The PAX FOUR is the newest device in PAX’s dry herb line: a portable vaporizer with a hybrid conduction-and-convection heater, four preset heat modes PAX calls petals, a redesigned oven and lid, and USB-C charging. It holds about 0.3 g, will not take the PAX Concentrate Insert, and sits between the PAX MINI and PAX FLOW in output [1].
What Is the PAX FOUR, and What Changed From Earlier PAX Models?
PAX has shipped several generations of the same core dry herb device, so the useful question is what actually changed. The short answer is the heater, the oven, the charging port, and the mode indicators [2].
The biggest change is the hybrid heater. Earlier PAX models relied on conduction, where the oven walls heat the material directly. The PAX FOUR adds convection on top of that, so hot air moves through the load as well as around it [1]. PAX describes the heating system as rebuilt rather than adjusted, and places the device as the next step in its core dry herb line [2].
PAX also publishes an output figure of its own: up to 50% more vapor output than the PAX 2, PAX 3, PAX PLUS, PAX MINI, and PAX FLOW, measured by PAX and presented as a manufacturer comparison [2]. An independent review does describe more visible output and longer-lasting flavor than the earlier conduction-only PAX models, but it does not verify the percentage and calls the device an evolution rather than a revolution [10].
Charging changed too. The PAX FOUR moves to USB-C, replacing the proprietary magnetic charger used on earlier models [2], so there is one less proprietary cable to keep track of. For the wider category, browse the full Vaporizers category; if a plug-in desktop unit is what you had in mind, What Is a Volcano Vaporizer and How Does It Work? is the place to start.
- Heater: a hybrid conduction-plus-convection design, replacing the conduction-only approach of earlier PAX models.
- Mode indicators: four petal-shaped lights, each one a preset heat mode, backed by patented temperature control and auto shutoff.
- Oven and lid: a redesigned oven with a refined lid intended to increase airflow, plus a new shape meant to make loading easier.
- Charging: USB-C in place of the earlier proprietary magnetic charger.
- Output claim: up to 50% more vapor output than the PAX 2, PAX 3, PAX PLUS, PAX MINI, and PAX FLOW, per PAX rather than an outside test.
- Concentrates: not supported. PAX states the PAX FOUR is not compatible with the PAX Concentrate Insert.
How Does the PAX FOUR Compare With the PAX MINI, PAX PLUS, and PAX FLOW?
PAX splits its dry herb lineup with a short line: the PAX MINI for simplicity, the PAX FLOW for flavor, and the PAX FOUR for power [2]. That framing is useful because the devices are not stacked in a straight line. Each one gives up something the others keep. If the format itself is new to you, What Is a Vaporizer and How Does It Work? covers the basics, and What Is a Dry Herb Vaporizer and How Does It Work? explains what a dry herb device actually does.
Size is the first real difference. The PAX MINI is the compact option at 89 g, with four heat modes, one-button operation, and a larger oven that accepts two pack sizes [4]. The PAX FOUR is a bigger device at 125 g in a light aluminum body, listed by a reviewer at 4.25 in tall, 1.42 in wide, and 1.06 in deep [10]. It is still pocketable, but it is not the smallest thing PAX makes.
Heat-up is the difference you notice every session. An independent reviewer measured about 1 minute 22 seconds from a cold start on the PAX FOUR, slower as the battery drained, and describes it as the slowest heat-up in the current lineup. The same review puts the PAX MINI at roughly 20 seconds and the PAX FLOW at about 40 seconds [10]. PAX does not publish a heat-up time for the PAX FOUR, so those numbers belong to the reviewer.
Concentrates decide a lot of purchases. The PAX PLUS is the dual-use model: it accepts the Concentrate Insert and ships with 0.5 g standard and 0.25 g half-pack oven lids alongside four Experience Modes named Stealth, Efficiency, Flavor, and Boost [5]. The PAX FOUR cannot do that, and PAX states it is not compatible with the Concentrate Insert [1]. The mode sets are also not the same feature under another name: PAX calls the FOUR’s presets petals and the PLUS’s presets Experience Modes.
Pricing needs a date attached, because it moves. During research PAX listed the PAX FOUR at $225 with a $180 promotional price showing in the same session [1], while Treehouse Lifestyle listed the Pax Four Vaporizer at $300 in Onyx and Greenstone, with PAX Mini 2 listings at $149.99 and $180 [12]. An earlier independent review discussed a $250 price and argued the device would be easier to justify near $200 [10]. Confirm the figure on the day you buy rather than trusting any single number here.
The table sets the four devices side by side. Where a cell says not published, PAX does not list that figure and the review we used did not measure it. For the wider brand picture, Which PAX vaporizer is worth buying for your needs? compares the rest of the family, and How Do You Choose the Right Portable Vaporizer? sets out the questions that narrow the field.
- PAX MINI: PAX’s simplicity pick. One button, four heat modes, and a larger oven that takes a full pack or a half pack [4].
- PAX PLUS: the only model here that takes the Concentrate Insert, and the only one with a 10-year limited warranty [5].
- PAX FOUR: four petals, a redesigned oven, no concentrate support, and PAX’s power positioning [2].
- PAX FLOW: five heat modes including a Bong Mode, a wider airpath, and roughly 40 seconds to heat [10].
- Heat-up, measured by one reviewer: about 20 seconds on the MINI, about 40 on the FLOW, and about 1 minute 22 seconds on the FOUR [10].
- Warranty: 10 years on the PLUS, against 2 years plus 1 more with registration on the FOUR [5].
- Price, dated: $225 list and $180 promotional on pax.com during research, $300 at Treehouse Lifestyle for both colorways, and a $250 figure discussed in an earlier review [12].
| Device | Weight | Heat modes | Concentrates | Heat-up | Warranty |
|---|---|---|---|---|---|
| PAX MINI | 89 g | 4 | Dry herb only | About 20 sec | 2 years, 3 in listed states |
| PAX PLUS | Not published | 4 Experience Modes | Yes, with the insert | Not published | 10 years |
| PAX FOUR | 125 g | 4 petals | Dry herb only | About 1 min 22 sec | 2 years, plus 1 on registration |
| PAX FLOW | Not published | 5 incl. Bong Mode | Not published | About 40 sec | Not published |
Who Is the PAX FOUR a Good Fit For, and Who Should Choose Something Else?
Fit is where a $300 device either earns its place or does not. The honest answer here comes from a reviewer judgment rather than a measurement, so read it as one. An independent review recommends the PAX FOUR for light to medium users who want more output from a PAX session while keeping the brand’s slow, steady draw [10].
The same review is clear about who should look elsewhere. It says the PAX FOUR is not for heavy users who want wide-open, aggressive draws, where the PAX FLOW fits better, and not for minimalists chasing the smallest possible device, where the PAX MINI fits better [10]. It also says the device is not a revolution over earlier PAX models, which matters if you already own one.
Two lineup facts decide more purchases than any specification. First, this model will not run concentrates, so anyone who wants both formats is shopping for the PAX PLUS [5]. Second, warranty length varies sharply: the PAX PLUS carries a 10-year limited warranty, while the PAX FOUR carries a 2-year term that extends by one year with registration [1].
A simple way to place yourself is to answer three questions. How much material do you want to load at once? Do you ever want concentrates? How long do you expect to keep the device before replacing it? The answers usually point at one model without much debate.
- Good fit: light to medium users who want more output from a PAX session while keeping a slow, steady draw, according to an independent review.
- Good fit: buyers who want a full oven and preset modes, and have no interest in concentrates.
- Good fit: anyone stepping up from an earlier conduction-only PAX who wants the newer heater and USB-C charging.
- Choose the PAX MINI instead if size and weight matter most; it is 89 g, heats in about 20 seconds, and takes two pack sizes [4].
- Choose the PAX FLOW instead if you want wide-open draws and five heat modes including a Bong Mode.
- Choose the PAX PLUS instead if you want concentrate support or the 10-year limited warranty [5].
How Do You Load the PAX FOUR and Pick a Heat Mode?
Loading is the part of ownership you repeat most, and PAX’s guidance for this model is short. Start with fresh material, grind to a medium-fine consistency, fill the oven completely, and tamp lightly until it is full at roughly 0.3 g [6]. An independent reviewer settles on the same 0.3 g load rather than a tightly packed half-gram, so the figure holds from both directions [10].
The four modes are preset, and PAX does not publish a separate temperature for each one on the product page [1]. An independent review lists them as 374 F / 190 C on the first petal, 392 F / 200 C on the second, 410 F / 210 C on the third, and 428 F / 220 C on the fourth [10]. Read those as reviewer-reported figures rather than manufacturer specifications. PAX’s own advice is to open on a lower mode and work upward through a session, leaving time between draws instead of pulling harder [6].
Mouthpieces are part of the tuning. The flat mouthpiece is fitted out of the box, and PAX recommends it when you want to slow the airflow; the raised mouthpiece ships in the same box if you want a different draw [13].
One behaviour is worth knowing before your first session, because it is quicker than earlier PAX models. An independent review documents that after about 30 seconds without motion the petals turn blue, the oven begins cooling, and the device shuts off around the 60-second mark, where earlier models waited roughly two minutes [10]. The reviewer calls it noticeably quicker and sometimes rushed during longer or group sessions.
- Start with fresh material. Material that has dried out behaves differently in the oven, so load from a fresh supply [6].
- Grind to a medium-fine consistency so the load packs evenly and fills the oven without gaps.
- Fill the oven completely, then tamp lightly until it is level and full at roughly 0.3 g.
- Choose a lower heat mode to open the session rather than starting on the highest petal.
- Step up through the modes as the session goes, giving the load time at each setting.
- Leave time between draws instead of pulling harder when output drops.
- Swap to the flat mouthpiece when you want a slower draw, since PAX recommends it for that purpose [13].
How Long Does the Battery Last, and How Long Does Charging Take?
Runtime is where the manufacturer rating and measured experience diverge, and both are worth knowing. PAX rates the PAX FOUR at up to 5 sessions or 50 minutes of run time per full charge over USB-C [1]. An independent reviewer averaged about 45 minutes at mode 3, which worked out to roughly five 10-minute sessions [10].
Charging is slower than the runtime number suggests. The same review measured about 25% after 23 minutes, 50% at around 45 minutes, and a full charge at about 70 minutes [10]. PAX’s own troubleshooting page uses a charge that is not complete within about 2 hours as the trigger for a check [7].
If a charge is running long, PAX’s order of checks is power source first, then cable, then connection. The recommended source is rated 5-9 V DC at 2.5 A minimum and 3 A maximum, such as a computer, a power hub, or a suitable power supply [7]. Charge times vary with the cable, the power source, and any adapters in the chain.
Generic rechargeable-device care applies here too. CPSC recommends products that comply with applicable voluntary standards, and treating the cells, battery pack, charger, and device as one tested system rather than mixing parts [11].
- Rated run time: up to 5 sessions or 50 minutes per full charge, per PAX [1].
- Measured run time: about 45 minutes at mode 3, or roughly five 10-minute sessions, per an independent reviewer [10].
- Charge curve: about 25% in 23 minutes, 50% in about 45 minutes, and full in about 70 minutes.
- Check trigger: PAX uses a charge that is not complete in about 2 hours as the point to troubleshoot [7].
- Power source: 5-9 V DC at 2.5 A minimum and 3 A maximum, such as a computer or a suitable power supply.
- Variables: the cable, the power source, and any adapters all change how long a charge takes.
What Comes in the Box, and What Do You Need to Buy Separately?
The box list is short, and knowing it up front prevents a second order on day one. The PAX FOUR ships with the device, a flat mouthpiece already installed, a raised mouthpiece, a USB-C cable, a multi-tool, 3 oven screens, a wire brush, and a user manual [1].
An independent reviewer’s box list matches on every item: the device, both mouthpieces, the cable, the multi-tool, the screens, and the brush [10]. Two lists that agree are reassuring when you are relying on a spec sheet before the parcel arrives.
What is not in the box matters just as much. PAX states the PAX FOUR is not compatible with the PAX Concentrate Insert, so there is no add-on that turns this into a dual-use device [1]. Buyers sometimes assume every PAX accessory fits every PAX model, and that assumption costs money here.
For Treehouse Lifestyle orders, both the manufacturer and the retailer require buyers to confirm they are 21 or older [12]. Treehouse Lifestyle listed the Pax Four Vaporizer at $300 in Onyx and Greenstone when this guide was written, and offers free shipping on orders $150+ [12].
- The PAX FOUR device itself, in Onyx or Greenstone.
- A flat mouthpiece, installed on the device out of the box.
- A raised mouthpiece, so you can switch without buying anything extra.
- A USB-C charging cable.
- A multi-tool for loading and light upkeep.
- 3 oven screens, which are the parts that wear first.
- A wire brush for the oven and vapor path.
- A user manual covering the modes, the lights, and the reset.
What Maintenance Does the PAX FOUR Need, and What Do Its Lights Tell You?
Maintenance on the PAX FOUR is mostly about the vapor pathway. PAX explains that residue near the mouthpiece can affect vapor amount and temperature, so keeping that path clear is the core habit [13]. Its own advice pairs that with the flat mouthpiece to slow airflow, fresh material, and a full oven with a light tamp [13].
An independent reviewer’s routine gives the work a reliable order, and the order matters more than the products [10]. Everything happens after the device cools to slightly warm, never hot, which keeps the job quick instead of fiddly.
Two light patterns are worth memorising, because owners search for both. The high-temperature warning shows all four LEDs pulsing orange-red before the device shuts off; PAX’s instruction is to let it cool for 30 minutes before powering on, then to try a lower heat mode, shorter sessions, or an earlier shutdown [8]. The factory reset is power on, hold the power/control button for 7 seconds, and confirm that all petals blink white 5 times [9].
- Brush the oven and lid once the device has cooled but is still slightly warm.
- Soak the oven screen in isopropyl alcohol or warm soapy water.
- Brush the vapor path to clear residue between the oven and the mouthpiece.
- Wipe the chamber and the lid.
- Remove and clean the mouthpiece after extended use.
- Dry every part completely before reassembling the device.
- Finish with a burnoff at the highest setting to clear anything left behind.
What Does the PAX FOUR Warranty Cover, and What Does It Exclude?
Warranty length varies sharply across this lineup, which makes it a buying consideration rather than fine print. The PAX FOUR carries a 2-year limited warranty plus 1 additional year if the device is registered within 30 days of purchase [1]. The independent review reports the same structure [10].
The rest of the family is different. The PAX MINI and PAX MINI 2 carry 2 years, with a 3-year period for buyers in California, Connecticut, Massachusetts, Maryland, Missouri, New Hampshire, or Virginia, or where registration was unavailable [3]. The PAX PLUS carries a 10-year limited warranty [5]. That gap is the largest difference between the PLUS and the FOUR on paper, and it is easy to miss when you are comparing heaters and ovens.
Exclusions are worth reading before you rely on the term. PAX’s limited warranty excludes accessories and attachments, damage from accident, misuse, moisture, or extreme conditions, damage caused by concentrates or waxes, cosmetic wear including scratches and dents, normal performance degradation of batteries, and failure to follow cleaning instructions [3]. The concentrates exclusion is worth noticing even on a device that does not take concentrates, because it shows how narrowly the policy reads.
Registration and paperwork do the rest. The serial number sits underneath the mouthpiece and along the side of the device, and registration plus proof of purchase are what establish the warranty period [10].
- PAX FOUR: 2-year limited warranty, plus 1 additional year if registered within 30 days of purchase [1].
- PAX MINI and PAX MINI 2: 2 years, extending to 3 years in California, Connecticut, Massachusetts, Maryland, Missouri, New Hampshire, or Virginia, or where registration was unavailable [3].
- PAX PLUS: 10-year limited warranty, the longest term in the lineup [5].
- Excluded: accessories and attachments.
- Excluded: damage from accident, misuse, moisture, or extreme conditions.
- Excluded: damage caused by concentrates or waxes.
- Excluded: cosmetic wear such as scratches and dents.
- Excluded: normal performance degradation of batteries.
- Excluded: failure to follow the cleaning instructions.
Frequently Asked Questions
Does the PAX FOUR work with concentrates?
No. PAX states the PAX FOUR is not compatible with the PAX Concentrate Insert, and an independent reviewer reports that PAX has no plans to offer an insert for this model, so it is a dry herb device only [1] [10]. If running concentrates matters to you, the PAX PLUS is the dual-use option in the same lineup: it accepts the Concentrate Insert and ships with 0.5 g standard and 0.25 g half-pack oven lids alongside its four Experience Modes [5].
How much material does the PAX FOUR oven hold?
About 0.3 g of ground material. PAX’s loading guidance for this model is to grind to a medium-fine consistency, fill the oven completely, and lightly tamp the material until it is full at roughly that amount [6]. An independent reviewer also settles on a 0.3 g load rather than a tightly packed half-gram, so the figure holds from both directions rather than being one vendor’s preference [10].
Why is the PAX FOUR slower to heat up than other PAX models?
It is a documented trade-off rather than a defect. An independent reviewer measured about 1 minute 22 seconds from a cold start on the PAX FOUR, slower as the battery drained, and describes it as the slowest heat-up in the current lineup, against roughly 20 seconds for the PAX MINI and about 40 seconds for the PAX FLOW [10]. PAX does not publish a heat-up time for the PAX FOUR, so those figures come from the reviewer.
Do you have to register a PAX FOUR to get the full warranty?
Registration adds a year. The device carries a 2-year limited warranty, plus 1 additional year if it is registered within 30 days of purchase [1]. Keep the proof of purchase as well, since registration and proof of purchase together are what establish the warranty period, and note that the serial number sits underneath the mouthpiece and along the side of the device [10].
Is the PAX FOUR worth it compared with the PAX MINI?
They solve different problems, so compare on the features you would actually use. The PAX MINI is the compact option at 89 g with four heat modes and two pack sizes, and heats in roughly 20 seconds [4], while the PAX FOUR takes about 1 minute 22 seconds by one reviewer’s measurement and is the full-oven device PAX positions for power [10]. On price, Treehouse Lifestyle listed the Pax Four Vaporizer at $300 during research and PAX Mini 2 listings at $149.99 and $180, so confirm current figures at checkout [12].
So Is the PAX FOUR the Right Vaporizer for You?
The PAX FOUR is PAX’s power pick in a dry herb lineup that splits by priority: simplicity, flavor, and power [2]. The hybrid heater, the four petals, the redesigned oven, and USB-C charging are real changes from the earlier models [1], and an independent review describes more visible output than the earlier conduction-only PAX devices without confirming the manufacturer’s 50% figure [10].
The trade-offs are just as real: about 1 minute 22 seconds to heat, a 2-year warranty against the PLUS’s 10, and no path to concentrates at all [10].
If you are a light to medium user who wants more output from a PAX session and likes the brand’s slow, steady draw, this is the model to consider. If you want the smallest device, the PAX MINI makes more sense. If you want concentrate support or a longer warranty, the PAX PLUS does. If you want wide-open draws and more modes, the PAX FLOW is the closer fit [10].
Buy on the spec that matches your habits rather than the biggest number on the page, confirm the price on the day, and register the device within 30 days if you want the extra warranty year.
Sources
- PAX: PAX FOUR Dry Herb Vaporizer
- PAX: Introducing PAX FOUR: Power You Can Feel
- PAX: PAX Labs Inc. Limited Warranty
- PAX: PAX MINI Dry Herb Vaporizer
- PAX: PAX PLUS Dry Herb and Concentrate Vaporizer
- PAX: Vapor production tips for PAX Four
- PAX: Why won’t my PAX Four charge correctly?
- PAX: PAX Four Orange LEDs
- PAX: PAX Four Device Reset
- Planet of the Vapes: PAX 4 Vaporizer Review: Pros, Cons and Final Verdict
- U.S. Consumer Product Safety Commission: Batteries
- Treehouse Lifestyle: Pax Four Vaporizer
- PAX: My PAX Four mouthpiece or vapor feels hot