Part	Example	What it means
The number	SE-AH-25U	Heating capacity in kilowatts, at that range's own rated test point. Ranges are rated at different conditions, so a 25 in one family and a 25 in another are not measured the same way — each model's data sheet states its own.
M	SE-AH-7M	Monoblock: the water circulation pump is built in, so installation is pipe it and plug it in.
U and V	SE-AH-25U · SE-AH-140V	The cabinet the machine is built in. V is the V-coil frame used on the larger duties; U is the smaller box.
S, with a tank volume	SE-AH-5\|300S	A split unit — the compressor outdoors, the cylinder indoors. The number after the bar is the cylinder in litres.
A second number	SE-AH-6-420	On an all-in-one, the volume of the built-in tank in litres. The machine and its cylinder are one cabinet.
C	SE-SHT-50VC	Cascade: two refrigerants in series, so the machine reaches its delivery temperature from ambient air rather than needing a warm source.

Products

The complete range of Sunniva heat pumps

Q: What do you need from me to size it and quote?

Four things get you a real answer rather than a range: the water temperature you need at the outlet, the daily volume or the process duty, the draw-off pattern — whether it is spread through the day or lands in two hours — and the ambient the machine has to work in, including the coldest morning of the year. The draw-off pattern is the one most often left out and the one that most often changes the answer, because it decides how much of the load is storage and how much is machine. Run the calculators first if you would rather arrive with a number, or send us the four figures and we will size it — and say so if a smaller machine will do.

From a warm pool to 120 °C process heat

Fifteen categories on one ladder. Every Sunniva machine does the same thing — moves heat instead of burning something to make it — and what separates them is how hot they will take the water, and how much of it. Start with the temperature you need.

45 – 120 °CWater outlet span

270 kWLargest single machine

84+SKUs in heat pumps

Since 2012Manufacturing & export

The range, by temperature

Published maximum water outlet

Each bar is the hottest water that category is published to deliver. Darker means hotter. Select a bar to open that range.

Bars show maximum water outlet temperature only; capacity is printed beside them, not plotted. All in One, Monoblock, Domestic Split Unit, Geothermal, Customized, the dryer and the storage tanks are not on the chart — they publish no maximum water outlet figure, and the dryer moves heat into air rather than into water. Every figure also appears in the list below.

All fifteen categories

Grouped by duty

Sanitary hot water first, then pool duty, then the ranges that go hotter — followed by the ground-coupled range, the dryer and the storage tanks that pair with any of them.

Hot water to 60 °C

Sanitary hot water, from a farmhouse to a campus 5 categories

All in One Heat Pump

Heat pump and enamelled tank in a single cabinet — one unit, one connection, nothing to plumb between.

Bungalows · Villas · Farmhouses · Domestic

Water outlet75 °C

Range150 – 500 L

Monoblock Heat Pump

Compact monoblock with the circulation pump built in. Heating through winter, cooling in summer as an option.

Hotels · Motels · Boarding houses · Solar backup

Water outlet60 °C

RangeSE-AH-4M · 5M · 7M · 10M

Domestic Split Unit

Outdoor unit outside, cylinder indoors, refrigerant between them — so nothing hot runs through the wall and the cylinder can sit where the bathroom is.

Apartments · Villas · Retrofit · Domestic

Water outlet60 °C

Range100 – 500 L Storage

Commercial Heat Pump

The workhorse range for bulk sanitary hot water, from a small hotel block to a full campus.

Hotels · Resorts · Hospitals · Schools · Apartments

Water outlet60 °C

Range14 – 300 kW

EVI Heat Pump

Enhanced vapour injection holds 60 °C output with the ambient at −25 °C, and needs no auxiliary heater to do it.

Hotels · Resorts · Hospitals · Schools · Cold climates

Water outlet60 °C

Range10 – 430 kW

Pool duty

Water held at swimming temperature, year round 1 category

Swimming Pool Heat Pump

Titanium-in-PVC-shell exchanger built for chlorinated water. Heating in winter, cooling in summer as an option.

Swimming pools · Spas · Jacuzzis · Physiotherapy

Water outlet45 °C

Range17 – 240 kW

Hot water & process to 80 °C

Where a boiler used to be the only answer 2 categories

High Temperature Heat Pump

80 °C sanitary and process water without a boiler, across an ambient range of 7 – 43 °C.

Laundries · Commercial kitchens · Pharma · Process

Water outlet80 °C

Range15 – 270 kW

Water Source Heat Pump

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

Hotels · Resorts · Hospitals · Schools · Villas

Water outlet80 °C

Range50 – 250 kW

Industrial process heat

95 – 120 °C, without a boiler 2 categories

Super High Temperature Heat Pump

Process heat to 95 °C on low-GWP R515B, taken from ambient air alone — no waste heat needed.

Textile · Chemical · Pharma · Food · Dairy

Water outlet95 °C

Range18 – 102 kW

Ultra High Temperature Heat Pump

120 °C process water on R245fa, in two cycles — one fed by waste heat, one by ambient air.

Textile · Chemical · Pharma · Food · Dairy

Water outlet120 °C

RangeFrom 25 kW

Ground coupled

A source that barely moves through the year 1 category

Geothermal Heat Pump

Ground-coupled exchange against a temperature that stays near-constant, summer or winter.

Space conditioning · Water heating · Process

Water outlet60 °C

RangeHeating · cooling · process

Drying

Heat pumps that take the water out instead of putting it in 1 category

Heat Pump Dryer

The same closed cycle, pointed the other way: it dries the air, warms it and sends it back round, so the heat is recovered instead of vented up a flue.

Spices · Food · Agri produce · Process

New range. Full specification is being finalised.

Water outlet65 °C

RangeSpecification shortly

Storage

Tanks to pair with any source 2 categories

Glass Lined Tanks

Vitreous enamel fused to steel at 900 °C, CFC-free PU insulation, Incoloy 800 element and a magnesium anode.

Heat pump · Solar · Gas · Standalone electric

Water outletNA

Range300 – 5,000 L Storage

Ceramic Lined Tanks

Ceramic-coated against corrosion, 50 mm rockwool under aluminium cladding. Pressurised or non-pressurised.

Heat pump · Solar · Industrial storage

Water outletNA

Range1,000 – 10,000 L Storage

Engineered to order

When the catalogue does not have it 1 category

Customized Heat Pump

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.

Industrial · Process · Anything the thirteen do not cover

Water outletUp to 120 °C

RangeAs Designed

How the model numbers work

Read any code without ringing us

Every Sunniva model number is built the same way, so a code on a drawing or a purchase order tells you what the machine is before you look anything up.

SESunniva Encon

–

EVIthe family

–

46kilowatts

Ucabinet

An SE-EVI-46U is a Sunniva enhanced-vapour-injection machine of 46 kW in the U cabinet. Nothing in the code is decorative.

Code	Family	Example	What it means
AH	Air to water	SE-AH-25U	The main line: an air-source machine making hot water. Also carries the monoblock and all-in-one variants, marked by their own suffixes below.
SP	Swimming pool	SE-SP-50U	Titanium condenser throughout, because chlorinated water destroys anything else.
EVI	Enhanced vapour injection	SE-EVI-46U	A second injection port into the compressor, which is what keeps capacity up when the air goes cold.
HT	High temperature	SE-HT-29U	Process water to 80 °C.
SHT	Super high temperature	SE-SHT-50V	To 95 °C on R515B, from ambient air.
UHT	Ultra high temperature	SE-UHT-45V	To 120 °C. The cascade build, which takes its heat from ambient air.
WWUHT	Water to water, ultra high temperature	SE-WWUHT-50	The single-cycle 120 °C machine. Water on both sides, so it needs a warm source — which is exactly what the WW says.
GL	Glass lined tank	SE-GL-300	Storage, not a heat pump. The number is litres.

The rest of the code

Part	Example	What it means
The number	SE-AH-25U	Heating capacity in kilowatts, at that range's own rated test point. Ranges are rated at different conditions, so a 25 in one family and a 25 in another are not measured the same way — each model's data sheet states its own.
M	SE-AH-7M	Monoblock: the water circulation pump is built in, so installation is pipe it and plug it in.
U and V	SE-AH-25U · SE-AH-140V	The cabinet the machine is built in. V is the V-coil frame used on the larger duties; U is the smaller box.
S, with a tank volume	SE-AH-5\|300S	A split unit — the compressor outdoors, the cylinder indoors. The number after the bar is the cylinder in litres.
A second number	SE-AH-6-420	On an all-in-one, the volume of the built-in tank in litres. The machine and its cylinder are one cabinet.
C	SE-SHT-50VC	Cascade: two refrigerants in series, so the machine reaches its delivery temperature from ambient air rather than needing a warm source.

Capacities are stated at each range’s own rated test condition, and those conditions differ between ranges — a swimming pool machine and an ultra high temperature machine are not measured against the same air or the same water. Every model’s data sheet states the condition its figures were taken at.

Before you choose

The questions that come before a range does

Each range page answers the questions about that machine. These are the ones that need more than one range to answer.

Which range do I need?

Start with the water temperature you need at the outlet, not with the kilowatts — that is what decides the range, and the chart at the top of this page is ordered by it. Up to 60 °C is sanitary hot water; 80 °C covers laundry, kitchen and most process duty; 95 and 120 °C are the industrial ranges that replace a fired boiler. Pool water is its own range because chlorinated water needs a titanium exchanger. Once the temperature has picked the range, the duty picks the model — and the calculators will do that part from your own figures.

What is the difference between the All-in-One, the Monoblock and the Split?

All three make sanitary hot water and none of them goes above the same temperature band, so the choice is about where the parts sit rather than about performance. The All-in-One puts the heat pump and an enamelled tank in one cabinet — one unit, one connection, nothing to plumb between. The Monoblock is the heat pump alone with the circulation pump already inside it, so it pairs with whatever storage is already there. The Split keeps the outdoor unit outside and the cylinder indoors with refrigerant running between them, so no hot water crosses the wall and the cylinder can sit near the bathrooms. Retrofits usually end up at the split for that last reason alone.

Can you build something that is not on this list?

Yes — that is the Customized range, and it is last on the page on purpose: it is worth exhausting the published ranges first, because a catalogue machine has a data sheet behind it and a designed one does not yet. It exists for a duty above the standard range, a water that would attack an ordinary exchanger, an ambient nobody designs for, or a refrigerant your own reporting position requires. The configurator records what you need and works out duty, flow and pipe size from your figures. It quotes no capacity, no COP and no price, because there is no sheet to quote them from until the machine is designed.

What can I change on a standard machine?

Four things, on every range except the All-in-One and the Split: the coupling type on the water connections, threaded, flanged or grooved; the casing, stainless steel or powder-coated; the circulation pump, which can be built into the unit instead of sitting in the plant room; and the condenser, stainless steel or copper in place of the standard build. None of those is the standard machine and none is included in the specification tables, so ask at enquiry and have it confirmed in writing on the order acknowledgement — price, lead time and weight can all move with it. Two exceptions worth knowing: the pool range is not offered with a copper condenser, because chlorinated water attacks copper, and the monoblocks already have the pump inside.

Where do the figures on this site come from?

Every capacity, COP, flow rate and dimension published here is taken from that model's own data sheet, and nothing is published that a data sheet does not state. Where a figure has not been measured it is left out rather than interpolated — which is why some models show fewer test conditions than others, and why a range under development says so instead of carrying a provisional number. Capacity is quoted at stated ambient and outlet conditions, not at the single most flattering one; the calculators work from the same published figures, so a number they give you can be traced back to a sheet.

What do you need from me to size it and quote?

Four things get you a real answer rather than a range: the water temperature you need at the outlet, the daily volume or the process duty, the draw-off pattern — whether it is spread through the day or lands in two hours — and the ambient the machine has to work in, including the coldest morning of the year. The draw-off pattern is the one most often left out and the one that most often changes the answer, because it decides how much of the load is storage and how much is machine. Run the calculators first if you would rather arrive with a number, or send us the four figures and we will size it — and say so if a smaller machine will do.

Not sure which rung you are on?

Tell us the draw-off pattern, the water temperature you need and the ambient it has to work in. We will size it — and say so if a smaller machine will do.

Talk to an engineer Size it yourself