A Choosing NULITE means partnering with a comprehensive heat pump intelligent manufacturing base. From mature, high-efficiency standard heating to cutting-edge PV direct-drive and R290 explosion-proof technologies; from our 200,000 m² factory foundation to our 10 advanced laboratories—we don't just sell machines. We deliver market-leading, integrated energy solutions you can trust.

A We offer industry-leading warranties across our entire product line. Generally, we provide 2-year warranties for the whole unit and extended warranties for core components like compressors (specific terms depend on the product model and agency agreement). If a non-human-induced failure occurs during the warranty period, we will ship replacement parts free of charge.

A We view our distributors as strategic partners. In addition to offering highly competitive wholesale pricing and excellent profit margins, we provide: marketing material support, local project protection, priority access to customized R&D, and generous spare parts allowances.

A We offer comprehensive support. Every unit comes with detailed, multi-language installation and maintenance manuals. For our distributors and engineering partners, we provide online video technical training, 24/7 remote troubleshooting, and system design assistance for complex projects.

A Maintenance is minimal and very simple. We recommend an annual checkup to clean the outdoor evaporator fins for proper airflow and to inspect the water system's pressure and filters. Furthermore, our units are equipped with smart self-diagnostic systems that instantly display error codes on the screen if an anomaly occurs.

A Both our standard air source heat pumps and PV direct-drive systems are fully compatible with existing radiant underfloor heating pipes, Fan Coil Units (FCUs), and most traditional radiators that match the water temperature requirements.

A Correct sizing is vital for maximum efficiency. It depends on your property size, insulation quality (wall thickness, window types), local minimum winter temperatures, and total heat load demands. If you are unsure, simply send us your floor plans or project details, and NULITE’s engineers will provide a precise, free system load calculation.

A Actually, it extends it. By eliminating the AC/DC conversion process, the thermal load on internal electronic components is significantly reduced. Additionally, pure DC inverter technology allows for smoother compressor startups without surge currents, effectively prolonging the life of core components.

A Because it directly offsets your home's largest energy consumer (heating and hot water) while eliminating the cost of solar batteries and standalone inverters, the ROI is exceptionally fast. In regions with high electricity rates, users typically recover their investment in 2 to 4 years, while enjoying a system lifespan of over 15 years.

A Yes. Our system is designed with high compatibility and wide-voltage input support. As long as the voltage and current output of your existing solar array fall within our equipment's DC input range, upgrading is a breeze.

A Absolutely. Our system features Smart Grid/PV Seamless Switching Technology. When the system detects insufficient solar power (such as at night or during heavy rain), it automatically and seamlessly draws supplementary power from the city AC grid, ensuring 24/7 uninterrupted heating and hot water.

A No! This is one of the system's greatest advantages. While traditional solar systems use expensive chemical batteries to store electricity, our system uses a water tank to store heat (Thermal Battery). Free solar energy heats the water to high temperatures during the day, which is then released for nighttime heating or showering, vastly lowering your initial investment.

A Installation is incredibly simple. NULITE's PV direct-drive heat pumps feature a "Plug-and-Play" design. Installers simply plug the solar panel cables into the dedicated DC interface on the heat pump. This eliminates the need to install expensive grid-tied inverters and complex distribution boxes, saving significant labor and material costs.

A The energy savings are disruptive. During sunny days, the heat pump can run on nearly 100% solar power, drawing zero electricity from the grid. Over an entire year, compared to traditional grid-powered systems, our PV direct-drive heat pumps can save 70% to 90% on electricity bills, bringing you closer to a "Zero Carbon, Zero Bill" lifestyle.

A A PV Direct-Drive Heat Pump is a revolutionary system that allows the direct current (DC) generated by Solar Photovoltaic (PV) panels to directly drive the heat pump's compressor and motor. This bypasses the need for complex solar inverters to convert DC to AC, drastically reducing energy loss during conversion.

A Not at all. Our heat pumps incorporate multiple noise-reduction technologies, including brushless DC fans, full DC inverter compressors, and professional soundproof acoustic cabins. The operational noise is usually below 50dB—similar to the hum of a household refrigerator—fully complying with strict residential noise control standards.

A R290 (Propane) and R744 (Carbon Dioxide) are future-proof, natural refrigerants. They boast an ultra-low Global Warming Potential (GWP), meeting the strictest European environmental regulations. They also achieve much higher water outlet temperatures, making CO₂ heat pumps exceptionally well-suited for commercial applications requiring very hot water.

A Pool heat pumps are equipped with specialized titanium heat exchangers that offer superior resistance to corrosion from chlorine and pool chemicals. Furthermore, their operating logic is uniquely optimized for heating large volumes of water with lower temperature differentials.

A Yes, without a doubt. Our ultra-low temperature heat pumps utilize EVI (Enhanced Vapor Injection) DC inverter technology, designed specifically for harsh climates. They maintain stable heating performance and high COP (Coefficient of Performance) even at extreme temperatures as low as -35°C.

A Unlike traditional boilers that rely on fossil fuels, an ASHP transfers free thermal energy from the ambient air. A properly sized and installed ASHP system can significantly reduce your carbon footprint while cutting heating costs by up to 50%. Plus, they often qualify for government green energy rebates worldwide.

A Yes! NULITE takes pride in offering a comprehensive heat pump product matrix. Beyond standard air-to-water heat pumps (ASHP), our full range includes:
-35°C EVI DC Inverter Heat Pumps (9KW–132KW)
PV Direct-Drive Heat Pump Systems
Eco-friendly Refrigerant Heat Pumps (R744 CO₂, R290, R32)
Swimming Pool & SPA Heat Pumps (5KW–150KW)
Domestic Hot Water Heat Pumps (80L–300L all-in-one/split tanks)
Ground-source, water-source, and commercial heat pump systems.

A Absolutely. We highly encourage new customers to order a sample unit to evaluate its performance and adaptability to local climates. We have absolute confidence in our product quality.

A To meet varying cost and time requirements, we offer multiple freight options:
Sea Freight: 30–50 days (Most cost-effective for bulk orders)
Rail Freight: 35–45 days (Ideal for Europe and regions along the railway network)
Air Freight: 5–10 days (Best for urgent projects)
Express: 5–7 days (Perfect for sample delivery)
We will recommend the most optimal shipping method based on your specific order.

A We pride ourselves on efficiency. For in-stock standard items, delivery takes just 1 to 5 working days. For out-of-stock, bulk, or customized orders, the lead time is typically 15 to 25 days, depending on the exact quantity and specifications.

A The process is straightforward. You can send us your inquiry via email or our website's contact form. Our senior sales engineers will confirm the technical specifications and issue a Proforma Invoice (PI). Once you provide your company name, detailed shipping address, contact information, and preferred shipping method, we will process your order immediately.

A Our products strictly comply with global standards and are certified with CE, CB, UKCA, ErP, SGS, and RoHS. Additionally, our manufacturing operations are fully certified under ISO 9001 (Quality Management) and ISO 14001 (Environmental Management) systems.

A Yes, we have exceptional OEM and ODM capabilities. We provide "one-stop" solutions for renowned brands, distributors, and engineering companies across more than 100 countries, covering everything from exterior design and function customization to system development and private labeling.

A Reliability begins with rigorous testing. NULITE has invested in 10 industry-leading laboratories, including a -45°C ultra-low temperature environmental lab, transportation vibration testing equipment, and salt spray corrosion facilities. Furthermore, we feature advanced R290 explosion-proof production lines, dedicated evaporator workshops, sheet metal stamping, and injection molding workshops to guarantee component quality.

A Backed by a robust supply chain and intelligent manufacturing capabilities, NULITE employs over 800 staff and operates more than 12 specialized production lines. Our annual production capacity reaches up to 1 million units, allowing us to ensure prompt delivery for both large-scale standard orders and customized projects.

A We are a comprehensive R&D and manufacturing enterprise. Established in 2003 as a China-Singapore joint venture, we operate two modern manufacturing bases spanning over 200,000 m² in Guangzhou and Foshan (just 20 minutes from Baiyun International Airport). We are a trusted source factory for global heat pump solutions.