Quick answer
Buy the ZOLL AED 3 if children could ever be patients, or if you manage AEDs across multiple sites. Its Uni-padz treats adults and children with one electrode set, and its WiFi reports device status to a program dashboard. Buy the ZOLL AED Plus if the site is adult-only and budget decides, because it is cheaper new and about $875 recertified. The catch most buyers miss: the AED Plus needs separate pediatric pads that expire every 2 years, which makes it the more expensive device to own once children are in scope.These two ZOLLs look far apart on a shelf and much closer on a spec sheet. Both give real-time CPR coaching, both are IP55, both use a 5-year battery, and both come from the same manufacturer. What genuinely separates them is how they display feedback, how they handle children, and whether they report to a program dashboard. This page compares them against ZOLL’s own technical specifications, prices both new and recertified, and runs the pediatric cost math that no other comparison publishes. For the full single-model detail, see our ZOLL AED 3 review and ZOLL AED Plus review.
ZOLL AED 3
Wins on pediatric, display and connectivity
- Color touchscreen with CPR Dashboard
- Uni-padz covers adults and children
- WiFi program management
- Lighter at 5.5 lbs
- 8-year warranty (6 plus 2 with registration)
ZOLL AED Plus
Wins on price, adult-only sites
- Same Real CPR Help coaching
- Cheapest consumables for adult-only use
- Batteries are off-the-shelf Type 123A
- About $875 recertified
- 7-year warranty (5 plus 2 with registration)
Side by side, verified against ZOLL specifications
Quick answer
The real differences are the touchscreen, pediatric handling, WiFi, weight and warranty. Real CPR Help and the IP55 rating are identical on both, despite what several comparison charts claim.
| Specification | ZOLL AED 3 | ZOLL AED Plus |
|---|---|---|
| Real CPR Help (depth and rate) | Yes | Yes, identical |
| CPR feedback display | Color touchscreen CPR Dashboard, shows depth and rate visually | Optional LCD with moving bar, audio-led |
| Pediatric handling | Built into Uni-padz, no separate pad needed | Requires Pedi-padz II, sold separately |
| Connectivity | WiFi 802.11 a/b/g/n plus USB | None standard |
| Weight | 5.5 lbs (2.5 kg) | 6.7 lbs (3.1 kg) |
| Ingress rating | IP55 | IP55, identical |
| Battery | Sealed lithium, 5-year standby, 300 shocks | 10 × Type 123A lithium, 5-year standby |
| Pads | CPR Uni-padz, 5-year shelf life | CPR-D-padz one-piece, 5-year shelf life |
| Warranty (new) | 8 years (6 plus 2 with registration) | 7 years (5 plus 2 with registration) |
| Adult energy | 120 / 150 / 200 J | 120 / 150 / 200 J |
The pediatric cost trap
Quick answer
For adult-only sites the ZOLL AED Plus is cheaper to own. Add pediatric coverage and that reverses. Pedi-padz II cost about $155 and expire every 2 years, against Uni-padz on the AED 3 which cover children already and last 5 years.
Here is the analysis missing from every comparison of these two devices. The AED Plus wins on running cost right up until the moment a child could be a patient, and then it loses decisively, because its pediatric pads are both an extra purchase and the shortest-lived consumable in either device.
| 10-year consumable cost | ZOLL AED 3 | ZOLL AED Plus |
|---|---|---|
| Battery replacements (5-year life) | 1 × $201 | 1 × $100 |
| Adult pad replacements (5-year life) | 1 × $234 | 1 × $230 |
| Pediatric pads (2-year life) | Included in Uni-padz | 5 × $155 = $775 |
| Total, adult-only site | ~$435 | ~$330 |
| Total, pediatric coverage required | ~$435 | ~$1,105 |
Assumptions: 10-year window, replacement at the end of each stated shelf life, Pedi-padz II purchased separately at the start and replaced every 2 years, prices verified from authorized listings in August 2026. The conclusion is clean. If your site is adult-only, the AED Plus saves about $105 in consumables over a decade on top of a lower purchase price. If children could be patients, whether that is a school, a gym with a youth program, a church, or a restaurant, the AED 3 costs roughly $670 less to run over the same period and removes the risk of a rescuer reaching for a pediatric pad that expired. Model your own case in our AED Cost Calculator.
What the price difference actually is
Quick answer
New, the ZOLL AED 3 runs about $2,307 to $2,399 and the AED Plus about $1,832 to $2,082. Recertified, the AED 3 is about $1,150 to $1,295 and the AED Plus is $875. The recertified gap is smaller than the new gap.
Prices verified live from authorized listings on 13 August 2026. Note that ZOLL AED 3 pricing moves, so confirm on the product page before you buy:
| Model | New | Recertified | Recertified warranty |
|---|---|---|---|
| ZOLL AED 3 | ~$2,307 to $2,399 | $1,150 to $1,295 | 3-year |
| ZOLL AED Plus | ~$1,832 to $2,082 | $875 | 3-year |
Put the two tables together and the decision resolves itself. For an adult-only site on a budget, the recertified AED Plus at $875 with the lowest running cost is hard to beat. For a site where children are in scope, the recertified AED 3 costs roughly $275 to $420 more upfront and returns that within a few years through pediatric pads you never have to buy. See the recertified ZOLL AED Plus review and recertified ZOLL AED 3 review, or the whole category in our recertified AED guide.
Buy the right ZOLL, recertified
Both recertified with a documented 9-point analyzer test, new genuine battery and pads, a 3-year warranty, and free shipping. AED Plus from $875, AED 3 from $1,150.
See the ZOLL AED Plus →
See the ZOLL AED 3 →
What other comparisons get wrong
Quick answer
Three errors repeat across published ZOLL comparisons: wrong weights, a claim that the AED 3 battery lasts 7 years, and IP55 presented as an AED 3 advantage. All three are contradicted by ZOLL’s own specification sheets.
| Common claim | Correct, per ZOLL specifications |
|---|---|
| “AED Plus 8.6 lbs vs AED 3 6.7 lbs” | The AED Plus is 6.7 lbs and the AED 3 is 5.5 lbs. Both figures in that claim are wrong and the gap is misstated |
| “AED 3 battery and pads last 7 years” | Both are 5 years. The 5-year figure is what ZOLL publishes for the AED 3 battery and Uni-padz |
| “IP55 is an AED 3 advantage” | Both devices are IP55. It is not a differentiator between them |
| “Real CPR Help is the AED 3 upgrade” | Real CPR Help is on both. The AED 3 upgrade is the CPR Dashboard that displays depth and rate on the touchscreen |
Which should you buy?
| If your situation is… | Buy | Why |
|---|---|---|
| School, youth sports, church, or any site with children | ZOLL AED 3 | Uni-padz covers all ages, no expiring pediatric pad to track or buy |
| Multiple sites, one program manager | ZOLL AED 3 | WiFi reports device readiness centrally |
| Adult-only workplace, budget decides | ZOLL AED Plus | Cheaper new, $875 recertified, lowest adult-only running cost |
| Responders benefit from seeing feedback, not just hearing it | ZOLL AED 3 | CPR Dashboard shows depth and rate on the touchscreen |
| You want the longest warranty | ZOLL AED 3 | 8 years against 7, both including registration |
| Lowest possible total spend | ZOLL AED Plus | Recertified at $875 with roughly $330 in 10-year consumables |
Comparing outside the ZOLL range? See how the AED Plus stacks against Philips in our ZOLL AED Plus vs Philips OnSite comparison, run the Find Your Perfect AED quiz, or check every model on the AED comparison tool.
Both are FDA-approved
Sudden cardiac arrest kills more than 356,000 people outside hospitals each year in the US, and survival falls roughly 10 percent for every minute without defibrillation (American Heart Association). Both ZOLL models are Class III devices approved through FDA Premarket Approval, so neither choice is a compliance compromise. Placement and program upkeep matter as much as the device: OSHA response-time guidance applies to both, and requirements vary by location, so check our AED laws by state guide. Size site coverage with the AED Quantity Calculator.
ZOLL AED 3 vs AED Plus FAQ
What is the difference between the ZOLL AED 3 and the ZOLL AED Plus?
The AED 3 adds a color touchscreen that shows CPR depth and rate visually, Uni-padz that treat both adults and children with one electrode, and WiFi program management. The AED Plus has the same Real CPR Help coaching but no touchscreen, and it needs separate Pedi-padz II for children.
Should I buy the ZOLL AED 3 or the ZOLL AED Plus?
The AED 3 if children could be patients or you manage AEDs across sites. The AED Plus if the site is adult-only and budget decides, since it is cheaper new and about $875 recertified.
Do both have Real CPR Help?
Yes, identically. The difference is that the AED 3 also displays depth and rate on a CPR Dashboard on its touchscreen, while the AED Plus delivers the same feedback through audio and a moving bar.
Which is cheaper if children may need treatment?
The ZOLL AED 3. Uni-padz covers all ages with a 5-year life. The AED Plus needs Pedi-padz II at about $155 that expire every 2 years, which over 10 years makes it roughly $670 more expensive to run.
Are both weather resistant?
Yes, equally. Both are rated IP55. Charts presenting IP55 as an AED 3 advantage are wrong.
Which is lighter?
The ZOLL AED 3, at 5.5 lbs against 6.7 lbs for the AED Plus.
The one-line decision
Children in scope, or AEDs across multiple sites, buy the ZOLL AED 3. Adult-only site and budget decides, buy the ZOLL AED Plus recertified at $875. The pediatric pads, not the sticker price, are what actually separate these two over a decade.
References
- ZOLL Medical, AED 3 technical specification sheet (weight, IP55, touchscreen, Uni-padz energy settings, WiFi, 5-year battery).
- ZOLL Medical, AED Plus technical specification sheet (weight, IP55, Type 123A battery, CPR-D-padz, Pedi-padz II threshold).
- American Heart Association, Cardiac Arrest statistics and Chain of Survival, 2024.
- US FDA, Automated External Defibrillators (AEDs) and Premarket Approval.
- OSHA, Cardiac Arrest and AEDs in the workplace.
- New, recertified and consumable pricing verified live from authorized listings on 13 August 2026.
Updated August 2026 · Reviewed by the AED Brand Review Editorial Team · Prices verified live and may change. Confirm current pricing on the linked product pages before purchase.
