I am having huge problems getting my to keep me warm in this cold weather. As a matter of fact, my hands and feet are suffering the most. How do I get my heater to work like it's supposed to??

 

Have you changed the coolant at some point and not bled the system correctly? If you have air in the system it can prevent your heater from working correctly.
Also, have you ever worked under the dash (glovebox area) and not connected (or not correctly connected) the cable that connects the rotary heat control knob so that it pull the heat lever correctly?

 

I just bought the car in August. So I haven't messed with any of the fluids besides changing the oil.
As far as the work under the dash goes, I did have the iPod adapter installed since it is an 08 base model.

 

You may just be low on coolant mixture.. Are you getting strong airflow from the vents? . If your cold engine light is staying on for over 3/4 of a mile after a cold start, you could have a stuck thermostat but you should still be able to feel warm air by the time you've driven over a mile or 2 no colder than it is right now.

 

How do I check my thermostat to see if it's stuck? And yes the airflow from my vents is pretty strong, but the drive from my job to my house is about 20 min, and it still blows cold air.

 

If your air is actually cold, then try the above, good advice.

If it's warm and just not as hot as you'd like, think on the following. In cold weather it never really gets "hot" ie painfully hot to put your hand in front of like some cars; it could be because the thermal mass of the engine is small, I'm not sure. But it certainly ought to be decently warm, enough to warm the interior over time. Also, if you are letting in exterior air, don't expect it to get from 20 degrees up to 70 before it goes into the cabin

Try starting your car and running it for 10 mins, on recirc. If the car is not any warmer when you get back in, then it's not just your perception

 

I'd like to chime in and say that I also bought a GD Fit sport last week and it had very low coolant. I had my mechanic flush the remainder and fill up with Honda type 2 and now the heater's performance is much improved. I live in Montreal, Canada and although it's not snowing yet, it's pretty cold and after 5 minutes, my Fit heats up to the point where I actually have to turn the temperature down.

The coolant flush created a noticeable improvement. My mechanic recommends flushing every 2 years which I think is overkill but I didn't know whether the previous owner EVER had a flush done so to be safe, I went ahead and did it knowing I'll be good for at least a few years.

 

You can get a good idea of whether the thermostat is stuck in the open position by removing the radiator cap before starting the engine while it is cold... If you can immediately notice that the coolant is moving the thermostat needs to be replaced... MTlian's advice should be followed also.... By doing both you should be toasty warm in a mile or so.

 

I have to backtrack on something I said earlier; my Fit's hot air got pretty hot. Not, I will admit, painfully so - but definitely hot and not just warm.

 

I have to say my 2013 at the lowest fan speed and not set to the highest temp is too warm for me but it has only been down to 45-50 around here so not too cold.

 

If the temperature is "Hot," then perhaps your "Cabin Filter" is clogged, and not giving you the airflow that you should be getting. That filter is relatively inexpensive, and easy to replace.

 

According to the schedule on the owner's manual a two-year coolant/antifreeze flush is a little too frequent, but hey - if it helped your heater woes then I can't argue with the results