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Common Symptoms

If you're experiencing any of these symptoms, you may have this problem:

Heat pump blows cold air in heat mode
Insufficient heating
Outdoor unit not running
System stuck in cooling mode

Possible Causes & Solutions

Thermostat Settings

DIY Possible

Ensure thermostat is set to HEAT mode

Reversing Valve Failure

Pro Required

Professional reversing valve repair

Low Refrigerant

Pro Required

Professional leak repair and recharge

Defrost Problems

Pro Required

Professional defrost control repair

Outdoor Unit Issues

Pro Required

Professional diagnosis required

When to Call a Professional

While some issues have DIY solutions, HVAC systems are complex. Call a professional when:

  • DIY solutions don't resolve the problem
  • The issue involves electrical components
  • You smell gas or burning odors
  • The problem returns after temporary fixes
  • Your system is under warranty (DIY repairs may void it)
Call San Jose HVAC Pros: (650) 397-7060

Frequently Asked Questions

Why is my heat pump freezing up?

Ice buildup can be caused by low refrigerant, restricted airflow, malfunctioning defrost controls, or outdoor fan issues. It needs professional diagnosis.

Why is my heat pump not heating effectively?

This could be due to low refrigerant, a reversing valve issue, or outdoor unit problems. Heat pumps are less effective in extreme cold without auxiliary heat.

How quickly can you come out for service?

We offer same-day service for most calls received before noon. For emergencies, we have 24/7 availability and typically arrive within 1-2 hours.

Do you provide free estimates?

Yes, we provide free estimates for all installations and replacements. For repairs, there is a diagnostic fee that is waived if you proceed with the repair.

Need Help With No Heat from Pump?

San Jose HVAC Pros technicians are ready to diagnose and fix your problem

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