Here are some answers to your concerns:

Q: Does the chiller need maintenance? 
A: Yes. Regular maintenance is required. Turn off and unplug the power before maintenance.

Q: Chillers generate a lot of heat around them when they are in use?
A: The compressor will release some heat during the cooling process, so we need to leave enough space between the chiller and the wall to dissipate the heat, at least 24''. Heat generation indicates that the compressor is working properly and will not cause damage.

Features & Details

• Stable Water Temperature: Like an AC for your fish tank, this 110 Gal / 416 L chiller maintains water between 65℉–80℉, ideal for keeping fish secure in hot weather. It’s essential for stable temperature control in larger tanks. Please review the product specs (dimensions, voltage, power, capacity, cooling range) before purchasing. For help, contact customer service. NOTE: Heat is released during cooling. Use in a well-ventilated area if placed indoors
• 0.33 HP Energy-saving Compressor: Our aquarium tank chiller uses a high-efficiency, Freon-free compressor, and R134a refrigerant. This means that the circulation and cooling water remain free from pollution. To ensure proper cooling of the chiller, we also provide a 264-660 gallons per hour water pump that delivers effective and stable water circulation. NOTE: The chiller's cooling ability is affected by water volume, tank size, and temperature. For better performance, use less water
• Rapid Heat Dissipation: The aquarium water chiller has a built-in fan and cooling holes on the front and rear sides for powerful ventilation. This disperses the heat from the compressor, allowing it to work efficiently all day long. Just make sure to leave at least 24 inches of space around the chiller for proper air circulation and effective cooling.
• Keep Aquatic Life Alive: Features a corrosion-resistant titanium evaporator, making it safe for use in both fresh and brackish aquatic environments. Our water chiller for fish tank is perfect for keeping any aquatic life, such as axolotls, fish, crystal shrimp, corals, and jellyfish, at the ideal temperature.
• Bedroom-level Quiet: The fish tank chiller operates with low noise, making it perfect for fish keepers and hydroponics enthusiasts who don't want to be disturbed during their daily work or rest. It's versatile too and can be used in fish tanks or aquaponic systems in a variety of settings such as homes, hotels, and aquariums.
• NOTE: Please read the product details before purchasing to ensure it meets your needs（dimensions, voltage, power, tank capacity, cooling temperature range, usage）. For assistance, feel free to contact customer service.