Jump to content

? About evaporative cooling


  • Please log in to reply
19 replies to this topic

#1 bluecupcakes

Posted 07 January 2013 - 10:31 PM

For those of you that have evaporative cooling, approximately what temp does your house sit at when it's around 38 degrees outside with low humidity?  Also does it leak a lot of water onto the roof (like a constant stream)?
I just think ours is not working effectively but trying to see what's normal before I go and complain to the real estate.  Thanks in advance for any replies original.gif

#2 Expelliarmus

Posted 07 January 2013 - 10:36 PM

Ours has a constant stream onto the roof - they are supposed to.

They also begin to lose effectiveness about 38-40 degrees. I don't have a thermometer but today was 40 degrees here and I had the fan on high and it felt like it was still about 30 degrees inside. It was pleasant enough but no great shakes.

Don't get me wrong, so much better than without it, but at 38 you will notice it start to be ineffective - the lower the humidity the longer it'll last.

The filters do need replacing at times, you might want to find out when it was last serviced.

#3 ChilliDog

Posted 07 January 2013 - 10:36 PM

I don't have evap myself but my neighbor does. On recent hot days (42deg) she said her place was sitting on 30+ deg. She came to my place to visit to get out of the heat.

I think I have heard they do dump their water ... not 100% sure tho.

#4 bluecupcakes

Posted 07 January 2013 - 10:44 PM

We have had a lot of trouble with it recently it is very old and the straw pads have rotted away.  The man stuffed insulation in it to cover the holes and it seemed to work well for about a month but today seems to be blowing hot air.
By water running off the roof I mean its like a tap running constantly not a drip.  A previous issue we had with it was that the water was running into our ceiling not off the roof but that has been fixed now so I had never noticed water running from the roof before!


#5 MahnaMahna

Posted 07 January 2013 - 10:49 PM

Our house sits around 27/28 on 40+ days if we use the evap air con.

Also we had our air con serviced last year and the guy said that they should NOT be constantly leaking water as this means it is constantly refilling and using excessive water. He said it should refresh every few hours and after the service this is what it started doing.

It doesn't constantly run down our roof though, we have a pipe that feeds it straight to the garden beds.

#6 mollybot

Posted 07 January 2013 - 10:57 PM

Ours is brand new - we got it four weeks ago (YAY !!).

It keeps the house reasonably cool on insane days like today (40 degrees, 100% humidity); it cycles its water, so it only dumps it every four hours or so; it has a pipe - it doesn't run over the roof.

Your Evap sounds clapped out I'm afraid ! If it has no pads, I have NO idea how its cooling....

#7 Chocolate Addict

Posted 07 January 2013 - 11:08 PM

They say (most a/c places) that evap is supposed to sit at around 10C lower than outside temp approx. You also need to leave some windows open. If there is condensation on the floor then you need to open more windows.

Ours was serviced this year as the motor was cactus and also the water pads needed replacing. Apparently the water pads are supposed to be replaced every 2 years. We also had birds nesting in it! lol

I much prefer, and wish we could afford refrigerated a/c but it is too expensive to convert.

#8 Expelliarmus

Posted 07 January 2013 - 11:16 PM

I think ours has a stream onto the roof only because the pipe (and the gutters!) are wearing out. I was told it was supposed to be getting rid of the water it was though. shrug.gif

#9 Feral Madam Mim

Posted 07 January 2013 - 11:29 PM

They do dump water but it shouldn't be happening constantly, ours has a pipe that dumps the water, last year we started noticing that it was constantly dumping water, we had someone come out to take a look at it and some sort of valve needed replacing, it was a simple fix (though we had to wait a week for them to get the part, so they turned it off for us so we weren't wasting water while we waited).

#10 zande

Posted 08 January 2013 - 12:42 AM

Ours works incredibly well in dry heat, even at 40 odd degrees, it won't even be working hard and it's incredibly cool inside. As soon as you add a smidge of humidity, it becomes almost unbearable, and today was just shocking, I think it was high 30s and really high humidity. The only way we get through days like today with the humidity and high temps is alternate between the pool and the house LOL.

If I ever build I will install reverse cycle, Perth has become so much more humid now  mellow.gif  although maybe a mix of the two might work. I love evap for the open doors & windows and most nights it's pretty good, maybe I'll put in a large split system in the main area for the really humid days.

Edited by zande, 08 January 2013 - 12:42 AM.


#11 yummymummycakes

Posted 08 January 2013 - 01:07 AM

I have been in my rental property for 3 years now. We had them check it on the first year as it barely does a thing, and we were told it is normal for them to not work effectively in the high 30's.

Q though, the ducts are really dusty and we can barely feel any air blowing through. Do we need  to get someone in to clean them? and who's expense should it be?

#12 kpingitquiet

Posted 08 January 2013 - 06:21 AM

On our recent 45C day, the hottest room in the house got to about 29. The main living area was more like 25 or 26. We have ducts in 5 rooms. As long as you start it up early, before the house gets really warm, it manages pretty well. But I still miss my good old fashioned US refrig. a/c biggrin.gif

As for water, ours goes down a gutter pipe into the backyard. The ground doesn't get swampy from it, or anything, and it keeps our back lawn green all summer biggrin.gif

They definitely need to be cleaned, have filters replaced, etc. Ours didn't work for crap til we replaced the filter. Also, contrary to every bit of my upbringing, you need open windows for it to work properly. We keep the sliding kitchen door open and crack a few other windows a fair way.

#13 Charli73

Posted 08 January 2013 - 06:42 AM

On a hot day our home will sit around 26 degrees inside.. I have to put it on early though or once it gets too hot it can't cool it down..

It shouldn't run water continuously only dumping water once an hour or so depending on the heat..

#14 BadCat

Posted 08 January 2013 - 07:43 AM

It was 40ish here the other day and 24 in our house.  I love our evap.

I do think it depends on a bunch of other things though.  To keep our house cool when it's stupidly hot we:

- Use the cooling unit to suck in cool air overnight (or leave the cooling on if it's hot) so we start out with a fairly cold house some mornings
- Have external blinds to cut some of the radiant heat
- Have several deciduous trees providing shade to the house
- Have a lot of plants in the garden rather than lots of paving, it can cool the area by several degrees
- Have cavity wall insulation
- Close internal blinds when the sun hits those windows



#15 elizabethany

Posted 08 January 2013 - 07:57 AM

Ours is 24-26 in 40C heat.  As PP's have mentioned, turn it on first thing, before it gets too hot in the house, and have a window or door in every room open a crack.  I have lived in my house for 4 years, and I have only noticed it dumping water a couple of times, so it definitly shouldn't be a constant thing.

#16 Bluenomi

Posted 08 January 2013 - 07:57 AM

When it got to 39 on the weekend it was 27 in our hottest room (which faces directly west with a huge window) with our evap on. The trick is to get it running early before it gets too hot.

We get ours serviced every year or so, it only costs about $120 and they clean the filters and what not.

#17 Mumma3

Posted 08 January 2013 - 08:27 AM

It should definitely not be running water all the time. This indicates it needs a service and probably the dump valve replaced.
You should get around 10-12c drop in temperature, so don't expect it to be "cold" in the house - I much prefer evap for this reason as I hate feeling like I'm in the fridge!!

You must have a window or door open in each room that there is an outlet. Remember that the cooler is pumping a huge volume of moist cool air into the room. If it is closed then you will just get condensation build up and it will feel sticky. A good guide is to put a tissue against the fly screen. If the tissue sticks to the screen then you need to open more windows. If it gently falls to the floor, then your ventilation is perfect:)

I also like evap with kids because they usually leave the door open anyway!!!!

#18 Lyn29

Posted 08 January 2013 - 09:26 AM

.

Edited by bye, 29 March 2013 - 02:59 PM.


#19 bluecupcakes

Posted 09 January 2013 - 12:02 AM

Thanks everyone, I had the repair man out today and the running water constantly was being caused by a blocked gutter causing the water to pool and then eventually running out causing me to think it was running water when the evap was turned off!  Gutter unblocked now so should be all good from now on.
It does cool the house to around 10 degrees below the outside temp so must be working ok original.gif


#20 Kalota

Posted 09 January 2013 - 12:51 PM

Hi OP, it sounds like yours is working fine now - 10 degrees below the outside temp is about what ours does when it is working effectively (low humidity). Ours doesn't drain onto the roof either so glad you got that sorted out, too! original.gif




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users

 

Special offer: The Baby & Toddler Show 2014

At The Baby & Toddler Show, you?ll find everything you need to get ready for your new arrival and guide you through the early weeks and years of parenting.

The words I hated hearing as new mum

It was less than a week after my son was born that I first heard it - from my mother.

To the pharmacist who sold me baby formula

On the rare occasion I catch sight of you at school, or around town, I think back to our earliest exchange. I?m sure you have no recollection of it at all.

Babies may benefit from autism therapy

Children showing signs of autism don't usually receive early intervention until well into toddlerhood or later, but a new study suggests infants with symptoms of the developmental disorder might benefit from therapy from as early as six months.

Knatalye and Adeline born with an everlasting bond

Knatalye Hope and Adeline Faith are a lot like any other identical twin girls, but there is one dramatic difference: they're joined at the chest and shares several internal organs.

The question this dad wishes he'd asked his wife

I should have seen that my wife wasn't the same person I'd fallen in love with, but we were both too focused on simply trying to get by.

Why we should talk about the deaths of the Hunt children

The deaths are too horrible even to think about. Yet we owe it to the children - Fletcher, Mia and Phoebe Hunt - to think long and hard about it all.

Baby dies of meningococcal weeks after vaccine application denied

A six-month-old girl has died from meningococcal disease just weeks after an application for government funding of a vaccine for the most deadly strain of the virus was rejected.

Finding the right balance when playing with your kids

Being too involved in our children?s play and not allowing our kids enough free time for unstructured activities can mean our kids miss out on the value that play offers.

Creative DIY light shades

The Pop Light light shade comes in a flat pack already made - it's up to you to design it as you'd like.

The battle of iParenting versus imagination

Have we forgotten how to be imaginative, resourceful parents?

Why movement is so important for your baby's growth

Letting your child move as much as possible in the early years ? using all senses, engaging in the real world, preferably outside ? will help them grow up healthier, smarter, calmer and stronger.

Video: Toddler not keen on clean-shaven dad

This little girl thought she was taking part in a standard game of peek-a-boo, but her dad had a surprise for her.

When will I feel like myself again?

At some point I became 'me' again, but not the same me that I was ... and that?s not a bad thing.

Our Watch: ending the national emergency of domestic violence

An ambitious new national initiative aims to address the "national emergency" of domestic violence across Australia.

Decrease in stillbirths in late pregnancy and older mums

There has been a fall in the number of stillbirths among some groups of women despite the overall rate remaining stable, a new report reveals.

My baby was permanently injured during birth

My baby was a few months old when we first heard the term ?brachial plexus birth injury? and the heart wrenching news that he may never gain full function of his arm.

Being a yo-yo mama is the rhythm of motherhood

A flip-flop happy-sad can occur in the same minute, the same second. And it continues forever, throughout a yo-yo mama's tenure, beginning with pregnancy.

Is it okay to ask for money instead of gifts?

First it was weddings. Then it was engagement parties. Now it seems christenings are following the trend of asking guests for money in lieu of gifts.

Crash testing new parenthood

The new documentary series Crash Test Mummies & Daddies takes a fly-on-the-wall look at the first months of life with a newborn.

Itching for a solution to eczema

Around 30 per cent of children live with eczema every day. A dad shares his son's story and gets advice from an expert.

Video: The challenges and joys of making new mum friends

This hilarious video shows how making new mum friends can be awkward - but reassures that it is possible.

Download now: Essential Kids Activity Finder app

Got bored kids? Quickly find the best activities for kids wherever you are in Australia with the Essential Kids app.

 
Advertisement
 
Advertisement
 
 
 

What's hot on EB

Special offer: The Baby & Toddler Show 2014

At The Baby & Toddler Show, you?ll find everything you need to get ready for your new arrival and guide you through the early weeks and years of parenting.

Win a House of Magic prize pack

To celebrate the release of the new movie House of Magic, we have 10 double passes and magic sets to give away just in time for these school holidays. Enter Now for a chance to win!

Losing yourself to motherhood

While watching your baby grow into a unique little person is exciting and wondrous, the intensity of meeting everyone else?s needs can ever so sneakily overtake your own needs for self-care.

Tearing during delivery: the facts

Almost all women will experience bruising, grazing or tearing after a vaginal birth. Depending on the degree of tearing, there are various treatments available.

6 tips for a day out with a baby and toddler

Outings can be lots of fun with the kids, but there are inevitable challenges. Here's some information about days out to help you be a little more prepared.

Why I invited a dozen people to watch my son's birth

I sent invitations on burgundy scrapbooking paper stamped with a field of poppies, and told each person why I wanted him or her there. I warned that there would be nudity.

Getting labour started: tips for a natural induction

When your baby?s due date comes and goes without so much as a pop - let alone a bang - it can be disheartening. Mums and a doula share their stories of natural inductions.

7 mistakes old hands make with new babies

As I sat across the table from my friend ? me, a seasoned mother of three; her, a brand new mum ? I thought of all the mistakes an old-hand parent can make when visiting a newborn baby.

That's my boy: a dad's diary of the first 4 months

Unbearable anxiety, unspeakable joy, constant exhaustion and bouts of frustration ... The many shocks of first-time fatherhood resound in a dad's diary of his son's early months.

One of the most important things a new mum can do

Finances may not be as cute as a newborn, but with many women?s working arrangements changing post-baby, monetary matters need attention too.

'I wanted a heart over the i'

After naming her other daughter Princess Tiaamii, glamour model Katie Price needed a special name for her new baby.

Personalised baby gifts

We've scoured the internet to find gorgeous personalised keepsakes and nursery decor to record baby name and dates. They make great gifts for christenings, name days and birthdays! (All prices in AU.)

 

Reader offer

2 FOR 1 TICKET OFFER

For Shopping, For Advice, For Baby & You. Enjoy a special day out with fabulous shopping from over 200 brands, leading parenting experts offering advice on a range of topics, and amazing children?s entertainment

 
Advertisement
 
 
Essential Baby and Essential Kids is the place to find parenting information and parenting support relating to conception, pregnancy, birth, babies, toddlers, kids, maternity, family budgeting, family travel, nutrition and wellbeing, family entertainment, kids entertainment, tips for the family home, child-friendly recipes and parenting. Try our pregnancy due date calculator to determine your due date, or our ovulation calculator to predict ovulation and your fertile period. Our pregnancy week by week guide shows your baby's stages of development. Access our very active mum's discussion groups in the Essential Baby forums or the Essential Kids forums to talk to mums about conception, pregnancy, birth, babies, toddlers, kids and parenting lifestyle. Essential Baby also offers a baby names database of more than 22,000 baby names, popular baby names, boys' names, girls' names and baby names advice in our baby names forum. Essential Kids features a range of free printable worksheets for kids from preschool years through to primary school years. For the latest baby clothes, maternity clothes, maternity accessories, toddler products, kids toys and kids clothing, breastfeeding and other parenting resources, check out Essential Baby and Essential Kids.