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Climate control algorithm V7.0

flyeyes

Member
May 10, 2015
141
152
Memphis, TN
Something that seems to be missing in the dozens of autopilot threads that are metastasizing all over the forum is feedback on the climate control system updates.

Like others, I had been disappointed in the the HVAC compared to other (older, cheaper) cars I'd owned. I generally resorted to lowering the temp setting to about 64 or just manually adjusting fan speed which is tedious.

With 7.0, it's now become pretty much "set and forget." I just leave the thermostat where I want it and it works.

This is progress ;)

Admittedly, weather has been milder than the middle of summer, but I'm very pleased
 

fosh

Member
May 22, 2014
23
15
Texas
The HVAC works fine for me, but this morning, while sitting in the car while in Park, I noticed a sound (slight vibration) every 10 seconds (and it would last for a few seconds) -- as if a pump or fan was starting then stopping. This sound and vibration would stop if I turned off the HVAC. I sit in carpool every weekday morning, and I never had this sound prior to V7.0. I have a June, 2014 build S85.

Anyone else experience this?
 

Stoneymonster

Active Member
Jan 8, 2013
1,787
1,064
Aptos, Ca
The HVAC works fine for me, but this morning, while sitting in the car while in Park, I noticed a sound (slight vibration) every 10 seconds (and it would last for a few seconds) -- as if a pump or fan was starting then stopping. This sound and vibration would stop if I turned off the HVAC. I sit in carpool every weekday morning, and I never had this sound prior to V7.0. I have a June, 2014 build S85.

Anyone else experience this?

It's the A/C compressor. When it is running full tilt you can feel the vibration on most Tesla's. Both of mine have done it. Sounds like they are cycling it more often rather than leaving it on for long periods.
 

Vger

Active Member
Apr 10, 2009
1,781
209
Salt Spring Island, BC, Canada
It's the A/C compressor. When it is running full tilt you can feel the vibration on most Tesla's. Both of mine have done it. Sounds like they are cycling it more often rather than leaving it on for long periods.

More generically, it is the heat pump (works both directions). It is cold enough now in my Canadian garage that I was hearing it while the car was warming itself as I was reading the release notes (on our Signature non-AP car). I DID notice that the cycling frequency is now higher than it used to be prior to v7.0.
 

Footbag

Member
Jun 29, 2013
527
152
Edmonton, Canada
Like others, I had been disappointed in the the HVAC compared to other (older, cheaper) cars I'd owned. I generally resorted to lowering the temp setting to about 64 or just manually adjusting fan speed which is tedious.

With 7.0, it's now become pretty much "set and forget." I just leave the thermostat where I want it and it works.

I agree, in the short time with the car, HVAC seems improved. It will be interesting to see what other weather conditions reveal. Also, I wonder if this 'more effective' HVAC has a positive/negative impact on range?
 

mspisars

Active Member
May 23, 2014
2,061
1,386
Charlotte, NC
I agree, in the short time with the car, HVAC seems improved. It will be interesting to see what other weather conditions reveal. Also, I wonder if this 'more effective' HVAC has a positive/negative impact on range?

That was in the tesla release notes that were posted somewhere here... that HUGE HVAC improvements at no additional energy cost...
 

MrJones390

Space Boat
Jun 26, 2015
246
47
Los Angeles
The HVAC works fine for me, but this morning, while sitting in the car while in Park, I noticed a sound (slight vibration) every 10 seconds (and it would last for a few seconds) -- as if a pump or fan was starting then stopping. This sound and vibration would stop if I turned off the HVAC. I sit in carpool every weekday morning, and I never had this sound prior to V7.0. I have a June, 2014 build S85.

Anyone else experience this?

My local service center installed an acoustic noise dampening device for the HVAC. Might be worth giving them a call.
 

Footbag

Member
Jun 29, 2013
527
152
Edmonton, Canada
That was in the tesla release notes that were posted somewhere here... that HUGE HVAC improvements at no additional energy cost...

Yes, I recall (now) that such was said... still, wonder how accurate the statement is (wouldn't be the first time something said != reality in Tesla land). Not that I am complaining (or have reason to think it is less efficient)... simply curious and am sure someone out there shortly will post some findings on the matter!
 

Coiled

Member
Nov 23, 2014
173
39
Las Vegas, NV
My local service center installed an acoustic noise dampening device for the HVAC. Might be worth giving them a call.
Do you have any more info on this? Did the device have a name?

Don't know if I need it yet, but I'm definitely noticing the increased AC on/off cycling. Maybe they are trying to run it only at optimum speed? All that cycling seems like it would be inefficient and hard on the system.
 

gregincal

Active Member
Oct 26, 2012
3,763
2,294
Santa Cruz, CA
Maybe I just need to get used to it, but I felt I had to set the temperature quite high to avoid being cold. This morning it was 68 outside and the temp set to 71 and I had to raise it to 74. I agree that the new system is cooler, but I'm not sure yet whether it's better.

I did get an almost record low wh/mile on my commute today, so I'm happy with that.
 

Todd Burch

Voltage makes me tingle.
Nov 3, 2009
7,850
28,920
Smithfield, VA
This has come up before and is incorrect, per some Tesla folks I asked. It is NOT a heat pump. Heating is ohmic, like a toaster.

Actually, you're both right. There is a heat pump, but when the temperature drops below where it's effective, resistive heating (like a toaster) kicks in.
 
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ericallyn

Member
Jan 2, 2013
75
10
Skaneateles, NY
I agree with the OP. In a 350 mile trip Friday (going through temp ranges from 40s to 70s), I noticed huge improvement in my S85D's Climate Control. In the past, I would have to tweak the temp settings through a trip. This time, it was "set and forget". Thank you Tesla!
 

BriansTesla

Old school meets new tech
May 8, 2012
302
465
AI WA
Agree with the OP. I had been frustrated that some days the heater seemed right out of my 65 VW Beetle. Now it starts up much better although I needed to set it to a higher temp than I am used to.

I did notice while sitting in a ferry line that there was some thumping up front that I had not heard before. Not sure if that is heat pump.
 
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Reactions: markn455

Brightonuk

Member
Mar 16, 2014
418
50
Plantation
The acoustic noise dampening device is a sound dampening blanket (that did not work for long), my car sounds horrific when the AC is at full tilt.

(I have to pull the NVX Amps installed in the frunk before Tesla will look at it again)
 

Jool

Member
Jun 26, 2015
285
6
San Diego, CA
Climate control is much better after the 7.0 update. I used to keep the temperature set at 67, now I set it to 70 to avoid freezing my butt off!
 

stsanford

Member
May 21, 2013
81
5
Long Island, NY
Odd, it's quite chilly in the N.E. today and I had to set the car to 83 to make it even close to comfortable. When I dropped it to 81 after reaching desired temp, it was blowing COLD air through the upper vends. I'd say with mine, the 7.0 Update has not had a positive effect. The car is new for the season, my 60 was incredible, but maybe the P85 isn't as effective in the cooling dept.?
 

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