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Sunniva Heatpumps
      • Home
      • Products
      • Blog
      • Founder's Desk
      • Contact us
      • Calculator
        • Commercial Hot Water Heat Pump
        • Swimming Pool Heat Pump Calculator
    • Follow us
    Water to water
    SE-WW Series

    Water source heat pumps — hot and chilled together

    Hot and chilled water from the same machine at the same time — no fans, and no dependence on the ambient air temperature.

    Size your system Talk to an engineer
    Water-to-water package evap cond source in chilled out hot out return No air coil, no fan, no defrost cycle — both circuits are water Schematic, not to scale

    Full technical data sheets for this range are being prepared. Ask us for the current selection table and we will send it the same day.

    Is this the right range for you?

    Two minutes here saves a wasted quotation. The boundaries below are the published ones, not sales judgement.

    Yes, if all of these are true

    • You need cooling and hot water at the same time
    • You already reject heat to a cooling tower or a condenser loop
    • You have a water source — bore, tower, process return
    • Fan noise or outdoor space is a constraint

    Look at another range if

    • You only need hot water — see Commercial Heat Pump
    • You want ground-coupled exchange — see Geothermal Heat Pump
    • You need above 80 °C — see Super High Temperature Heat Pump

    Applications

    Where this range is normally installed.

    Hotels
    Resorts
    Hospitals
    Boarding schools
    Villas

    Key features

    What is inside the cabinet, and why each of them is there.

    Hot and chilled water simultaneously from one machine

    No fans — performance independent of the outdoor air

    Recovers heat that would otherwise go to a cooling tower

    Suited to buildings that need both loads at once

    Benefits

    What this range does for the building, rather than what is in the box.

    Two duties, one machine

    A hotel needs air conditioning and hot water at the same time, all year. Doing both in one machine is the cheapest heat you will ever buy.

    The ambient stops mattering

    No air coil means no defrost cycle and no January derating.

    Quiet by construction

    No fans is no fan noise.

    Size the heating side

    The industrial calculator will size the hot water or process duty. The simultaneous cooling side depends on your building, so talk to us for the full selection.

    Open the calculator

    And what every Sunniva heat pump gives you

    True of the whole range, not just this one.

    • Up to 75 % off water heating against electric, LPG or PNG
    • Quick payback and strong return on investment
    • The longest product life of any common water-heating technology
    • Silent operation
    • Hot water round the year, independent of sunlight
    • Lower carbon emissions
    • Negligible maintenance cost
    • Saves space against a boiler or a solar-thermal field

    Common questions

    The ones our engineers are actually asked.

    What water source do I need?
    Anything that gives a steady flow at a usable temperature — a cooling tower loop, a bore well, process return water, or a condenser circuit. The source temperature and flow set the performance, so tell us both.
    Is it really free heat?
    Close to it, when you need cooling anyway. Heat you were about to throw away in a cooling tower becomes your hot water instead, and you pay only for the compressor.
    When will full data be available?
    Technical data sheets for this range are in preparation. Ask us for the current selection table and we will send it the same day.

    Downloads and related ranges

    All datasheets User manual Service manual Geothermal Heat PumpHigh Temperature Heat PumpCommercial Heat Pump

    Performance figures are published test data at the stated conditions and are not a guarantee for a specific installation. Draw-off pattern, pipe runs, water quality, static head and local code all affect the final selection — confirm with Sunniva Encon LLP before ordering.

    © 2026 Sunniva Encon LLP. The design and code of this page are our copyright. Results are indicative and offered in good faith — the method is set out above. Confirm the final selection with us before ordering.
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    Welcome to Sunniva Encon, where innovation meets sustainability

    At Sunniva Encon, we specialize in manufacturing high-quality heat pumps designed to meet the unique needs of the Indian market. Since 2012, we've been committed to providing sustainable and efficient heating and cooling solutions.

    Our diverse range of products includes commercial heat pumps, swimming pool heat pumps, high-temperature heat pumps, domestic heat pumps, water-to-water heat pumps, geothermal heating and cooling systems, solar water heaters, electric water heaters, hot water storage tanks, and hybrid solutions.

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