Winter eel farming: the real test of any heat pump

At low ambient temperatures, many heat pumps reverse cycle to defrost — pulling heat from the pond water. That can drop your eel pond by 1–2°C per defrost cycle. HONMOOK’s intelligent defrost isolates the water circuit during defrost, keeping eels stable even at -10°C outside.

A true winter eel farming heat pump maintains COP > 2.5 at low temps while never cooling your stock. That’s engineering, not compromise.

Temperature stability directly improves eel health and feed conversion

At 26°C, FCR (feed conversion ratio) can be as low as 1.8. At 22°C, FCR jumps to 2.5 — 40% more feed for the same growth. Swings suppress immunity, causing disease and uneven harvests.

Constant temperature heat pump for eel pond from HONMOOK eliminates daily swings. Farmers report uniform sizes, fewer infections, and shorter time to market.

What size heat pump for a 5000L eel tank? The real answer depends

HONMOOK’s approach: engineering, not box-dropping

We don’t ship generic units. Each customized heat pump for rice eel farming starts with your pond data: dimensions, insulation, climate, target temperature. We run a heat loss model, select the right compressor, titanium exchanger size, and controller logic. You get a system matched to your farm — lower bills, longer life, healthier eels.

Ready to stop wasting energy and start growing eels faster? Share your pond details, receive a free heat loss calculation and matched proposal.