Recently our team at Service Guys responded to a service call in Brampton, part of the Greater Toronto Area, where a homeowner reported two unusual problems:
their water heater was not functioning properly, and
there was a strange noise coming from the vent system.
What initially sounded like a mechanical issue quickly turned into a wildlife removal situation — and a potentially serious safety risk.
The Initial Problem: Water Heater Issues and Strange Noises
The homeowner noticed that the water heater was intermittently malfunctioning, and at the same time they could hear scratching or movement coming from the vent pipe that runs through the house and exits the roof.
In homes across the Greater Toronto Area, this type of noise is often the first sign that wildlife has entered the ventilation system.
When we inspected the vent, the cause became clear.
What We Found Inside the Vent
Inside the pipe we discovered a large squirrel nest built directly inside the ventilation system.
The situation included:
One dead squirrel
One live squirrel
A large amount of nesting material (sticks, insulation, debris)
The nest had been built because the vent pipe did not have a protective cap or wildlife guard installed.
Without this protection, animals such as squirrels, birds, and raccoons can easily enter the system and create nests.
Why This Is a Serious Problem
When animals build nests inside vents connected to appliances like water heaters or furnaces, several dangerous issues can occur:
1. Blocked Exhaust
Water heaters require proper airflow to vent combustion gases safely. A nest can partially or completely block the pipe.
2. Carbon Monoxide Risk
If exhaust gases cannot exit properly, carbon monoxide can build up inside the home.
3. Appliance Damage
Blocked vents can cause overheating or system shutdowns, leading to expensive repairs.
4. Fire Hazard
Dry nesting material combined with heat from appliances creates a real fire risk.
What Our Technicians Did
Our team performed the following steps:
1. Full vent inspection
We inspected the entire vent line to determine the level of blockage.
2. Partial nest removal
We removed as much nesting material as possible safely.
3. Removal of the deceased squirrel
Unfortunately, one squirrel had already died inside the nest.
4. System cleaning
The vent pipe was cleared of debris to restore airflow.
Because one squirrel was still alive, we left part of the nest in place temporarily to avoid trapping the animal deeper inside the system.
Follow-Up Visit Required
Once the remaining squirrel leaves or the nest becomes inactive, we will return to:
fully remove the remaining nesting material
deep clean the vent system
install a protective chimney/vent cap
This will permanently prevent wildlife from entering the pipe again.
The Real Cause: Missing Vent Protection
The root cause of this problem was simple:
There was no protective cap or wildlife guard on the vent pipe.
This small component is extremely important. Without it, animals can easily enter the system from the roof.
In the Toronto and surrounding GTA areas, wildlife intrusion into vents and chimneys is very common.
How Homeowners Can Prevent This
To avoid situations like this, homeowners should:
✔ Install chimney or vent caps
✔ Inspect roof vents annually
✔ Schedule regular vent and chimney inspections
✔ Listen for unusual scratching or movement sounds in walls or pipes
A simple protective cap can prevent thousands of dollars in repairs.
Why Regular Vent Inspections Matter
Many homeowners only discover these problems after their appliance stops working.
But regular inspection can detect:
animal nests
airflow problems
vent damage
dangerous blockages
Early detection protects both your home and your family’s safety.
Need Chimney or Vent Inspection in the GTA?
If you hear scratching, chirping, or unusual noises inside your chimney or vent system, it may indicate wildlife activity.
The team at Service Guys provides:
chimney and vent inspections
wildlife nest removal
chimney cleaning
vent cap installation
appliance vent maintenance
Serving homeowners across **Greater Toronto Area including Brampton, Mississauga, and Toronto.
✅ Tip: If your home has roof vents or chimneys without caps, installing protection is one of the easiest ways to prevent wildlife problems and maintain safe airflow.
Need Professional Service?
Our expert technicians are ready to help with all your home service needs.
Schedule Service Today