FAQs sobre bombas de calor

Question 1

Can Kolant provide ODM & OEM?

Accepted Answer

A: OEM (Original Equipment Manufacturer) We manufacture products according to your provided drawings, specifications and design requirements. The product design belongs to you, and we produce under your brand. ODM (Original Design Manufacturer) We provide our existing mature Kolant product designs and technical solutions. You can select our models and make custom adjustments on appearance, parameters or packaging, then sell under your own brand. Kolant supports both OEM and ODM services for heat pumps to meet different customer needs. A: Our technical team has 30 experienced engineers, offering full one-stop services from product design to mass production

Question 2

Como realizar auditorias e certificações por entidades externas?

Accepted Answer

Q: How do Kolant heat pumps complete third-party audits and certifications? A: Kolant cooperates with internationally accredited independent bodies such as TUV, SGS, BV, customer-specified third-party audit bodies to conduct factory audits and product certification testing. Pre-application: Confirm target market requirements, prepare technical files, BOM, drawings, test samples and quality system documents. Factory audit: Third-party inspectors visit our production site to review quality control, production process, component traceability and testing capability. Product testing: Samples are tested in accredited labs against corresponding standards, e.g. EN14511, EN14825, UL60335

Question 3

Que refrigerantes utilizam as bombas de calor Kolant?

Accepted Answer

Q: What refrigerants are available for Kolant heat pumps? A: Kolant offers multiple refrigerant options to meet different regional regulations and application requirements: R290 (Propane) – Natural low-GWP refrigerant, GWP≈3. Main option for EU market, ideal for residential all-in-one heating & cooling systems and pool heat pumps, compliant with F-Gas regulation and achieving A+++ energy class. R32 – Low-GWP refrigerant widely used in EVI ultra-low temperature units, pool heat pumps and ice bath chillers. It delivers excellent performance at low ambient temperatures and is a popular selection for European exports. R410A – Traditional refrigerant adopted on older models and some dual-source heat pumps. It is gradually phased out for new EU projects due to F-Gas restrictions

Question 4

How many main product categories does Kolant have?

Accepted Answer

Kolant has 6 main categories of heat pump products, detailed as below: Heating & Cooling Heat Pump Ultra-low temperature EVI inverter air-to-water heat pumps for residential and commercial use. It delivers space heating, cooling and domestic hot water in one unit, reliably working at -35°C. Ideal for villas, private houses and small commercial projects. Hot Water Heat Pump Domestic and commercial heat pump water heaters for constant hot water supply. Widely applied in hotels, dormitories and apartments with high COP and low operating cost. Swimming Pool Heat Pump Professional pool heat pumps for residential and public swimming pools. It maintains constant pool water temperature. Indoor models come with dehumidification function to extend swimming seasons

Question 5

FAQ of Operation, Maintenance, Warranty & Cost Saving of Kolant

Accepted Answer

Q: Why does the outdoor unit frost and defrost in winter? Is steam normal during defrosting?A: Frost forms when extracting heat from cold humid air. Steam released during defrosting is normal, not equipment failure. Q: How much maintenance does an air source heat pump require each year?A: Annual maintenance includes cleaning filters and heat exchangers. Refrigerant service must be done by certified technicians. Do not add refrigerant by yourself. Q: Unit low heating output, what should I check first?A: Check filter clogging, water flow rate, air blockage on outdoor heat exchanger and antifreeze concentration. Contact local installer if these checks do not solve the problem

Question 6

FAQ of Installation, Power & Winter Protection

Accepted Answer

Q: What power supply / voltage do Kolant heat pumps support?A: Smaller units support 230V single phase. Larger commercial models use 400V three phase. We will confirm power requirement during quotation. Q: How much noise do your outdoor units produce? Any night silent mode?A: Noise level ranges from 52~62dB at 1m. Night silent mode reduces fan & compressor speed to meet residential noise limits at night. Q: Does the existing gas boiler / old heating system work with your heat pump?A: It can be retrofitted. We may need buffer tank, hydraulic separator or radiator replacement depending on original system condition. Q: Do I need a buffer tank or hot water cylinder for air-to-water heat pump?A: Buffer tank is recommended for small heating systems to avoid frequent compressor on/off

Question 7

FAQ of Heat Pump Selection & Sizing Guide of Kolant

Accepted Answer

Q: What is the lowest outdoor temperature your heat pumps can work stably?A: Our EVI low-temperature heat pumps can operate stably down to -35°C. Heating capacity will drop slightly at extreme low temperatures; optional electric backup heater is available. Q: How to correctly size an air-to-water heat pump for my house?A: Room area is only a reference. We need to consider building insulation, ceiling height, local minimum temperature and terminal types (underfloor heating / radiators / fan coils). Q: Can your heat pump do both heating and cooling?A: Yes. We provide 3 in 1 models, including heating, cooling, hot water together be provided at same time. It delivers heating in winter and chilled water for fan coil cooling in summer. Single heating models are also available

Question 8

FAQ about Basic Heat Pump Knowledge & Refrigerant

Accepted Answer

Q: What is SCOP and how is it different from COP?A: COP is the instantaneous efficiency under a single working condition. SCOP stands for Seasonal Coefficient of Performance, the annual average heating efficiency, which is the key index for EU ErP certification and heat pump selection. Q: What is the difference between air-source heat pump and ground-source heat pump?A: Air-source heat pumps extract heat from ambient air, lower upfront cost and easier installation. Ground-source heat pumps use stable underground heat, higher efficiency but require land for boreholes or ground loops. Q: Heat pump vs air conditioner: what are main differences?A: Air conditioners mainly focus on cooling

Question 9

FAQ of Kolant R290 air source heat pump

Accepted Answer

More details about R290 products, please press here->,   ultra high 40KW, please press here-> Q1: What is R290 refrigerant? Why select R290 for EU market? A: R290 is natural propane refrigerant with ultra-low GWP=3, no ozone depletion potential. It fully complies with EU F-Gas phase-down rules and future-proofs your European distribution business against HFC restrictions. Q2: Are KOLANT R290 heat pumps compliant with EU F-Gas? A: Yes. Our R290 series meets EN14511, EN14825, EN378 safety standards and ERP A+++ energy label. CE, RoHS and CB certificates are available. Marking, manuals and refrigerant charge calculation follow EU A3 flammable refrigerant requirements. Q3: Can KOLANT R290 heat pumps be sold to USA & Canada?

Question 10

FAQ of Kolant Ice Bath Chiller

Accepted Answer

What is the lowest water temperature the ice bath chiller can reach? The chiller can cool water down to 3°C, meeting cold plunge recovery demands for athletes and wellness users. How long does it take to cool the water to target temperature? For a standard 200L tub, it usually takes 30–60 minutes to drop water from 25°C to 10°C. Larger water volume will require longer cooling time. Is this chiller compatible with my existing cold plunge tub? Yes. It works with most common inflatable, acrylic and wooden ice bath tubs. We only need to confirm your tub water volume for matching capacity. Does the ice bath chiller run quietly at home? Yes. It adopts low-noise fan design, running noise is around 45dB, suitable for home, gym and studio use without disturbing people nearby

Question 11

FAQ of Kolant Heat Pump Industrial / Commercial Dehydrator

Accepted Answer

How much can I save compared with coal, firewood and electric drying? You can cut overall operating costs by 40%–60%. Unlike traditional heating methods that consume fuel or electricity directly, heat pumps transfer heat from the air with far less energy waste. Can the machine work in extremely cold winter weather? Yes. Our EVI ultra-low temperature model operates stably even at -40°C. It is perfectly suited for cold northern regions and high-altitude areas, allowing year-round production without winter shutdowns. Can one dryer process different types of materials? Yes. It supports switchable open-loop and closed-loop modes, with flexible combinations of heating, dehumidification, and dual-function operation. It can dry roses, chili, herbs, cured meat, seafood and more

Question 12

What COP value is good for a domestic hot‑water heat pump?

Accepted Answer

COP (Coefficient of Performance) indicates how efficiently a heat‑pump water‑heater converts electricity into heat output. A higher COP means lower energy consumption for hot‑water production. Under standard test conditions (air temperature 20 °C), a decent domestic hot‑water heat pump should reach a COP of at least 3.0. Premium‑grade models can achieve COP 3.5‑4.2. It is worth noting that COP drops as ambient temperature falls. At low temperatures around 7 °C, a reliable unit should still maintain COP above 2.6. COP figures vary according to test standards, so always check which certification standard the data follows. For Kolant domestic hot‑water heat pumps, optimized compressor systems deliver stable high‑COP performance across seasonal temperature changes

Question 13

What type of the Hot Water Heat Pumps?

Accepted Answer

Domestic Split‑type: Outdoor unit plus hot‑water storage tank, for domestic hot‑water supply;All‑in‑one type: Fully integrated complete unit; Commercial Heat Pump Water Heater: Large‑capacity units for centralized hot‑water supply in hotels, dormitories and construction sites; Kolant can provide the above 3 type of heat pumps. More details please press the graph Electric water heater: Generates heat via electric heating tubes. 1 kWh of input power produces at most 1 kWh of heat, resulting in high power consumption.Gas water heater: Burns natural gas and requires flue gas exhaust.Solar water heater: Relies on solar energy; auxiliary electric heating is needed on cloudy days.Heat pump water heater: Extracts heat from ambient air and works on both cloudy and rainy days.

Question 14

What is the Working Principle of the hot water Heat Pump ?

Accepted Answer

The evaporator absorbs heat energy from the air to warm the refrigerant.The compressor compresses the refrigerant, causing its temperature to rise sharply.The high‑temperature refrigerant transfers heat to water through the heat exchanger to heat the water.After cooling down, the refrigerant goes through throttling and pressure reduction, then returns to the evaporator for continuous circulation. Only electric power for the compressor is consumed. Electricity is mainly used to transfer heat instead of generating heat directly. ✅ Energy‑saving: The COP generally ranges from 3 to 4. Consuming 1 unit of electricity can produce 3‑4 units of heat, saving around 70% electricity cost compared with electric water heaters. ✅ Safe: Water‑electricity separation design

Question 15

What is a Domestic Hot‑Water Heat Pump

Accepted Answer

A domestic hot‑water heat pump (air‑source heat pump water heater) heats water by transferring heat from ambient air, instead of generating heat directly with electricity. To put it simply, it works like an air‑conditioner running in reverse. An air‑conditioner expels indoor heat outdoors, while a domestic hot‑water heat pump captures heat from outdoor air and transfers it into the water tank to heat the water. Domestic hot water heat pumps from Kolant intend to provide the most environmental solution for the generation of domestic hot water. By replacing the existed central hot water devices such as electric boilers, oil boilers etc, more than 70% of the energy required for domestic hot water can be taken form renewable source instead of electricity heating or fossil fuel burning

Question 16

Can I install air-to-water heat pump by myself?

Accepted Answer

Warranty Risk: For most domestic brands, installation by non‑professionals will directly void the full‑unit warranty. A small number of overseas DIY‑oriented models permit self‑installation, yet strict compliance with the instruction manual is mandatory. Electrical Safety: High‑power heat pumps require a dedicated circuit breaker and proper earthing. If you are unfamiliar with high‑voltage electricity, always hire a licensed electrician. Refrigerant Safety: R32 is mildly flammable and R290 is flammable. Untrained personnel are strictly prohibited from opening the refrigerant circuit. (EMSD) Wall drill holes shall slope downwards to ensure condensate drains outdoors and prevent water leakage and indoor flooding.

Question 17

What is air to water heat pump?

Accepted Answer

Outdoor unit: similar to an air conditioner outdoor unit, absorbs heat from the air Indoor side: connected to underfloor heating, radiators, fan coil units or hot water tanks Operation: electricity drives the compressor → extracts heat from the air → heats water → water delivers heat to rooms Produces hot water, suitable for underfloor heating, radiators and domestic hot water High comfort: stable water temperature, no dry air, gentler than fan coil air conditioners Energy efficient: 1 kWh of electricity generates 3–5 times more heat energy Can be used for both cooling and heating: heating in winter, chilled water cooling in summer Ultra-low temperature models (EVI) operate normally for heating at -25°C to -35°C Air to Air: air → air, direct cold/hot air supply, i.e

Question 18

O que é uma bomba de calor com fonte de ar?

Accepted Answer

Residential: Underfloor heating, radiators, central air conditioning, central hot water Commercial: Hotel hot water, shopping mall heating & cooling, swimming pool constant temperature Industrial & Agricultural: Drying, aquaculture temperature control, industrial thermal insulation

Question 19

Major Global Heat Pump News & Updates (as of July 2026)

Accepted Answer

Europe: Market Boom & Policy Acceleration 1 Heat Pumps Save €9.7 Billion Annually by Replacing Middle East Gas (June 2026) According to EHPA data, heat pump heat supply across Europe in 2025 was equivalent to the cargo of over 200 LNG carriers — twice the EU’s LNG imports from the Middle East — saving €9.7 billion in import costs. Nearly 3 million units were sold across 21 European countries in 2025, with the total installed base reaching 29.3 million units. 2 EU Heat Pump Acceleration Platform Advances Deployment (January 2026) The 4th Heat Pump Acceleration Platform meeting focused on cost reduction, supply chain resilience and sustainability, establishing R&D roadmaps to advance the EU’s target of 30 million heat pumps by 2030

Question 20

Diferença entre secadores com bomba de calor e secadores convencionais

Accepted Answer

Energy Efficiency Heat pump dryers use reverse Carnot cycle to transfer heat instead of generating heat directly. They consume only 1/3 to 1/2 the electricity of conventional electric dryers, with much lower running costs. Drying Temperature Conventional dryers use high-temperature heating, which can easily damage materials. Heat pump dryers adopt low-temperature & controllable drying, better preserving color, shape, nutrition and quality. Drying Method Conventional dryers mainly rely on high-temperature air to evaporate moisture. Heat pump dryers combine heating + dehumidification + closed air circulation, with less air exchange and higher heat utilization. Environmental Impact Fuel-fired dryers produce exhaust gas and pollution

Question 21

Qual é a temperatura mínima de funcionamento das bombas de calor para piscinas?

Accepted Answer

Standard residential models: Typically 5°C (41°F). Below this, heating capacity drops sharply, and defrost cycles become frequent. Mid-range inverter models: Operate down to -5°C to -7°C (23°F to 19°F)阿里巴巴中…, with enhanced defrost and low-temperature compressors. High-performance cold-climate models (with EVI/Inverter): Can run reliably at -10°C to -20°C (14°F to -4°F), and some commercial ultra-low temp units reach -30°C (-22°F).

Question 22

Are pool heat pumps suitable for saltwater pools?

Accepted Answer

All Kolant pool heat pumps are equipped with titanium heat exchangers, enabling them to resist corrosion from any type of water and achieve a service life of 10 to 20 years. Titanium Heat Exchanger for Pool Heat PumpsThe titanium heat exchanger (commonly called “titanium coil” or “titanium evaporator”) is the core heat transfer component in pool heat pumps, designed specifically for corrosive water environments.Key Functions: Efficient Heat Transfer: Pure titanium tubes carry refrigerant while pool water flows through the shell, transferring thermal energy efficiently to heat the pool. Superior Corrosion Resistance: Titanium withstands chlorine, salt, bromine, and harsh chemicals found in pool and seawater environments—far outlasting copper or steel alternatives

Question 23

Advantages of Water-based Air Conditioning vs. Refrigerant-based Split Air Conditioning

Accepted Answer

Gentle, non-stinging air supplyRefrigerant units operate at an evaporator temperature of 7–12°C, creating a large temperature difference between supply air and room air. Their cold airflow feels harsh and can cause joint discomfort under direct blow.Water systems circulate chilled water at 12–15°C, delivering mild cold air that diffuses evenly like natural breeze—ideal for the elderly, children and pregnant women for long stays.Balanced indoor humidity without drynessLow-temperature coils of refrigerant units remove excessive moisture, dropping indoor humidity to only 30%–40%, leading to dry throat, chapped skin and itchy eyes.Water systems avoid over-dehumidification and maintain a comfortable humidity range of 45%–55%, eliminating the need for extra humidifiers.Uniform whole-house

Question 24

How to size a heat pump for my swimming pool?

Accepted Answer

Note: Recommendations assume average climate, 20°F (11°C) temperature rise, and 8-hour daily operation. Adjust upward for colder climates, windy areas, or year-round use. Kolant offers a full range of pool heat pumps from 7 kW to 45 kW (24,000–154,000 BTU), covering residential plunge pools to commercial aquatic facilities. All models feature: Premium titanium heat exchangers (saltwater compatible) High COP up to 6.0 Quiet operation Wide operating temperature range (−7°C to 43°C ambient) For personalized sizing, send us your pool dimensions, location, and usage requirements, and our technical team will recommend the optimal Kolant model for your project.

Question 25

How Does Swimming Pool Heat Pump Work?

Accepted Answer

Efficient Heating Technology for Year-Round Pool Enjoyment Kolant swimming pool heat pumps operate on the principle of heat transfer rather than heat generation, making them far more energy-efficient than conventional electric or gas heaters.

Question 26

Qual é a diferença entre uma bomba de calor com inversor e uma bomba de calor com inversor CC?

Accepted Answer

Inverter Heat Pump (mostly AC inverter): Adopts AC motor with variable frequency speed regulation, enabling adjustable power output but with average efficiency and precision. DC Inverter Heat Pump: Equipped with permanent magnet DC brushless motor and full DC drive system, featuring wider speed regulation range, higher efficiency and more accurate temperature control, making it the mainstream high-end solution. Drive System & Motor Inverter Heat Pump: AC asynchronous motor, rotor driven by induced current with certain energy loss. DC Inverter Heat Pump: Permanent magnet DC brushless motor, no rotor winding loss, more direct and efficient drive. Power Adjustment Inverter Heat Pump: Narrow speed regulation range, average stability under low load

Question 27

O que é uma bomba de calor de frequência variável?

Accepted Answer

In simple terms: Variable Frequency Heat Pump = Conventional Heat Pump + Variable Frequency Compressor. It automatically adjusts its power output like an air conditioner, instead of constantly switching between full load and shut-off. Conventional Heat Pump: Only operates in ON/OFF modes, with frequent starts and stops, high power consumption, and large temperature fluctuations. Variable Frequency Heat Pump: Compressor speed is adjustable—runs at low speed under light load and high speed under heavy load.

Question 28

Quais são as aplicações das bombas de calor?

Accepted Answer

Heat pumps have a wide range of applications. Their core principle is to transfer heat using a small amount of electricity, enabling heating, cooling, and hot water supply. They cover nearly all industries requiring temperature control. Major Industries for Heat Pump Applications Household heating, central air conditioning, domestic hot water, and underfloor heating systems, which are currently the most common uses. Swimming Pool Industry,  Constant temperature heating and dehumidification for pool water, a standard energy-saving solution for swimming pools. Centralized hot water supply and air conditioning for heating and cooling, delivering remarkable energy savings and lower operating costs

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