Stainless steel tanks · 2026 range

Stainless steel water tank manufacturer — OEM & wholesale supply

SUS304 stainless steel buffer vessels and hot water cylinders engineered for heat pumps, solar thermal and biomass systems. Buffer, DHW, dual coil and duo models — made in Hangzhou, China.

View all products Request a quote

Product range

All products
Buffer tanks
DHW tanks
Duo tanks
Buffer HB-100 Buffer Tank

HB-100

100L · Stainless Steel Buffer Tank

Compact buffer tank for hydraulic separation in heat pump and solar thermal systems. Reduces pump cycling and extends equipment life.

SUS304 · PU insulation Details
Buffer HB-150 Buffer Tank

HB-150

150L · Stainless Steel Buffer Tank

Mid-range buffer tank offering improved thermal capacity for medium-sized heating installations and heat pump systems.

SUS304 · PU insulation Details
Buffer HB-200 Buffer Tank

HB-200

200L · Stainless Steel Buffer Tank

High-capacity buffer tank for larger heating systems. Maximises efficiency of heat pump and biomass installations.

SUS304 · PU insulation Details
DHW HC-200 Single Coil Tank

HC-200

200L · Single Coil DHW Tank

200L domestic hot water tank with 3.1 m² stainless steel coil. Ideal for heat pumps and solar thermal systems.

3.1 m² coil · SUS316 Details
DHW HC-300 Single Coil Tank

HC-300

300L · Single Coil DHW Tank

300L DHW tank with 4.7 m² coil for large households or light commercial applications requiring high hot water demand.

4.7 m² coil · SUS316 Details
DHW HC-400 Single Coil Tank

HC-400

400L · Single Coil DHW Tank

Large-capacity 400L DHW tank with 5.0 m² coil. Designed for high-demand residential or small commercial use.

5.0 m² coil · SUS316 Details
DHW HDC-300 Dual Coil Tank

HDC-300

300L · Dual Coil DHW Tank

300L tank with two independent coils (3.2 + 1.3 m²). Connects heat pump and solar thermal simultaneously for maximum efficiency.

4.5 m² dual coil Details
Duo HW-200+60 Duo Tank

HW-200+60

260L total · Buffer + DHW Duo Tank

Space-saving integrated unit combining 200L DHW with 60L buffer in one. Complete heating system functionality in a single tank.

3.1 m² coil · 260L total Details

Why Heatlyt

Argon-shielded welding

Liquid-cooled welding zone with full argon gas protection on both sides ensures consistent, reliable weld quality and long-term integrity.

SUS304 & 316 stainless steel

Food-grade stainless steel throughout — tank body in SUS304, heat exchange coils in SUS316 for superior corrosion resistance.

ErP certified

All models carry ErP energy rating labels, meeting EU energy efficiency regulations for water heating products.

OEM & custom manufacturing

Custom dimensions, additional connections, insulation grades and special coil configurations available. Minimum order quantities apply.

About Heatlyt

Heatlyt is a professional manufacturer of stainless steel water storage tanks, part of Heatly Energy Co., Ltd., headquartered at Holley Group Science Park in Hangzhou, China.

We design and produce buffer tanks (also known as buffer vessels), domestic hot water cylinders, dual coil tanks and integrated duo systems used in heat pump installations, solar thermal systems, biomass boilers and floor heating across Europe, Asia, and beyond.

Every Heatlyt tank is manufactured using SUS304 stainless steel with a liquid-cooled, argon-shielded welding process — ensuring weld reliability, hygiene, and long service life.

SUS304
Food-grade stainless steel body
SUS316
Coil material for DHW tanks
100–500L
Available tank capacities
OEM
Custom manufacturing available
Heatlyt manufacturing Heatlyt tank

Frequently asked questions

What is your Minimum Order Quantity (MOQ)?

Our standard MOQ is a 20ft container. We allow mixing different models (Buffer, DHW, Duo tanks) within the same container to help our partners maintain a balanced inventory.

What are your shipping terms?

We typically quote on a FOB Shanghai basis. Our factory is located near Hangzhou, which offers excellent logistics to Shanghai Port, one of the world's most efficient shipping hubs.

What is the typical production lead time?

For standard container orders, our lead time is approximately 30 days from order confirmation and deposit receipt. Custom OEM orders may require additional time depending on the technical specifications.

Do you offer OEM/Custom manufacturing?

Yes. We specialize in OEM production. We can customize tank dimensions, connection sizes, insulation thickness, and coil configurations based on your technical drawings or specific requirements.

Get in touch

Ready to discuss your project? Send us your requirements and our team will respond promptly.

Address

Room 412, Building 1, Holley Group Science Park
No. 181 Wuchang Road, Hangzhou, 310023 China

Telephone

+86 571 8610 0216

Send us a message

ISO 9001:2015
Quality Management
CE Certified
European Standards
ErP Ready
Energy Efficiency
RoHS Compliant
Hazardous Substances