Key points
- TESDA's Packaged Air Conditioner Unit Servicing course on e-TESDA is free.
- It's self-paced and open year-round, with no enrollment deadline.
- Covers installation, troubleshooting and maintenance of packaged aircon units.
- Finishing gives a Certificate of Completion, not a DOMRAC NC II.
- The NC II needs a separate assessment at a TESDA-accredited center.
Want to learn how aircon units are installed, repaired and maintained? TESDA offers a free online course called Packaged Air Conditioner Unit Servicing under its Refrigeration and Airconditioning Servicing (DOMRAC) category on the TESDA Online Program (e-TESDA). It is open to anyone with an email address and internet access, it is self-paced, and there is no enrollment deadline. You can sign up any time.
Last updated: October 11, 2026. Course details are from the e-TESDA catalog as reported by TESDA Online; enroll through e-TESDA (e-tesda.gov.ph).
Who this aircon servicing course is for
- Beginners curious about how packaged aircon units (PACU) work
- Aspiring aircon technicians who want a head start before hands-on training
- Electricians and maintenance staff who want to add RAC servicing skills
- Anyone planning to take the RAC Servicing (DOMRAC) NC II assessment later
- OFW hopefuls looking at HVAC and refrigeration jobs
What the course covers
The course focuses on packaged air conditioner units, both the indoor and outdoor parts. It covers installation, troubleshooting and regular maintenance. It is one part of the RAC Servicing (DOMRAC) NC II qualification, not the whole qualification.
Unit 1: Installing a PACU
Eight lessons take you from placing the units to testing the finished setup:
- Outdoor unit installation
- Indoor unit installation
- Piping installation
- Electrical installation
- Evacuation process
- Charging refrigerants
- Leak test
- PACU testing
Unit 2: Troubleshooting and maintenance
Two lessons on finding problems and keeping the unit in good shape:
- PACU troubleshooting
- PACU maintenance
Why take it online
- Free. No tuition for the learning materials.
- Self-paced. Study whenever you have time.
- Any device. Works on a smartphone, laptop or desktop with internet.
- Certificate. You get a Certificate of Completion once you finish the course requirements.
Aircon work involves electricity and refrigerants, so the online lessons are best treated as theory. Get supervised hands-on practice before doing actual servicing jobs.
How to enroll in the DOMRAC course
- Go to e-tesda.gov.ph.
- Sign up for a new account using an email address you actively use.
- Open the confirmation email and click the link to activate your account. Check Spam or Promotions if you cannot find it.
- Log in and complete your profile.
- Open the Refrigeration and Airconditioning Servicing (DOMRAC) category and choose Packaged Air Conditioner Unit Servicing.
- Follow the enrollment steps on the course page, then go through the lessons and activities.
What you need
- An active email address
- A smartphone, laptop or computer
- A stable internet connection
- Regular study time and a notebook for notes
Deadline
There is no application window. e-TESDA courses are open year-round and self-paced, so you can enroll and start any time.
Certificate of Completion vs. NC II
Finishing the online course gives you a Certificate of Completion, not a National Certificate. To get RAC Servicing (DOMRAC) NC II, you need to pass a separate competency assessment at a TESDA-accredited assessment center. Because this course covers only part of the qualification, ask TESDA or an accredited center what else you need to prepare for the full assessment.
Common problems
- No confirmation email. Check Spam, Junk and Promotions, and confirm you typed your email correctly.
- Cannot find the course. Look under the DOMRAC category, or search for “Packaged Air Conditioner”.
- Expecting an NC II after finishing. The online course gives a Certificate of Completion only. The NC II needs an in-person assessment.
- Lessons feel too technical. Take notes, rewatch lessons, and pair the course with hands-on training at a TESDA center.
Questions people ask
Is the TESDA aircon servicing course free?
Yes. The e-TESDA online course and its learning materials are free.
Can I finish it using only my phone?
Yes. Any internet-connected smartphone, laptop or computer works.
Will I become a licensed aircon technician after this course?
No. You get a Certificate of Completion. For the RAC Servicing (DOMRAC) NC II, you must pass a competency assessment at a TESDA-accredited assessment center.
Is there a deadline to enroll?
No. You can enroll any time and learn at your own pace.
Are there other free TESDA online courses?
Yes. See our full list of free TESDA online courses. If you prefer classroom training with a trainer, check these free face-to-face TESDA scholarships in Quezon City.
Source
Based on: TESDA Online, “Free TESDA Refrigeration and Airconditioning Servicing (DOMRAC): How to Enroll Online”. Official enrollment site: https://e-tesda.gov.ph/.
Pilipinas Guide is not TESDA and does not accept applications.
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