Calling all smart people

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  • markseven
    R3V Elite
    • Sep 2006
    • 5327

    #1

    Calling all smart people

    I turned off the AC when I left the house at 1:15pm. It was 80° inside at that point.

    I returned home at 4:45pm, and it was 85° inside.

    Question: would it have been more efficient to have the AC maintain 80° over the 3.5 hours I was away, or for the unit to remain dormant and then work to cool the house down from 85° to 80°?
    I Timothy 2:1-2
  • slammin.e28
    שמע ישראל
    • May 2010
    • 12054

    #2
    I have gone back and forth on this issue many times....

    I ended up concluding that I'd rather walk into an already cool house from the dank outdoors, than walk into a dank house from the dank outdoors then have to wait for the house to cool down.

    OFC my house has no central air....so there's that.
    1974.5 Jensen Healey : 2003 330i/5

    Comment

    • chadthestampede
      No R3VLimiter
      • Jul 2008
      • 3600

      #3
      Better to turn it off.
      Originally posted by LJ851
      I programmed my oven to turn off when my pizza was done, should i start a build thread?

      Feedback

      Comment

      • straight6pwr
        No R3VLimiter
        • Sep 2004
        • 3450

        #4
        its a myth that a constant temperature is more efficient.

        turning the system off and letting the temp go up (in the summer) and down (in the winter) while you are out is more efficient.

        i've been living in apartments in Wisconsin winters, and you can easily cut a heating bill in half by setting a schedule and patching up leaky windows. same applies for summer and AC.

        Comment

        • Todd Black 88
          No R3VLimiter
          • Oct 2007
          • 3449

          #5
          What does the house look like?
          Lots of glass?
          Full coverage blinds you close?
          What is the outside temp?
          What temp do you want the house at?
          Is your ac maxed out?
          Originally posted by codyep3
          I hope to Christ you have looks going for you, because you sure as fuck don't have any intelligence.
          2001 silver/Blk 325 cabby. SOLD
          1988 Blk/Blk e30 factory wide body kit car SOLD
          1992 DS/BLK 325 m-tech II apperance pack cabby SOLD!
          2002 325xit Sil/blk. SOLD
          2012 328i xdrive touring. Wht/blk. SOLD
          2009 135 cabby. monacoblue/blk leather SOLD
          2007 Z4m coupe. Silver grey/black/ aluminum. 1of50
          2010 F650gs twin
          2016 M235i cabby. Mineral grey/Red leather

          Comment

          • Cabriolet
            R3V OG
            • Apr 2010
            • 9620

            #6
            Running your AC at peak hours is costly. my 1br duplex has dual zone. so we don't even ac the bathroom and bedroom during the day. But we always shut off the AC if we are going to be gone more than an hour. My house on a hot day will raise 2.5°/hr w/o the AC on. But it's also not ball sweat humid here. But as a general rule I turn it off if you are gone for more than an hour.
            Much wow
            I hate 4 doors

            Comment

            • Exodus_2pt0
              R3V Elite
              • Dec 2011
              • 5943

              #7
              My Thermostat let's me program different temps for different times.

              My wife stays home, so I don't use it. But, it can be set to start cooling say an hour before you get home, or automatically raise a degree or two at night, ect. Ect.

              Pretty damn cool gadget that I don't have a need for. But if I were single I'd use the hell out of it.
              No E30 Club
              Originally posted by MrBurgundy
              Anyways, mustangs are gay and mini vans are faster than your car, you just have to deal with that.

              Comment

              • Restoman
                E30 Fanatic
                • Jun 2006
                • 1311

                #8
                Fuck sweating. Keep it at a constant temperature. Winter maybe when I was single I'd let it coast but natural gas is cheap. I don't mind cold in the South so much. With pregnant wife and two kids at home all day it stays at 74-75 all day and night. Less stress on the system is a concern. Break your HVAC system and electricity cost is thrown out the window. Munch on that!
                i'lldoitforacaravan

                Comment

                • Restoman
                  E30 Fanatic
                  • Jun 2006
                  • 1311

                  #9
                  Ummm, besides north of 4K rpm...where do you live? 80 F when you left the house? that's rough.
                  I like to leave the house with vagina not sweating nor coming home to sweaty vag.
                  i'lldoitforacaravan

                  Comment

                  • lambo
                    Captain Scene Points
                    • Feb 2010
                    • 10953

                    #10
                    It would probably be most cost effective and comfortable to upgrade to a programmable thermostat if you're gonna be gone at predictable times throughout the day.

                    Edit: Not probably. Definitely.
                    Last edited by lambo; 08-12-2015, 07:43 PM.

                    Originally posted by SpasticDwarf;n6449866
                    Honestly I built it just to have a place to sit and listen to Hotline Bling on repeat.

                    Comment

                    • Hooffenstein HD
                      Banned
                      • Nov 2012
                      • 1388

                      #11
                      Save money by turning it off forever and dealing with your climate.

                      Comment

                      • Todd Black 88
                        No R3VLimiter
                        • Oct 2007
                        • 3449

                        #12
                        Originally posted by Restoman
                        Fuck sweating. Keep it at a constant temperature. Winter maybe when I was single I'd let it coast but natural gas is cheap. I don't mind cold in the South so much. With pregnant wife and two kids at home all day it stays at 74-75 all day and night. Less stress on the system is a concern. Break your HVAC system and electricity cost is thrown out the window. Munch on that!
                        Geeze, I couldn't sleep at that temp.

                        My tstat is programmable, and the heat is set at 69 when occupied, and drops to 64 when unoccupied or overnight. AC set at 74 occupied and overnight, 78 unoccupied.
                        Originally posted by codyep3
                        I hope to Christ you have looks going for you, because you sure as fuck don't have any intelligence.
                        2001 silver/Blk 325 cabby. SOLD
                        1988 Blk/Blk e30 factory wide body kit car SOLD
                        1992 DS/BLK 325 m-tech II apperance pack cabby SOLD!
                        2002 325xit Sil/blk. SOLD
                        2012 328i xdrive touring. Wht/blk. SOLD
                        2009 135 cabby. monacoblue/blk leather SOLD
                        2007 Z4m coupe. Silver grey/black/ aluminum. 1of50
                        2010 F650gs twin
                        2016 M235i cabby. Mineral grey/Red leather

                        Comment

                        • Exodus_2pt0
                          R3V Elite
                          • Dec 2011
                          • 5943

                          #13
                          Shit ours stays at 77-78. You get used to it.
                          No E30 Club
                          Originally posted by MrBurgundy
                          Anyways, mustangs are gay and mini vans are faster than your car, you just have to deal with that.

                          Comment

                          • mrsleeve
                            I waste 90% of my day here and all I got was this stupid title
                            • Mar 2005
                            • 16385

                            #14
                            Biggest question is why is it 80 inside your house with the a/c ON..... this is the point of climate control, to keep it comfortable not barley tolerable..... I bitch when its 80 OUTSIDE
                            Originally posted by Fusion
                            If a car is the epitome of freedom, than an electric car is house arrest with your wife titty fucking your next door neighbor.
                            The American Republic will endure until the day Congress discovers that it can bribe the public with the public's money. -Alexis de Tocqueville


                            The Desire to Save Humanity is Always a False Front for the Urge to Rule it- H. L. Mencken

                            Necessity is the plea for every infringement of human freedom. It is the argument of tyrants.
                            William Pitt-

                            Comment

                            • doorman
                              Grease Monkey
                              • Mar 2015
                              • 360

                              #15
                              72 degrees all day and night A/C wise. I sweat all day at work and don't want to at home (unless me and the wife are having nuptials).
                              67 when its heating season when we are home. 63 at night/during the day when we aren't.

                              Comment

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