BKY2003
Posts: 4
Joined: Thu Aug 15, 2019 6:34 am
Delivery Date: 01 Aug 2019
Leaf Number: 309571

Question about Air conditioner

Thu Aug 15, 2019 6:56 am

I'm new to leaf (15 days). I searched air conditioner post but could not find anything. I was noticing that my new 2018, 40 kwh leaf uses alot of power for the air conditioner. Has anyone tried setting up an alternative AC? Maybe like Used Leaf batteries and a car 12v Ac. And charge these separately .

Levenkay
Gold Member
Posts: 524
Joined: Mon Sep 26, 2011 10:01 pm
Delivery Date: 11 Aug 2018
Leaf Number: 308382
Location: Portland, OR

Re: Question about Air conditioner

Thu Aug 15, 2019 10:30 am

What are you calling "alot of power"? I understand that configuring the LEAF's heat pump to allow cabin heating sacrificed a smidgen of efficiency relative to the earlier "cabin cooling only" setups, but it still seems pretty effective to me. For darn sure, you're not going to outdo it with any 12V-powered after-market add-on; I believe the compressor in the LEAF's system runs from the high-voltage traction battery. How are you determining your LEAF's HVAC power consumption?

BKY2003
Posts: 4
Joined: Thu Aug 15, 2019 6:34 am
Delivery Date: 01 Aug 2019
Leaf Number: 309571

Re: Question about Air conditioner

Thu Aug 15, 2019 11:02 am

On my 2018 leaf I press the leaf power consumption display button. Sometimes my AC will show 3.5 KW for AC and after a while it will go down to 1 KW. But I do live in Florida. I was comparing it to a 5000btu AC I have, and it uses 500watts on high.

Is the leaf AC cooling the battery pack? Thanks for your reply.

BKY2003
Posts: 4
Joined: Thu Aug 15, 2019 6:34 am
Delivery Date: 01 Aug 2019
Leaf Number: 309571

Re: Question about Air conditioner

Thu Aug 15, 2019 1:01 pm

Just drove 21miles, First 9 miles it said over 3.5 kw then dropped to 1.5 kw the rest of the trip. 93 degrees out side, set the AC to 80 degrees.

User avatar
Nubo
Posts: 5703
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Question about Air conditioner

Thu Aug 15, 2019 3:10 pm

BKY2003 wrote:
Thu Aug 15, 2019 11:02 am
... Sometimes my AC will show 3.5 KW for AC and after a while it will go down to 1 KW. But I do live in Florida. I was comparing it to a 5000btu AC I have, and it uses 500watts on high.
The LEAF's AC is probably double to triple the BTU capacity of your window unit. Cars need to cool down quickly and also have to contend with a huge solar loading.
I noticed you're still working with polymers.

baustin
Posts: 711
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: Question about Air conditioner

Sun Sep 08, 2019 7:04 pm

BKY2003 wrote:
Thu Aug 15, 2019 11:02 am
On my 2018 leaf I press the leaf power consumption display button. Sometimes my AC will show 3.5 KW for AC and after a while it will go down to 1 KW. But I do live in Florida. I was comparing it to a 5000btu AC I have, and it uses 500watts on high.

Is the leaf AC cooling the battery pack? Thanks for your reply.
That's normal consumption for the Leaf AC. I run mine at 70 degrees. I prefer comfort over maximum range, but the loss from running the AC is not that great. Don't worry about it and just enjoy the car. If you are suffering massive range loss, you have defective components that need checked by the dealer.
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

DougWantsALeaf
Posts: 1832
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Question about Air conditioner

Sun Sep 08, 2019 7:40 pm

To minimize power usage, I will cool the cabin while plugged in at full fan, then set thermostat to 77-79F (in summer) and put on auto (let's say when it is 85-90 outside). This causes the fan to run at low (most of the time) and run primarily a dehumidifying function, which keeps the cabin pleasant, but with very little draw. (maybe costs you 2-3 miles per hour of driving).
2019 S Plus (98.6% SOH) & 2019 SV Plus (94.6% SOH) Both Silver
2013 Leaf SV sold 2019
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV Leaf: 242 Highway 4.5 miles/kWh

GerryAZ
Gold Member
Posts: 2536
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Question about Air conditioner

Tue Sep 10, 2019 4:54 am

The LEAF's air conditioner is quite efficient (it is actually similar to variable-speed hermetically-sealed high-efficiency heat pumps used in houses except it runs on 360-400 volts DC instead of 240 volts AC. It has at least 10 times the cooling capacity of the little window unit mentioned in the original post so it can draw up to 5 kW at high ambient temperatures until the interior cools down (which is why it cools fast). Power consumption is minimal once the interior is initially cooled.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019

powersurge
Posts: 1742
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Question about Air conditioner

Tue Sep 10, 2019 6:34 am

To a New Leaf User, I would say, that since all functions on the car run off of the battery, you will need to change your behavior somewhat...

Compared to a Gas Car. With 5 years of experience, I have found that the best efficiency on the Leaf is to run both the A/C and heat at 68 or so degrees, with the recirculation ON, and with the fan at 1 bar (lowest) speed.

When having driven gas powered cars, we are used to cranking up the heat and ac full blast, at highest fan.... Because it is free. On the Leaf, nothing is free.

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