no heat from the floor vents

According to the digital dashboard heat is being vented to the floor, but that is not the case, Winter is coming and now is the time to resolve this issue. Heat is blowing from the dashboard and windshield vents. I am not sure if is a fuse or the blower or what. Thank you for your assistance.

My car has 200000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
It seems as if your mode door actuator has failed. The mode door actuator is responsible for moving the mode door. The mode door is responsible for blocking off air flow/ allowing air flow to certain areas of the vehicle. The mode door actuator failure can cause some or all of the functions of your climate control not to work. I would recommend having the mode door actuator tested using the manufacturers recommended procedure to determine if it has failed. If the mode door actuator is faulty, I would recommend replacing it in order to resolve this issue.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The most common reasons a Honda Accord heater isn`t working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
There are a number of reasons why your car heater could be blowing cold air: Broken thermostat. Car heater core issues. Low coolant levels.
To reset a malfunctioning Honda Accord climate control system, turn on accessory mode, then hold the defrost and OFF buttons on your climate control unit until the light has blinked five times.
Changing the fuse can solve the problem, or it can simply be a blown a fuse. There is no difficulty in replacing it. If it works intermittently, there may be a problem with your air/heat. When the blower motor operates in one mode and does not in another mode, then you may need to replace the blower motor resistor.
Here are some of the most common causes of why air doesn`t flow out of your vehicle`s vents: Your air intake is clogged, meaning that air isn`t getting in from the outside at all or isn`t circulating properly. There is a blown fuse in the ventilation system. Electrical issues such as a bad relay.
If there isn`t enough coolant in your system, the heater core will blow cold air into your car. Solution: If you confirm that a low coolant level is the source of your problem, you simply need to top off your coolant. You may want to check for leaks as well if you just recently refilled your coolant.
The lukewarm air appearing in your heater can be the outcome of a leaky duct. If your air ducts are leaking, cool outside air is making its way into your ductwork. This can cause the air to really feel only lukewarm. The repair: Duct sealing.
An electric heater that blows cold air could be caused by one or more of the following reasons: The manual reset has tripped. The fan switch is “on” and the thermostat setting is below the actual temperature. The fan is dispersing this air after shutdown.
Common signs include inconsistent cooling, out-of-date software, and uneven air distribution, since the module controls the whole AC system.
The most common problems that cause a lack of airflow include frozen coils, broken fan and restricted airflow due to dirty air filters or vent obstruction. However, there are many other issues that can lead to minimal airflow, so it may be necessary to ask the professionals.
The blower motor is responsible for sending air through the vents of your car. Over time, blower motors can become damaged, or completely fail. In which case, air will no longer come out of your vents.
If you think the cause for your car heating not working is related to the blower fuse, be sure to replace it with one of the same amperage. The fuse may have blown due to age, or it may suggest an underlying problem. If the replacement fuse (of the same amperage) does not blow, you may well have identified the problem.
One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power may be cut off from the blower motor circuit causing the motor to no longer function.
Across almost all models of cars and trucks, the number one cause for a vehicle`s heater to stop working is a faulty or broken thermostat.
A faulty or broken thermostat is the most common cause of your car`s failing heat. Stuck open or stuck closed, the part can not only cause issues with your heat but also with your engine`s cooling system.
When you turn the furnace on but no heat comes out, there may be an obstruction. Dirty air filters restrict airflow, which can make it feel like not much heated air is coming out of your vents. Check the furnace filter and replace it if its surface is covered with contaminants.
One of the most common causes of a heater blowing cold air is a clogged filter. However, even if you replace the air filter with a new one, dirt and other particles can still be present inside the system. This could lead to overheating in the long run.
Blocked or excessively dirty filters can be the root cause of some of the most common furnace problems in cold weather. Blocked filters impede the free flow of air and therefore your furnace has to work a lot harder.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

A/C and heat are not working properly. Car blows heat in summer and cool air in winter.
ANSWER : Common causes of no cabin heat include malfunctioning blend door(s) (part of the in-dash ventilation network), a faulty or stuck heater control valve, a plugged heater core, stuck open engine cooling thermostat, collapsed hoses, and low coolant level. The cost to resolve the problem depends on which of the foregoing faults is the cause. If you desire a diagnostic to determine exactly why there is no cabin heat, please request a non functioning cabin heater diagnostic and the responding mechanic will come right to your location and get this resolved for you promptly.

With regard to your air conditioning system, if merely re-charging the system restored normal operation but the a/c ceased to function after a month or so, that scenario typically suggests a leak. Some leaks are really cheap to repair, like if a couple o-rings need to be replaced in system piping but if the leak is at the compressor shaft seal, that repair is more costly. It is not expensive to find the leak and diagnose the system and once the leak is found the mechanic can let you know of the exact cost to repair the leak and re-charge the system. If you desire that service please request an a/c system diagnostic – suspected refrigerant leak and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you

Read Full Q/A … : no heat from the floor vents

no heat from the floor vents
ANSWER : It seems as if your mode door actuator has failed. The mode door actuator is responsible for moving the mode door. The mode door is responsible for blocking off air flow/ allowing air flow to certain areas of the vehicle. The mode door actuator failure can cause some or all of the functions of your climate control not to work. I would recommend having the mode door actuator tested using the manufacturers recommended procedure to determine if it has failed. If the mode door actuator is faulty, I would recommend replacing it in order to resolve this issue.

Read Full Q/A … : no heat from the floor vents

Heat blows hot from dash vents but cold from floor/feet vents?
ANSWER : Hi there. This issue is commonly caused by a malfunction with the vent selection switch. In some cases, a fuse or electrical relay becomes damaged which essentially blocks the heater vents from opening and closing correctly. However, it could also be caused by a mechanical component failure in the vent system itself. To diagnose this problem correctly, a professional mechanic should complete a heater is not working properly inspection at your location.

Read Full Q/A … : no heat from the floor vents

My car is over heating. There’s no leaks and I have no hot hair comeing throu the heating vents and blower motor is working.
ANSWER : Hi there. Actually, if you have no heat coming out of your vents, the issue is most likely caused by an obstruction inside the heater core. Your heater receives it’s "HEAT" from recycled coolant that is first heated inside your motor. It circulates through the heater core and then blows the hot air into your cars cabin. When the heater is not working, it’s usually due to the heater core being damaged or clogged with debris. I would recommend having a professional mobile mechanic complete a car is overheating inspection.

Read Full Q/A … : no heat from the floor vents

My car stopped blowing heat and air out of the vents and on the floor.
ANSWER : This may be related to a faulty blower motor or blower motor relay. Occasionally, the blower motor itself will wear out or become faulty working intermittently as the brush contacts inside the motor wear out. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. I would suggest having an expert from YourMechanic come to your location to diagnose your vehicle’s blower motor system.

Read Full Q/A … : no heat from the floor vents

Heat inside car stays warm for minute then blows cold until I turn heat off for a minute and try again.
ANSWER : Hi there. The engine always at operating temperature leads me to believe, the thermostat is not the cause, for no heat inside the vehicle. There are several possibilities for no heat inside, the heater control valve is malfunctioning, the heater core is restricted, the temperature blend door actuator is malfunctioning. Replacing components without diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle’s inoperative heater be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Read Full Q/A … : no heat from the floor vents

My heat blows out of the passenger vents but blows cold air out of driver vent…what is the issue???
ANSWER : Hey there. The temperature blend door on the left side is not switching from cold to warm. The temperature actuator needs to be replaced and the linkage checked. Have a local expert inspect the cooling system to verify these issues and move forward with the proper repairs.

Read Full Q/A … : no heat from the floor vents

No heat from vents floor defrost
ANSWER : The first thing to check is to see if both heater hoses are getting hot and staying hot. Then from inside temperature controls check to see if the inside air temperature can be adjusted up and down. If temperature stays the same with no change then you most likely have a temperature blend door actuator that is not controlling the blend door. If the actuator does not move then remove and replace with a new actuator and re-calibrate the new actuator.

Read Full Q/A … : no heat from the floor vents