climate control in winter

scope22

its winter, i have a touring, heat set on 80, when i turn on climate control the heat comes on but also the AC comes on so i have to press 2 buttons each time to get heat working, wtf?

sparky

Welcome to Nissan climate controls fail. My Murano is the same.

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nepali

80? Dang! I would bake in that car!

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SouthArk370Z

Nissan, in their infinite wisdom, decided that you need to dehumidify the cabin air when the heater is on (probably to keep the windows clear). The HVAC system also likes to change whether you are pulling in outside air or recirculating inside air when you switch modes. You get used to it.

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Nillaz

I found that this is one of the single most annoying things about the Z. I'm used to it now but it's still friggin' annoying toggling the AC/circulation settings all the time.

DEpointfive0

Are you sure you're doing it right?
I'll only have the A/C come on if it was on last time or if I left the car in recirculate...


I have Nav too, so our system IS different

Augustus

I understand the frustration, as it seems weird to run the AC in the winter. But I don't think this is unique to Nissan. I've owned a couple of Subarus, an Acura, a Saab, an Audi, and a couple of Volvos with automatic climate controls and, of course, my Z. On "full auto", they'd all run AC basically all the time, even in the winter. The Saab's climate control was the best - it'd cycle the AC as needed. But the rest mostly just apparently ran the AC all the time, based on indicator lights or displays. The idea is to control interior humidity levels. Humidity that's coming from passengers' exhaled breaths.

If you don't like this behavior (I don't either...), then don't leave the fan control knob on "AUTO". Control the fan speed manually and it won't turn on the AC automatically unless you select the full-windshield defrost mode (which every car with AC fires the AC in defrost). That's what I do in the winter, and what I've generally had to do with every auto climate control vehicle I've owned, because they've all (except the Saab), worked like that.

nmjaxx9

Hit the AC again you'll be fine.

cossie1600

The button might be on, it doesn't mean the AC is engaged

scope22

its engaged, when you turn off ac the heat gets much hotter right the way

scope22

thanks for reponses, i wasn't sure if there was a setting for that

sparky

The compressor is running though robbing you of horsepower and fuel.

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2012 370Z GM 7AT/JWM LEDs / 3M clear bra / 35% tint / GTR start button / FI CBE SS 18" RES / Momo shift knob / K & N Typhoon / Z1 hood struts / H&R 20mm f/r / illuminated kickplates

cossie1600

There is 330HP of them, doubt a little AC makes a dramatic difference. There is also a WOT AC bypass switch anyway.

There is a reason why they have AC clutches. It can engage and disengage as it is needed. Do you think the AC runs 24/7? If so, all your AC piping will burst from being too cold consistently.

luigi90210

thats 2hp you lose with AC off though

id rather be all sweaty then lose 2hp

Shotta

Lol

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