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When Do People Turn on Their AC?

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  • May 24th, 2020 10:45 am
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[OP]
Sr. Member
Jan 22, 2012
601 posts
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Bradford

When Do People Turn on Their AC?

I always worry turning it on too early and then the weather gets cool again and you need the furnace .
Last edited by Topher86 on May 24th, 2020 10:27 am, edited 2 times in total.
32 replies
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Oct 24, 2005
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Burlington
Once the temp together with humidity makes it feel like 35 or above.
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Mar 18, 2005
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Niagara Falls
I had to turn mine on for 2 hours tonight... Upstair was 27, kids room has very poor circulation and I was too lazy to go downstairs and get fans out to help push the cool air around.

I have two unhealthy neighbours who had their's on earlier this week and all day today.
[OP]
Sr. Member
Jan 22, 2012
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Bradford
Yeah, I’m ok, was more worried about the 2 year old. His room is 27.
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Jun 11, 2010
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ottawa
When the dog pants. It's been cycling all day today. To be honest the extra cost is worth the comfort.
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Aug 29, 2011
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Mississauga
Yeah, you guys in the Ottawa Valley got a taste of summer today! Down here, not as much due to the wind of Lake Ontario.

I'll probably turn mine on tomorrow for the first time this season just to make sure it works. Supposed to hit low 30's and humidity around here next week.
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Jan 25, 2007
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Paris
mrweather wrote: Yeah, you guys in the Ottawa Valley got a taste of summer today! Down here, not as much due to the wind of Lake Ontario.

I'll probably turn mine on tomorrow for the first time this season just to make sure it works. Supposed to hit low 30's and humidity around here next week.
It was hot as F today in Muskoka. Came close to turning it on but instead just abandoned the cottage assuming it would cool off. Still 21 at 9:30pm though!
[OP]
Sr. Member
Jan 22, 2012
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Bradford
Humidex tomorrow of 28! Lots of traffic on the 400 North.
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Nov 9, 2011
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Toronto
My house was at a comfortable 20C until the wife got home and turned on the HEAT.. Now I am sweating with 25C sigh
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Jan 18, 2003
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Topher86 wrote: Yeah, I’m ok, was more worried about the 2 year old. His room is 27.
27 in a room is too warm imo...lol
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Oct 13, 2008
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Durham
We only use AC when it's constantly over 35 Celsius or when we have company on a hot day.

Over the past 3 summers, we've had out AC less than 10 times.

Still the same 2-ton AC Unit from the Builder in 2006.

So much air flow in the home with windows and doors opened. No need for AC. We're normally around 22 Celsius during the day and about 17 Celsius at night.

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Feb 11, 2007
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Topher86 wrote: I always worry turning it on too early and then it gets cool again.
You have a thermostat right? Who cares if it gets cold, your tstat isn't going to turn it on.
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Jun 11, 2010
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ottawa
Honest question, what's the point in having ac if you don't use it by the time your indoor temp is 27-30+ celsius? I could probably keep my house around 30c max all summer except one or two days by having windows open. But seriously why bother buying one if it doesn't get much use?
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Jul 7, 2017
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SW corner of the cou…
barqers wrote: Honest question, what's the point in having ac if you don't use it by the time your indoor temp is 27-30+ celsius? I could probably keep my house around 30c max all summer except one or two days by having windows open. But seriously why bother buying one if it doesn't get much use?
Not necessarily temperature but the humidity that is insufferable. A/C fixes that (actually reduces humidity before it cools).
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Nov 18, 2005
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Kitchener
Probably a good time to try it now and make sure it's working well before the heat wave hits
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Aug 18, 2009
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Toronto
thriftshopper wrote: Not necessarily temperature but the humidity that is insufferable. A/C fixes that (actually reduces humidity before it cools).
Not only a comfort issue but too high humidity can lead to mold problems.
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Jul 7, 2017
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VertigoM wrote: Not only a comfort issue but too high humidity can lead to mold problems.
Metals like brass can start to oxidize too. Wood will expand and possibly warp.
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Sep 8, 2007
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Way Out of GTA
Lols at worrying about Turing on ac “too early” here in Canada our cooling season is so short ...maybe 5 months? So as soon as it gets uncomfortable...on it goes. Life’s too short to worry about saving $10-15 because it’s a week too early.

And this isn’t like switching snow tires to all season. Pretty much all it requires is flicking a switch in the case you need to go back to heating.
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May 23, 2009
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Mississauga
I've already run mine a few times this season. An hour each on the 17th, 20th and 21st. Two and a half hours last night.

Besides our comfort feeling it does a better job taking care of our overall humidity control better than our standalone dehumidifier and does not cost much more to run. My RH is already bordering 50% and I have a lot of new hardwood in the house.
Last edited by bubuski on May 23rd, 2020 8:08 am, edited 1 time in total.
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May 30, 2005
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cartfan123 wrote: Lols at worrying about Turing on ac “too early” here in Canada our cooling season is so short ...maybe 5 months? So as soon as it gets uncomfortable...on it goes. Life’s too short to worry about saving $10-15 because it’s a week too early.

And this isn’t like switching snow tires to all season. Pretty much all it requires is flicking a switch in the case you need to go back to heating.
Yeah, I'm not sure what the problem is. If you have a smart thermostat, you can even just leave it on auto. AC comes on above a certain temp, heat turns on below a certain temp. Fan only in the middle.

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