If you're experiencing hot air on the driver side vent and cold air on the passenger side vent this can be caused by a stuck blend door or failed blend door actuator motor. Clicking noise from the dashboard is usually caused by a failing blend door actuator. In addition, low freon/refrigerant can also cause this issue.
The heat exchanger uses coils to transfer heat from the ignited gas to the air. When cold air blows from a furnace the heat exchanger, furnace burner, or exhaust are likely the cause. This may be due to dirty components, broken parts, or the many safety mechanisms within the gas system.
Low refrigerant is the main reason for the extreme temperature difference between one side of the dash and the other due to the design of dual AC systems. Even experienced auto mechanics might be shocked to hear about such a significant difference.
If your heater is blowing cold air, this suggests that there is a problem with the heater core. This problem could be that the core is clogged or leaking.
If you experience the symptom of the AC blowing hot or cold air on one side but not the other and it's accompanied by a clicking or ticking sound from the dashboard, it probably means a gear in the temperature blend door actuator is faulty and the actuator needs to be replaced.
Dirty Air Filters
Eventually, the system won't be able to circulate air effectively, causing uneven cooling and warm spots where the colder air cannot reach. Dirty air filters can significantly reduce your air conditioner's efficiency and contribute to more mechanical breakdowns.
Your air conditioning system may produce uneven cooling in your home due to various faults. Issues with air ducts, HVAC equipment, and more can cause a central air system to fail at cooling a home evenly. Vents Are Blocked: Room vents distribute cold air from supply ducts.
Inadequate Insulation: Poor insulation in a specific room can result in heat loss, making it colder than the rest of the house. Check the insulation in the walls and ceiling of the affected room. Adding extra insulation or caulking gaps around windows and doors can help improve insulation.
One of the most obvious signs that your vehicle needs a Freon recharge is that your vehicle will be blowing warm air, even after your vehicle has been running for some time. If your refrigerant gets too low, there will simply not be enough “coolant” to cool the air as it is passed through your evaporator coil.
If you're experiencing hot air on the driver side vent and cold air on the passenger side vent this can be caused by a stuck blend door or failed blend door actuator motor. Clicking noise from the dashboard is usually caused by a failing blend door actuator. In addition, low freon/refrigerant can also cause this issue.
Malfunction of a temperature door.
Vehicles that have drivers and passenger climate controls have two sets of electric motors and doors. If one of the doors is not working it is possible that it could cause heat to come out of one side and a/c to come out of the other.
In AC systems, the air conditioner reset button is on the outside unit's lower edge, typically close to the ground. Some models have the reset button located behind the service panel, which may require tools to remove. Reset buttons are usually red or yellow with a clear “reset” label.
You can generally identify a blocked air duct by a distinct drop in heating and cooling efficiency, increased energy costs, and occasionally a musty, dusty smell throughout the home. The blockage usually comes over time, by a buildup of dust and debris that just accumulates until it begins choking the system.
You will need tools like 50/50 pre-mixed coolant, an air compressor, and a cooling system vacuum fill tool. A heater core back-flush requires you to prepare the vehicle, perform the back-flushing process, and refill the cooling system. Prepare to pay between $100 and $250 for a professional heater core flush.
Inadequate insulation can drastically affect your home's temperature balance. Improperly installed or deteriorating insulation in your walls, attic, roof, or ceiling can create drafty areas that can't be adequately heated or cooled. Improperly insulated doors and windows can also cause uneven temperatures.
Check the Vents
When one room in your house isn't cooling, the first thing to check is the AC registers, or vents, in that particular room. The simplest reason that you have uneven home cooling is just that there's something blocking the vent or that you have one or more closed vents.
BLOCKED VENTS
If they're blocked with dirt or debris that accumulates over time, the cool airflow will be reduced, keeping the room warmer than others in your home. Your vents should be cleaned regularly and can even be cleaned by you without hiring a professional.
Obstructed Vent
Furniture, bedding, and the vent damper could all be possible obstacles to the vent. If you find any closed or blocked vents, you can clear away the obstruction and feel for airflow, but if your vents are open and still not blowing enough air, there could be an issue with the fan's motor.
How much does it cost to have your HVAC system balanced? Getting an air balance in HVAC systems, with no significant issues or modifications, can range from about $200 to $500. This typically includes airflow measurements, adjusting dampers, and ensuring proper temperature distribution.