How do I test my Ottawa snow-melt system before winter?

Testing your heated driveway system before Ottawa's winter season is essential to ensure it's working properly when you need it most. Start testing in late October or early November, well before the first significant snowfall, so you have time to address any issues.

For electric snow-melt systems, begin by checking the control panel and thermostat settings. Most systems have both air temperature and pavement temperature sensors — verify both are functioning and set to appropriate activation temperatures (typically 2-4°C for air sensors, 0-2°C for pavement sensors). Test the manual override function to ensure you can activate the system regardless of sensor readings. Check that all electrical connections are secure and that the GFCI protection is working properly. If your system has zone controls, test each zone individually to confirm even heating across the entire driveway surface.

For hydronic (water-based) systems, inspect the boiler or heat source, circulation pumps, and fluid levels in the closed-loop system. Check that the glycol antifreeze mixture is at the proper concentration — Ottawa's extreme winter temperatures require a glycol concentration that prevents freezing down to -35°C. Test the circulation pumps and verify that heated fluid is flowing through all tubing loops. Look for any signs of leaks in the system, particularly at joints and connections that may have shifted during last winter's freeze-thaw cycles.

Ottawa's climate makes pre-winter testing critical because our heating systems work harder and longer than in milder climates. With over 200cm of annual snowfall and temperatures regularly dropping below -25°C, a system failure in January means weeks of manual snow removal and potential ice buildup. The extreme temperature swings in Ottawa — from -30°C in winter to +35°C in summer — stress all system components, making annual testing and maintenance essential.

Practical testing steps include running the system for several hours during a cool day to verify even heat distribution across the driveway surface. Use an infrared thermometer to check for cold spots that might indicate damaged heating elements or blocked tubing loops. For electric systems, verify that the amp draw matches the system specifications — higher than normal amperage can indicate damaged cables or moisture intrusion. For hydronic systems, monitor fluid pressure and temperature to ensure the system reaches design parameters.

When to hire a professional: Any electrical troubleshooting, glycol system servicing, or repairs to embedded heating elements require licensed trades. ESA-licensed electricians must handle electric system repairs, while licensed plumbers handle hydronic system maintenance. If you discover uneven heating, system cycling issues, or error codes on the control panel, professional diagnosis is essential before winter arrives. Attempting DIY repairs on embedded systems can damage the driveway surface and void warranties.

Most Ottawa heated driveway contractors offer pre-season system checks for $150-300, which includes testing all components, fluid level checks, and minor adjustments — a worthwhile investment given replacement costs of $15,000-35,000.