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Heater response time

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Old Jan 9, 2019 | 03:42 PM
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Heater response time

How long does the 6.7L engine have to be running before the heater throws out some real heat? Never owned a diesel engine vehicle before so that's why I'm asking.
 
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Old Jan 9, 2019 | 03:46 PM
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Depends on how cold it is and how you drive it.

Letting it idle when its zero outside and it will likely never make heat.

When temps are in the low 20s, with only a minute of idle time before leaving my driveway, it will take me about 10 minutes before I notice any heat.
 
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Old Jan 9, 2019 | 03:46 PM
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Depends on how cold it is out, if you had your block heater plugged in, how quickly you start driving, etc.

i use the remote start to get it warmed up a bit before i get in

 
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Old Jan 9, 2019 | 03:55 PM
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And, of course, depends on if you have the supplemental heat option. Whereas it won't give you hot air, it does help while waiting for the engine to warm up.
 
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Old Jan 9, 2019 | 04:03 PM
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Watch your oil temperatures...once it gets near 100 degrees the truck will begin to blow warm heat...hotter air comes closer to 135 degrees.
 
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Old Jan 9, 2019 | 04:54 PM
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My 6.2 gasser heats up really quick. A lot quicker than the old 2003 f150 used to. We are talking like within a 1/2 mile the water temp gauge needle is moving up and i'm starting to feel heat. I leave work at 0 dark thirty and have a 20 mile drive home from work. By the time I get home, the heater is on the lowest fan setting and have the thermostat barely on the heat side.
 
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Old Jan 9, 2019 | 05:06 PM
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Originally Posted by ArtsBest
How long does the 6.7L engine have to be running before the heater throws out some real heat? Never owned a diesel engine vehicle before so that's why I'm asking.
In any scenario it is 2 to 3 times longer than a gas motor. There is a very good reason why a supplemental heater is available.
 
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Old Jan 9, 2019 | 06:08 PM
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Originally Posted by Dockmaster1
And, of course, depends on if you have the supplemental heat option. Whereas it won't give you hot air, it does help while waiting for the engine to warm up.
This ^^ if you have the supplement heater its fast - minute or so max on mine.
 
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Old Jan 9, 2019 | 06:51 PM
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Diesel engines tend to take a while to get warm .
 
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Old Jan 9, 2019 | 07:03 PM
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My current truck doesn't have the supplemental heater, but most of my other trucks in the past did. There is no mistaking that it is a great option in the winter.
 
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Old Jan 9, 2019 | 07:13 PM
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Originally Posted by zeroo
My current truck doesn't have the supplemental heater, but most of my other trucks in the past did. There is no mistaking that it is a great option in the winter.
I don’t know why the Rapid Supplemental Heater isn’t just included on all the diesel trucks. Being in Phoenix, and since my salesman isn’t know anything about it, I omitted it on my original order. The next week, I was doing some research and I learned it’s a fairly important option if your winter temps are in the 30’s or below.

I was was able to add it to my build, and I told my salesman that he should encourage it in the future. If I spent $70K for a truck and shivered for 30 minutes while driving, I wouldn’t be real happy.
 
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Old Jan 9, 2019 | 08:07 PM
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I have the supplemental heater and it melts snow and ice fast, its great. In the fall I never experienced a fogged up windshield, it was like magic.

As for heat - who needs it with the heated steering wheel and seats I never really notice air blowing around with the climate set to auto, it just gets warm. It's cool.
 
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Old Jan 9, 2019 | 08:24 PM
  #13  
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my supplemental heater just knocks the chill off. it doesn't heat the cab up that much.
 
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Old Jan 9, 2019 | 10:09 PM
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Wear gloves and you'll be surprised how much warmer you'll be. The heated steering wheel is a good option to replace gloves though.
 
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Old Jan 9, 2019 | 10:33 PM
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Diesels take awhile to warm up even around here where it rarely gets below 40.

I haven’t had a 6.7 yet but couldn’t find one with rapid heat so I ordered one (waiting now).

One of the downsides of a diesel. I use to live on the beach and have a short commute and when it was in the 40s with windy humid air it was quite uncomfortable getting from my house to the office.

I remember in my cummins sitting and idling a swearing it was getting colder in the cab. Then it would kick into high idle. Would have to be pretty dang cold for that.
 
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