Gas Services
Gas Leak Detection in Ontario
Understanding Our Gas Leak Detection Scope
A suspected leak can involve a threaded fitting, an appliance connector, a valve or another part of the gas supply system. We start by asking what prompted the concern, which appliances were operating and whether any recent work disturbed the piping. Once the property is safe to enter and inspection is permitted, our technicians examine accessible components and use suitable detection equipment to narrow down the source. We distinguish between locating a leak, correcting the affected component and verifying the result, so the scope stays clear.
Our investigation follows the evidence rather than assuming the furnace is responsible.
Service Inclusions
- ✓ Accessible gas piping checks
- ✓ Appliance connection inspections
- ✓ Instrument based leak investigation
- ✓ Repair and testing recommendations
Typical price range
$200 to $700
Typical Ontario price range before tax. Your actual price depends on your equipment, parts and access, and is confirmed after we assess the job.
Get a tailored estimate →Leave First During a Gas Emergency
If you smell gas, leave the home immediately and call your gas utility or 911 from a safe location outside. Do not operate switches, use a phone indoors, light flames or attempt repairs. Do not stay inside to open windows or find a shutoff valve. Keep others away and do not reenter until emergency responders or the gas utility say it is safe. A quote request is not an emergency response.
Warning Signs That Need Attention
Sulphur or rotten egg odour
Natural gas has an added warning odour. If you smell gas, leave the home and call your gas utility or 911 from outside. Do not search for the source.
Unexplained hissing
Hissing near gas piping or an appliance connection can indicate escaping gas. Leave the area and contact your gas utility or 911 from a safe location rather than investigating.
A combustible gas alarm
Treat a fuel gas alarm as an urgent warning. Leave and contact your gas utility or 911 from outside. A carbon monoxide alarm detects a different hazard, not natural gas.
Damage after nearby work
A strained connector, shifted appliance or visibly damaged pipe warrants professional assessment. Do not move the appliance again or try tightening fittings yourself, even without an obvious warning odour.
Inside the Inspection Process
- 01
We ask about warning signs
And any utility attendance before arranging an inspection.
- 02
We inspect accessible piping
Valves and appliance connections using appropriate detection methods.
- 03
We identify the affected area
Access limitations and any separate repair or testing requirements.
- 04
After corrective work
After corrective work, the affected components require appropriate leak checks before return to service.
Factors That Shape Your Quote
Inspection scope
A single accessible connection requires a different investigation than several appliance branches or concealed piping.
Testing and access
Isolation, pressure testing, restricted access and coordination with the utility can affect the work required.
Corrective work
Replacement connectors, valves or piping are separate considerations from detection. We explain the proposed scope before authorization.
Finding the actual source helps avoid replacing an appliance that is not causing the problem. We separate observations from confirmed findings and explain what remains untested. That gives you a practical basis for deciding on repairs, arranging access to hidden piping or coordinating utility follow up, rather than treating an uncertain warning sign as a routine maintenance issue.
Questions About Suspected Gas Leaks
+Should I call HeatNest first if I smell gas?
No. If you smell gas, leave the home and call your gas utility or 911 from a safe location outside. Do not investigate or make calls indoors. Once the emergency is addressed, contact us about inspection or repair work identified by the utility.
+Can you check for a leak if the odour has stopped?
An odour disappearing does not establish that the property is safe. Report suspected escaping gas to your utility from outside. After clearance, we can investigate accessible piping and connections, using your description and any utility findings to guide the inspection.
+Does every gas leak inspection require a pressure test?
No. The appropriate method depends on the concern, system condition and applicable requirements. Accessible leaks may be located with detection equipment and approved solution. A pressure test serves a different purpose and requires preparation, including isolating equipment that cannot withstand the test pressure.
+Will a carbon monoxide detector find a natural gas leak?
A standard carbon monoxide detector does not detect natural gas. Carbon monoxide is a combustion hazard; escaping natural gas is a fuel gas hazard. Some devices combine functions, but you must check the device label and instructions rather than assume it detects both.
+Can you inspect connections on different appliance brands?
Leak investigation focuses on the piping, connectors, valves and relevant appliance components, rather than a single brand. Tell us which appliances are involved when booking. If an internal appliance fault is suspected, model specific service information or parts may be needed for further work.
+Does detection include repairs and gas restoration?
Not automatically. Detection establishes findings within the agreed inspection scope. Repairs require their own authorization, and restoration may depend on testing, utility instructions or other requirements. We explain the next steps without assuming that locating a leak means the system can immediately operate again.
Preparing for a Cleared Site Visit
After emergency clearance
After emergency clearance, share the utility's findings and any instructions or service restrictions with us.
Describe where the concern occurred
Without returning inside to collect photographs or appliance information.
Mention recent appliance moves
Renovations or gas piping work when arranging the inspection.
Keep inspection findings
Keep inspection findings and repair records for future service visits and appliance changes.
Choose an Evidence Led Investigation
We approach gas concerns with a defined inspection scope and clear safety boundaries. Our technicians explain which connections they can access, what testing is appropriate and whether another party must handle part of the work. As a North York heating, cooling and gas company, HeatNest can also consider how the affected piping connects to your home's fuel burning equipment.
Evidence led investigation
We use observations and suitable detection methods to investigate the source rather than assuming the nearest appliance needs replacement.
Defined inspection limits
We explain inaccessible areas and utility responsibilities so you understand what our visit can establish and what needs follow up.
Clear repair scope
We distinguish detection from corrective work and explain proposed repairs before asking you to authorize the next stage.
Appliance aware testing
We consider connected equipment when planning tests, including required isolation to avoid exposing appliance controls to unsuitable test pressures.
Serving North York and Surrounding Communities
Based in North York, we receive Gas Leak Detection enquiries from Toronto, the GTA and Ontario communities. Contact us to confirm service availability for your address and inspection needs. For an active gas emergency, leave the property and contact your gas utility or 911 first.
Acton · Adjala Tosorontio · Ailsa Craig · Ajax · Angus · Arva · Aurora · Aylmer · Ayr · Barrie · Bolton · Bowmanville · Bradford · Brampton · Brantford · Brooklin · Burford · Burlington · Caledon · Cambridge · Clarington · Collingwood · Courtice · Delaware · Dorchester · Dutton · East Gwillimbury · East York · Enniskillen · Erin · Etobicoke · Exeter · Fort Erie · Georgetown · Georgina · Glencoe · Grimsby · Guelph · Halton Hills · Hamilton · Hensall · Ilderton · Ingersoll · Innisfil · Keswick · Kilworth · King City · Kitchener · Komoka · Lincoln · London · Lucan · Markham · Midland · Milton · Mississauga · Mitchell · Mitchell Corners · Mono · Mount Brydges · New Tecumseth · Newcastle · Newmarket · Niagara Falls · Niagara on the Lake · Nobleton · North York · Norwich · Oakville · Orangeville · Orillia · Oro Medonte · Orono · Oshawa · Ottawa · Parkhill · Pelham · Pickering · Port Colborne · Port Stanley · Puslinch · Richmond Hill · Scarborough · Schomberg · Scugog · Shedden · Smithville · Springwater · St. Catharines · St. Marys · St. Thomas · Stratford · Strathroy · Sutton · Thamesford · Thorndale · Thornhill · Thorold · Tillsonburg · Toronto · Tottenham · Tyrone · Unionville · Uxbridge · Vaughan · Wasaga Beach · Waterloo · Welland · Whitby · Whitchurch Stouffville · Woodstock
What customers say about our gas leak detection
"Tidy, quick and thorough. Everything was tested before they left and it's been running perfectly since."
"Booking was easy and the price matched what they told me on the phone. They cleaned up after themselves too."
"Called in the morning, had someone here by mid afternoon. Friendly, careful and professional from start to finish."
Request Your Inspection Quote
Need a quote for Gas Leak Detection after an immediate safety concern has been addressed? Call HeatNest at (289) 801-7262. Tell us your location, the affected appliances and any utility findings so we can discuss the inspection scope and arrange the appropriate next step.