Is this a recent concern or something that has been going on every since you've owned your 2019?

 

Simple diagnostics you can do.

Have you tried looking in the engine compartment to see if anything, such as hoses/pipes going into your cabin, vibrates at the same time?

Have you checked behind your glove box? When the glove box is open/removed as when you are changing your cabin filter, have you looked up into the area behind the console?

Have you removed your cabin filter to check inside?

 

I have not checked any of those. It is more of a cabin vibration. Like a driveshaft vibration but it has to do with the heater being on

Sounds like the A/C is cycling. Do you have the car in ECON mode?

Nope I never use Econ

 

Sounds like the A/C is cycling. Do you have the car in ECON mode?

 

As much as I love Honda and a fan, and having owned 7 or 8 and probably more in the future, I’m not sure if they use harder engine mounts or to do with how they manage fuel at idle, but depending on the load I have never found them particularly smooth at idle. Though oddly sometimes they are…What’s more is you might think ok warm up after start, sure revs higher or when accessories are on AC lights etc but it seems like sometimes what appears to be the same RPM one day is smooth and another day not. And this has been all of them perhaps other than my SiR Accord Wagon I had for a while.

Not sure how severe your vibration is but good luck finding it.

 

Interesting....mine is so smooth at idle even when first starting on a cold morning at high idle it's ultra-smooth...easily the smoothest inline4 that I've owned...

 

That's very odd. My 2022 is extremely smooth at idle while my 2013 vibrates quite a bit.

 

Maybe I’ll take a video at some point. Maybe I’m just being too sensitive ;-) additionally don’t have much to compare to, apart from in-laws Merc and a Toyota Harrier I rented over winter before I had the V. Wonder how OP is going?

 

Stop by a dealer and sit in another new one and compare how it idles, then you'll know.

 

My two cents worth, ...
Since the vibration condition only happens with the heat on,
would think the OP means the heater fan or HVAC fan.
If the fan motor or shaft is faulty then it can cause intermittent vibration
Shutting it off would stop the vibration all together.