Heater doesn’t get hot

So we got the fan blowers fixed once we realized it wasn't heating good. They've been replaced and it blows hard but still the heater doesn't seem to get as hot as it should. I can barely feel heat when I put my hand over the fan. What could be the problem?
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
If your heater is not producing the correct amount of heat or any heat at all, the first thing I would recommend checking would be the coolant level. The vehicles heater relies on the coolant getting hot to produce heat. If the coolant level is low, the vehicle will not be able to heat up any coolant and therefore will produce no heat. When the coolant level goes low, this usually means that a leak exists. Common leak sources include the water pump, radiator, and coolant hoses. I would recommend a [cooling system pressure test]https://www.yourmechanic.com/services/pressure-test-radiator-cap) to determine the leak source. Consider YourMechanic, as a certified technician can come to your home or office to inspect your cooling system for you.

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 Ford Explorer 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. Oops!
Damaged CV joint: The most common cause of a clicking or popping sound from the wheels is a broken CV joint. The CV joints, which stand for Constant Velocity, are essentially the wrists of your vehicle`s steering system.
The most common reasons a Ford Explorer engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
The most common reasons a Ford Explorer is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.)
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.
Clean Filters

One of the most common issues with a heating system not functioning is dirty air filters. If your air filters are extremely dirty, then the airflow can be blocked. Check for clean air filters, vents, and registers. Make sure there are no rugs or furniture blocking vents or registers as well.

Heater. If you`re hearing a heater clicking noise in the car or clicking noise coming from deep within your dash, the problem is likely the blend door actuator. The actuators are either not positioned correctly, the gear may be stripped, or the actuator may be broken.
Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.
Bad Tie Rods: Tie rods connect a vehicle`s steering rack to the steering arm. This helps translate the turning of the steering wheel to the direction of the tires. When a tie rod end is worn or loose, they may produce a clunking noise.
Every time it cycles on it creates more strain on the engine, generating heat. In addition, the engine`s serpentine belt drives the AC compressor, which also takes more energy from the engine. So yes, running your air conditioner during hot weather will cause the engine to run hotter.
Recommended Services. Automotive air conditioning (AC) will cause the engine to run hotter in the summer because it creates more heat in the engine compartment and there will be more strain on the engine to operate the AC compressor.
The air conditioner can cause an engine to overheat quickly because it makes the engine work harder. Even though it`s hot outside, if you turn off the AC, you may be able to avoid overheating, especially if you take the next step, which we apologize for in advance.
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.
A Dirty or Bad Air Filter May Be the Culprit

Here are some of the most common issues that you should check with your air filters when troubleshooting lukewarm air blowing from your furnace: Check if your filter is dirty. Simply remove the air filter and replace the filter if it is clogged.

If your heat only works when driving, this can also be caused by air pockets. Air pockets within the cooling system can prevent adequate coolant circulation and are sometimes the result of low coolant or a faulty radiator cap.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Overheating issue, when heater is on its normal temp. but if heater is off it begins to overheats, until heater is turn on again.
ANSWER : It sounds like your engine might have a restriction in the cooling system. If the cooling system has a restriction that prevents its flow, this will cause the engine to get hot. The heat is dissipated from the cooling system by means of the radiator.

When a restriction exists sometimes the radiator alone is not enough. The heater core is like a small radiator inside the dash and is also another means of dissipating the heat from the cooling system. So essentially when the heat is on you are introducing a second radiator into the system which will help to cool the engine down.

In order to get this fixed, consider YourMechanic, as one of our mobile technicians can come to your home or office to diagnose the overheating issue firsthand and help you make the necessary repairs.

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97 Firebird engine getting too hot.
ANSWER : The main two reasons that a vehicle will overheat at low speeds but remain cool at high speeds are a clogged radiator or an inoperative cooling fan. I would first recommend driving your vehicle a short distance to get it to operating temperature. Then, stop the vehicle, open the hood, and check to see if the radiator fan is working. If the fan is not working, this is the cause of your problem. The radiator fan’s job is to keep air flow through the radiator when the vehicle is moving at slower speeds. The radiator being cloggeed by contaminants can also prevent air flow through the radiator. I would recommend having your radiator checked for hot spots using an infared thermometer if your fan is working to determine if it is clogged. Consider YourMechanic as a certified professional can come to your home or office to inspect your cooling system for you.

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Rear wheel getting hot after caliper and hose replacement
ANSWER : There are a few reasons that a caliper piston might fail to retract and there is also the possibility that the heat is being generated by a failing wheel bearing. If the issue is brake related, pressure in the line might be failing to release (due to a line fault such as a blockage), the pads might be stuck or binding in the torque plate and there could be problems with the sliding pins in the torque plate. Also, you’ll want to check for a parking brake assembly that is failing to retract at that wheel position. To obtain a quick resolution of this, you can request a brake inspection and a certified mechanic will come right to your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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95 3000gt gets hot while accelerating but not during idle. Also doesn’t reach the red line, but stays a notch or two below.
ANSWER : There is inadequate coolant flow or, less likely, a leak at the head gasket. Remote possibilities include dragging brakes, under inflated tires, and transmission faults. Inadequate coolant flow can be due to a low coolant level, a faulty thermostat, a plugged radiator, a faulty radiator pressure cap, collapsed hoses, non functioning cooling fans, and a faulty water pump or drive belt. Certain engine faults, such as a leaking head gasket or poor engine running condition can also cause overheating. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine overheating diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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Is it normal for the brakes to get hot or smell hot after the pads and rotors are changed on the rear brakes?
ANSWER : Hi, thanks for writing in. I’d be happy to provide my insight.

From the description of your 2010 Pontiac G6 braking issue, there are a few likely causes. If the piston in the caliper did not move freely than this will allow the brake pad to drag on the rotor. When the pad drags it can overheat the rear brakes and cause them to fail. The caliper will need to be inspected before the vehicle is driven more.

If you would like help getting these inspected, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose these brake problems for you, and make or suggest any repairs as needed.

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car overheating and heater blowing cold air plus hose to heater core not getting hot
ANSWER : If you replaced all those parts and it still is overheating then you have a radiator that is clogged and/or the fan is not working. You need to see if the upper and lower hose is hot when the vehicle heats up. If this is the case then replace the radiator and check the fan operation to make sure it is working.

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My heater blows a lot of air it just doesn’t get very hot
ANSWER : Hello there, a few common faults will cause your vehicle to have air that is not very hot. Without knowing the year, make and model of the vehicle I can only provide a broad answer. The most likely faults are air in the cooling system, a failing heater core, coolant leaks, or the thermostat. A qualified technician, such as one from YourMechanic, will be able to diagnose your heating and make any repairs required to resolve the issue.

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My heater blows out warm air instead of hot air when my temperature dial is turned as hot as it can go.
ANSWER : Hello there, warm air coming from the vents on your 2001 Ford Taurus will be caused by a variety of issues. The heating system for your vehicle and the air conditioning system are completely separate and likely unrelated. A low coolant level in your vehicle will cause the heat to be unable to function properly and is the most likely culprit for the air being warm and not hot.

If the coolant is very low it likely means a leak is present in the vehicle. A few common leaks spots are the water pump, thermostat housing, radiator, radiator hoses, heater hose, or the heater core itself.

If you’d like to get this resolved, a qualified technician such as one from YourMechanic will be able to diagnose your heating issues and make any repairs required to restore proper operation.

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