psengsouriya

AC always turns on when im using the heater, Yeah I can turn it off but its just common sense if Im going to warmer weather why the AC turn on its not the temp im worried about when the AC turns on all the time its the AC thing in the engine turns on and makes my car work hard and suck up more fuel when AC is on.

PACman

You mean you're just increasing the temperature and the A/C automatically kicks in? That's odd. Mine doesn't do that. Are you running it on AUTO mode?

psengsouriya

nah man im just saying. When I have all my heating and cooling turned off. and when I turn it back on and its like at 85 degrees why does the AC still turn back on?

No matter what if you turn the heating and cooling system off your AC will always turn back on once you turn it on.

Its winter god damn it whys the heater turning on lol
cars got a tempeature sensor and everything and the car still doesnt know? What a dumb system.

The more you use AC the more wear and tear on engine parts and AC. I say save it for really hot summer days.

psengsouriya

2005 acura tsx Auto Transmission, No I am not using Auto mode or Dual mode

PACman

PM sent

It's nothing to get all worked up over. I PM'd the answer to you.

LukeaTron

It's turning on to control the humidity. The A/C always behaves as though it's in auto mode unless you explicitly put in either off or on mode.

nbtx

Well, you're not really using the "heater", you are using the HVAC (heating, ventilation and air conditioning) system. You pick a temperature and the system makes the right choices which usually includes running the AC compressor to dehumidify the incoming air to prevent window fogging and other general discomfort.

See if the compressor engages below freezing temperatures and report back - I'll posit that it does not engage below 35 degrees (or so).

davidspalding