Heat pumps, drawn and built
under one roof
Fourteen years designing and building heat pumps in Maharashtra, and five thousand of them now running across the country. We draw them, build them, test them and stand behind them — so the answer on sizing comes from the people who made the machine.
Heat pump range
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. So start with the temperature, then read down.
Bars show the 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 publish no maximum outlet figure, so they are not on the chart — they are all in the bands below.
Hot water to 60 °C
Sanitary hot water, from a farmhouse to a campus5 ranges
Pool duty
Water held at swimming temperature, year round1 range
Hot water & process to 80 °C
Where a boiler used to be the only answer2 ranges
Industrial process heat
95 – 120 °C, without a boiler2 ranges
Ground coupled
A source that barely moves through the year1 range
Drying
The same cycle, pointed the other way1 range
Storage
Tanks that pair with any source2 ranges
Engineered to order
When the catalogue does not have it1 range
Applications
Hot water, process heat, pool heating and space conditioning — wherever something is burning fuel or running an element to make heat the outside air could have provided.
Hospitality
Hotels, resorts and banquet kitchens
Developers & residential
Towers, apartments and villas
Hospitals & institutions
Wards, laundries, boarding schools
Swimming pools
Commercial pools, spas, therapy pools
Industrial process heat
Plating, CIP, dyeing, jacketed tanks
Geothermal & water source
Heating and cooling together
Working principle
A heat pump moves heat instead of making it. That single difference is why it returns three to four units of heat for one unit of electricity, which nothing that burns or glows can do. The picture first; the four components underneath, for anyone who wants them.
Evaporator
Ambient air — even cold air — boils the refrigerant and gives up its heat.
Compressor
The vapour is compressed, which raises its temperature well above the water you want to heat.
Condenser
The hot vapour gives that heat to your water and condenses back to a liquid.
Expansion valve
Pressure drops, the liquid cools below ambient, and the cycle starts again.
Benefits
Three reasons, in the order customers usually rank them.
Energy savings
A heat pump moves heat rather than making it, so it delivers three to four units of heat for one unit of electricity. Against a geyser or a diesel boiler that is where the running cost collapses.
Sustainable
No flue, no combustion, no fuel on site. Lower emissions than anything that burns, and lower still behind a rooftop solar array.
Low maintenance, long life
No burner to service, no flue to clean, no fuel to handle. Fewer moving parts than a boiler and a working life measured in decades.
Support
Two very different customers, and we are set up for both: the client who wants hot water and one number to call, and the dealer who owns the relationship and needs real engineering behind him.
Turnkey, and one number to call
You are buying hot water, not a heat pump. We take the job from the first site visit to the annual service, and stay the single accountable party the whole way.
- Survey and loadWe measure the real draw-off — occupancy, fittings, peak hours, incoming water temperature — instead of sizing off a rule of thumb.
- System designMachine, storage, pumps, pipe sizing, electricals and plant-room layout, drawn before anything is ordered.
- Supply and installDelivered, positioned, piped, wired and commissioned by our own people or under our supervision.
- Handover and AMCYour staff trained on the controller, readings logged at handover, and a service contract if you want one.
We design it with you, and stand behind it after
You own the customer. We give you the engineering, the paperwork and the service backup so you can quote with confidence and not get caught out on site.
- Design supportSend us the brief and our team sizes it with you — selection, storage, schematic and plant-room layout, under your name.
- Data and submittalsData sheets with capacity at every certified ambient, dimensions, electricals and clearance drawings — whatever the consultant asks for.
- CommercialA current channel-partner price list, quick quotations, and clear lead times you can commit to.
- After-salesSpares and service wherever you sell, plus training for your own engineers so first-line calls stay with you.
Neither promise means anything without people on the ground to keep it. That is what the numbers above are for.
Factory
Made in India is a supply chain here, not a sticker. Our own design team draws the machine and our own line at Asangaon builds it — including the ceramic-lined storage vessels. That control is why a non-standard duty is a conversation rather than a refusal, and why six days is a lead time we can actually offer.
Designed in-house
Our own design team draws the machine, the cabinet and the control. A non-standard duty is a conversation, not a refusal.
Built in-house at Asangaon
Assembly, brazing, wiring and test under one roof in Maharashtra — including the ceramic-lined storage vessels that go with the machines.
Tested before it ships
Every unit is run and logged before it leaves. Rigorous inspection is the only reason a six-day lead time is safe to offer.
Supply chain and logistics
Components from established brands, each with its own test report, and freight partners who move plant rather than parcels.
Built to a sequence,
not to a deadline
A heat pump is a sealed refrigeration circuit, and almost everything that shortens its life is decided during the build — moisture left in the circuit, oxide scale from an unpurged braze, a charge that was guessed. None of it shows on day one. All of it shows in year three. So the line at Asangaon works to a fixed sequence, and nothing moves to the next bench until the last one is signed off.
Goods in
A machine cannot be better than what arrives on the bench.
- Compressor, heat exchanger, coil and controls booked in against the maker’s own test report — no report, no line
- Refrigerant and oil kept sealed and dated; a part-used cylinder does not go back on the shelf
- Copper stored capped, so the bore is still clean and dry when it is cut
Cabinet
The only part of the machine the weather can reach.
- Sheet cut and formed first, powder coated after — so no cut edge is left bare to start rusting
- SS 304 instead where the site is coastal, wash-down, food or pharma
- Anti-vibration mounts under the compressor before a single pipe is run to it
- Drain path and service access set out before the panels go on
Pipework and brazing
Where a refrigeration circuit is won or lost, and the one stage nobody can inspect afterwards.
- Every cut deburred and blown clear before it is joined
- Dry nitrogen flowing through the joint while brazing, so no oxide scale forms inside the circuit to travel to the expansion valve
- Filter drier fitted last, with the circuit open for the shortest time possible
Proving the circuit
Pressure, then vacuum, then weight — in that order, every time.
- Pressure-tested with dry nitrogen and held on a gauge, not glanced at
- Every joint leak-checked before the gas goes anywhere near it
- Evacuated below 500 microns and held with the pump valved off — that is what proves the circuit is dry, not merely empty
- Refrigerant weighed in to the design charge. Never topped up by sight glass
Electrical
Earthed, insulated and sized to the nameplate.
- Continuity and earth bond proved on every unit
- Insulation resistance measured before the machine is first energised
- Contactor, MCB and cable matched to the nameplate current — not to what happened to be on the shelf
- Ferrules and a wiring diagram that matches the machine in front of you, so a service engineer is not guessing
Run test
Every machine runs under load before it is allowed to leave, and every model is measured in our own laboratory before it is sold.
- Run against a real water load, with suction and discharge pressure, superheat, subcool, running current and water in and out all logged
- Safety chain proved by tripping it — high pressure, low pressure, flow switch
- Sensors checked against a reference and the controller set to the order, not to the default
- COP and capacity measured in our own test laboratory at controlled ambient, down to −25 °C — see below
- Test record filed against the serial number, so a call in year three can be answered from the file
Measured in our own test laboratory
A heat pump is easy to rate on a mild day. What a buyer in Shimla, Manali or Leh actually needs to know is what the machine does when it is freezing, and that is a question you can only answer by putting the machine in a chamber and taking the ambient down. Ours reaches −25 °C — the stated operating limit of the EVI range — so the coldest condition we sell a machine at is one we can also measure it at, rather than one taken on trust from a compressor catalogue.
What leaves with the machine
A serial number, a nameplate that matches the machine, a wiring diagram of the unit in front of you, and the test record from its own run. That record is why a fault three years out is a phone call rather than an investigation — and why a six-day lead time is a promise we can keep, because a machine is never held back at dispatch to be finished.
People
Forty-seven people, most of them in Maharashtra. Two of them run the company and are easy to reach; the rest are the reason an order gets designed, built, delivered and serviced.
Kashyap Anandpara
Founded Sunniva in 2012 to bring properly engineered heat pumps to the Indian market. Leads product, engineering and the long-term direction of the company.
View LinkedIn profileSamkit Shah
Runs domestic and international sales, channel partnerships and project execution, from first enquiry through to commissioning.
View LinkedIn profileWhat our customers say, in their own words
Our reviews live on Google, where we cannot edit them and neither can anyone else. Scan the code or follow the link to read them in full — the good ones and any that are not.
Scan to readNot sure which model you need?
Tell our calculator about the job rather than the machine — the building, the pool or the process — and it works backwards to the plant. No form, no email wall, no salesman in the middle.
Describe the job
Occupancy, litres, pool size or process temperature. Whatever you actually know.
It sizes the plant
Duty in kilowatts at your design temperature, and the storage that goes with it.
It names the model
The Sunniva machine that covers it — and what it costs to run against what you burn today.
Scan, tap, or just call
Sales and service both answer on WhatsApp. Every code below works from a phone camera and as a link from a desktop.
Heat pumps, drawn and built
under one roof
Fourteen years designing and building heat pumps in Maharashtra, and five thousand of them now running across the country. We draw them, build them, test them and stand behind them — so the answer on sizing comes from the people who made the machine.
Heat pump range
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. So start with the temperature, then read down.
Bars show the 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 publish no maximum outlet figure, so they are not on the chart — they are all in the bands below.
Hot water to 60 °C
Sanitary hot water, from a farmhouse to a campus5 rangesPool duty
Water held at swimming temperature, year round1 rangeHot water & process to 80 °C
Where a boiler used to be the only answer2 rangesIndustrial process heat
95 – 120 °C, without a boiler2 rangesGround coupled
A source that barely moves through the year1 rangeDrying
The same cycle, pointed the other way1 rangeStorage
Tanks that pair with any source2 rangesEngineered to order
When the catalogue does not have it1 rangeApplications
Hot water, process heat, pool heating and space conditioning — wherever something is burning fuel or running an element to make heat the outside air could have provided.
Hospitality
Hotels, resorts and banquet kitchens
Developers & residential
Towers, apartments and villas
Hospitals & institutions
Wards, laundries, boarding schools
Swimming pools
Commercial pools, spas, therapy pools
Industrial process heat
Plating, CIP, dyeing, jacketed tanks
Geothermal & water source
Heating and cooling together
Working principle
A heat pump moves heat instead of making it. That single difference is why it returns three to four units of heat for one unit of electricity, which nothing that burns or glows can do. The picture first; the four components underneath, for anyone who wants them.
Evaporator
Ambient air — even cold air — boils the refrigerant and gives up its heat.
Compressor
The vapour is compressed, which raises its temperature well above the water you want to heat.
Condenser
The hot vapour gives that heat to your water and condenses back to a liquid.
Expansion valve
Pressure drops, the liquid cools below ambient, and the cycle starts again.
Benefits
Three reasons, in the order customers usually rank them.
Energy savings
A heat pump moves heat rather than making it, so it delivers three to four units of heat for one unit of electricity. Against a geyser or a diesel boiler that is where the running cost collapses.
Sustainable
No flue, no combustion, no fuel on site. Lower emissions than anything that burns, and lower still behind a rooftop solar array.
Low maintenance, long life
No burner to service, no flue to clean, no fuel to handle. Fewer moving parts than a boiler and a working life measured in decades.
Support
Two very different customers, and we are set up for both: the client who wants hot water and one number to call, and the dealer who owns the relationship and needs real engineering behind him.
Turnkey, and one number to call
You are buying hot water, not a heat pump. We take the job from the first site visit to the annual service, and stay the single accountable party the whole way.
- Survey and loadWe measure the real draw-off — occupancy, fittings, peak hours, incoming water temperature — instead of sizing off a rule of thumb.
- System designMachine, storage, pumps, pipe sizing, electricals and plant-room layout, drawn before anything is ordered.
- Supply and installDelivered, positioned, piped, wired and commissioned by our own people or under our supervision.
- Handover and AMCYour staff trained on the controller, readings logged at handover, and a service contract if you want one.
We design it with you, and stand behind it after
You own the customer. We give you the engineering, the paperwork and the service backup so you can quote with confidence and not get caught out on site.
- Design supportSend us the brief and our team sizes it with you — selection, storage, schematic and plant-room layout, under your name.
- Data and submittalsData sheets with capacity at every certified ambient, dimensions, electricals and clearance drawings — whatever the consultant asks for.
- CommercialA current channel-partner price list, quick quotations, and clear lead times you can commit to.
- After-salesSpares and service wherever you sell, plus training for your own engineers so first-line calls stay with you.
Neither promise means anything without people on the ground to keep it. That is what the numbers above are for.
Factory
Made in India is a supply chain here, not a sticker. Our own design team draws the machine and our own line at Asangaon builds it — including the ceramic-lined storage vessels. That control is why a non-standard duty is a conversation rather than a refusal, and why six days is a lead time we can actually offer.
Designed in-house
Our own design team draws the machine, the cabinet and the control. A non-standard duty is a conversation, not a refusal.
Built in-house at Asangaon
Assembly, brazing, wiring and test under one roof in Maharashtra — including the ceramic-lined storage vessels that go with the machines.
Tested before it ships
Every unit is run and logged before it leaves. Rigorous inspection is the only reason a six-day lead time is safe to offer.
Supply chain and logistics
Components from established brands, each with its own test report, and freight partners who move plant rather than parcels.
Built to a sequence,
not to a deadline
A heat pump is a sealed refrigeration circuit, and almost everything that shortens its life is decided during the build — moisture left in the circuit, oxide scale from an unpurged braze, a charge that was guessed. None of it shows on day one. All of it shows in year three. So the line at Asangaon works to a fixed sequence, and nothing moves to the next bench until the last one is signed off.
Goods in
A machine cannot be better than what arrives on the bench.
- Compressor, heat exchanger, coil and controls booked in against the maker’s own test report — no report, no line
- Refrigerant and oil kept sealed and dated; a part-used cylinder does not go back on the shelf
- Copper stored capped, so the bore is still clean and dry when it is cut
Cabinet
The only part of the machine the weather can reach.
- Sheet cut and formed first, powder coated after — so no cut edge is left bare to start rusting
- SS 304 instead where the site is coastal, wash-down, food or pharma
- Anti-vibration mounts under the compressor before a single pipe is run to it
- Drain path and service access set out before the panels go on
Pipework and brazing
Where a refrigeration circuit is won or lost, and the one stage nobody can inspect afterwards.
- Every cut deburred and blown clear before it is joined
- Dry nitrogen flowing through the joint while brazing, so no oxide scale forms inside the circuit to travel to the expansion valve
- Filter drier fitted last, with the circuit open for the shortest time possible
Proving the circuit
Pressure, then vacuum, then weight — in that order, every time.
- Pressure-tested with dry nitrogen and held on a gauge, not glanced at
- Every joint leak-checked before the gas goes anywhere near it
- Evacuated below 500 microns and held with the pump valved off — that is what proves the circuit is dry, not merely empty
- Refrigerant weighed in to the design charge. Never topped up by sight glass
Electrical
Earthed, insulated and sized to the nameplate.
- Continuity and earth bond proved on every unit
- Insulation resistance measured before the machine is first energised
- Contactor, MCB and cable matched to the nameplate current — not to what happened to be on the shelf
- Ferrules and a wiring diagram that matches the machine in front of you, so a service engineer is not guessing
Run test
Every machine runs under load before it is allowed to leave, and every model is measured in our own laboratory before it is sold.
- Run against a real water load, with suction and discharge pressure, superheat, subcool, running current and water in and out all logged
- Safety chain proved by tripping it — high pressure, low pressure, flow switch
- Sensors checked against a reference and the controller set to the order, not to the default
- COP and capacity measured in our own test laboratory at controlled ambient, down to −25 °C — see below
- Test record filed against the serial number, so a call in year three can be answered from the file
Measured in our own test laboratory
A heat pump is easy to rate on a mild day. What a buyer in Shimla, Manali or Leh actually needs to know is what the machine does when it is freezing, and that is a question you can only answer by putting the machine in a chamber and taking the ambient down. Ours reaches −25 °C — the stated operating limit of the EVI range — so the coldest condition we sell a machine at is one we can also measure it at, rather than one taken on trust from a compressor catalogue.
What leaves with the machine
A serial number, a nameplate that matches the machine, a wiring diagram of the unit in front of you, and the test record from its own run. That record is why a fault three years out is a phone call rather than an investigation — and why a six-day lead time is a promise we can keep, because a machine is never held back at dispatch to be finished.
People
Forty-seven people, most of them in Maharashtra. Two of them run the company and are easy to reach; the rest are the reason an order gets designed, built, delivered and serviced.
Kashyap Anandpara
Founded Sunniva in 2012 to bring properly engineered heat pumps to the Indian market. Leads product, engineering and the long-term direction of the company.
View LinkedIn profileSamkit Shah
Runs domestic and international sales, channel partnerships and project execution, from first enquiry through to commissioning.
View LinkedIn profileWhat our customers say, in their own words
Our reviews live on Google, where we cannot edit them and neither can anyone else. Scan the code or follow the link to read them in full — the good ones and any that are not.
Scan to readNot sure which model you need?
Tell our calculator about the job rather than the machine — the building, the pool or the process — and it works backwards to the plant. No form, no email wall, no salesman in the middle.
Describe the job
Occupancy, litres, pool size or process temperature. Whatever you actually know.
It sizes the plant
Duty in kilowatts at your design temperature, and the storage that goes with it.
It names the model
The Sunniva machine that covers it — and what it costs to run against what you burn today.
Scan, tap, or just call
Sales and service both answer on WhatsApp. Every code below works from a phone camera and as a link from a desktop.