How To Troubleshoot When Your Furnace Won’t Start

Like every other electrical appliance, furnaces are susceptible to faults and failures with increased usage and old age. It is quite uncomfortable to have your heater break down suddenly on a cold night, calling into question how well your system has been maintained over the years.

If you are concerned about your heating unit and require an inspection or furnace cleaning, contact Universal HVAC for furnace sales Newmarket ON.

Causes of Heater Malfunctions.

  • A Lack of Upkeep

It is among the most frequent reasons for heating system failures worldwide. Like dirty air filters, a dirty blower motor can cause system overheating by obstructing airflow through the heat exchanger and deepening the problems. A dirty flame sensor might also stop the burner from igniting and terminate its operation.

  • Faulty Blower Capacitor

A capacitor starts your furnace in response to the thermostat settings. You can only start your blower motor if the levels are high enough. The blower won’t be able to revolve at the required speed because the capacitor will stop working.

Due to its resemblance to a large battery that can only be replaced after a certain time, capacitor failures are frequent and expensive.

  • Thermostat Issues

An incorrectly placed thermostat might damage the system by allowing the heat from your furnace to build up. Due to this, the new programmable thermostats are made to be more dependable and simple to maintain.

Your furnace will operate continuously if your thermostat is broken, reducing its efficiency and increasing energy costs. You may convert to smart thermostats. If you require assistance with this, contact Universal HVAC. We will put you in touch with one of our heating and cooling experts in Newmarket, ON to assist you.

  • Low Refrigerant Levels

Low refrigerant levels may primarily cause heat strips and high energy costs. Check your refrigerant levels if you discover an exceptionally high number of heat strips. Neglecting the warning indications might result in compressor failure and overheating. Therefore, it is preferable to seek expert assistance to fix the leaks and replace your damaged compressor.

  • Defective Inducer Draft Motor

When the gas from combustion has been removed from the heat exchanger, your inducer motor may burn out from overpressure. The first indication of a problem is when the unclean system malfunctions and the safety switch is switched off.

The furnace will go off, and you’ll need a new system. See a professional to examine the flue gas and burner efficiency and identify any other issues.

  • The Heat Exchanger is Not Working

Your heating system’s effectiveness might gradually decline if your heat exchanger unit is damaged. Although system failure can result from reduced airflow caused by dirt and debris, these signs are not immediately apparent when the issue first arises. Your appliance may leak carbon monoxide if the heat exchanger is damaged, which calls for immediate attention.

  • Unsuitable Ductwork

When you rely on unskilled and inexperienced contractors for ductwork installation, there are high chances that the installation is inaccurate and might sabotage the efficiency of your system. Poor job at installation will restrict your home’s airflow and lead to overheating due to exhaustion. The only solution is to find an experienced professional and reinstall the ductwork.


Universal Heating & Cooling, Inc is here to deal with all your issues regarding heating and cooling in Newmarket, ON. We are certified and trusted for impeccable HVAC services and professionalism. Call us to schedule an appointment or book by visiting our website.