A chaise bathtub is a bathtub whose interior is shaped with a sloping, chair-like backrest at one end, so the bather soaks in a semi-reclined position instead of sitting upright. When that lounging surface is combined with a hydromassage circuit, the result is a chaise-style whirlpool bathtub. This guide defines the layout, separates it from walk-in and built-in formats, and identifies which documented Guangshun Bathtub models give a buyer the closest technical starting point.

A modern bathtub shell from the Guangshun Bathtub range. The interior contour, not the outer styling, determines whether a tub reads as a chaise bathtub.

What a Chaise Bathtub Actually Is

Interior geometry defines a chaise bathtub, not the outer shell. The chaise end is a continuous slope that rises from the base of the tub to support the back and shoulders, while the flat section stays long enough for the legs to rest. The bather reclines; the tub does the supporting. That single design decision separates the chaise bathtub from a conventional upright soaking tub, where the back is straight and the water line sits differently against the body.

In a whirlpool bathtub, the lounging surface sits above a hydromassage circuit made of a water pump, an air pump and a set of jets. The reclined position changes how those jets are experienced, because the body is spread along the length of the tub rather than compressed into a seated corner. Buyers who compare whirlpool models on price alone often miss this point: the jet hardware can be identical between two tubs, yet the soaking experience differs completely once the interior is shaped as a chaise.

Three layouts that are often confused

• Chaise bathtub: defined by a reclining interior slope. Installation format and jet configuration are separate decisions.
• Walk-in bathtub: defined by a door and a low entry threshold. A walk-in tub may or may not have a reclined interior.
• Built-in bathtub: defined by how the rim meets a tiled or panelled surround. A built-in bathtub may be upright or reclined inside.

Because these three labels describe different things, a single product can legitimately carry more than one of them. A built-in whirlpool bathtub with a reclined interior is a chaise bathtub and a built-in bathtub at the same time. This overlap is the main source of confusion in early-stage product research, and it is the reason specification work should begin with the interior contour rather than with the product name.

Industry Background: Why the Lounging Layout Keeps Coming Up

The global bathtub market reached USD 8.66 billion in 2025, according to market research published by The Business Research Company in 2026. That figure covers bathtubs as a whole, including whirlpool and massage variants, and it explains why the category attracts so many configurations: manufacturers compete less on the basic tub shell and more on what happens inside it and around it.

Regulation has developed in parallel, and it is the part buyers most often underestimate. In Europe, EN 17125:2018 sets safety requirements and test methods for domestic spas, whirlpool spas and hot tubs, while EN 12764:2015+A1:2018 specifies characteristics for indoor domestic whirlpool baths supplied as complete independent units designed to be drained after each use. Electrical safety for whirlpool baths and spas is addressed separately by EN IEC 60335-2-60:2023/A11:2023, which covers markings, instructions, electrical components, wiring and residual-current protection. The same standard record states a voltage scope of up to 250 V for single-phase appliances and 480 V for other appliances.

In the United States, plumbing certification guidance from Home Innovation Research Labs identifies CSA B45.5/IAPMO Z124 for plastic plumbing fixtures and ASME A112.19.7/CSA B45.10 for hydromassage bathtub systems. The same guidance states that pressure-sealed doors within a bathtub or whirlpool bathtub enclosure should comply with ASME A112.19.15, and that fixtures used in a plumbing system should be listed by a listing agency accredited as a conformity-assessment body against approved applicable standards.

How Guangshun Bathtub Sits Inside the Category

Foshan Gaoming Guangshun Sanitary Ware Co., Ltd., trading as Guangshun Bathtub, is a sanitary ware manufacturer based in Foshan City, Guangdong Province, China, established in 2004. The company operates a 15,000 m² factory with approximately 80 staff, including a research and development team of 8 engineers, and reports an annual production output of 25,000 units. Roughly 70% of production is exported, with the EU, USA, Middle East, Southeast Asia and Africa listed as major markets.

The product portfolio covers massage bathtubs, whirlpool tubs, steam rooms, dry sauna rooms, large soaking tubs and outdoor swimming pools, manufactured for hotels, guesthouses and residential homes. Documented hotel projects include Wyndham Kunming, Anhui Fumao Hotel, Beijing Construction Engineering Hotel and Maldives Hot Spring Hotel. For a buyer working on a chaise-style specification, this matters for one practical reason: the reclined interior is a shell decision, and the shell sits in the same production environment as the whirlpool hardware, the steam room and the sauna room lines.

Production at the Foshan facility, where massage bathtubs, whirlpool tubs and steam rooms are manufactured.

Documented Models That Support a Reclined Soaking Position

The most direct evidence inside the current catalogue sits in the massage bathtub and walk-in ranges. Model H-1512 is an indoor acrylic massage bathtub with a PU pillow, a spacious interior, colourful ambient lights and multi-directional surfing nozzles as the control method. It runs on a 1 × 1.25 kW water pump and a 400 W air pump at a rated voltage of 110-120V/220-240V, and it is built with thickened material for heat retention and a strong load-bearing capacity.

Model H-1511 is a two-person massage bathtub in the same indoor category, also acrylic, with a 1.25 kW water pump, a 400 W air pump, a PU pillow and omnidirectional surfing nozzles for multi-directional massage. Model H-1515 is an indoor massage bathtub described as a spa pool and whirlpool bathtub, manufactured in China, with a spacious interior, a 1.25 kW water pump, a 400 W air pump and a stated suitability for built-in installation in bathroom projects.

On the accessible side, model H-5622 is a China-manufactured walk-in bathtub for bathroom renovation and accessibility projects. It is an indoor acrylic tub with thickened material for heat retention, a 1.25 kW water pump, a 400 W air pump, multi-directional massage jets, colourful ambient lights, a spacious interior and a PU pillow, available for wholesale supply. Model H-5627 is an acrylic indoor walk-in bathtub with the same pump configuration, dual voltage input of 110-120V and 220-240V, and hydrotherapy functions driven by its water and air pumps.

Model H-1512: indoor acrylic massage bathtub with a PU pillow, spacious interior, ambient lighting and multi-directional surfing nozzles.

Step-by-Step: Specifying a Chaise-Style Whirlpool Bathtub

1. Fix the soaking posture first. Describe the interior in section: where the backrest begins, how far it slopes, and how much flat length remains for the legs. This is the only step that genuinely belongs to the chaise decision, and it should be agreed before any model number is quoted.
2. Choose the installation format. Built-in, freestanding or walk-in. H-1515 is documented as suitable for built-in installation; H-5622 and H-5627 are walk-in formats with hydrotherapy pumps.
3. Match the hydromassage hardware. The documented indoor whirlpool models use a 1 × 1.25 kW water pump and a 400 W air pump. Confirm that the jet layout follows the reclined surface rather than a standard upright layout.
4. Confirm voltage and electrical supply. All documented indoor models are rated 110-120V/220-240V. The installation site must match, and European electrical-safety requirements around markings, wiring and residual-current protection apply in that market.
5. Review material and heat retention. Documented shells are acrylic; H-1512 and H-5622 are additionally described as using thickened material for long-lasting heat retention, which is relevant for longer reclined soaks.
6. Build the compliance file per market. EU buyers should reference EN 17125:2018, EN 12764:2015+A1:2018 and EN IEC 60335-2-60:2023/A11:2023. US buyers should reference CSA B45.5/IAPMO Z124, ASME A112.19.7/CSA B45.10, ASME A112.19.15 where a pressure-sealed door is involved, and third-party listing by an accredited conformity-assessment body.
7. Lock the commercial terms and documentation. The minimum order quantity is 1 unit, and payment terms are a 30% deposit with the remaining 70% balance due before shipping. The control panel manual is supplied with the unit; confirm voltage and plug type for the destination country before ordering.

Model H-1515: an indoor whirlpool bathtub documented as suitable for built-in installation in bathroom projects.

Where a Chaise-Style Whirlpool Bathtub Fits

Residential master bathrooms. The reclined geometry suits owners who use the tub for longer soaks rather than quick washing. In this setting the chaise layout is usually paired with a separate shower room so the tub does not have to serve both functions.

Hotel guest rooms and suites. Hospitality projects need a tub that photographs well and performs under repeated daily use. Documented hotel references in the Guangshun Bathtub portfolio include Wyndham Kunming, Anhui Fumao Hotel, Beijing Construction Engineering Hotel and Maldives Hot Spring Hotel.

Homestays and villas. The outdoor and indoor ranges overlap here. Models such as H-5005 and H-5509 are outdoor bathtubs designed for family gatherings, homestays, villas, hotels and spa and wellness centres, with paper core filtration, constant temperature control, ozone disinfection and ambient lighting.

Spa and wellness centres. Where the tub is one element of a treatment sequence, a combined package makes sense: massage bathtub plus steam room plus sauna room. Documented steam rooms A-082, A-090 and A-097 use a 1 × 3 kW steam engine at 110-120V/220-240V, and the A-003 sauna room uses a 1 × 5 kW sauna stove with hemlock wood and glass construction.

Accessibility renovation. Projects that need a low entry point rather than a deep soak should look at the walk-in range. H-5621, H-5622 and H-5627 are all indoor acrylic walk-in bathtubs with a 1 × 1.25 kW water pump, a 400 W air pump and a rated voltage of 110-120V/220-240V.

Model H-5622: walk-in acrylic bathtub with multi-directional massage jets, ambient lighting, a PU pillow and a spacious interior.

Configuration Comparison: Whirlpool, Walk-In and Spa Pool Models

The table shows why the chaise question cannot be answered from the product type column alone. Two models can share the same pump configuration, voltage and material and still differ in interior shape. The comparison is a starting shortlist, not a substitute for an approved interior drawing.

Frequently Asked Questions

Conclusion

A chaise bathtub is defined by one thing: an interior that lets the bather recline rather than sit. Everything else — whirlpool jets, walk-in access, built-in framing, ambient lighting — is a separate decision layered on top of that shape. Getting the order right means specifying the contour first, then the installation format, then the hydromassage hardware, then the compliance file for the destination market.

Guangshun Bathtub approaches the category from a manufacturing base established in 2004 in Foshan, Guangdong Province, with an annual output of 25,000 units and roughly 70% of production exported to the EU, USA, Middle East, Southeast Asia and Africa. The documented indoor models — H-1512, H-1511, H-1515, H-1813, H-5621, H-5622 and H-5627 — share a common pump and voltage platform of 1 × 1.25 kW water pump, 400 W air pump and 110-120V/220-240V, which simplifies specification across a project with more than one bathroom type.

For a first evaluation, request the current product catalogue and confirm the interior contour of the shortlisted model against your drawing.

Finished bathtub stock. Minimum order quantity is 1 unit, with a 30% deposit and 70% balance before shipping.

Foshan Gaoming Guangshun Sanitary Ware Co., Ltd. (Guangshun Bathtub) · No. 6, Chongchuan Industrial Zone, Yanghe Town, Gaoming District, Foshan City, Guangdong Province, China · www.guangshunsanitary.com · luckyjet03@aliyun.com · +86 189-2729-0278 · WhatsApp +86 189-2729-0278