The MAD Heaters TEMPEST 2 and DynaVap M7 are battery-free portable vaporizers, but they solve manual heating in different ways. MAD Heaters describes the TEMPEST 2 as a convection-heavy, ball-assisted device with a visual temperature gauge and click indicators. DynaVap describes the M7 as a compact stainless-steel thermal extraction device; its own comparison material classifies the M7 heating method as hybrid conduction and convection. Neither description should be simplified to a laboratory-proven percentage split.
Short answer: the TEMPEST 2 offers more adjustment points, three documented bowl positions, three direct water-piece sizes, and documented support for both the Wand and YLL 3.0. The M7 is much shorter and lighter, has a 0.1 g bowl with a half-bowl setting, supports torch or induction heating, and connects directly to a 10 mm water piece according to the current M7 product page. Which design is preferable depends on whether configurability or compact simplicity matters more; we found no controlled VapoChecker side-by-side protocol that would justify declaring a universal flavor or vapor winner.
TEMPEST 2 vs DynaVap M7: verified specifications
| Comparison point | MAD Heaters TEMPEST 2 | DynaVap M7 |
|---|---|---|
| Heating design | Manufacturer-described as convection-heavy and ball-assisted; not presented here as pure convection | DynaVap comparison material lists hybrid conduction and convection |
| Heat feedback | Two click discs plus a visual indicator; the two discs may activate together | Captive Cap with heating and cool-down clicks |
| Documented heat sources | Torch, iSpire Wand and YLL 3.0 | Torch or induction heater; current product page lists Wand and YLL compatibility |
| Bowl | Approximately 0.10, 0.15 or 0.20 g, depending on screen position | Approximately 0.10 g, with Adjust-a-Bowl half-bowl setting |
| Size and weight | 122 × 18.5 mm; 46 g with aluminium heat shield or 43 g with wood heat shield | 9.1 cm and 17.3 g |
| Airflow adjustment | Cap: one top screw plus rotating induction sleeve. Stem: mouthpiece plus rotating heat shield | Redesigned airport with pivot-style control |
| Water-piece fit | 10, 14 and 18 mm | Direct 10 mm compatibility on the current product page |
| Manufacturer warranty | One year for defects in materials and workmanship under normal use; exclusions apply | Functional issues on M-Series devices covered indefinitely; wear parts and other exclusions apply |
| Current price comparison | 199.00 € incl. shipping | 62.10 € Code VAPOCHECKER10 · incl. shipping |
Price shortcodes retrieve currently available VapoChecker offers. Compare the same country, currency, stock status and bundle scope. A fixed price multiple would become stale and can be mathematically misleading.
The 290 °C TEMPEST claim explained
The 290 °C figure is not a verified herb, bowl or vapor temperature. In the TEMPEST 2 manual, the Wand’s displayed “temperature” is used to adjust heating time. The manual explicitly says those settings function as a timer rather than indicating actual temperature. It gives 290 °C / 550 °F as a starting setting in one Wand workflow, while other tables vary the displayed value by ball material, adapter and head configuration.
That distinction matters. A timer-like display value cannot be copied into a comparison table as the maximum material temperature. Actual heating also changes with the heat source, induction-heater power, insertion depth, ball medium, ambient conditions and technique. The manual’s YLL 3.0 examples span different wattages and times, so there is no honest single “TEMPEST heat-up time” that applies to every setup.
Heat indicators and induction compatibility
The TEMPEST 2 has both audible and visual feedback. MAD Heaters documents two click discs in the head and a visual indicator on the cap. The manual notes that the discs can click simultaneously and may change slightly during their initial uses. Users still need to follow the current manual: the indicators are feedback mechanisms, not a guarantee against overheating or combustion.
Induction support is also documented, not absent. MAD Heaters names the iSpire Wand and YLL 3.0. The Wand setup is adapter- and depth-sensitive, and the manual warns that some Wand glass openings may be too narrow. It specifies a minimum opening and says not to force a no-wiggle fit because the glass can break. The YLL 3.0 setup likewise depends on power, timer and insertion depth. Treat the manual as the operating source rather than copying a generic temperature number.
The M7 also supports induction heating. DynaVap’s current product page names YLL and Wand induction heaters in its compatibility section and supplies a single-flame torch with the listed package. Its click provides a repeatable signal, but manual heating still leaves room for technique error. A click-cap vaporizer should never be described as combustion-proof.
Airflow: what is actually adjustable?
The TEMPEST 2 does not have “three adjustable airflow screws.” Its manual separates two airflow systems. For cap airflow, loosen the top cap screw, rotate the induction sleeve, and retighten the screw. For stem airflow, loosen the mouthpiece and rotate the heat shield to adjust or close the stem intake. These controls affect different parts of the air path, which is more useful information than an incorrect screw count.
The M7 uses DynaVap’s redesigned airport and pivot-style rocker for manual airflow control. This is the simpler arrangement of the two. The comparison can infer that the TEMPEST offers more configuration points and the M7 fewer, but it cannot infer which draw feels better for every person without a disclosed test protocol.
Bowl size, portability and water pieces
MAD Heaters documents three approximate TEMPEST 2 bowl capacities: 0.10, 0.15 and 0.20 g. The selected screen position therefore has to accompany any capacity comparison. Saying only that it has a “larger bowl” hides the smallest setting and exaggerates the difference when the TEMPEST is configured at roughly 0.10 g.
The M7 product page lists a 0.1 g bowl and an Adjust-a-Bowl option that reduces the chamber by half. At 9.1 cm and 17.3 g, it is materially shorter and lighter than the 122 mm TEMPEST 2 at 43 or 46 g. Those are manufacturer-published design facts, not a claim that one is universally easier to carry.
For water pieces, the TEMPEST 2 product page lists 10, 14 and 18 mm compatibility. The current M7 product page states direct 10 mm compatibility. An older DynaVap comparison article says the standard M7 needs an adapter, which conflicts with the current product page. We use the current model-specific product page here and disclose the conflict rather than silently choosing whichever claim makes a stronger comparison.
Warranty and ownership scope
MAD Heaters’ current policy gives its products a one-year warranty unless a product page states otherwise. It covers material and workmanship defects under normal use and excludes misuse, accidents, modifications and normal wear. This is not a two-year TEMPEST warranty.
DynaVap’s current policy says functional issues on M-Series devices are covered indefinitely. That language is conditional, not an indestructibility promise. CCDs, O-rings, replacement media and accessories are excluded, as are misuse, negligence, improper care, extreme wear and other listed cases. Purchase channel and proof requirements can also matter when making a claim.
Who should choose which?
- Consider the TEMPEST 2 if three bowl positions, visual plus audible feedback, extensive airflow adjustment, documented Wand/YLL support, and direct 10/14/18 mm water-piece options are priorities.
- Consider the M7 if a substantially lighter and shorter steel device, a 0.1 g bowl with half-bowl mode, direct 10 mm fit, and a simpler click-cap workflow better match your needs.
- Choose neither on a health promise. Dry-herb vaporization avoids intentional combustion, but it is not risk-free. Emissions and effects depend on device, material, heat and technique. We found no independent clinical or emissions-laboratory comparison of these two exact devices.
Frequently asked questions
Is the TEMPEST 2 pure convection?
No. MAD Heaters calls it convection-heavy and ball-assisted. That wording allows for other heat-transfer effects and is more precise than “pure convection.”
Does 290 °C mean the herb reaches 290 °C?
No. In the TEMPEST manual, the Wand display value functions as a heating timer. It is not a measured chamber or herb temperature.
Can both devices use induction heaters?
Yes. Current manufacturer material documents the Wand and YLL 3.0 for both. Follow the exact device and heater instructions because adapter depth, fit, power and timing differ.
Does the M7 need an adapter for every water piece?
No. The current M7 product page lists direct 10 mm water-piece compatibility. Other joint sizes or individual glass geometry may still need an appropriate adapter.
Which one has better flavor?
We do not name a winner. A defensible answer would require matched material, grind, load, heat source, draw profile, blinded scoring and repeat trials. No such VapoChecker protocol is documented for this pair.
Sources and verification record
Checked 31 August 2026. Manufacturer specifications and policies can change. The following pages were used as the primary evidence for this correction:
- MAD Heaters: TEMPEST 2 product page
- MAD Heaters: TEMPEST 2 manual
- MAD Heaters: refund and warranty policy
- DynaVap: current M7 product page
- DynaVap: M7/M7 XL/HyperDyn comparison
- DynaVap: returns and warranty policy