Finnex HPC-100 digital glass aquarium heater

Exact-model photograph is not verified. This reference page is text-only; the standard model review retains the official Shop HPC-family photograph. The visible marking is generic and supports only a guarded-family heater with a sensor lead, not the selected wattage, exact assembly, or a seller package. No accessories or shipment contents are inferred.

Finnex’s model-specific HPC-100 row is 100 W, with a 20–30 US-gallon band, 68–92°F control range and 10.25-inch heater length. The public volume rule cannot enforce the 20-gallon floor, so this is a model reference, not a finder match or suitability recommendation. The saved Amazon lookup returned 503 before a listing could be identified; keep the destination labelled as an exact-model search.

Search results may include other models. Confirm the exact model, applicable region, condition and included parts before ordering.

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Documented model details

• Finnex’s exact Shop option identifies SKU HPC-100 / 100 W and UPC 850006562244 (variant ID 45585144676651). Its manual row lists 100 W, 20–30 US gallons, 0.90 A at a 115 V reference, a 68–92°F control range and a 10.25-inch heater length; the amperage figure is not a complete supply rating.
• The 20–30 gallon band has both a lower and upper endpoint. The public finder checks the upper capacity only and cannot screen out tanks below 20 gallons, so this reference must not be read as a recommendation or a claim that any aquarium up to 30 gallons will heat as needed.
• Finnex’s HPC family overview describes 2 mm quartz glass, a high-temperature-resistant guard, cord-mounted digital display and adjustment, a separate water sensor, temperature-setting memory and low-water sensor cutoff. Finnex instructs that sensor be cleaned and checked every 30 days; the cutoff is not permission for dry operation.
• Finnex states that the HPC series must operate in water with total dissolved solids above 150 ppm. The reviewed HPC sources do not expressly identify approved freshwater/saltwater use, installation orientation, immersion depth or inline-filter use.
• The official Shop assigns one shared HPC-family photograph to the 100 W option, but the visible marking is generic and does not distinguish HPC-100 from HPC-200/300 or establish the selected seller package. It is used only as an HPC-family visual.

Limits to weigh

• The manual’s 20–30 US-gallon range includes a 20-gallon minimum that the current maximum-only volume rule cannot enforce. HPC-100 is excluded from finder matches; this reference does not establish suitability for a particular tank.
• The manual’s 0.90 A at 115 V is only an amperage reference. Full supply voltage, frequency, plug and certification were not established; verify the actual unit’s complete electrical label.
• The inspected HPC sources do not document approved freshwater/saltwater types or a complete installation, orientation, clearance, immersion-depth or inline route. Do not import another Finnex model’s instructions.
• Finnex describes a temperature-setting range and low-variance control, but gives no numerical accuracy tolerance in the reviewed HPC sources and no independent measured aquarium-temperature performance. Use an independent thermometer and appropriate husbandry guidance.
• Amazon’s exact-model search returned HTTP 503 before results, an ASIN or package could be inspected. This does not establish that no listing exists; the central destination must remain a labelled exact-model search, not a verified product mapping.
• The official photo is shared across three HPC wattages and its marking does not identify the 100 W option. It is an accurate family illustration only, not proof of wattage-specific assembly, accessories, dimensions or the seller’s delivered package.

Check before ordering

• Check the listing and delivered unit for Finnex HPC-100 / 100 W; the maker’s exact variant record associates that model with UPC 850006562244. Do not substitute HPC-200 or HPC-300.
• Read the full 20–30 US-gallon band, including its 20-gallon floor. The public finder cannot enforce that lower limit and does not return this model as a match.
• Verify the actual unit’s complete voltage and frequency label before power-up. The 0.90 A at 115 V manual entry alone is not the full electrical specification.
• Review the instructions supplied with the exact item for the intended installation, orientation, immersion level, clearance and sensor placement. Do not treat the low-water sensor cutoff as permission to run the heater dry.
• Confirm the water meets Finnex’s stated above-150-ppm TDS requirement and follow the manufacturer’s sensor clean/check schedule; the source does not establish water-type approval or species suitability.
• If using the official image for identification, note it is shared by all three sizes and does not identify a selected wattage-specific package. Confirm the actual model and parts in the seller’s listing and shipment.
• The model-specific Amazon listing was not verified. Treat the central destination as a full-model search, then check the exact identity, seller, package and return terms before ordering; no price or current stock is asserted.