CPR certification is valid for two years through both the American Heart Association and the American Red Cross, the two largest certifying organizations in the United States. That said, the science on skill retention tells a very different story than the two-year window might suggest, and your actual retraining schedule may depend on your profession, your employer, and how sharp you want your skills to stay.
The Standard Two-Year Certification
Both the American Red Cross and the American Heart Association set certification at a two-year cycle. This applies across the board: standard CPR for the general public, Basic Life Support (BLS) for healthcare professionals, and even specialized certifications like lifeguarding. When your two years are up, you take a renewal course (sometimes labeled “Review” or “Challenge”), which is shorter than the original class, and your certification extends for another two years.
This two-year standard has become the baseline that most employers, licensing boards, and regulatory agencies reference. If your job requires CPR certification, odds are your employer expects you to keep it current on this cycle.
Skills Fade Much Faster Than Certifications
Here’s the uncomfortable reality: research consistently shows that CPR skills degrade well before the two-year mark. A scientific review by the American Red Cross found that the majority of skill deterioration happens within the first year after training. In fact, the review states plainly that “there is no published evidence indicating adequate retention of CPR skills at 2 years.”
The decline starts early. Studies have found that overall competence drops to roughly 44 to 52 percent within three months of training. By six months, laypeople show significant skill reduction, and healthcare professionals, including doctors and nurses, can regress to pre-training levels. One study found that only 14 percent of trainees were judged effective at a six-to-nine-month recheck. The two core physical skills, compression depth and compression rate, are among the first to slip.
This gap between certification length and actual skill retention is well known in the resuscitation science community. It’s the reason OSHA and other bodies recommend more frequent refreshers, even though the card in your wallet stays valid for two years.
What OSHA Recommends for Workplaces
OSHA does not mandate a specific retraining interval for CPR. However, the agency’s Best Practices Guide recommends that instructor-led retraining for life-threatening emergencies, specifically CPR and AED use, should occur at least annually. So while your certification technically lasts two years, OSHA’s guidance to employers is that yearly refresher training is the better standard.
Many employers in high-risk industries (construction, manufacturing, utilities) follow this annual recommendation. If you’re a designated first aid responder at your workplace, check whether your company requires annual refreshers on top of keeping your certification current.
Requirements by Profession
Healthcare Workers
Nurses, doctors, paramedics, and other clinical staff typically need BLS certification renewed every two years. Most hospitals and healthcare systems verify this at hiring and at each renewal cycle. Some facilities go further, running in-house drills or simulation exercises between certification renewals to keep skills from fading.
Teachers and Childcare Workers
State laws vary, but many states tie CPR certification to professional licensing. Virginia, for example, requires every teacher to show proof of CPR certification (including hands-on practice) both for initial licensure and at each renewal. The training must cover emergency first aid, CPR, and AED use, and must follow current national guidelines. If you work in education, check your state’s Department of Education requirements, as they often align with your license renewal cycle.
Lifeguards
Lifeguard certification, including its CPR component, follows the same two-year cycle through the Red Cross. However, most aquatic facilities require regular in-service training throughout the season, often weekly or biweekly skill drills, which effectively refreshes CPR techniques far more frequently than the certification alone would require.
Online vs. In-Person Training
If you need CPR certification for work, an online-only course will not meet the requirement. The American Red Cross offers online CPR classes, but states clearly that online-only formats do not qualify for workplace certification. You need to complete an in-person skills session where an instructor watches you perform compressions and ventilations on a manikin. Hybrid courses (online knowledge portion plus a shorter in-person skills check) are widely accepted and can save time compared to a fully in-person class.
For personal knowledge with no employer requirement, an online-only refresher can still help you review the steps. It just won’t result in a workplace-valid certification card.
How to Keep Your Skills Sharp Between Renewals
Given how quickly skills fade, waiting the full two years to touch a manikin again is not ideal if you’re serious about being able to help in an emergency. A few practical options exist between formal renewals.
- Annual refresher courses. Some training centers offer short, low-cost refresher sessions that don’t reset your certification date but give you hands-on practice.
- Employer-run drills. If your workplace has AEDs on site, ask whether your safety team runs periodic practice sessions.
- Self-directed review. Watching a short refresher video every few months and mentally rehearsing the steps (check responsiveness, call 911, compress hard and fast at the center of the chest, use an AED when available) takes minutes and helps reinforce the sequence.
International resuscitation guidelines are now reviewed and updated annually by ILCOR, the global body that coordinates resuscitation science. This means best practices can shift between your certification cycles. A mid-cycle refresher helps you stay current with any changes, not just maintain the physical skills.
The bottom line: your card says two years, the science says skills fade within months, and OSHA says annual retraining is the smart move. If CPR is part of your job, plan for yearly practice. If it’s a personal skill you hope to never need, a quick refresher at the one-year mark could make the difference between freezing and acting if the moment comes.