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Ottawa Heat Pump Not Working: Troubleshooting Guide

When your heat pump stops working, it can lead to discomfort and frustration, especially during Ottawa’s extreme weather conditions. This guide will help you troubleshoot common issues with your heat pump and determine whether you can fix the problem yourself or need to call in a professional.

Common Issues and Solutions

1. Heat Pump Not Turning On

Potential Causes:

  • Power Supply Issues: Ensure that the heat pump is receiving power. Check the circuit breaker and fuse box for any tripped breakers or blown fuses.
  • Thermostat Problems: Verify that the thermostat is set to the correct mode (heating or cooling) and temperature. Check the batteries if the thermostat is battery-operated.


  • Reset the Circuit Breaker: If the breaker is tripped, reset it and see if the heat pump turns on.
  • Check the Thermostat: Replace the batteries and make sure the thermostat settings are correct.

2. Inadequate Heating or Cooling

Potential Causes:

  • Dirty Air Filters: Clogged filters can restrict airflow, reducing the system’s efficiency.
  • Blocked Outdoor Unit: Debris around the outdoor unit can obstruct airflow.
  • Refrigerant Issues: Low refrigerant levels can affect the heat pump’s ability to heat or cool effectively.


  • Clean or Replace Filters: Ensure air filters are clean and replace them if necessary.
  • Clear Debris: Remove any leaves, dirt, or debris around the outdoor unit.
  • Professional Check: If the issue persists, contact a professional to check refrigerant levels and look for leaks.
Gree Flexx heat pump installation in Westboro
Gree Flexx heat pump installation in Westboro

3. Heat Pump Running Constantly

Potential Causes:

  • Thermostat Settings: The thermostat might be set too high or too low, causing the system to run continuously.
  • Leaky Ducts: Air leaks in the ductwork can cause the system to work harder to maintain the desired temperature.
  • Mechanical Issues: Problems with the blower motor or other components can cause continuous operation.


  • Adjust Thermostat Settings: Set the thermostat to a more moderate temperature.
  • Inspect Ductwork: Check for and seal any leaks in the ductwork.
  • Call a Professional: Have a technician inspect the system for mechanical issues.

4. Unusual Noises

Potential Causes:

  • Loose Components: Loose parts can create rattling or banging noises.
  • Debris in the Unit: Objects stuck in the fan or other components can cause unusual sounds.
  • Worn Bearings: Worn bearings in the motor can produce squealing noises.


  • Tighten Loose Parts: Check for and tighten any loose screws or bolts.
  • Remove Debris: Inspect the outdoor unit for any debris and remove it.
  • Professional Inspection: If the noise persists, contact a professional to inspect the system.
Cold Climate heat pumps installed, serviced and maintained by AirZone HVAC in Heron Gate, Ottawa
Cold Climate heat pumps installed serviced and maintained by AirZone HVAC in Heron Gate Ottawa

When to Call a Professional

While some issues can be resolved with basic troubleshooting, others require the expertise of a professional. Here are a few scenarios where you should contact AirZone HVAC Services:

  • Persistent Problems: If you’ve tried the above solutions and the problem persists, it’s time to call a professional.
  • Complex Repairs: Issues involving refrigerant, electrical components, or major mechanical failures should be handled by a certified technician.
  • Regular Maintenance: Regular maintenance can prevent many common issues and keep your heat pump running efficiently.

At AirZone HVAC Services, we’re here to help with all your heat pump needs. Whether you need a repair, diagnostic, or emergency service, our team of experienced technicians is ready to assist you.

Contact AirZone HVAC Services

Bosch Heat Pump installation in Fitzroy Harbour from AirZone HVAC Services.

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