⚡ How Electrical Contractors Can Slowly & Successfully Add Thermography to Their Business Model

Many small and medium-sized electrical contractors are looking for new ways to expand their services, increase customer value, and separate themselves from competitors. Electrical thermography can be a natural addition because electricians already understand the equipment, loads, terminations, conductors, and operating conditions they are inspecting.

The challenge is knowing how to begin. You do not need to build a complete thermography division on day one. A better approach is to add the service gradually, develop sound measurement and reporting practices, and build experience before expanding into larger inspection programs.

This guide explains how electrical contractors can implement thermography one step at a time while using the Certified Thermal Electrician™ (CTE™) Program to develop the electrical-thermography knowledge needed to provide a professional service.

🚀 Why Thermography Is a Natural Fit for Electrical Contractors

Thermography allows electricians to observe thermal patterns that cannot be identified through an ordinary visual inspection. When performed under appropriate operating conditions and interpreted correctly, infrared imaging can reveal abnormal temperature differences that deserve additional investigation.

Contractors can use thermography to:

• Identify abnormal thermal conditions before visible damage occurs.
• Provide additional condition information during electrical maintenance.
• Document electrical equipment before and after corrective work.
• Provide customers with visual and thermal documentation.
• Add electrical condition-assessment services to maintenance agreements.
• Differentiate their business through specialized electrical knowledge.

The key is understanding that the thermal camera is a measurement tool. It does not automatically diagnose the electrical problem or determine the cause of an abnormal temperature.

With the Certified Thermal Electrician™ Program, electricians learn how electrical operating conditions, measurement variables, comparison methods, and infrared physics affect what the camera is showing.

🐢 Step 1: Start Small — Add Thermography to Work You Already Perform

The easiest way to begin is not to create a separate thermography division. Instead, start using the technology within the type of electrical work your company already understands.

Examples can include:

• Evaluating electrical panels during commercial service work.
• Inspecting terminations and connections under operating load.
• Adding thermography to established electrical maintenance inspections.
• Investigating reported overheating or unusual equipment behavior.
• Documenting operating conditions before and after corrective work.

Any energized thermographic inspection must still be performed within the employer or facility electrical safety program. The fact that a thermal camera is noncontact does not eliminate electrical hazards created by opening equipment, removing covers, or approaching exposed energized parts.

🔧 Step 2: Use Thermography Internally First

Before selling full thermographic inspections, contractors can use the camera internally to develop familiarity with normal electrical thermal patterns and measurement technique.

Useful applications can include:

• Reviewing new panel and distribution installations under normal operating load.
• Comparing similar connections following corrective maintenance.
• Reviewing replacement breakers and associated terminations.
• Evaluating motors, transformers, disconnects, and HVAC electrical equipment.
• Learning how load, angle, emissivity, reflections, distance, and focus affect an image.

Thermography should not be used as proof that a termination has been properly torqued or that an installation complies with every electrical requirement. It can provide useful condition information, but installation verification still requires the appropriate electrical and mechanical procedures.

📣 Step 3: Explain Thermography to Customers Correctly

Customers often respond well to thermal images because they provide an understandable visual representation of equipment operating conditions. But the image should not be oversold.

A better explanation is: “Electrical problems can produce abnormal heating. Thermal imaging allows us to look for unusual temperature patterns while equipment is operating so developing conditions can be investigated.”

This explains the value of the service without making the inaccurate claim that every electrical failure begins with heat or that every thermal anomaly represents a failure.

💼 Step 4: Add Thermography to Electrical Maintenance Programs

Thermography can become a recurring service when it is incorporated into an electrical maintenance program rather than treated as an isolated camera scan.

Potential customers can include:

• Restaurants and retail facilities.
• Property management companies.
• Commercial and industrial facilities.
• Churches and community buildings.
• Multi-family properties.
• Schools and municipal facilities.
• Manufacturing and process facilities.
• Data centers and other mission-critical operations.

Inspection frequency should be based on the applicable electrical maintenance program, equipment condition, manufacturer recommendations, asset criticality, previous findings, and governing requirements.

NFPA 70B uses equipment condition as part of its maintenance-interval framework. Contractors should not promise that an arbitrary quarterly, semiannual, or annual interval is automatically correct for every facility simply because it produces recurring revenue.

When recurring inspections are appropriate, they can provide valuable historical information and create a legitimate recurring service relationship.

📊 Step 5: Learn to Interpret Thermal Images Correctly

One of the biggest mistakes a new thermographer can make is assuming the camera does the thinking. A temperature displayed on the screen is not automatically a diagnosis.

The Certified Thermal Electrician™ Program teaches electrical contractors to consider:

• How electrical loading produces heat.
• Joule heating and increased connection resistance.
• Normal and abnormal electrical thermal patterns.
• Emissivity and reflected apparent temperature.
• Distance, IFOV, MFOV, focus, and target resolution.
• Viewing angle and environmental conditions.
• Load and operating conditions during the inspection.
• Similar-component comparisons under similar loading.
• Component-to-ambient comparisons.
• NFPA 70B thermography requirements and maintenance context.
• ANSI/NETA MTS suggested-action criteria.
• Professional reporting and documentation.

Training helps contractors understand the limitations of thermography and make better-supported recommendations. No training program or certification can guarantee measurement accuracy, eliminate liability, or replace task-specific electrical qualification and professional judgment.

📥 Step 6: Build a Repeatable Workflow

Once the fundamentals are understood, build thermography into an organized inspection process rather than simply taking thermal pictures whenever a panel happens to be open.

A professional workflow should include:

• Identify the equipment and inspection objective.
• Establish the operating and load condition.
• Determine the safe access method.
• Follow applicable NFPA 70E and facility electrical safety requirements.
• Verify camera setup, focus, emissivity, reflected temperature, distance, and measurement geometry.
• Identify the appropriate comparison method.
• Capture thermal and corresponding visual/context images.
• Record the target temperature, reference temperature, and ΔT when quantitative reporting is used.
• Document limitations that affect measurement confidence.
• Apply the applicable ANSI/NETA MTS suggested-action tier when that framework is being used.
• Develop a professional recommendation based on the complete evidence.

Thermography should only be performed when the electrical task can be completed safely. Do not open energized equipment or alter a safe work method merely because a thermal image is desired.

🌡️ Step 7: Use the Correct Temperature Comparison

A professional thermographic finding is not based simply on how hot something appears. The technician must establish a valid comparison.

Similar Components Under Similar Loading

When equivalent components are operating under sufficiently similar loading and conditions, compare the temperature difference between the component of concern and the appropriate similar reference component.

• 1–3°C ΔT: Possible deficiency — warrants investigation.
• 4–15°C ΔT: Probable deficiency — repair as time permits.
• Greater than 15°C ΔT: Major discrepancy — repair immediately.

Under the CTE™ visual teaching system these correspond to Green, Yellow, and Red. There is no Orange tier for the similar-component comparison.

Component-to-Ambient

When the applicable comparison is between a component and ambient air, use the separate component-to-ambient criteria:

• 1–10°C ΔT: Possible deficiency — warrants investigation.
• 11–20°C ΔT: Probable deficiency — repair as time permits.
• 21–40°C ΔT: Monitor until corrective measures can be accomplished.
• Greater than 40°C ΔT: Major discrepancy — repair immediately.

In the CTE™ teaching system these visually map to Green, Yellow, Orange, and Red. The Celsius values are controlling. Fahrenheit may be displayed as a converted ΔT convenience but should not be treated as an independent second severity scale.

📈 Step 8: Use Trending as Supporting Evidence

Historical thermal data can add valuable context when inspections are performed under sufficiently comparable conditions.

When trending, document factors such as:

• Equipment identification.
• Target location.
• Load and operating condition.
• Ambient conditions.
• Camera and lens configuration.
• Distance and viewing angle.
• Emissivity basis.
• Reflected-temperature treatment.
• Any IR-window or optic used.

Trending can support the professional recommendation, but it does not replace the applicable NETA comparison method and does not independently change the technical tier or CTE™ color.

💰 Step 9: Build Legitimate Revenue Streams

Once the contractor has the training, equipment, procedures, safety program, and reporting process in place, electrical thermography can become an additional billable service.

Possible services include:

• Electrical thermographic inspections.
• Condition-assessment programs.
• Maintenance-agreement thermography.
• Post-repair verification inspections.
• Pre-shutdown condition surveys.
• Customer- or insurer-requested thermal documentation.
• Commercial and industrial electrical maintenance programs.

Pricing and profitability depend on the camera investment, labor, training, travel, reporting time, insurance, calibration or equipment-maintenance costs, local market, inspection scope, and the level of documentation required. Thermography can become a profitable service, but there is no universal promise that the equipment will pay for itself within a particular number of jobs.

🎓 Become a Certified Thermal Electrician™

Electrical thermography can be a valuable extension of an electrical contractor’s existing skills when it is approached as a technical discipline rather than simply a camera service.

The Certified Thermal Electrician™ Program is focused specifically on the application of thermography to electrical systems, including measurement science, electrical loading, comparison methods, NFPA 70B maintenance concepts, ANSI/NETA MTS suggested-action criteria, reporting, and safe inspection practices.

The goal is to help electricians understand not only what the thermal camera shows, but also what the measurement can — and cannot — support.

Learn more or enroll today:
https://thermalelectrician.com

Educational note: Thermographic inspections should be performed within the employer or facility electrical safety program and applicable maintenance requirements. Follow applicable NFPA 70E work practices, NFPA 70B maintenance requirements, ANSI/NETA criteria when used by the maintenance program, manufacturer instructions, equipment ratings, and site-specific procedures.