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Does blasting the a/c in my car really burn more gas?

  • Thread starter Thread starter hog#head#cheese
  • Start date Start date
H

hog#head#cheese

Guest
Just curious because im tired of paying 100.00 to fill my truck up id rather sweat
 
IIRC, lumberg said this isnt really true
if anything, having the recirculate feature engaged while AC is on in your vehicle creates more wind resistance (instead of the air flowing through y our vehicle)
 
I noticed that it did on my old honda civic........then again with the tiny engine, if you were going up a hill and turned on the AC, you felt it bog down a little...
 
I was just always brainwashed as a poor ass kid that the a/c is a luxury and should be used in moderation
 
i think mythbusters did this on an episode if i can remember correctly

the computer siad that ac on was better but in reality no ac was better

youtube may have the vid
 
ndto said:
i think mythbusters did this on an episode if i can remember correctly

the computer siad that ac on was better but in reality no ac was better

youtube may have the vid

Mythbusters def. did an episode and then had a follow-up comment. AC DEFINITELY burns more fuel.
 
Well i guess its gonna be windows down for this broke bastid
 
Im almost thinking that if your truck takes a hundred bucks to fill up, it probably makes a lot of torque so it could spare a few lbs to run the compressor and not make a huge difference........just a thought tho.
 
hog#head#cheese said:
Well i guess its gonna be windows down for this broke bastid
if you keep the rear windows down with the recirculate OFF you'll get better airflow through the car and likely less wind resistance
 
At in-town speeds, the AC will eat gas. On the highway there's potential for the open windows to creat an adverse aerodynamic condition that would be worse.

BUT, my car has a MPG meter on its nag screen, and even at 70 on the crosstown expressway I'm better off with the AC off and a window open.
 
Razorguns said:
Sure if you don't mind sweating like a pig just to save 3 DOLLARS a week

r

Its more than 3.00 i promise you i can actually watch my needle move when im punching the gas
 
hog#head#cheese said:
Its more than 3.00 i promise you i can actually watch my needle move when im punching the gas

I would pay $40/week if it meant I could drive comfortably during the hot summer while other morons sweat. Somehow I doubt it's that high.

Some things in life I do not get cheap on. Food, Sex, Comfort. (tho I do get cheap with my women, but that's another thread!)

r
 
also, dude, if youre that concerned about how much gas you chew up with the AC on, and youre spending $100 to fill it up, then thats a big ass tank. have u considered trading that bad boy in for a more compact car that may get better mpg?
 
rvakud.jpg


He says this takes a hundred bucks to fill? Head cheese this was a stealth candid pic from yesterday.

I always told ta wear your seat belt!
 
Smurfy said:
also, dude, if youre that concerned about how much gas you chew up with the AC on, and youre spending $100 to fill it up, then thats a big ass tank. have u considered trading that bad boy in for a more compact car that may get better mpg?
trading in a truck right now is not a good idea.



unless you're okay with getting 5 bucks for it.


2009 model trucks are going for as low as 9K here. a used, trade in isn't going to be worth shit.
 
gasre.jpg
 
I did a test in my car with it. I ran without it and ran with it. My computer in the car tells me fuel comsumption as it's being used. I found that it cost me one extra liter/quart per 100k's/60 miles. So yup it does.
 
captainahole said:
I did a test in my car with it. I ran without it and ran with it. My computer in the car tells me fuel comsumption as it's being used. I found that it cost me one extra liter/quart per 100k's/60 miles. So yup it does.

did you compare it to riding around with your windows down. . .like you would do. . .during the summer. . .when it's hotter than balls??

of course no a/c and windows UP will give you better gas mileage. . .so will taking the belt off your power steering pump and using your armstrong steering instead. . .
 
digimon7068 said:
did you compare it to riding around with your windows down. . .like you would do. . .during the summer. . .when it's hotter than balls??

of course no a/c and windows UP will give you better gas mileage. . .so will taking the belt off your power steering pump and using your armstrong steering instead. . .

Yeah I did but it still didn't show a noticable difference as it did with the air on
 
Mr. dB said:
At in-town speeds, the AC will eat gas. On the highway there's potential for the open windows to creat an adverse aerodynamic condition that would be worse.

BUT, my car has a MPG meter on its nag screen, and even at 70 on the crosstown expressway I'm better off with the AC off and a window open
.


right

that's how i know AC burns more gas. MPG/miles left changes a bit faster
 
AC seems to take the biggest hit on economy when I'm accellerating. If I turn the AC off until I'm up to cruising speed, it seems to make less of a difference when I turn it on, but if I start my journey from home with the AC on the whole way, my trip average economy will be quite poor.

For example, on my 5 mile commute to work every day, under the best conditions (i.e. I hit green lights all the way, which is do-able), I can get over 30 MPG. That's on surface streets without using the crosstown Interstate expressway. I try to average 40-45 MPH. There's a lot of elevation change, but my home is at a higher elevation than work, so on average the trip is downhill. If I leave home with the AC on, about the best I can do is 22-23 MPG. If I do the first mile or so with the AC off and then turn it on after I've climbed the highest hill and am on the descent, it'll be more like 26-28 MPG.

I cannot match those numbers taking the same route home from work.

I'd have a lot more fun in my car if it didn't have the nag screen. I'd probably punch it a lot harder and get into the turbo boost more. Ignorance is bliss.

It's not worth it to take the Interstate cross-town expressway, even though it takes me straight to work, because the journey isn't long enough to average out the fuel lost by accellerating up to highway speed, just to exit off three miles later. I fare better taking the surface route.
 
with the heat and humidity new orleans endures this time of the year (the LOW night time temps and humidity levels are both in the low 80's), no a/c is NOT an option for me.

to arrive at a destination without my shirt stuck to me, soaked into 3 different colors, to not smell like a farm animal....i'll pay the price of a couple extra gallons of gas per week.
 
depends on the car...When I drove my parents SUV, I barely noticed a difference. In my car now...it's minimal, but I notice it. I'm with rg, though. I have black interior and would roast without AC in the summer. Fug that.
 
I noticed using the AC on medium all the time cost me roughly 1-1.5mpg.
 
nefertiti said:
depends on the car...When I drove my parents SUV, I barely noticed a difference. In my car now...it's minimal, but I notice it. I'm with rg, though. I have black interior and would roast without AC in the summer. Fug that.

my xterra gets better mileage with the a/c compared to having the windows rolled down. . .but the difference is negligible. . .the difference in comfort is night and day. . .a/c wins. . .
 
today i was gonna challenge it till the sweat start beading than back to a/c
 
hog#head#cheese said:
I was just always brainwashed as a poor ass kid that the a/c is a luxury and should be used in moderation
same here...my mechanical purist father believed that the a/c components corrupted the design of a car's engine and put undue and unwanted strain, vibration and stress on the motor, made the car hard to work on...he resisted a/c equipped cars for decades.... :rolleyes:

his son learned early on to compromise his automotive principles... :FRlol:
 
hog#head#cheese said:
today i was gonna challenge it till the sweat start beading than back to a/c
this time of the year in new orleans i break out sweating by the time i walk down the driveway to the sun overheated car... :laugh2:
 
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