At Airtek, we know the importance of reliable heating, especially during Manitoba's harsh winters. As a trusted HVAC wholesaler, serving businesses and contractors across Winnipeg and Quebec, we understand the frustration a malfunctioning heat pump can cause for you or your clients. If a heat pump is blowing cold air instead of keeping a space warm, here are the most common causes and tips to address them.

1. The Heat Pump is in Defrost Mode

Heat pumps periodically enter defrost mode to prevent ice buildup on the outdoor unit. During this cycle, the system might temporarily blow cooler air inside. If this is the case, no action is needed—this process is normal. However, if defrost mode runs too frequently, it may indicate an issue with the defrost cycle control or sensor.

2. Thermostat Settings are Incorrect

Simple issues like incorrect thermostat settings are surprisingly common. Make sure the thermostat is set to “heat” mode and the desired temperature is higher than the current indoor temperature. With Airtek’s ECOBEE PRO Lite 3 thermostats, your clients can enjoy intuitive controls and superior performance, minimizing these issues.

3. Low Refrigerant Levels

Refrigerant is crucial for a heat pump’s ability to transfer heat. A low refrigerant charge—often due to leaks—can prevent the system from heating properly. Signs of a refrigerant issue include frost on the outdoor coil and insufficient heating. HVAC contractors should inspect and recharge the system as necessary.

4. Dirty Air Filters or Coils

Clogged air filters or dirty outdoor coils can restrict airflow, reducing the efficiency of the heat pump. Regular maintenance is key to preventing this issue. Airtek offers a range of HVAC accessories and supplies to help contractors maintain peak system performance.

5. Outdoor Unit is Blocked or Iced Over

Snow, debris, or ice can block the outdoor unit, hindering the heat pump's ability to draw in air. Ensure the outdoor unit is clear and check for proper drainage. If the unit is iced over, thawing it with warm water and troubleshooting the defrost system may resolve the issue.

6. Faulty Components

Malfunctioning parts like reversing valves, compressors, or sensors can cause a heat pump to blow cold air. Diagnosing and replacing these components typically requires a trained technician. At Airtek, we stock quality replacement parts to ensure your clients can get their systems running again quickly.

Why Partner with Airtek?

As a B2B HVAC supplier, Airtek is committed to supporting contractors and businesses with top-quality products, expert advice, and unbeatable service. From heat pumps to thermostats and everything in between, our team is here to help you provide the best solutions to your customers.

If you're looking for reliable HVAC products and support, visit us at Airtek Shop or contact us today!

With Airtek, your business is always prepared for the challenges of winter heating.