HDWS

Heat Pump Solar Tank

Sizes and Availability

5 sizes

As of Oct 28, 2026

Size	Implementation	Item No.	Efficiency Class	heat loss	Availability
350	silver	168350	B	75 W	In stock
500	silver	168500	B	79 W	Delivery time: approx. 4–6 weeks
600	silver	168600	B	79 W	In stock

2 of 2 combinations available for immediate delivery Only items available for immediate delivery

Size	Tank without insulation	Ecoline Vlies silver
750	750, Tanks without insulation: Diameter 790 mm Weight 270 kg Item No. 168750 In stock	750, Ecoline Vlies silver: Efficiency Class C 133 W Item No. 840327 Available immediately
1000	1000, Tanks without insulation: Diameter 790 mm Weight 310 kg Item No. 1681000 In stock	1000, Ecoline Vlies silver: Efficiency Class C 142 W Item No. 840328 Available immediately

The HDWS heat pump solar tank is specifically designed for use with a combination of a heat pump and a solar system.

Insulation: Up to Type 600: 75 mm PUR rigid foam (directly foamed)
with two double-wound smooth-tube heat exchangers (1-inch tubing)
Highest build quality
High-quality S275JR steel in accordance with EN 10025, manufactured in accordance with EN 12897:2006
Enameled in accordance with DIN 4753
Operating pressure: 10 bar
Test pressure: 16 bar
Maximum operating temperature: 95°C
Up to a 5-year warranty (with proof of maintenance)