Keep Vents and Meters Clear of Snow
Ontario winters bring heavy snow and freezing temperatures. While shovelling driveways and sidewalks is usually top of mind, one critical safety task is often overlooked: keeping your gas meter, water heater exhaust, furnace exhaust, and dryer vent clear of snow and ice.
The image shows a common winter scenario—snow accumulation around exterior vents and meters. While it may look harmless, blocked vents can create serious safety risks inside your home.
Why Keeping These Areas Clear Matters
1. Gas Meter Safety
Your gas meter needs open airflow to function safely.
If snow or ice builds up around it:
• Pressure regulators can malfunction
• Gas flow may be disrupted
• In extreme cases, this can lead to gas leaks or emergency shutoffs
What to do:
• Keep at least 3 feet (1 metre) of clearance around your gas meter
• Gently brush away snow
2. Furnace & Water Heater Exhaust Vents
High-efficiency furnaces and water heaters vent exhaust gases—like carbon monoxide—outside your home.
If these vents become blocked:
• Exhaust gases can back up into your home
• Carbon monoxide levels can rise quickly
• Furnaces or water heaters may shut down unexpectedly
Why this is dangerous: Carbon monoxide is colourless, odourless, and extremely dangerous. Even short-term exposure can cause serious health issues.
What to do:
• Check vents after every snowfall
• Clear snow and ice buildup immediately
• Ensure vents remain above expected snow levels
3. Dryer Vents
Dryer vents expel warm, moist air from your home.
When dryer vents are blocked:
• Moisture can build up inside walls
• Lint accumulation increases fire risk
• Dryers work harder, increasing energy costs
What to do:
• Keep exterior dryer vents clear and visible
• Watch for frost buildup, which can indicate poor airflow
Signs You May Have a Blocked Vent
• Furnace or water heater shutting off unexpectedly
• Carbon monoxide alarm sounding
• Frost or ice forming around vent openings
• Clothes taking longer than usual to dry
If you notice any of these signs, clear the snow immediately and contact a licensed professional if the issue persists.
Winter Safety Checklist for Homeowners
✔ Check exterior vents after every snowfall
✔ Maintain proper clearance around meters and exhausts
✔ Install carbon monoxide alarms on every level of your home
✔ Schedule annual maintenance for heating equipment
✔ Avoid piling snow near vents when shovelling
Stay Safe This Winter
A few minutes spent clearing snow from your home’s exterior vents can prevent costly repairs—and more importantly, help protect your family’s safety.
If you’re ever unsure whether your gas meter, furnace exhaust, water heater vent, or dryer vent is properly installed, protected, or clear after a snowfall, Vista Services is here to help.
We work with trusted local contractor partners who live and work in your community to help ensure your home comfort equipment is operating safely and efficiently—especially during harsh Ontario winters.
Contact Vista Services to connect with a qualified local professional who can answer questions and help keep your family safe all winter long.