Amerec
Amerec Junior sauna heater
The Amerec Junior is a 3 kW heater that Amerec rates for saunas of 71 ft³ to 148 ft³. Check it against your room, see how fast it heats and what it needs from your fuse box.
Updated Oct 17, 2026
Output
3 kW
Rooms
71 ft³–148 ft³
Stones
24 lb
Sizes
1
Which size fits your sauna?
Your room's effective volume
109 ft³
Best fit: 3.0
Work out your effective volumeEffective volume = inside volume, plus 1.2 m³ for every m² of glass, tile or stone; × 1.5 for solid log walls (Harvia's rule, used by most planners).
Sizes and specifications
| Model | Output | Room range | Stones | Heat-up | Per session |
|---|---|---|---|---|---|
| Junior 3.0 | 3 kW | 71 ft³–148 ft³ | 24 lb | 40–55 min | $0.70 |
Heat-up and cost are our heat model's estimate for each size in a room at the middle of its range: indoor, insulated walls, 68 °F around the sauna, heated to 176 °F, one hour of bathing, electricity at $0.18/kWh (United States average).
Electrical connection
| Output | single-phase 240 V |
|---|---|
| 3 kW | 12.5 A |
Current is computed from the output; fuse and cable are shown where the maker or dealer states them. A licensed electrician sizes and installs the circuit following the heater's manual and local rules.
Where to see it
- Junior 3.0$1,740 at topture.com (2026-10-17)
Prices and availability come from the shop or maker and change; their page is what counts. Shop offers are added as retailers join.
Sources
- topture.com/products/amerec-junior-3kw-electric-sauna-heaterdealer · read 2026-10-17
Other heaters for the same rooms
Questions and answers
What size sauna does the Amerec Junior heat?
Amerec rates the sizes for these rooms: Junior 3.0 71 ft³–148 ft³. Use your room's effective volume: add 1.2 m³ for every m² of glass, tile or stone, and multiply by 1.5 for solid log walls.
What fuse or breaker does the Amerec Junior need?
It depends on the size and your supply: Junior 3.0: 1~ 240 V: 12.5 A. A licensed electrician sizes the circuit from the heater's manual and local rules.
How long does the Amerec Junior take to heat up?
In a well-insulated indoor room at the middle of each size's range, our heat model gives: Junior 3.0 40–55 min to reach 176 °F. Outdoor saunas, glass and cold weather take longer.
How many stones does the Amerec Junior take?
As stated by Amerec: Junior 3.0 24 lb. Use the stone size the manual specifies and re-stack the stones at least once a year, replacing crumbled ones.