We often receive calls about heating systems blowing cold air. This may seem like a problem when the Phoenix lows of the day are in the 30s—but if you have a heat pump blowing cold air it could be working properly.
Troubleshooting a Heat Pump Blowing Cold Air
A heat pump works through the process of heat exchange. During the summer, it extracts heat from inside a home and places it outside. Conversely, the heat pump moves heat from outside and moves it inside when temps are cooler. When temperatures dip, frost can build up on the outdoor coil. As the frost build up increases it can potentially impede air flow across the coil. Your heat pump will automatically go through a defrost cycle to keep air flowing across the coil (this is a necessary function). The heat pump will switch into cooling mode which makes the outdoor coil become hot there by defrosting. In the cooling mode, hot refrigerant circulates through the outdoor coil melting the frost. When the defrost cycle is complete the system will return to the heating mode.
The Bottom Line
Don’t panic if you have a heat pump that is blowing cool air while in heat mode. Wait to see if warmer air begins to be emitted after a few minutes. DO NOT TURN OFF your unit when it is in the defrost cycle as this will keep it from defrosting itself and returning to heat. Typically, the defrost cycle lasts from 5 – 20 minutes.
Choose AC by J for Heat Pump Repair in Phoenix, AZ
If cold air is still blowing after 30 minutes or more it’s time to call us, the professionals at AC by J. We value punctuality, efficient and effective service, and your customer satisfaction above all else. Whether you have emergency repair needs, maintenance requirements, or the desire to upgrade your home with a high-efficiency heat pump, you want to trust your home’s integral comfort systems to experts who are qualified and reliable. For over three decades, AC by J’s Comfort Team has built a reputation in Phoenix for excellent HVAC services.
Schedule an appointment today and see why your neighbors in the Phoenix, Arizona area, including Scottsdale, Cave Creek, Sun City, and Paradise Valley, rely on our skilled technicians! Contact us for all your heat pump needs!