Dedika is a platform where you learn by doing—like creating a business proposal, becoming a nail technician, or mastering a new tool. No matter your goal, the best content on the topic already exists. But it’s often in another language, expensive, scattered online, lacking hands-on activities, or part of a course that’s too long for busy people. That’s why Dedika has its own method: we find the best material wherever it is, organize what fits your goals, review it with experts who are available to answer your questions, and create practical exercises so you can learn by doing. You’re at the center of your learning journey and know yourself best: choose the content and course length, whether you want to study online or offline, and in the format you prefer—video, text, audio, or summary. Learn your way, with only what makes sense for you. Here, every moment you dedicate counts more, and you reach what matters faster.

Our courses include a summary at the end of each chapter, which you can download as a PDF and print.

More than 2 million learners worldwide

Present in more than 180 countries

Certificate valid in your country

Home Page

...

Dehumidifier Technician Course

All courses

Business and Economics

Home Appliances

Dehumidifier Technician Course

For all levels

Dehumidifier Technician Course

Name: Dehumidifier Technician Course
Price: 2994 PHP

Master every aspect of dehumidifier service, from reading psychrometric charts to replacing compressors and commissioning commercial systems. This course gives you the hands-on technical knowledge to install, maintain, troubleshoot, and repair residential and industrial dehumidification equipment. Build the skills employers and clients demand and advance your career in the HVAC and restoration trades.

Dedika for businesses

What you will learn:

You will learn how moisture behaves in air and how to calculate the loads that drive equipment selection. You will identify refrigerant-based, desiccant, and hybrid dehumidifier systems and understand every major internal component. The course covers safe refrigerant handling, electrical safety, and proper use of diagnostic instruments. You will follow step-by-step installation and commissioning procedures for both residential and commercial applications. Preventive maintenance schedules, fault diagnosis methods, and repair techniques for fans, control boards, and compressors are all included. Specialized environments such as indoor pools, cold storage, and data centers are also addressed.

How you study in a practical way Dehumidifier Technician Course

How you practice Dehumidifier Technician Course

For companies who want to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

Click here

Course content

8 Chapters • 39 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Fundamentals of Humidity and Air

Lesson 1 • Properties of Moist Air
Covers absolute humidity, relative humidity, and dew point as measurable air properties. Establishes the physical basis for all dehumidification decisions.
Lesson 2 • Effects of Excess Humidity
Examines structural, health, and equipment damage caused by uncontrolled moisture. Motivates the urgency of proper dehumidification in various settings.
Lesson 3 • Psychrometric Chart Interpretation
Teaches reading and plotting conditions on a psychrometric chart. Connects chart data to real-world moisture load assessments.
Lesson 4 • Moisture Sources and Loads
Identifies internal and external sources of moisture that drive humidity levels. Prepares technicians to quantify moisture loads before equipment selection.

Chapter 2See details

Dehumidifier Types and Components

Lesson 1 • Refrigerant-Based Dehumidifiers
Explains the refrigeration cycle as applied to moisture removal from air. Links compressor, evaporator, and condenser roles to dehumidification output.
Lesson 2 • Equipment Ratings and Specifications
Explains capacity ratings, efficiency metrics, and performance standards used in the industry. Enables technicians to read and compare equipment specification sheets accurately.
Lesson 3 • Key Internal Components
Details fans, filters, drain systems, controls, and housings common to all dehumidifier types. Provides component-level knowledge needed for maintenance and repair.
Lesson 4 • Desiccant Dehumidifiers
Covers adsorption-based moisture removal using solid and liquid desiccants. Distinguishes desiccant performance from refrigerant-based units at low temperatures.
Lesson 5 • Ventilation and Hybrid Systems
Introduces energy-recovery ventilators and hybrid units combining refrigerant and desiccant stages. Shows how system integration expands dehumidification capability.

Chapter 3See details

Tools, Instruments, and Safety

Lesson 1 • Refrigerant Handling and Safety
Covers safe refrigerant recovery, storage, and handling per environmental regulations. Technicians understand certification requirements and proper disposal procedures.
Lesson 2 • Hand Tools and Service Equipment
Identifies wrenches, flaring tools, vacuum pumps, and recovery machines used in service. Proper tool selection prevents equipment damage and ensures quality repairs.
Lesson 3 • Personal Protective Equipment
Specifies PPE requirements for chemical, electrical, and mechanical hazards in service work. Correct PPE selection reduces injury risk across all service scenarios.
Lesson 4 • Measurement and Diagnostic Instruments
Covers hygrometers, manometers, multimeters, and refrigerant gauges used in field diagnostics. Accurate instrument use is the foundation of reliable troubleshooting.
Lesson 5 • Electrical Safety Practices
Establishes lockout/tagout procedures and safe voltage testing practices. Prevents electrical injury during dehumidifier inspection and repair tasks.

Chapter 4See details

Installation Principles and Procedures

Lesson 1 • Site Assessment and Planning
Teaches moisture load calculation and site survey techniques before installation begins. Accurate assessment prevents undersizing and ensures system effectiveness.
Lesson 2 • Condensate Management Systems
Explains gravity drain, condensate pump, and drain line installation options. Proper drainage prevents water damage and biological growth in drain pans.
Lesson 3 • Commissioning and Startup
Guides technicians through first-start checks, setpoint configuration, and performance verification. Commissioning confirms the installation meets design and safety requirements.
Lesson 4 • Electrical Connections and Wiring
Details power supply requirements, circuit sizing, and control wiring for dehumidifiers. Correct electrical installation prevents tripped breakers and equipment damage.
Lesson 5 • Mechanical Installation Steps
Covers mounting, leveling, vibration isolation, and airflow clearance requirements. Proper mechanical setup extends equipment life and reduces noise complaints.

Chapter 5See details

Preventive Maintenance Programs

Lesson 1 • Drain System Maintenance
Details cleaning drain pans, flushing lines, and testing condensate pumps. Neglected drains are a leading cause of water damage and mold growth.
Lesson 2 • Mechanical and Electrical Checks
Inspects fan motors, belts, bearings, electrical connections, and control components. Early detection of wear prevents costly breakdowns and safety hazards.
Lesson 3 • Maintenance Scheduling and Records
Establishes service intervals based on usage, environment, and manufacturer guidance. Accurate records support warranty claims and reveal recurring failure patterns.
Lesson 4 • Filter and Coil Maintenance
Covers filter replacement, coil cleaning, and fin straightening procedures. Clean filters and coils maintain rated airflow and moisture removal efficiency.
Lesson 5 • Refrigerant System Inspection
Checks refrigerant charge, operating pressures, and leak indicators during maintenance visits. Maintaining correct charge preserves efficiency and prevents compressor damage.

Chapter 6See details

Troubleshooting and Fault Diagnosis

Lesson 1 • Diagnostic Methodology
Introduces a structured fault-isolation process using symptom analysis and test data. A repeatable method reduces diagnostic time and prevents misdiagnosis.
Lesson 2 • Refrigerant System Faults
Diagnoses low charge, overcharge, restriction, and compressor failure using pressure data. Refrigerant faults are identified by comparing measured values to expected operating conditions.
Lesson 3 • Control and Sensor Faults
Tests humidistats, thermistors, pressure switches, and control boards for accuracy. Faulty sensors cause incorrect operation even when mechanical components are healthy.
Lesson 4 • Airflow and Mechanical Faults
Identifies blocked filters, failed fans, iced coils, and duct leaks as airflow problems. Airflow faults often mimic refrigerant issues and must be ruled out first.
Lesson 5 • Electrical Fault Diagnosis
Covers testing capacitors, contactors, motors, control boards, and wiring for faults. Electrical diagnosis requires safe voltage measurement and component substitution skills.

Chapter 7See details

Repair Techniques and Component Replacement

Lesson 1 • Control Board and Sensor Replacement
Guides technicians through safe board removal, wiring documentation, and sensor swaps. Correct component identification prevents ordering errors and repeat failures.
Lesson 2 • Compressor Replacement
Details compressor removal, refrigerant recovery, brazing, evacuation, and recharge steps. Compressor replacement is the most complex refrigerant-side repair a technician performs.
Lesson 3 • Desiccant Wheel and Drive Repair
Addresses desiccant wheel removal, cleaning, reactivation, and drive motor replacement. Desiccant system repairs require understanding of wheel geometry and regeneration airflow.
Lesson 4 • Refrigerant Leak Repair
Covers locating leaks, brazing or sealing repairs, and verifying leak-free status. Unrepaired leaks cause repeat failures and violate environmental regulations.
Lesson 5 • Fan Motor and Blower Repair
Covers motor removal, shaft alignment, capacitor replacement, and blower wheel cleaning. Fan system repairs restore rated airflow and reduce energy consumption.

Chapter 8See details

Commercial and Industrial Applications

Lesson 1 • Commercial Load Calculations
Extends residential load methods to large spaces with complex moisture sources. Accurate commercial calculations prevent costly undersizing in critical environments.
Lesson 2 • System Integration and Controls
Explains integration of dehumidifiers with HVAC, BAS, and remote monitoring platforms. Integrated controls optimize energy use and enable proactive fault detection.
Lesson 3 • Industrial Dehumidification Systems
Covers large desiccant units, chilled-water coil systems, and central plant configurations. Industrial systems require integration with building automation and process controls.
Lesson 4 • Specialized Application Environments
Addresses dehumidification in pools, cold storage, museums, and pharmaceutical facilities. Each environment has unique humidity targets and equipment selection criteria.
Lesson 5 • Commissioning Large Systems
Guides technicians through functional testing, balancing, and documentation for large installations. Thorough commissioning ensures performance guarantees are met at handover.

Certification

Your valid completion certificate

This course is for you:

HVAC technician: wants to add dehumidification as a billable specialty service.
Water damage restoration worker: needs structured equipment knowledge beyond basic operation.
Building maintenance technician: manages humidity problems in commercial or institutional facilities.
Career changer: entering the trades and targeting a focused, growing technical niche.
Refrigeration mechanic: looking to expand credentials into adjacent humidity control markets.
Facilities manager: wants technical depth to oversee contractors and evaluate service quality.

What our students say

Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...