2100 Compact
HP GREEN Inverter Pro Back

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Swimming pool heat pumps

HP GREEN Inverter Pro2100 Compact

HP BLACK Inverter |
HP GREEN Inverter Pro |
50-450kW T3 Tropical / Winter in 50Hz or 60Hz |
Tropical kit | up to 800 m³
Pool size
105 m³
  • Automatic cooling/heating
  • Full stepless inverter DC compressor
  • Full high-end inverter with best equipment and features (exceeding Full low-end inverter and step inverter)
  • Heat pump of the highest quality and sophisticated inverter electronics
  • Built in WiFi module for mobile phone control as standard
  • Winter module for year-round use as standard
  • With soft start which lowers the electricity needs, prolongs product life and avoids current peaks
  • Rapid defrosting of the ice, making it more efficient
  • With SuperSilent mode with power limited to 65% making it the quietest inverter pool heat pump
  • Air exchanger in Goldfin offering more hydrophobic surface and better heat Exchange efficiency
  • Remote control system, which enables other control system to control heat pump
  • New environment-friendly refrigerant R32
Where to buy
Size guide
Pool size Summer season with cover/without cover
Maximum pool size for Winter use
Heating capacity summer Air 27°C, Water 27°C
Heating capacity Spring/Autum Air 15°C Water 26°C
Heating capacity winter Air -15°C Water 27°C
Cooling capacity Summer Air 35°C Water 28°C
Water temperature settings min-max
HP 1100 GREEN Inverter Pro Ideal for 30m³ Max. pool size 65m³ 20m³ 10.8kW | 14-6.4 COP 7.7kW | 7.5-4.5COP 3.2kW 4.5kW +12°C ~ +40°C
HP 1500 GREEN Inverter Pro Ideal for 40m³ Max. pool size 80m³ 30m³ 15.0 kW | 15-6.5 COP 10.5kW | 7.7-4.6 COP 3.8kW 6.7kW +12°C ~ +40°C
HP 1700 GREEN Inverter Pro Ideal for 45m³ Max. pool size 95m³ 40m³ 17.0 kW | 15-6.5 COP 11-9W | 7.5-4.6 COP 4.5kW 7.5kW +12°C ~ +40°C
HP 2100 GREEN Inverter Pro Ideal for 50m³ Max. pool size 105m³ 50m³ 21.0 kW | 14.8-6.4 COP 14.5 kW | 7.1-4.6 COP 5.2kW 9.5kW +12°C ~ +40°C
HP 2700 GREEN Inverter Pro Ideal for 60m³ Max. pool size 135m³ 60m³ 27.5 kW | 15-6.5 COP 18.0kW | 7.5-4.6 COP 6.5kW 11.9kW +12°C ~ +40°C

Not sure which Heat Pump

should you choose?
How choose a heat pump?

Key data

Heating Output | HP GREEN Inverter Pro - Microwell
Heating Output
14.5-24.2 kW
Cooling Output | HP GREEN Inverter Pro - Microwell
Cooling Output
9.5 kW
COP | HP GREEN Inverter Pro - Microwell
9.5 kW
Average COP | HP GREEN Inverter Pro - Microwell
Average COP
Operating Range | HP GREEN Inverter Pro - Microwell
Operating Range
-15°C to +43°C
Expansion | HP GREEN Inverter Pro - Microwell
DC compressor | HP GREEN Inverter Pro - Microwell
DC compressor
Full Stepless DC inverter compressor
Fan | HP GREEN Inverter Pro - Microwell
DC Inverter

Customize your

Heat pump
HP 2100 GREEN Inverter Pro Compact

Why Inverter from Microwell?
  1. We offer probably the most up-to-date cutting edge technology. This is called High End Full Stepless Inverter. Amongst the sea of inverters this is like no one other.
  2. We equip the water heat exchanger with the best titanium class Grade 1 ASTM265 and the highest volume of titanium, leading to biggest heat exchange surface (up to 1.4m2).
  3. We use currently the best hydrophobic and protection coating with goldish look called GOLDFIN. Heat pump during its operations condensates considerable amount of water on its cooler fins, the more phobic material the better for the heat pump. Why protection? Because salt present in sea wind or acid rains damage other types of heat pumps without GoldFin. But GoldFin is able to resist these elements.
  4. We not only say that our heat pumps are to minus 10 degrees but we also equip the pumps with needed hardware to do so. The compressor is preheated and condensate tray is heated so the pump never freezes.
  5. With the pump you receive as standard package without any surchages WIFI based on newest IOT platfrom TUYA and remote control contact.
  6. SuperSilent+ mode limiting the capacity of the heat pump to 65% when activated. This will ensure your desired water temperature at such a low noise level that you can essentially sleep in the room next to the heat pump.
  7. Proved performance and durability by customers across 20 countries and counting.

The highest HIGH-END Inverter pool heat pump - EXPLORE MORE

Inverter Technology for Unmatched Efficiency

Our HP Black 900 Inverter Compact is engineered with cutting-edge inverter technology, setting it apart from traditional pool heaters. This intelligent system constantly adapts its heating output to match your pool's specific needs. As a result, you'll enjoy optimal water temperature without unnecessary energy consumption. Experience the pinnacle of energy efficiency, which translates to significant cost savings over time.

Space-Saving Design for Versatile Installation

Limited space? No problem. The HP Black 900 Inverter Compact boasts a compact and space-saving design that makes installation a breeze, even in confined areas. Whether you have a cozy backyard or a commercial pool facility, our heat pump fits seamlessly into your setup. Say goodbye to space-related constraints and hello to year-round pool enjoyment.

Discover GREEN

Inverter Split
HP 2100 GREEN Inverter Pro Split

Whisper-Quiet Operation for Serene Relaxation

Poolside tranquility is a must for any oasis. Our heat pump's advanced engineering ensures whisper-quiet operation. You can revel in the soothing sounds of water and nature without the disruptive noise commonly associated with conventional heating systems. It's the perfect complement to your serene poolside retreat.

User-Friendly Controls for Effortless Management

Take control of your pool's temperature with unparalleled ease. The intuitive controls of the HP Black 900 Inverter Compact simplify temperature adjustments. The digital display provides real-time feedback, keeping you informed about your pool's status at all times. Managing your pool's comfort has never been this effortless.

GoldFin: Your Timeless Guardian

You ever wondered why heat pumps look blue or goldish (yellow) from the back? This the protection layers of the aluminum fins of the air exchanger. In Microwell we exclusively apply epoxy based GoldFin protection for all our products because it is just the best. GoldFin creates hydrophobic layer which repels water. In this case the heat pump in colder weather will freeze lot later than standard Bluefin and will defreeze itself faster than Bluefin. This will provide simply more heating. GoldFin is also superior in livelihood of the unit in salty air (coastal application) or sand. It will simply last longer.

Titanium Grade1 – no compromise

In Microwell we understand that livelihood of a heat pump is key factor when deciding for its purchase. Titanium Grade 1 ASTM B265M consists of at least 99.2% titanium, with small amounts of oxygen, iron and other compounds (carbon, nitrogen and hydrogen) up to 0.8%. The low impurity levels contribute to its exceptional corrosion resistance. This material also leaves no trace, no odor and is neutral to its environment. All Microwell heat pumps are equipped exclusively with this type of titanium in their water exchangers.

Massive heat exchange area – up to 1.2m2

We apply extra surface of up to 1.2m2 of corrugated (twisted) titanium spiral. You can’t go around the physics, you can embrace it. The extensive heat exchange surface provides unprecedented performance and livelihood for each single Microwell heat pump.

Salt + Chlorine + UV + Electrolysis

Each Microwell heat pump is designed to work with various kinds of water, including those treated with chlorine, salt, electrolysis, sulfur or UV. This is mainly thanks to exclusive Titanium Grade1 ASTM B265M titanium tube material used inside water heat exchanger. Standard stainless steel or copper exchangers used in domestic heat pumps would typically last 1 month in pool application with water treated by chlorine. With Microwell heat pump you can be sure that materials used are designed for long harmless operations.

Super silent mode to please your ear

GREEN INVERTER PRO line, Microwell 4-season pool heat pump, has been designed to comply with the most rigorous noise standards. Unlike the industry that programs silent modes for 80% heat pump’s capacity, in Microwell we went an extra mile and offer super silent mode by limitation to 65%. This settings not only sounds similarly as a hum of home refrigerator but also provides little extra to already superb efficiency. Your ear and wallet will be both pleased.

RS-485 Modbus

RS-485, in the context of the Modbus communication protocol, is a widely used interface for industrial control systems and automation applications. RS-485 is a standard for serial communication that allows multiple devices to communicate with each other over long distances. Each Microwell pool heat pump is equipped with RS-485 port based on ModBus protocol. You can program the heat pump to be voice-controlled and also integrated into your smart house control system. The distance to your Microwell heat pump has never been so close.

4-season heat pump

GREEN INVERTER PRO Microwell pool heat pump line has been specifically designed for whole year (4-season) operations for an ambient air temperature range from -15°C to +43°C. It can heat in harsh winter or cool in peak summer. In Microwell we do not only write statements on paper, but equip heat pumps with necessary HW and SW so the heat pump can truly perform the job its user expects.

Secret behind -15°C winter heating

Compressor oil tank pre-heat keeps the oil viscosity at appropriate levels all-the-time. The start and overall health of the compressor is thus not affected by cold weather.

Condensate tray is heated by electrical resistance heater when needed to ensure proper condensate drain. Whole system is reversible, i.e. allowing hot gases to be pushed into air exchanger thus effectively and quickly de-freezing the whole heat pump. GoldFin hydrophobic protection of air exchanger aluminum fins helps to keep the exchanger as much dry as possible. And finally metal grill ensures no junks of ice will harm your heat pump.

Technical data and more

If you want to know more just click

Microwell swimming pool heat pumps are designed for heating or cooling the water in pools and hot tubs at minimum operational costs.

HP 2100 Green Inverter Pro is a powerful heat pump suited for pools up to 105m3 in volume.

HP 2100 Green Inverter Pro provides 24.2 kW of heating capacity at conditions of air temperature 27°C, water temperature 15°C and air humidity 80%. This heat pump can provide up to can provide up to 21kW of heating at typical seaside conditions of air temperature 26°C, water temperature 26°C and air humidity 80%. At typical inland conditions of air temperature 26°C, water temperature 26°C and air humidity 63% the heat pump provides with 14.5 kW.

HP Inverter technology

Inverter technology enables powerful yet quiet performance of Microwell heat pumps, while minimising the energy consumption. New Microwell models come exclusively with R32 gas.

Heat and cool with one device. Heat pump HP 2100 Green is designed for heating and cooling. The control is very simple. When you set your desired water temperature, the heat pump will automatically heat or cool to keep your desired temperature. HP 2100 Green Inverter Pro provides with up to 9.5 kW cooling output.

Highly efficient ecological refrigerant

Reducing Global Warming & Ozone Layer Depletion by HP production The quantity of R32 refrigerant used is significantly lower as compared to the R410A refrigerant. Consequently, this results in decreasing the potential of global warming and minimal depletion of the ozone layer. That´s why Microwell developed the new generation of swimming pool heat pumps, working on the principles of R32 refrigerant with higher capacity.

High efficiency. Swimming pool heat pump is designed to compensate higher investment costs by very low operational costs compared to electric or gas heater. Microwell heat pumps are designed for a maximum efficiency reaching COP values up to 7. Efficiency of the heat pump is a ratio between power consumption (energy you pay) and actual heating or cooling output (energy you receive). With electric heater, the ratio is 1=1, i.e. what you consume and pay you get in the form of heat. Gas heaters may reach efficiency of 1.3. Heat pump’s COP of 7 means that you pay for 1kWh and you get 7kWh of energy. In cooling mode the heat pump provides with solid ratio of 4. Heat pump’s advantage is that it is independent from sun, day or night and weather. Currently the heat pump is the most efficient way of water conditioning in pools or hot tubs.

How is heat pump so efficient? Microwell HP 2100 Green heat pump is able to extract the heat/cold that is present in ambient environment and leveraged pass it into the pool water. If you take your refrigerator, it creates cold inside the fridge by releasing the heat from the back. Heat pump takes the heat (energy or calories) from ambient air and transforms it into the water. The surrounding air cools down in the process. When working in cooling mode, the excessive heat from water is passed into surrounding air. When heating, higher the ambient air temperature is, more free energy can the heat pump extract and thus reach higher efficiency. At favorable conditions you pay around 15% of heat, i.e. 85% of heat is free. Microwell heat pump is built on currently the most eco-friendly refrigerant R32.

Extraordinary INVERTER line. Microwell INVERTER swimming pool heat pumps provide warm pool:

  • At lowest cost possible
  • In shortest possible time
  • With lowest noise possible

HP 2100 Green Microwell swimming pool heat pumps can be connected to existing water system (filtration) or it can have an individual circulation pump. A swimming pool heat pump needs continuous water flow to heat or cool. The machine tells the circulation pump when heat pump needs to heat or cool. The circulation is turned on and off according to this request. Microwell applies specially designed software that will sample the water and also put the whole system into sleep for the time when heating or cooling is not required. This saves precious energy and results in lower operational costs of the pool.

Full year heating. HP 2100 Green is also designed for a full year heating, particularly winter time. Typical winter can experience air temperatures -15°C. Heat pump thus needs to be protected against possible frost damage and equipped with systems that will keep the heat pump’s performance at desired level.

Long livelihood. Microwell swimming pool heat pumps are designed for 15+ years livelihood. The product requires minimal maintenance. You only need to ensure cleanness of air exchanger from leaves, dust and other particles.

Titanium. Amount of titanium is very important to a swimming pool heat pump. The amount talks about the actual heat transfer area, i.e. power and efficiency of each heat pump. Microwell is proudly using 40% more titanium in heat pumps’ water exchangers. This maximizes the performance and efficiency COP&EER far ahead of others. HP 2100 Green uses 0.9m2 of titanium whereas others use less than 0.25m2.

Microwell heat pump is only 758mm high, 961mm wide and 420mm deep. This saves space and does not protrude in the garden.

Microwell HP 2100 Green consumes on average 3.15kW while heating to 14.5 kW (air temperature 26°C, water temperature 26°C, relative humidity 63%) at 45.9dB(A) only confirms how well designed and manufactured the pumps are.

Extra features. Microwell is continuously focusing on customers’ demands and wishes. Each heat pump is equipped with special features unique about Microwell heat pumps.

antiVIBRATION+ offering special set of mounting silent blocks eliminating excessive vibration and noise.

ultraQUIET+ offering exceptional silence of the unit eliminating any excessive noise.

easyINSTALL+ Heat pump is designed as plug-n-play device.

WINTER module allowing the pump to work down to -15°C of ambient air temperature.

Built in WiFi module.

Remote control system, which enables other control system to control heat pump.

Condensate tray defrost and Heat exchanger frost protection to complete the winter package and operations down to -15°C of ambient air temperature.

Typically, the unit is in stock near you. Due to many different ways the unit can be tailored on demand, it may take up to 10 days to deliver the unit to you.

If you need assistance in sizing the right heat pump for you please use our online HOW TO CHOOSE tool

Or click on SELECT THE RIGHT HEAT PUMP on the left side of your screen.

HP 2100 GREEN INVERTER PRO COMPACT product components

Offering an in-depth look at the HP 2100 Green Inverter Pro Compact, explore its intricate components for a comprehensive understanding of its advanced features.

Smart INVERTER App Operation Video:

Technical data

Pool capacity (m³ / cover / no cover)
Heating capacity (kW / A27 / W27 / RH80%)
Heating capacity (kW / A15 / W26 / RH70%)
Cooling capacity (kW / A35 / W28 / RH80%)
Rated input power (kW)
Operating air temperature (°C)
Water flow (m³h / kPa)
Power supply
Heat exchanger (Titanium type)
Titanium surface (m²)
Acoustic pressure level dB(A) /1m
Water circuit connection (mm / inch )
Net dimensions (WxHxD)
HP 1000 GREEN On-Off
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 1100 GREEN Inverter Pro
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 1400 GREEN On-Off
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 1500 GREEN Inverter Pro
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 1700 GREEN On-Off
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 1700 Green Inverter ro
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 2100 GREEN Inverter Pro
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 2300 Inventor
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 2400 Premium
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
HP 2700 GREEN Inverter Pro
Titanium Gr 1 ASTM B265
50 (6/4´´)
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)
-5°C...+43°C, with accessories: -15°C...+60°C
Titanium Gr 1 ASTM B265
50 (6/4´´)

Manufacturer reserves the right to change the technical data without notice.

Read more

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