Here’s how your car’s heater is supposed to work:
- Get into your car, turn on the ignition, and adjust the heating controls.
- Wait patiently as cold air flows into your cabin, knowing that warm air will arrive soon.
- Arrive at your destination comfortably.
But sometimes, the process stalls at Step 2. A malfunction in your vehicle’s HVAC system or a disruption in coolant flow from the engine radiator can leave you shivering. When that happens, bundle up and head to Monty’s Automotive.
Our experienced technicians take the time to thoroughly explain why your heater isn’t working and discuss the best options that fit your budget. We’ll provide a written estimate before proceeding with any repairs. Request an appointment today!
why is my car blowing cold air when the heat is on?
It’s normal for cold air to blow from your heater in the first few minutes of operation. However, if the air doesn’t warm up soon after, there may be an issue with your heater or coolant system. Since your vehicle’s heater relies on coolant (a mix of water and antifreeze) from the engine radiator, a shortage of coolant will prioritize your engine over the heater. Another potential cause could be a failing water pump, which prevents coolant from properly circulating back to the radiator, resulting in insufficient coolant for your heating system.
If you’re experiencing these issues, Monty’s Automotive can help diagnose and fix the problem!
Related:
Radiator Flush
Radiator Leak
WHAT CAUSES THE HEATER TO STOP WORKING IN MY CAR?
Here are some common reasons your car’s heater might not be working properly:
- Low coolant: Since your heater shares coolant with the engine radiator, a radiator leak or faulty water pump can cause the heater core to be deprived of coolant.
- Bad heater core: Leaks, holes, or blocked coolant hoses can disrupt your heater core’s function.
- Faulty blower motor: If the blower motor fails, warm air won’t reach your cabin.
- Malfunctioning HVAC controls and valves: These small components can break or get stuck over time, preventing proper heating.
- Broken or stuck thermostat: Even if your heater and coolant are in good shape, a malfunctioning thermostat can prevent the system from activating.
Monty’s Automotive can diagnose these issues and get your heater running efficiently again!
SIGNS OF A BAD HEATER CORE
The heater core is a small, radiator-like component located behind your dashboard vents. It heats the air in your cabin by circulating coolant through the core, transferring warmth to the air blown through your vents. Here are common signs that your heater core might need service:
- Blowing cold air: A damaged heater core can prevent heat from transferring properly, leaving your cabin cold.
- Foggy windows: A bad heater core can cool the air inside the cabin, causing condensation to form on your windows once your car warms up.
- Unusual smells: A leaking heater core often produces a sweet or bitter smell from coolant inside or outside your vehicle.
- Low coolant levels: A coolant leak in the heater core or radiator can cause coolant levels to drop, potentially leading to engine overheating.
- Vehicle overheating: A clogged heater core can overheat your engine, possibly leaving you stranded.
Monty’s Automotive can diagnose and repair these issues, ensuring your heater and engine stay in good working order!
Related:
What to do if my car overheats