See it at HUUM: DROP 4
HUUM's own page for the DROP 4. Not a paid link.
DROP 4 vs Air 5
HUUM DROP 4 and Saunum Air 5, compared on the figures their makers publish. Both electric heaters are rated by their makers for at least some of the same room sizes.
The makers' figures side by side
| Specification | HUUM DROP 4 | Saunum Air 5 |
|---|---|---|
| Heater output | 4.5 kW | 5 kW |
| Room size it is rated for | 3–7 m³ (about 106–247 ft³, our conversion) | 106–212 ft³ (about 3–6 m³, our conversion) |
| Fuel | Electric | Electric |
| Voltage | 240 V 2~ or 208 V 2~ | 240 V |
| Breaker / current | 30 A (240 V), 20 A (208 V) | — |
| Stone capacity | 55 kg | 50 kg |
| Controls | The UKU control system set already includes a black plastic control panel CLASSIC Black | Connect the Saunum Air to the Air IQ control unit |
| Mounting | Wall | — |
| Dimensions | H 590 mm x W 390 mm x D 335 mm | — |
| Weight | 11 kg | — |
| Safety listing | — | UL (UL 875, cert UL-US-2310119-2); CSA C22.2 No. 164 (UL-CA-2308849-2) |
| Warranty | 3 years (private use); 1 year (commercial use) | The warranty period of the sauna climate device when used in a private sauna is two (2) years |
| Made in | Estonia | — |
Each figure is the maker's own, as cited row by row on the DROP 4 and Air 5 pages and listed in the sources below. A dash means the figure is not on the maker pages we cite. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.
Where to buy
HUUM DROP 4
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- Select Saunas
Amazon — with UKU Local control (Wood)
Sold via a marketplace listing — the seller may not be the brand or an authorized retailer.
See it at Saunum: Air 5
Saunum's own document for the Air 5 (PDF). Not a paid link.
Where the published figures differ
- Heater output: DROP 4: 4.5 kW. Air 5: 5 kW.
- Room size it is rated for: DROP 4: 3–7 m³ (about 106–247 ft³, our conversion). Air 5: 106–212 ft³ (about 3–6 m³, our conversion).
- Voltage: DROP 4: 240 V 2~ or 208 V 2~. Air 5: 240 V.
- Stone capacity: DROP 4: 55 kg. Air 5: 50 kg.
- Controls: DROP 4: The UKU control system set already includes a black plastic control panel CLASSIC Black. Air 5: Connect the Saunum Air to the Air IQ control unit.
- Warranty: DROP 4: 3 years (private use); 1 year (commercial use). Air 5: The warranty period of the sauna climate device when used in a private sauna is two (2) years.
Figures we cite for only one of the two: breaker / current (only HUUM's cited pages give it); mounting (only HUUM's cited pages give it); dimensions (only HUUM's cited pages give it); weight (only HUUM's cited pages give it); safety listing (only Saunum's cited pages give it); made in (only HUUM's cited pages give it). Ask the other maker before treating the two as equal on those points.
Read each one in full
HUUM DROP 4
HUUM · electric · 4.5 kW · rated for 3–7 m³ (about 106–247 ft³, our conversion)
Saunum Air 5
Saunum · electric · 5 kW · rated for 106–212 ft³ (about 3–6 m³, our conversion)