Buffer tank series 2026

HB-100

Name: HB-100 Stainless Steel Buffer Tank
Brand: Heatlyt
SKU: HB-100

100L Stainless Steel Buffer Tank

Compact 100 litre buffer vessel designed for renewable heating systems — also specified as an accumulator tank in heat pump installations across continental Europe. Provides hydraulic separation and thermal storage for heat pumps, solar thermal, and biomass boilers. Manufactured from SUS304 stainless steel with argon-shielded precision welding.

OEM & customisation

Available from 100L to 500L. Options: SUS304/316 steel, custom connections.

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Key features

What makes the HB-100 stand out

Hydraulic separation

Ensures proper hydraulic separation between heat source and distribution circuits, improving system efficiency and reducing pump wear.

Thermal storage

100L capacity provides thermal buffering to reduce heat source cycling, extending equipment life and improving comfort.

Premium build quality

• SUS304 stainless steel body
• Argon-shielded welding
• High-density PU foam insulation
• Multiple connection ports

Technical drawing

Buffer Tank 100L · Drawing V2.0

Specifications

Packing & technical data

Parameter	Value
Model	HB-100
Capacity	100 L
Tank material	SUS304 stainless steel
Insulation	High-density PU foam
Connections	G 1" circulation ×4 · G ½" sensor ×2
Packing size	53 × 53 × 122 cm
Net weight	27 kg
Gross weight	29.5 kg

Technical Summary

Capacity: 100 Liters
Material: SUS304 Stainless Steel
Insulation: High-density PU foam
Connections: G 1" circulation, G 1/2" sensor

Commercial terms

MOQ	20ft container (models can be mixed within one container)
Lead time	About 30 days from order confirmation and deposit
Certifications	ISO 9001:2015 factory · CE marking · ErP energy label
Warranty	1 year from date of purchase
Shipping terms	FOB Shanghai

Warranty: 1 year from date of purchase for material and manufacturing defects, valid with proof of purchase.

ErP energy label

Range comparison

HB-100 vs HB-150 vs HB-200: choosing a buffer tank size

The HB-100 is the entry point of Heatlyt's buffer range at 100 litres and 27 kg net. It shares its 53 × 53 cm footprint and G 1" circulation ports with the HB-150, so the two are interchangeable on a plinth and in pipework — the HB-150 simply adds 39 cm of height. The HB-200 needs a wider 60 × 60 cm base and larger G 1½" ports.

Model	Capacity	Circulation connections	Packing size	Net weight
HB-100 (this page)	100 L	G 1" ×4	53 × 53 × 122 cm	27 kg
HB-150	150 L	G 1" ×4	53 × 53 × 161 cm	35.5 kg
HB-200	200 L	G 1½" ×4	60 × 60 × 158 cm	39.5 kg

All three carry the same SUS304 body, high-density PU foam insulation and G ½" sensor pockets ×2, and ship on identical commercial terms — 20ft container MOQ, about 30 days lead time, FOB Shanghai. To pick a size from the heat pump's output rather than from the model list, use the buffer tank sizing calculator or the buffer tank sizing guide for heat pump systems.

Common questions

HB-100 frequently asked questions

What is the minimum order quantity for the HB-100?

Heatlyt supplies the HB-100 on a 20ft container minimum order, and models can be mixed within one container — buffer tanks, DHW cylinders and duo tanks together — so distributors can balance stock across the range. Quotes are issued FOB Shanghai, and production takes about 30 days from order confirmation and deposit.

Which certifications does the HB-100 carry?

The HB-100 is built in an ISO 9001:2015 certified factory, carries CE marking for the European market, and ships with the ErP energy label shown above. The SUS304 body is joined by argon-shielded welding, the process that keeps a weld seam's corrosion resistance close to that of the parent steel.

What are the HB-100's dimensions and connection sizes?

The HB-100 ships packed at 53 × 53 × 122 cm, weighing 27 kg net and 29.5 kg gross. It carries four G 1" circulation connections and two G ½" sensor pockets, positioned as shown on the dimensional drawing above. Those packed dimensions are the figures to quote when calculating a 20ft container load.

Is a 100 litre buffer tank big enough for a domestic heat pump?

Buffer volume follows the heat pump's output and its defrost demand, not the floor area of the house — modern air-source units need roughly 2–4 litres of stored water per kW of capacity for a reliable defrost cycle. On that basis the HB-100 suits smaller residential air-source installations; Heatlyt's buffer tank sizing guide works the calculation through across the HB range.