[NY_Rob]

Interesting, thank you!

Too bad about the lack of heat pump, perhaps later models will get the upgrade. The heat pump in my MY worked great.

 

[ColeAK]

I’m glad to hear no heat pump. Everyone I know with a model Y is having major issues when it gets very cold. Currently -14F while I’m out walking the dog.

 

[EyeOnRivian]

Ah, not sure this should be posted in a public forum. From file page 7 / doc page 4 it states:

02.00.00 Confidential Information​

02.01.00 Statement of confidentiality​

And at the bottom right of just about every page in the document it states:

PROPRIETARY AND CONFIDENTIAL | DO NOT DISTRIBUTE |​

​

 

[Turbop11]

Charging seems a bit weak for such large batteries? I would have thought 250kW would have been a minimum. Many new models coming out with much stronger DC fast charging capabilities. For example new Hyundai Ioniq 5 has 350kW capability, this is low cost BEV with much smaller battery.

Also, living in Canada, I believe the heat pump is a huge missed opportunity for improved efficiency and range.

 

[RRappel]

Am curious why it doesn't have a heat pump? Given the engineering that went into the vehicle, I'm guessing the total amount of energy used to heat it would be a small percentage of the battery capacity so they didn't feel it was worth the effort (or cost), but that's just a guess.

 

[NY_Rob]

Am curious why it doesn't have a heat pump?

Adds $$ and complexity.

 

[Mattedfred]

Rivian R1T and R1S Lack Heat Pumps, Could Reduce Cold-Weather Range [Updated]

Heat pumps pre-condition batteries, improving their range in cold weather. But Rivian's electric truck and SUV apparently don't have them.

www.thedrive.com

 

[JimmyEV]

That's interesting about the R1S and R1T not coming with a heat pump because Rivian is hiring two different Thermal Engineer positions and in both job descriptions it says:

Research and develop estimation and physics based models for thermal management of the powertrain, battery, cabin HVAC, and heat pump, to deliver the best customer-experience in terms of performance, range, NVH, and cabin comfort.

Sr. Thermal Engineer - Energy Management Systems (Irvine)

United States, California, Irvine

boards.greenhouse.io

Sr. Thermal Engineer - Energy Management Systems (Palo Alto)

United States, California, Palo Alto

boards.greenhouse.io

 

[NY_Rob]

^ As I had mentioned earlier, just as Tesla did with the 2021 Model 3 refresh... early Rivian's would have resistive heat, then Rivian could easily add it on to later build vehicles. My daughter is fortunate enough to have a Model 3 with the heat pump.. zero issues so far. Keep in mind, Tesla started using the heat pump once they engineered the "Octovalve" device for the Model Y. Once that device was available, it was then incorporated into the Model 3 along with the heat pump.

 

[Divo]

Charging seems a bit weak for such large batteries? I would have thought 250kW would have been a minimum. Many new models coming out with much stronger DC fast charging capabilities. For example new Hyundai Ioniq 5 has 350kW capability, this is low cost BEV with much smaller battery.

Also, living in Canada, I believe the heat pump is a huge missed opportunity for improved efficiency and range.

I'm not so certain about that. From what I was reading on the Heat Pump offered in the Polestar 2, it sounds like the heat pump is maximally effective between -5 and 10C. Below -5, it doesn't seem to offer any benefit.

I'd love to hear from someone in Norway that has experience - but as a Canadian with a pre-order, I don't consider no heat pump a deal breaker, at all.

 

[JimmyEV]

Am curious why it doesn't have a heat pump? Given the engineering that went into the vehicle, I'm guessing the total amount of energy used to heat it would be a small percentage of the battery capacity so they didn't feel it was worth the effort (or cost), but that's just a guess.

Aside from money they probably think that pre-conditioning will be just a good as using a heat pump in cold weather.

 

[ColeAK]

I'm not so certain about that. From what I was reading on the Heat Pump offered in the Polestar 2, it sounds like the heat pump is maximally effective between -5 and 10C. Below -5, it doesn't seem to offer any benefit.

I'd love to hear from someone in Norway that has experience - but as a Canadian with a pre-order, I don't consider no heat pump a deal breaker, at all.

Everyone I know up here in AK with a Y are having issues this winter. We’ve only had a hand full of days above single digest (F) since late Oct. A guy I work with has one and says below ~10F it struggles and at -10F it’s useless.

Let’s face it for any of you that have an EV they never really get warm inside like an ICE. When it is below 0F my wife prefers to drive my LX570 (even though she hates driving it) to her 3 since even with resistance heat the 3 never feels warm inside.

heat pumps are efficient but do not work well in harsh cold. I think having an either or option would be great.

 

[PhilosopherProgrammer]

Everyone I know up here in AK with a Y are having issues this winter. We’ve only had a hand full of days above single digest (F) since late Oct. A guy I work with has one and says below ~10F it struggles and at -10F it’s useless.

Let’s face it for any of you that have an EV they never really get warm inside like an ICE. When it is below 0F my wife prefers to drive my LX570 (even though she hates driving it) to her 3 since even with resistance heat the 3 never feels warm inside.

heat pumps are efficient but do not work well in harsh cold. I think having an either or option would be great.

I guess when it's that cold, the heated seats don't do much?

 

[Victerry]

Makes me wonder about AC? How does the Aircon work? No compressor? Does anyone know?

 

[NY_Rob]

^ the compressor is run by an electric motor, turns on as needed.

 

[aajad]

Well, after reading this I’m glad I live in AZ.

 

[ColeAK]

I guess when it's that cold, the heated seats don't do much?

They do but seats do nothing to defrost/defog the windows. At below about -10F the Tesla’s (we had a 2014 S, now have a 2018 model 3) have a hard time keeping the inside of the windows unfrozen.

 

[E-One]

They do but seats do nothing to defrost/defog the windows. At below about -10F the Tesla’s (we had a 2014 S, now have a 2018 model 3) have a hard time keeping the inside of the windows unfrozen.

We have a 2017 X, every winter heat worked great, even while on the highway at 110km/h and -42 C
all glass stayed clear, 4 adults in vehicle.

 

[E-One]

We have a 2017 X, every winter heat worked great, even while on the highway at 110km/h and -42 C
all glass stayed clear, 4 adults in vehicle.

Make sure the air system is set to bring air from the outside and not recirculaying.