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Gledhill Stainless Lite Plus 150 vs Viessmann Vitocal 150-A06

The Gledhill Stainless Lite Plus 150 is a indirect unvented hot water cylinder, 150 litres. The Viessmann Vitocal 150-A06 is a r290 air source heat pump, 4.8 kw heat output.

Last reviewed 13 September 2026

Specifications side by side

Gledhill Stainless Lite Plus 150Viessmann Vitocal 150-A06
Dimensions1118 mm high x 550 mm diameter920 x 450 x 360 mm (H x W x D) (indoor unit); 841 x 1144 x 600 mm (H x W x D, single fan) (outdoor unit)
Weight26 kg empty, 174 kg full162 kg (single fan) (outdoor unit)
Capacity150 litres-
Heat-up time25 minutes-
Relief valve setting6 bar and 95C-
Immersion heater3kW incoloy immersion, back-up-
ErP ratingB-
Heat output-4.8 kW at A7/W35
COP-4.7-5.0 at A7/W35
Refrigerant-R290 (propane), GWP 0.02
Sound power-51 dB(A) assessed total at A7/W55
Max flow temperature-70C down to -10C outdoor

Sources: Gledhill Stainless Lite Plus 150, Viessmann Vitocal 150-A06. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the Stainless Lite Plus 150 if...

A 150 litre indirect cylinder from Gledhill's Stainless Lite Plus range, sized for a small to medium house. Its corrugated coil reheats in about 25 minutes, and the range carries a 25 year guarantee on the cylinder body.

Full Stainless Lite Plus 150 specifications →

Buy or hire the Vitocal 150-A06 if...

A Vitocal 150-A monobloc-style split heat pump using the natural refrigerant R290, rated at 4.8kW and reaching a 70C flow for boiler-replacement work. Viessmann-trained installers can extend the standard warranty on registration.

Full Vitocal 150-A06 specifications →

Common questions

What is the difference between the Gledhill Stainless Lite Plus 150 and the Viessmann Vitocal 150-A06?

The Gledhill Stainless Lite Plus 150 is a indirect unvented hot water cylinder, 150 litres; the Viessmann Vitocal 150-A06 is a r290 air source heat pump, 4.8 kW heat output.

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