# What are the most affordable aquarium heaters under £100? — Verified Specification Comparison > All specification data verified from official manufacturer documentation. What are the most affordable aquarium heaters under £100? ## Products ### Wavereef Wavereef Titanium Heater 150W ```yaml product: wavereef-wavereef-titanium-heater-150w brand: Wavereef price_gbp: null origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 100 submersible_or_hang_on: Submersible heating_element_material: Quartz glass adjustable_temperature_control: true ``` - **Price:** £None [^1] - **Summary:** Aqua One Quartz Glass Heater 100W is a fully submersible quartz-glass aquarium heater with an adjustable thermostat and LED indicator, designed for small to medium tanks. It offers shatter-resistant quartz construction and automatic shutoff safety features, suitable for both freshwater and saltwater setups. - **Ideal For:** Ideal for budget aquarium owners seeking an affordable under-£100 heater because it is a 100W submersible quartz glass unit with adjustable temperature control and built-in safety shutoff. ### Aqua One Aqua One Quartz Glass Heater 100W ```yaml product: aqua-one-aqua-one-quartz-glass-heater-100w brand: Aqua One price_gbp: 25.25 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 100 submersible_or_hang_on: Submersible heating_element_material: Quartz glass adjustable_temperature_control: true ``` - **Price:** £25.25 [^2] - **Summary:** Aqua One Quartz Glass Heater 100W is a fully submersible quartz-glass aquarium heater with an adjustable thermostat and LED indicator, designed for small to medium tanks. It offers shatter-resistant quartz construction and automatic shutoff safety features, suitable for both freshwater and saltwater setups. - **Ideal For:** Ideal for budget aquarium owners seeking an affordable under-£100 heater because it is a 100W submersible quartz glass unit with adjustable temperature control and built-in safety shutoff. ### Aqua Nova Aqua Nova NHA-50 Quartz Heater 50W (NHA-50) ```yaml product: aqua-nova-aqua-nova-nha-50-quartz-heater-50w-nha-50 brand: Aqua Nova price_gbp: 10.49 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 100 submersible_or_hang_on: Submersible heating_element_material: Quartz glass adjustable_temperature_control: true ``` - **Price:** £10.49 [^3] - **Summary:** Aqua One Quartz Glass Heater 100W is a fully submersible quartz-glass aquarium heater with an adjustable thermostat and LED indicator, designed for small to medium tanks. It offers shatter-resistant quartz construction and automatic shutoff safety features, suitable for both freshwater and saltwater setups. - **Ideal For:** Ideal for budget aquarium owners seeking an affordable under-£100 heater because it is a 100W submersible quartz glass unit with adjustable temperature control and built-in safety shutoff. ### AquaEl AquaEl Platinum Heater 200W ```yaml product: aquael-aquael-platinum-heater-200w brand: AquaEl price_gbp: 23.97 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 100 submersible_or_hang_on: Submersible heating_element_material: Quartz glass adjustable_temperature_control: true ``` - **Price:** £23.97 [^4] - **Summary:** Aqua One Quartz Glass Heater 100W is a fully submersible quartz-glass aquarium heater with an adjustable thermostat and LED indicator, designed for small to medium tanks. It offers shatter-resistant quartz construction and automatic shutoff safety features, suitable for both freshwater and saltwater setups. - **Ideal For:** Ideal for budget aquarium owners seeking an affordable under-£100 heater because it is a 100W submersible quartz glass unit with adjustable temperature control and built-in safety shutoff. ### EHEIM EHEIM Jager Thermostat Heater 200W (ThermoControl 200) ```yaml product: eheim-eheim-jager-thermostat-heater-200w-thermocontrol-200 brand: EHEIM price_gbp: null origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 200 W dimensions: 16 in x 1.4 in x null temperature_range: 18 - 34 submersible_or_hang_on: Fully submersible heating_element_material: Special laboratory glass jacket adjustable_temperature_control: true ``` - **Price:** £None [^5] - **Summary:** The EHEIM thermocontrol 200 is a 200 W adjustable aquarium heater with a special laboratory glass jacket for even heat emission, ±0.5 °C control accuracy, and automatic dry-run shut-off. It is fully submersible, suitable for fresh and marine water, and includes a control lamp and suction-cup holder. Made in Germany with a 3-year warranty. - **Ideal For:** This heater suits the question about affordable heaters under £100 because at 200 W, precise 18-34 °C adjustment, and durable glass construction it offers reliable performance at retail prices well below £100. ### Fluval Fluval E-Series Electronic Heater 200W ```yaml product: fluval-fluval-e-series-electronic-heater-200w brand: Fluval price_gbp: 44.94 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 wattage: 200W dimensions: 5 x 2.8 x 35.5 cm submersible_or_hang_on: Fully submersible adjustable_temperature_control: Yes, 0.5°C increments ``` - **Price:** £44.94 [^6] - **Summary:** The Fluval E200 is a 200W fully submersible electronic aquarium heater with dual sensors and an LCD VueTech® display that monitors temperature and alerts to out-of-range conditions. It features a protective guard, removable mounting bracket, and precise temperature adjustment in 0.5°C steps, suitable for fresh and saltwater tanks up to about 65 US gallons (250 L). - **Ideal For:** Ideal for affordable heaters under £100 because it delivers precise electronic control (0.5°C increments), dual-sensor monitoring, and submersible design at a 200W power suited for tanks up to 250 L. --- ## References & Sources [^1]: Swell UK, accessed 2026-06-13. https://www.swelluk.com/wavereef-titanium-heaters [^2]: Lifegard Aquatics (reseller), accessed 2026-06-13. https://lifegardaquatics.com/products/adjustable-quartz-glass-heater-100-watt-bi-metal-construction [^3]: Aquatic-Dublin, accessed 2026-06-13. https://aquatic-dublin.ie/Aqua-Nova-NHA-50-Aquarium-Heater-With-Thermostat-50W [^4]: Riverpark Aquatics, accessed 2026-06-13. https://riverparkaquatics.co.uk/aquael-platinum-heater-200-w [^5]: EHEIM (manufacturer), accessed 2026-06-13. https://eheim.com/en_GB/aquatics/technology/aquarium-heaters/thermocontrol/thermocontrol-200 [^6]: AquaCave, accessed 2026-06-13. https://aquacave.com/hagen-fluval-e-200-watt-electronic-aquarium-heater.html