Top 10 Aquarium Chillers for Coldwater or Reef Tanks in 2027
The JBJ Arctica Titanium DBM-250 is the best aquarium chiller here: a 1/3 HP unit with a titanium heat exchanger, listed at $1,165.32. The TECO TK2000 ($1,939.99, rated 130 to 500 gallons) is #2, and the Aqua Euro Max Chill 1/4 HP ($749.95, up to 170 gallons) is #3. For a nano tank, the JBJ Mini Arctica (40 gallons, 39 dB) is the quiet compressor pick.
At a glance
| # | Pick | Cooling type | Best for |
|---|---|---|---|
| 1 | JBJ Arctica Titanium DBM-250 | 1/3 HP compressor (250 W output) | A large reef or coldwater system that needs a quiet, high-flow titanium chiller |
| 2 | TECO TK2000 | 1/3 HP compressor | Tanks from 130 to 500 gallons that want app control (WiFi module sold separately) |
| 3 | Aqua Euro Max Chill 1/4 HP | 1/4 HP compressor | A mid-size reef tank up to 170 gallons on a budget |
| 4 | Active Aqua Chiller 1/4 HP (AACH25HP) | 1/4 HP compressor, 3,010 BTU per hour | Tanks of 40 to 92 gallons where a fast initial pull-down (boost function) matters |
| 5 | TECO DI-1000 Drop-In | 1/4 HP compressor, 260 watts | An established tank with a sump where you do not want to re-plumb |
| 6 | Aqua Medic Titan 600 | 0,25 HP compressor, about 600 W cooling power | European reef or coldwater tanks up to 750 litres that need a published noise figure |
| 7 | TECO TK500 | 1/6 HP compressor, 225 watts | A tank up to 120 gallons that wants the TECO controls in a smaller unit |
| 8 | JBJ Mini Arctica DBA-050-D | 1/15 HP compressor | A quiet nano or coldwater tank up to 40 gallons |
| 9 | Nova Tec IceProbe | Thermoelectric (Peltier), no refrigerants | A small 10-gallon tank that only needs a few degrees of cooling |
| 10 | JBJ Nano Arctica E-Chiller 20G | Thermoelectric, compressor-free | A nano tank up to 20 gallons that wants a pump in the box |
Pick by what you want
The ranking
JBJ Arctica Titanium DBM-250
JBJ lists the Arctica DBM-250 with a 1/3 HP compressor (250 W output), a titanium heat exchanger, R-134a refrigerant and a flow range of 480 min. to 2420 max. gal/h. JBJ does not give a tank size and points buyers to its chiller calculator. Bulk Reef Supply lists it at $1,165.32.
TECO TK2000
The TECO TK2000 is rated for aquariums of 130 to 500 gallons, with a 1/3 HP compressor, a titanium heat exchanger and R290 refrigerant. It has a digital thermostat that switches between Fahrenheit and Celsius, and an optional TEConnect WiFi module adds app control. It costs $1,939.99 at Bulk Reef Supply.
Aqua Euro Max Chill 1/4 HP
Aqua Euro USA rates the Max Chill 1/4 HP for tanks up to 170 gallons. It has a corrosion-resistant titanium heat exchanger, Dupont R134a refrigerant, an anti-freezing system and a memory recall that keeps settings after a power outage. Bulk Reef Supply lists it at $749.95, shown out of stock when we checked.
Active Aqua Chiller 1/4 HP (AACH25HP)
Hydrofarm lists the Active Aqua 1/4 HP chiller at 3,010 BTU per hour, with a pure titanium evaporator for fresh and salt water, R134a refrigerant and a recommended volume of 40 to 92 gallons. A boost function speeds up the first pull-down. The SRP is $799.00.
TECO DI-1000 Drop-In
The TECO DI-1000 is a 1/4 HP drop-in chiller for 60 to 200 gallons. Its titanium coil sits directly in your sump, so there are no inlet and outlet hoses or feed pump to connect. It uses R290 refrigerant, draws 260 watts and costs $1,899.99 at Bulk Reef Supply.
Aqua Medic Titan 600
Aqua Medic says Titan heat exchangers are pure, salt water-resistant titanium and suit fresh or salt water. The 750 l model lists a 0,25 HP compressor, about 600 W of cooling power, R134a gas and about 48,4 dB at 1.50 m. It runs on 220 - 240 V / 50 Hz and no price is published.
TECO TK500
The TECO TK500 is rated for aquariums up to 120 gallons, with a 1/6 HP compressor drawing 225 watts, a titanium heat exchanger and R290 refrigerant. It takes the same optional TEConnect WiFi module as the TK2000. It costs $1,329.99 at Bulk Reef Supply.
JBJ Mini Arctica DBA-050-D
The JBJ Mini Arctica DBA-050-D is a 1/15 HP chiller for tanks up to 40 gallons. JBJ lists 39 dB and R-134-A refrigerant, an analog controller that holds +/- 1°F of the set point and an alarm for any malfunction. It costs $584.84 at Bulk Reef Supply.
Nova Tec IceProbe
The Nova Tec IceProbe is a thermoelectric (Peltier) chiller with a quiet low-speed fan and no refrigerants. It cools 10 gallons 6-8°F below ambient air, and over 20°F in a fully insulated 10 gallon tank. It installs through a 1.25" hole or hangs from a bracket. It costs $239.99 at Bulk Reef Supply.
JBJ Nano Arctica E-Chiller 20G
The JBJ Nano Arctica E-Chiller 20G is a compressor-free thermoelectric chiller for tanks up to 20 gallons. It lowers water temperature by up to 9-11°F depending on room temperature, and includes a pump with a max of 118 GPH. It costs $449.99 at Bulk Reef Supply.
How we ranked these
Questions people ask
What is the best aquarium chiller for a reef tank?
The JBJ Arctica Titanium DBM-250, a 1/3 HP chiller with a titanium heat exchanger and a 480 to 2420 gal/h flow range, listed at $1,165.32 at Bulk Reef Supply.
Which chiller covers the biggest tank?
The TECO TK2000, which TECO rates for aquariums of 130 to 500 gallons. It costs $1,939.99 at Bulk Reef Supply.
Do I need a chiller with a titanium heat exchanger for saltwater?
TECO says its titanium heat exchanger resists corrosion, and Aqua Medic says the Titan series uses pure, salt water-resistant titanium so it suits fresh or salt water aquaria. All of the compressor chillers on this list state a titanium exchanger except the JBJ Mini Arctica, whose listing does not say.
Is a thermoelectric chiller enough?
Only for small tanks. Nova Tec says one IceProbe cools 10 gallons 6-8°F below ambient air but only 1-2°F at 40 gallons, and JBJ rates the Nano Arctica E-Chiller for tanks up to 20 gallons.
Rated tank size (top of stated range) at a glance
Official sites
- JBJ Arctica Titanium DBM-250 · jbjaquarium.com
- TECO TK2000 · bulkreefsupply.com
- Aqua Euro Max Chill 1/4 HP · bulkreefsupply.com
- Active Aqua Chiller 1/4 HP (AACH25HP) · hydrofarm.com
- TECO DI-1000 Drop-In · bulkreefsupply.com
- Aqua Medic Titan 600 · aqua-medic.de
- TECO TK500 · bulkreefsupply.com
- JBJ Mini Arctica DBA-050-D · bulkreefsupply.com
- Nova Tec IceProbe · bulkreefsupply.com
- JBJ Nano Arctica E-Chiller 20G · bulkreefsupply.com
Sources
Prices, specs and availability change; confirm on the official site before you buy.