's user avatar
  • 606
4 votes

Controlling 110v swamp cooler using Nest thermostat

This is how I ended up connecting the Nest thermostat. I did not connect the C terminal to the transformer since the Nest gives me an error "No power to Rc wire detected" if I do that. So far I haven'...
Javier Galindo's user avatar
4 votes
Accepted

Controlling 110v swamp cooler using Nest thermostat

Yes, it is easy to control a swamp cooler with any thermostat. The problem is that in order to use a swamp cooler effectively, you need strategic openings (typically open windows) to let the air out. ...
Maxfield Solar's user avatar
4 votes

Can I cool my south facing wall by spraying it with water?

Evaporative cooling is less effective in places with high humidity. There are mathematic formulas for how much water will be needed to cool a specified surface area by some number of degrees and they ...
David D's user avatar
  • 606
4 votes

How to prevent mosquitoes from breeding in my swamp cooler?

Without knowing exactly what the swamp cooler looks like, my first thought is I would take the preventative approach of screening off the areas mosquitos might use to access the water. Assuming you ...
Cameron Roberts's user avatar
3 votes

How to prevent mosquitoes from breeding in my swamp cooler?

BT ( bacillus thurngensis ) will kill insects . It is not a biocide so will not affect animals.It kills anything with an alkaline stomach and has no affect on anything with an acid stomach like an ...
blacksmith37's user avatar
  • 8,291
3 votes

How to prevent mosquitoes from breeding in my swamp cooler?

There are biocide tablets for this specific use, large commercial ac systems use this as mandated by law in most areas. I would rather be protected from legionaries and mosquitoes and bad smells. ...
Ed Beal's user avatar
  • 103k
3 votes

How can I keep a hanging cloth hydrated?

Place the bottom of the fabric in a shallow pan of water. It'll wick moisture continuously until the pan is empty. It should last a day at least, though. You could even suspend a wallpaper tray from ...
isherwood's user avatar
  • 135k
3 votes

Can a portable swamp cooler be hooked into a central air duct and recirculate?

Where they work, swamp coolers work because evaporating water cools the air being pulled in (via latent heat of vaporization - go visit a chemistry site if that's a concept you haven't gotten in your ...
Ecnerwal's user avatar
  • 210k
3 votes
Accepted

Is it OK to use an oversized swamp/evaporative cooler?

I personally think that it's best to buy a cooler that's a little above the rated CFM you actually need -- this will help ensure it actually cools your house to a comfortable level. Where I live in ...
Aaron Wallentine's user avatar
2 votes

Controlling 110v swamp cooler using Nest thermostat

I wouldn't follow that recommendation by Mr. Solar due to safety and it's overkill. You don't want the potential to power both High and Low speeds at the same time plus the 3PDT relay is not required ...
Dale Coffing's user avatar
2 votes
Accepted

swamp cooler high fan is same speed as low

Turns out it was a loose belt. Once I tightened the belt between motor and pulley (by loosening the motor, pushing it, tightening it up again) then it worked fine. Even the "low" speed was ...
rogerdpack's user avatar
2 votes

Why don't swamp coolers push air instead of pulling air?

I believe the main reason is actually because pulling results in more uniform airflow though the cooling medium (because it creates suction on the whole pad vs just the parts that would be in front of ...
Synexis's user avatar
  • 121
2 votes
Accepted

Can I pull a common wire off an evaporative cooler transformer relay?

I'm concerned about @ThreePhaseEel's comment on how the Nest will respond to the switching 24VDC that the diode bridge will provide. Although I'm confident that would be an appropriate location to ...
Matt's user avatar
  • 183
2 votes

how do you remove a swamp cooler pillow block bearing that's stuck/seized/rusted on?

Oof, what a pain, I had a Champion swamp cooler with the same issue, except the collar was also rusted on. There's absolutely no way of getting leverage outside of possibly removing the entire ...
Luke's user avatar
  • 21
2 votes

What causes a black line around the belt in my swamp cooler? Black line on pad

The black spread everywhere very much looks to me like the belt itself is disintegrating due to age and wear. Additionally, the edge of the belt itself is turning white, indicating that the cords that ...
FreeMan's user avatar
  • 46.7k
2 votes
Accepted

Evap coil port position does not match cover knockouts

The position of the connections is not very important. Covers are just sheet metal; we have tools for making new holes and closing old holes! It isn't even required to use the OEM cover; a substitute ...
Greg Hill's user avatar
  • 30.3k
1 vote

Swamp Cooler AND Humidifier in One System

It's true that a swamp cooler and a humidifier (together with its associated furnace/air handler) both have "blow air around" and "make the air wet" on their lists of features. But ...
Greg Hill's user avatar
  • 30.3k
1 vote
Accepted

Can I use a .006" (.15mm) orifice mist nozzle on a mid-pressure patio misting system?

To answer your original question, I would guess that a .006 would not work with a mid-level pressure system. It appears that the smallest size would be .012" for the mid-level pressure system. ...
Programmer66's user avatar
  • 2,744
1 vote

How can I tell hot from neutral on the power cord of an evaporative cooler?

If you don’t have a meter trace the wires back at the fan if they do not connect to the case it won’t matter many (most) motors the wiring goes directly to the windings and only the case is grounded ...
Ed Beal's user avatar
  • 103k
1 vote

Replacing swamp cooler pads

The pads are not a big deal you want ones that fit and are rated for the filled weight (filled weight of the revisor or tank) . If the pads are not heavy enough they will not support the unit and may ...
Ed Beal's user avatar
  • 103k
1 vote

Can I cool my south facing wall by spraying it with water?

This is not a well-known practice around here, so there's not going to be a lot of battle-test advice to be given. Therefore, you should figure it out yourself. Here's a possible way to do that. Get ...
dandavis's user avatar
  • 2,232
1 vote

Do these swamp cooler pads need replacement or cleaned?

You want to clean them with a non acid cleaner. I use a product called Nu-Brite, I use it for hvac coils and have also used it for these filters , these are really dirty they should be cleaned ...
Ed Beal's user avatar
  • 103k
1 vote

Do these swamp cooler pads need replacement or cleaned?

From the looks of those wet water filter pads I do not think I would want air sucked through them to be circulated around my house. Get some clean new ones. They are not really that expensive.
Michael Karas's user avatar
  • 64.3k
1 vote
Accepted

What is the cause for new swamp cooler's fan stopping after 15 seconds

The installer came back and it turned out there wasn't a great deal of leeway on the electrical connection and it was not hooked up quite right. After reconnecting, it's worked since! I'm afraid I ...
John Spiegel's user avatar
1 vote

What prevents cold air from coming in through evaporative cooler

As it seems evident that you did not cover the cooler in the winter as described by Michael and Jim, I would venture to guess that warm air you heated going up the vent prevented any noticeable cold ...
Ecnerwal's user avatar
  • 210k
1 vote

What prevents cold air from coming in through evaporative cooler

The evaporative coolers that sit on roof are normally serviced in the fall at the end of the usage season. Typical service includes shutting off the water supply to the cooler, draining the water sump ...
Michael Karas's user avatar
  • 64.3k

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