Drone Thermal Imaging Services in Canada: Uses, Limits and Cost
What a thermal drone can and can't show in Canada: heat loss, roof moisture, electrical faults and solar panels, the conditions it needs, the rules and costs.
Drone thermal imaging maps surface temperature from the air. A thermal camera on a drone can point to heat escaping from a building, wet insulation in a flat roof, an overheating electrical connection or a failed solar panel, and it covers in minutes what would take hours on foot or on a lift. What it can’t do is tell you why a spot is warm. In Canada, thermal work also depends on the weather and the season more than any other drone service, and a thermal scan usually adds to the cost of a visual inspection rather than replacing it.
What a Thermal Drone Measures
A thermal camera reads the infrared energy that surfaces give off and turns it into an image where colour stands for temperature. Three things matter when you hire:
- Radiometric or not. A radiometric camera stores a temperature value for every pixel, so the images can be measured and compared after the flight. A non-radiometric camera only makes a picture. For inspections and reports, ask for radiometric data.
- Resolution. Thermal cameras have far fewer pixels than ordinary cameras. 640 × 512 is common on inspection drones, and smaller drones often have less. Fewer pixels means flying closer to see the same detail.
- The surface only. A thermal camera can’t see through walls, roofs, glass or panels. It shows the heat that reaches the surface, which is a clue to what’s happening underneath.
Most thermal drones carry a regular camera alongside the thermal one, so every thermal image comes with a matching photo of the same spot.
What People Hire Thermal Drones For
| Job | What thermal shows | Best conditions |
|---|---|---|
| Heat loss from buildings | Warm areas where heat escapes: missing insulation, air leaks around windows, roof edges and joints | Cold weather, a big difference between inside and outside, before sunrise or after dark |
| Flat and low-slope roofs | Wet insulation, which stays warm longer as the roof cools in the evening | A dry, sunny day, scanned after sunset |
| Electrical equipment | Connections and components running hotter than their neighbours | Equipment working under its normal load |
| Solar panels | Hot cells, failed diodes and panels or strings that aren’t producing | Strong, steady sunshine on the panels |
| Search, rescue and wildlife | A warm body against a cooler background | Night or cool hours; dense canopy blocks the view |
| After a wildfire | Smouldering hot spots in the ground | Cool hours, when the ground has lost the sun’s heat |
Each of these has its own guide. See drone roof inspection, drone solar panel inspection, drones in public safety and drones and wildfires.
Heat Loss and Building Envelopes
For heat loss, the house or building has to be heated and the outside cold, so the difference shows. A difference of about 10 °C between inside and outside is a common rule of thumb, which makes the Canadian heating season ideal. Scans run before sunrise or after dark, once the sun’s warmth has left the walls. A drone is most useful on tall buildings, large roofs and upper storeys that a handheld camera can’t see well from the ground.
Electrical Equipment
A loose or corroded connection resists the current and warms up. A drone can check substations, transmission lines and rooftop equipment without anyone climbing or getting close to live parts. The equipment has to be carrying its normal load, because a fault that carries little current barely warms.
Reading the Results: A Hot Spot Is a Clue
Thermal images are easy to misread. A good operator controls for these:
- Reflections. Shiny metal, glass and water reflect heat from the sky, the sun and nearby buildings. A metal roof that looks cold may only be reflecting a clear sky.
- The sun. Sunshine warms surfaces unevenly, which hides what’s happening underneath. That’s why building and roof scans happen after dark, and why solar scans are the exception.
- Wind and rain. Wind cools surfaces and evens out differences. Wet surfaces cool as they dry. Rain usually means no scan.
- Temperature on screen. The number depends on camera settings such as the material, the distance and the humidity. Differences between neighbouring areas usually matter more than the exact reading.
A warm or cold spot shows where to look. A roofer with a moisture meter, an electrician or an energy advisor confirms what it means. Ask who will analyze the images and what thermography training they have. Courses such as Level 1 and Level 2 thermographer training teach how to set up the camera and read the results.
Timing It Around the Canadian Seasons
- Heat loss: the heating season, on cold, calm nights. Snow on a roof hides it, but walls can still be scanned.
- Roof moisture: spring to fall, after a dry, sunny day. Not with snow on the roof, and not after rain.
- Solar panels: spring to early fall, when the sun is strong and the panels are clear of snow.
- Electrical: year-round, timed around the equipment’s load.
Winter flying means short days and cold batteries, so allow a backup date. Our guide to winter drone operations covers the rest.
Flying After Dark and Other Rules
The pilot is responsible for flying legally, but knowing the basics helps you hire the right person.
- Certificate. Anyone flying a drone between 250 g and 25 kg needs a Transport Canada pilot certificate. Basic operations stay in uncontrolled airspace and at least 30 metres horizontally from anyone not involved in the operation. Closer to people, on most residential streets, or in controlled airspace near an airport, the pilot needs an Advanced certificate. Controlled airspace also needs an RPAS flight authorization from NAV CANADA.
- At night. Much thermal work happens before sunrise or after dark. Canadian rules allow night flights, but the drone must carry lights that keep it visible to the pilot, and the pilot plans the site in daylight first: obstacles, wires, people and a safe place to land.
- Close to buildings. Since November 4, 2025, Advanced pilots can also fly sheltered operations close around a building or structure, which helps on façade scans. See what changed on November 4.
- Privacy. Thermal images of homes and yards are still images of people’s property. Keep the camera on the building you hired it for, tell the neighbours, and agree in writing who keeps the data.
Check your address on our free Airspace Explorer map before you call anyone. It shows controlled airspace, aerodromes and restricted areas.
What Drone Thermal Imaging Costs
These ranges come from our guide to what it costs to hire a drone pilot in Canada:
| Job | Typical price (CAD) | Usually includes |
|---|---|---|
| Commercial roof (single building) | $500–$1,500 | Photos, thermal scan and a report |
| Solar farm (utility scale) | $0.40–$1.00 per panel | Thermal scan and a per-panel report |
Analysis by a thermography specialist often adds 15–30%. Heat-loss scans of homes, electrical surveys and search work are usually quoted per job or per hour. Night work, written reports, the raw radiometric files and a weather backup day all change the price. They’re a starting point for budgeting, not a quote.
Questions to Ask Before You Hire
- Is your thermal camera radiometric, and what’s its resolution?
- When will you fly, what conditions do you need, and what happens if the weather isn’t right on the day?
- Who analyzes the images, and what thermography training do they have?
- What will I receive: marked-up images, a written report, the raw radiometric files?
- Which Transport Canada certificate do you hold, and is the site in controlled airspace or near an airport or heliport?
- Can you send a certificate of insurance?
Our hiring checklist covers the rest, from drone registration to who owns the data.
Find a Thermal Pilot on the RPAS WILCO Marketplace
The RPAS WILCO Marketplace lists drone pilots and drone service companies across Canada. Filter by thermal imaging to see who offers it, then narrow by province, industry or language. Each profile shows the pilot’s experience with each service and their specialties, such as radiometric thermal, heat loss detection, electrical hotspots and night operations.
Pilots on the Marketplace are independent, so check their certificate and insurance yourself. RPAS WILCO doesn’t add booking fees or take a commission, so the price you agree is the price you pay.
Frequently Asked Questions
Can a thermal drone see through walls or roofs?
No. A thermal camera measures the temperature of the surface it sees. Heat escaping through a wall or warming a roof shows on the surface, which points to the problem underneath, but the camera can’t see inside.
What’s the best time of day for a drone thermal scan?
For buildings and roofs, after dark or before sunrise, once the sun’s heat has left the surfaces. Solar panels are the opposite: they’re scanned in strong, steady sunshine, when they’re producing power.
Does a thermal drone survey need an Advanced certificate?
It depends on the site. Near people, on most residential streets or in controlled airspace, the pilot needs an Advanced certificate. In uncontrolled airspace, at least 30 metres from anyone not involved, a Basic certificate is enough.
Can a thermal drone find a roof leak?
It can point to wet insulation in flat and low-slope roofs, which usually stays warm longer as the roof cools in the evening. A roofer confirms it with a moisture meter or a core sample before any repair.
How much does a drone thermal inspection cost in Canada?
A commercial roof with a thermal scan and a report is typically $500–$1,500. Utility-scale solar farms are typically $0.40–$1.00 per panel. Specialist analysis often adds 15–30%.