GIGGAS Water Heater Review

Introduction: Hong Kong’s weather is humid. Whether it is the rainy season in spring and summer or the damp, chilly weather in autumn and winter, a stable and reliable water heater is an essential appliance for every household. Among the many brands available, the local Hong Kong brand “GIGGAS 上將” has long attracted attention thanks to its value for money and designs tailored to the local market. But is a GIGGAS 上將 water heater actually good to use? Are its constant-temperature performance, durability and safety trustworthy? In this article, we act as your product analysis expert, taking an in-depth look across major Hong Kong discussion forums, including LIHKG, Baby Kingdom, Threads, and even referencing relevant product trends in the Taiwan, European and US markets, to compile the most comprehensive 2025 purchasing analysis of GIGGAS 上將 water heaters and help you make the wisest decision.

Further reading: “[2025 Latest Edition] 3 Highly Rated Water Heater Recommendations | With Brand Comparisons”

Are GIGGAS 上將 water heaters good to use? Overall reviews from Hong Kong netizens

To understand a product’s real-world performance, the most direct way is to listen to users’ voices. We have specially compiled user reviews from several major online communities in Hong Kong, allowing you to understand the actual user experience of GIGGAS 上將 water heaters from different perspectives.

Reviews from the LIHKG discussion forum

LIHKG users generally have relatively high expectations for product performance, value for money and installation details, and their comments tend to be direct.

• Constant-temperature performance: Many “brothers” said that GIGGAS constant-temperature gas water heaters perform well. Even when water pressure is unstable on higher floors, they can still keep the water temperature steady without suddenly turning cold or hot. “I used to use a storage type heater, and halfway through the shower I had to be very careful. After switching to the GIGGAS 上將 constant-temperature heater, I can finally enjoy a comfortable shower.”
• Heating speed: As a gas water heater, instant heating is a basic advantage. One user shared: “When I get home and turn it on, there’s hot water right away. No need to wait. For someone like me who often gets home late after OT, it’s a blessing.”
• Installation issues: Some discussions focused on the installation process. Users reminded that gas water heaters must be installed by technicians from a registered gas contractor, and adequate ventilation must be ensured. “The installer is very important. You must find someone reputable and not just go for cheap. If the technician’s workmanship is good and the installation is proper, you feel more at ease using it.”
• Value for money: The general view is that GIGGAS is more affordable than Japanese or European brands, while its functions are not inferior, making it an ideal choice for those seeking value for money. “A Japanese brand of the same level may cost over a thousand dollars more, but GIGGAS 上將 has all the basic constant-temperature and safety functions. It is more than enough.”

Reviews from Baby Kingdom

Baby Kingdom users are mostly household decision-makers. They are more concerned about product safety, ease of operation, and whether it is suitable for families with children or elderly members.

• Safety: This is the area parents care about most. Several “Hong Kong mums” said they chose GIGGAS because it comes with multiple safety devices, such as flame failure safety devices and overheat protection. “When bathing children, the thing I fear most is sudden water temperature changes. GIGGAS keeps the temperature quite accurately; once it is set to 40 degrees, it doesn’t really fluctuate, so I feel very reassured using it.”
• Ease of operation: Modern models are often equipped with digital displays, making the temperature clear at a glance and operation intuitive. “Even elderly people know how to use it. Press a few buttons and it’s done. They can adjust it without reading the manual.”
• Durability: Some long-term users shared that they have used a GIGGAS water heater for more than five years and it is still operating normally, believing its durability is trustworthy. “The one at my home has been used for six years. Apart from regular checks, it basically has had no problems. It is quite durable.”
• Capacity options: For family users, the water output of the water heater is an important consideration. One user suggested: “If your home has two bathrooms, or if you may use hot water in the kitchen and bathroom at the same time, it is best to choose a model of 12 litres or above, so you won’t have to worry about competing for hot water.”

Reviews from Threads and other social media

On newer social platforms such as Threads, users’ sharing tends to be more lifestyle-oriented and immediate.

• Appearance design: Some younger users consider GIGGAS designs to be relatively traditional and plain. Although they may not fully match home styles that pursue a fashionable look, they are simple and easy on the eye.
• After-sales service: Reviews of after-sales service are relatively mixed. Some users praised the repair team for responding quickly and resolving problems promptly, while others reported longer waiting times for repair appointments. This reflects that after-sales service experiences may vary by case.

Advantages of GIGGAS 上將 water heaters

Based on reviews from different sources, we have summarised several key advantages of GIGGAS 上將 water heaters:

• Mature and stable constant-temperature technology: Most users give positive feedback on its constant-temperature performance. It can effectively avoid water temperature fluctuations caused by changes in water pressure, providing a comfortable showering experience, which is especially important for families with infants and young children.
• Fast heating with no need to wait: Using gas as the energy source, it provides hot water instantly when turned on, with no need for preheating like a storage electric water heater, greatly improving everyday convenience.
• Extremely high value for money: Compared with imported brands, GIGGAS offers similar functions, such as digital constant temperature and multiple safety protections, at a more competitive price, matching the spending budgets of Hong Kong households.
• Comprehensive safety functions: Products are generally equipped with flame failure safety devices, overheat protection, pressure sensing and more, complying with the safety specifications of Hong Kong’s Electrical and Mechanical Services Department, giving users greater peace of mind.
• A Hong Kong brand that better understands local needs: As a local brand, GIGGAS product designs better fit Hong Kong’s living environment. For example, the body size is relatively compact, making it suitable for installation in flats with limited space.

Disadvantages of GIGGAS 上將 water heaters

Of course, no product is perfect. According to user feedback, GIGGAS 上將 water heaters also have some areas that could be improved:

• Operating noise: Some users reported that certain models produce relatively noticeable sound during ignition or high-power operation. Although it is within an acceptable range, users who seek an extremely quiet environment may need to take this into consideration.
• Installation limitations: All gas water heaters have strict installation requirements. They must be installed in well-ventilated locations and handled by licensed technicians. For some older buildings or flats with interior design restrictions, careful assessment is needed before installation.
• Relatively conservative appearance design: The product design language leans towards practicality, with more traditional lines and appearance. Consumers who pursue interior design aesthetics may find fewer choices.

Reference from overseas market reviews

Although GIGGAS is mainly focused on the Hong Kong market, we can use comparisons between its product characteristics and overseas market trends as a side reference.

• Taiwan market reviews (analogy reference): In Taiwan, a market similar to Hong Kong, users also place importance on the constant-temperature performance and safety of water heaters. Taiwanese users on forums such as PTT and Mobile01 give high ratings to local brands with strong value for money, believing their functions have already caught up with Japanese brands, although there is still room for improvement in brand image and detail handling. This is quite similar to Hong Kong users’ perception of GIGGAS, reflecting that reliable local brands are highly attractive choices in mature markets.
• European and US market trends (feature comparison): In European and US countries, especially in Europe, energy efficiency requirements for electrical appliances are very high. Compared with traditional large storage electric water heaters, GIGGAS instant gas water heaters are more efficient in energy use because they heat only when needed, avoiding the energy waste caused by continuous heat retention. Their compact size also matches the trend toward more space-efficient urban housing in Europe. This shows that GIGGAS’s core technological direction is in line with international trends in energy saving and environmental protection.

Recommended GIGGAS 上將 water heater models in 2025

Based on performance, user reputation and market trends, we recommend the following two GIGGAS 上將 water heater models worth considering in 2025. To learn more about GIGGAS 上將 water heater models and latest offers, you can click the link to browse.

1. GIGGAS 上將 GIW-13N3 TG (Town Gas)

This is a high-flow constant-temperature water heater designed for medium to large households, especially suitable for flats with multiple water outlets.

2. GIGGAS 上將 GIW-12UPN3/LPG (Town Gas/LPG)

This model is a popular choice in the market, balancing performance, size and price, and is suitable for the vast majority of Hong Kong households.

Summary

Overall, GIGGAS 上將 water heaters remain a very reliable and competitive choice in the 2025 market. With stable constant-temperature performance, rapid heating capability, comprehensive safety protection and extremely high value for money, they have earned the trust of many Hong Kong users. Although there may be room for improvement in details such as operating noise and appearance design, their core functions can fully meet the daily needs of Hong Kong households. If you are looking for a gas water heater that is reliable in performance, affordable in price, and understands the needs of Hong Kong’s local living environment, GIGGAS 上將 is definitely a brand worth prioritising.

Where can you buy GIGGAS 上將 water heaters?

You can buy them from the official GIGGAS 上將 website or authorised distributors such as BBE. BBE has won the “Online Electrical Appliance Sales Reputation Award” for three consecutive years. This award is organised by “Hong Kong Discuss Forum” and is nominated by netizens across Hong Kong and selected through a one-person-one-vote system. This honour shows that, in addition to offering the best prices, BBE has also won customers’ appreciation through professional sales and after-sales services. BBE guarantees that all electrical appliances sold are brand-new, genuine Hong Kong-authorised products, and provides original manufacturer warranty and seven-day replacement service for defective items. Prices are fair and clearly listed, with no gimmicks. These commitments and services give customers greater peace of mind when choosing electrical appliances and build a long-term relationship of mutual trust with customers.