Is your heating system blowing cold air rather than warm air this winter? This indicates that your heating system requires maintenance and a professional inspection to be efficient and perform properly.

What if you run into this issue when you get home from work?

While calling for emergency heating repair services is an option, you can fix your heating system at home using troubleshooting tips.

If the problem persists after troubleshooting, call  Bluesky Plumbing & Heating, a professional contractor specializing in services in Surrey, Vancouver and nearby areas..

Problems That Can Lead to the Heating System Blowing Cool Air

Here are a few reasons why your heating system may be malfunctioning:

The pilot light is turned off.

Older furnaces have a pilot light that aids in the ignition process. All that remains is to locate the pilot light and its reset toggle switch. The reset toggle switch, located near the bottom of the system, turns the system off.

Wait 5-10 minutes before switching it to the on position. Find the reset button by adjusting the reset switch to the pilot setting. Hold the reset button while lighting the pilot light with a candle, and then release it when it is burned again.

The flame detector has dirt on it.

The flame detector is used in some gas furnaces to start the ignition and ensure the heating cycle is completed correctly. The heating system may blow cold air if the flame detector is covered in dirt, dust, or grime.

According to our heating repair technicians in Surrey, Vancouver and nearby areas., all you need to do is locate the flame detector and clean it with a soft cloth. The flame detector is located on the burner assembly’s right side.

Air filter clog

A clogged air filter can reduce indoor air intake and cause the heating system to operate inefficiently. Replace your air filter if your heating system blows cold rather than warm air.

Blocked condensate pipes

A clog in the ductwork can suddenly cause the burners to stop working, and you may only receive warm air once the burners are repaired. As a result, you can inspect the condensate drain and clean the blockage with a long brush.

To clean the drain, pour a pan of boiling water down it. After a few minutes, pour a spoonful of baking soda and vinegar down the pipe to keep it clear of future blockages.

Problems with the ductwork

Air can escape to the outside environment through cracks in the duct joints, a massive hole in the duct, or deteriorated insulation on the pipes. So your heating system is operational, but the warm air is not reaching its destination due to airway issues. A technician can assist you in repairing the ductwork.

Incorrect thermostat settings

Some of our furnace repair experts in Surrey believe that your preferred thermostat settings can change by accident. So, before calling the technicians, double-check the thermostat settings. Make sure the blower motor is set to auto rather than on. If your thermostat is set to on, the heating system will run continuously even if it produces heat.


When the temperature drops, it can be challenging to go a day without using the heating system. So, if the troubleshooting tips do not help, contact us as soon as possible for heating repair services. Bluesky Plumbing & Heating is best in Surrey, Vancouver . Our technicians help you sleep comfortably in your home during these extreme temperatures. Call (236) 868-7090 as soon as possible!