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OASE HeatUp 100 US Aquarium Heater
Model: HeatUp 100 US · US configuration
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A 100 W adjustable quartz-glass aquarium heater with a 66–90°F scale and 26.4 US gal conservative maximum; OASE also lists 100 L and markets up to 30 US gal.
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Explore this buying guide ↗Why consider this model?
- The 100 W HeatUp 100 sits between the short 50 W body and the 315 mm sizes: it is 245 mm / about 9.6 inches tall. OASE lists 100 L and separately says up to 30 US gal; 100 L is about 26.4 US gal, so the lower number is used for matching. Its external-filter option is specifically a FiltoSmart 100 with the separate ThermoFit 100 (model 48507), which is not included.
Tradeoffs to weigh
- Do not apply the 30 US gal headline above the conservative 26.4 gal conversion of the 100 L table value. The narrative says 230 V but the exact technical table lists 115 V / 50–60 Hz; verify the physical label. A FiltoSmart 100 external setup requires ThermoFit 48507, while the heater alone is only the in-tank component. The glass tube is not documented as shatterproof.
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