✅ 2025 Overview: BYD Air Conditioning and Its Impact on Range
BYD 2025 models (including Act 3 , Seal U, Dolphin and Seal) adopt heat pump to improve thermal efficiency in winter.
Pulsar Max Wallbox – 7.4 kW EV Charger
Electric vehicle charger with Type 2 connector and 5 m cable. Supports Wi-Fi, Bluetooth, and OCPP. Easy installation, indoors or outdoors, up to 7.4 kW.
🛒 Buy now on AmazonPlus: Reduces battery consumption compared to traditional resistors. Limitations: Reduced efficiency below -5°C, sensors and software logic still requiring improvement. Result: Winter range can drop by 15% to 30% depending on outside temperature and driving style.
- Act 3: Decent air conditioning, but range drops by up to 20% in winter.
- Seal U: more exposed to marked drops (up to 30%) with heating on.
- Dolphin/Seal: Newer software, improved thermal management but still buggy over the air.
🔧 Common BYD EV Air Conditioning Problems (2025 Update)
This section summarizes the most commonly reported air conditioning and heat pump issues in BYD EV models.
1) Heat pump inefficient below -5°C
- Typical symptoms: warm air, battery life dropping by more than 25% in harsh winters.
- Causes: poor compressor efficiency, physical limits of the thermodynamic cycle.
- Solutions: use of pre-conditioning from the BYD app, parking in a garage, activation of heated seats and steering wheel (less energy-consuming).
2) Inaccurate cabin/battery temperature sensors
- Typical symptoms: swings between excessively hot and cold air, frequent fan activation.
- Causes: Suboptimal software calibration, internal sensor errors.
- Solutions: Software update at the dealership, sensor replacement (range €80–180 + labor).
3) Climate control software bug (OTA broken)
- Symptoms: Air conditioner not starting at first startup, app showing incorrect settings.
- Cause: Incomplete or not installed OTA updates.
- Solutions: Repeat update with stable network, hard reset infotainment, in extreme cases reload firmware in the workshop.
💶 Indicative costs for BYD air conditioning
| Intervention | Symptom | Range €* |
|---|---|---|
| Cabin temperature sensor replacement | Unstable climate, inconsistent air | 80 – 180 |
| Climate software/firmware reload | OTA bug, climate not bootable | 100 – 250 |
| Heat pump check/reset | Warm air, reduced autonomy | 200 – 400 |
*Ranges are indicative and vary by model, year and local labor.
🧭 Practical usage/maintenance tips
- Pre-condition the car connected to the charging station to reduce battery consumption.
- Use heated seats and steering wheel instead of high-intensity air conditioning.
- Check OTA periodically: some fixes improve thermal efficiency.
- In areas with harsh winters, consider battery heating packages (Seal U/Dolphin).
❓ Frequently Asked Questions
How much does BYD's range decrease in winter?
Between 15% and 30%, depending on temperature, climate use and model (Seal U is more sensitive).
Does the heat pump work below -10°C?
No, efficiency drops dramatically. In those cases, traditional, more energy-intensive heating elements come into play.
Should I always turn on pre-conditioning?
Yes, if connected to a charging station/wallbox: it reduces battery consumption and improves initial comfort.
🏁 Conclusions
The BYD 2025 EV air conditioning is effective but not without limitations. Knowing its weak points (low-temperature heat pump, sensors, and software bugs) allows you to prevent inconveniences and limit winter range losses.
Not sure about your BYD model? Contact us: we'll help you find compatible updates and spare parts.
