Buffer tank series 2026

HB-150

Name: HB-150 Stainless Steel Buffer Tank
Brand: Heatlyt
SKU: HB-150

150L Stainless Steel Buffer Tank

Mid-range 150 litre buffer vessel for renewable heating systems — also known as an accumulator tank in continental European specifications. Provides hydraulic separation and improved thermal capacity for heat pumps, solar thermal, and biomass boilers — the step up from the HB-100 for medium-sized installations.

OEM & customisation

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

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Key features

What makes the HB-150 stand out

Hydraulic separation

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

Thermal storage

150L capacity provides improved thermal buffering over the 100L model, further reducing heat source cycling and extending equipment life.

Premium build quality

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

Technical drawing

HB-150 Dimensional drawing

Specifications

Packing & technical data

Parameter	Value
Model	HB-150
Capacity	150 L
Tank material	SUS304 stainless steel
Insulation	High-density PU foam
Connections	G 1" circulation ×4 · G ½" sensor ×2
Packing size	53 × 53 × 161 cm
Net weight	35.5 kg
Gross weight	38 kg

Technical Summary

Capacity: 150 Liters
Material: SUS304 Stainless Steel
Insulation: High-density PU foam
Connections: Standard multiple connection ports

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-150 stores 150 litres in the same 53 × 53 cm footprint as the HB-100, gaining its extra 50 litres in height — 161 cm packed against the HB-100's 122 cm. Both use G 1" circulation ports, so the two are interchangeable on a plinth and in pipework; stepping up to the HB-200 means a wider 60 × 60 cm base and larger G 1½" ports.

Model	Capacity	Circulation connections	Packing size	Net weight
HB-100	100 L	G 1" ×4	53 × 53 × 122 cm	27 kg
HB-150 (this page)	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-150 frequently asked questions

What is the minimum order quantity for the HB-150?

Heatlyt supplies the HB-150 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-150 carry?

The HB-150 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-150's dimensions and shipping weight?

The HB-150 ships packed at 53 × 53 × 161 cm, weighing 35.5 kg net and 38 kg gross. It shares the 53 cm footprint of the HB-100 and gains its extra 50 litres in height, so the two models load onto the same pallet base. The dimensional drawing above gives connection positions and heights.

Should I specify the 150 litre HB-150 or the 100 litre HB-100?

Buffer volume follows the heat pump's output and its defrost demand, not the floor area of the building — modern air-source units need roughly 2–4 litres of stored water per kW of capacity for a reliable defrost cycle. The HB-150 is the step up for medium-sized installations where the HB-100 leaves too little margin; Heatlyt's buffer tank sizing guide works the calculation through across the HB range.