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Built around the job
Engineered to order

When the catalogue does not have it — we build it

Thirteen ranges cover most of what a building or a plant needs. This is for the rest: a duty above the standard range, a water that would eat an ordinary exchanger, an ambient nobody designs for, or a refrigerant your reporting position requires. Configure it and our engineering team comes back with the machine, the price and a delivery time.

Sunniva Customized Heat Pump

There is no model table on this page, and there will not be one: every machine in this range is built to its own specification. Each one gets its own technical data sheet with its measured performance once it is built — the same document the published ranges carry. Configure the job below and our engineering team comes back with the machine.

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

  • The duty, the temperature or the ambient is outside the published ranges
  • The water would destroy a standard exchanger
  • Your reporting position calls for a particular refrigerant
  • You need BMS or IoT integration as part of the machine
  • You want several machines to behave as one plant

Look at another range if

Applications

Where this range is normally installed.

Textiles
Chemicals
Pharma industry
Food industry
Dairy

Key features

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

Any duty — the standard range stops at 200 kW, this does not

Larger duties are met with a 6- or 8-compressor frame, or with several machines sequenced by an advanced controller so the plant behaves as one machine on one setpoint.

Cabinet in MS with powder coating, or SS 304

Stainless throughout where the cabinet itself has to survive the environment — coastal air, wash-down areas, food and pharma.

BMS integration, IoT monitoring, or both

A point on your own head-end, a dashboard you can open from anywhere, or both together.

Every scroll compressor make

Copeland, Panasonic, Danfoss, GMCC, Invotech, Xecom, Hanbell. If a site standard or a service contract ties you to one, say so.

New-age refrigerants — R1234ze, R515B, and the rest

R410A, R134a, R1234ze, R515B, R245fa, or a cascade of two in series. Delivery temperature sets what is possible; your F-gas and reporting position often set what is preferred.

Condensers to suit the water, not the catalogue

Coil in shell and tube in shell for hard, dirty or fouling water. Titanium for chloride. A stainless-brazed plate exchanger where the water would attack the copper braze in a standard plate unit.

Down to −35 °C ambient

Enhanced vapour injection, or a cascade cycle where the delivery temperature calls for it.

Cascading cycles, and simultaneous heating and cooling

Two refrigerants in series to reach 120 °C from ambient air; or chilled water off the evaporator while the condenser makes hot water, from one machine.

Benefits

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

The duty is worked out before anyone quotes

The configurator computes the kilowatts, the flow, the pipe size and the buffer volume from your own figures. That is the part that usually gets argued about, and it is settled before our team even sees the enquiry.

You get an engineer's answer, not a catalogue's

A machine designed around your process rather than the nearest standard model with a compromise attached.

Nothing is invented to win the enquiry

The configurator quotes no capacity and no COP for a machine that has not been designed, and no price for one that has not been costed. What it does do is flag the conflicts in your configuration before they become a problem on site.

Configure it, and send it to our engineers

The configurator works out the duty from your flow and temperatures, records the build you want, and flags anything in the combination that needs a second look — a refrigerant that will not reach your delivery temperature, a condenser that will not survive your water. It arrives with our engineering team as a complete enquiry.

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.

Why is there no price on this page?
A custom machine is priced from its bill of materials, and that does not exist until the machine has been designed. Any figure we put on a web page would be wrong, and you would quite reasonably hold us to it. Send the configuration and you get a real number.
How large can you actually go?
The published range stops at 200 kW in a single machine. Above that it is a 6- or 8-compressor frame, or several machines sequenced as one plant — which is how any large duty is met, by anybody. Bring us the kilowatts and the arrangement follows.
Can you reach 120 °C from ambient air?
Yes, with a cascade — R410A on the low stage handing over to R245fa on the high stage. A single R245fa cycle is more efficient and simpler, but its compressor window starts at 22 °C evaporating, so it needs a warm water source rather than air.
What is the lead time?
It depends on the machine, and it comes back with the price after the engineering review. A build close to a standard range moves far faster than one that is not.
Do the custom machines get a data sheet?
Yes — every machine we build gets its own technical data sheet with its measured performance, the same as the published ranges. What we will not do is publish one before the machine exists.

Manuals and related ranges

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.