Table of Contents
Product & Technology
Q1. What is an instant (tankless) electric water heater?
A: An instant (tankless) electric water heater heats water on demand without a storage tank. When water flows through the unit, a high-efficiency heating element rapidly heats it to the desired temperature, providing continuous hot water while saving energy.
Q2. What are the advantages of an instant water heater vs. tank water heater?
A: Compared to traditional tank water heaters, our instant electric water heaters offer:
- Unlimited hot water supply
- No waiting time
- Up to 30% energy savings
- Compact designsaving space
- Longer service life
Q3. How do I choose the right power (kW) for my market?
A: Power selection depends on usage scenario and climate:
- 3–5kW: Kitchen / Hand washing
- 6–12kW: Single point / Shower use
- 18kW+: Multiple outlets / Whole house
It specifically depends on the usage scenario and the local climate.
Contact us today to recommend the right model based on your target market.
Q4. How to achieve precise and stable hot water supply?
Answer: Our intelligent control system automatically balances power output and water flow to deliver the precise temperature you have set—at maximum flow rate—in a stable and consistent manner, requiring no manual adjustment. For colder regions, we recommend utilizing our higher-wattage models, which incorporate our proprietary dual water-and-power control technology to effectively resolve issues where insufficient power prevents the system from meeting the desired temperature requirements.
Q5. How does inlet water temperature affect performance?
A: Lower inlet water temperature requires higher power to achieve the same output temperature. For frigid regions, residual moisture inside the machine may freeze and damage the water system. We recommend models with our panted intelligent anti-freeze technology.
Safety & Quality
Q6. Such a high-power instant water heater is it safe to use?
A: Yes, safety is not determined by power level, but by the design of the protection system.
Our products are designed with multiple safety protections, including:
- Leakage protection
- Overheat protection
- Dry heating protection
- Water-electricity isolation heating technology
- Leakage induction coil
- IPX4 waterproof rating
- Fault self-check function
Q7. What heating method or component material is used?
A: Common heating technologies include screw-type, quartz tube, stainless steel cup, copper-plastic cup, and cast aluminum element.
Cast aluminum is the only solution enabling water-electricity separation while reducing scale buildup.
We uses cast aluminum as standard, with a patented M-shaped design in high-end models for faster heating, higher efficiency, and longer lifespan.
Q8. What certifications do your products have?
A: Our products are designed in compliance with international standards such as CE, CB, and RoHS, ensuring safety, reliability, and global market compatibility.
With extensive export experience, we support customers in obtaining local certifications, testing, and required documentation, helping accelerate market entry and reduce compliance risks.
Q8. What certifications do your products have?
A: Our products are designed in compliance with international standards such as CE, CB, and RoHS, ensuring safety, reliability, and global market compatibility.
With extensive export experience, we support customers in obtaining local certifications, testing, and required documentation, helping accelerate market entry and reduce compliance risks.
Installation & Technical Requirements
Q9. What are the electrical requirements?
A: Requirements vary by model, typically voltage: 220–240V / 380V 3N
Dedicated power line required.
Proper grounding is essential.
We customize specifications according to your country. Based on the wire conditions, recommend appropriate power, models and circuit breaker specification.
Q10. What water pressure is required?
A: Common heating technologies include screw-type, quartz tube, stainless steel cup, copper-plastic cup, and cast aluminum element.
Cast aluminum is the only solution enabling water-electricity separation while reducing scale buildup.
We uses cast aluminum as standard, with a patented M-shaped design in high-end models for faster heating, higher efficiency, and longer lifespan.
Q8. What certifications do your products have?
A: Our products are designed in compliance with international standards such as CE, CB, and RoHS, ensuring safety, reliability, and global market compatibility.
With extensive export experience, we support customers in obtaining local certifications, testing, and required documentation, helping accelerate market entry and reduce compliance risks.
Q11. Is installation complicated?
A: Installation is simple:
- Install hardware
- Mount the unit
- Connect water inlet/outlet
- Connect circuit breaker
- Install shower head
Professional installation is recommended for safety and compliance.
We will provide installation guidance to our partners if needed.
Market Adaptation & Customization
Q12. Can you customize products for different markets?
A: Yes. Our strength lies in R&D and engineering, provide full OEM & ODM support, including:
- Voltage & power customization
- Logo & branding
- Packaging design
- Product appearance
- Product functions
Market competition is increasingly focused on price and homogenization. We welcome global partners to discuss customized products, collaborate on development, and enhance local influence. This is key to our long-term win-win cooperation.
Q13. Is your product suitable for my country and market?
A: Yes. While our products are widely used in different regions, we recognize that each market has unique requirements in terms of climate, water conditions, electrical stability, design preferences, and control features.
To ensure optimal performance and competitiveness, we recommend working with us to select or co-develop models tailored to your market. This approach helps our partners improve product positioning and maximize sales potential.
Contact us for a customized solution.
Ordering & Business Cooperation
Q14. Are you a manufacturer or trading company?
A: We are a subsidiary of PIANO Group (002853SZ) listed company, and also a professional manufacturer with over 21 years of experience in instant electric water heaters, offering stable quality, strong production capacity, and on-time delivery.
Q15. What is your MOQ (Minimum Order Quantity)?
A: Sample order: 1 pcs available
Bulk order: typically starts from 100 pcs
We reduce the trial-and-error costs for our partners by offering flexible, small-quantity trial orders. Our goal is customer success, not just a one-off sale.
Q16. Can I order samples?
A: Yes, sample orders are welcome to test quality and performance.
Q17. What is your lead time?
A: Samples: 2–7 days
Mass production: 2–4 weeks, specifically depends on order quantity and demand details.
Q18. How do you ship the goods?
A: We have stable, reliable freight partners and support flexible shipping methods:
- Express (DHL, UPS, FedEx)
- Air freight
- Sea freight
Q19. What warranty do you offer?
A: 1-year warranty for the whole unit, 3-year warranty for the heating element
Q20. How to place an order?
A: Send your requirements
Receive quotation and solution
Welcome sample test or visit factory
Confirm deposit, proforma invoice and all details
Production and shipment