Slow and Sluggish when using air con

[farmlad1983]

Hi i have a 05 reg fiesta Zetec climate.

I have been noticing that when i'm using my air con, the car seem toi lack power and seem to be really sluggish. Is this a common problem, as i'm sure the car never used to be like this when i first got it 2 years ago

i have changed spark plugs and also the air filter.

would i need to take the car to a dealership to check its E.C.U/

comments much appriciated

[Steve]

Air con does drain a car but not to the point its affects its performance that much.

[farmlad1983]

I found that when i have the air con on and at standstill requires the accelerator flat on the floor to move the car. I'm sure i never had to do that. I even found it struggling on slight hills with the air con on as well.

surely if it only take a small amount of performance away from the car, it shouldn't be really effecting it up hills and from standstill??

My car is a 1.4 zetec climate 05 reg