1000 Litre Hot Water Cylinder

1000 Litre hot water cylinder / calorifiers

1000 Litre hot water cylinder from Flexiheat UK

Our 1000 Litre hot water cylinders, with their high levels of insulation for optimum heat retention and large heat exchanger that ensure rapid heat recovery times and outstanding high flow rates for continuous performance during periods of high domestic hot water demand, are the calorifiers to use for commercial properties or commercial premises such as office blocks, leisure centres, schools or health care facilities.

Domestic hot water cylinders

Our 1000 litre domestic hot water cylinder range are of the highest quality and includes indirect models that offer the choice of either a standard size heat exchanger coil or an extra large coil heat exchanger, providing significantly higher performance levels for high demand domestic hot water heating.

You can equip either hot water cylinder option with an immersion heater (electric heating elements) to supplement the heating coil or to provide backup hot water heating.

Our most popular 1000 litre domestic hot water indirect water heater is our extra-large heating coil version designated the “ELC” range. These have outstanding high flow rates and rapid heat recovery times. These are detailed in the following brochure – 

ELC Large coil indirect cylinders for heat pumps or high recovery rates brochure – Flexiheat UK

When the heat source is heating water at 80°C/60°C flow and return temperatures to the tank, and a flow rate of 9.3 m3/h our 1,000 Litre nominal (900 Liters actual) indirect water heater will produce an abundant and powerful supply of 216 KW of heat delivered.

Indirect hot water storage calorifiers

Our 1000 litre indirect hot water cylinder is simple to install and is the perfect solution for almost any location without compromising performance.

They can be used on unvented DHW systems (cold water mains fed) by a supplied external expansion vessel to take up the heated water expansion, making them unvented cylinders or an open vented domestic hot water system.We recommend our stainless steel version for open vented DHW systems.

Air source heat pumps hot water cylinder

For more demanding applications, such as domestic hot water heating with heat pumps, you generally need to use our extra large coil high performance heat exchanger indirect models to ensure you can get the performance required from the hot water cylinder.

Often, you will need to install an immersion heater to the 1000l hot water cylinder, as heat pump flow rates typically reach only 55 degrees C, which is insufficient to raise the hot water temperature above the 60 degrees C required for anti-Legionella purposes, as domestic hot potable water needs to be stored at least at this temperature in domestic hot water cylinders to prevent legionella.

Gas Boiler or Oil Boiler

A gas boiler can provide an abundant and powerful supply of hot water flow to the hot water cylinder heating coil at temperatures of 80°C or so; it is the same for an oil boiler. The higher the hot water temperature, the better the performance of the 1000 litre hot water tank.

Solar water heating

A solar thermal hot water system can also be used as a heat source to power this 1000 litre hot water tank.

Immersion heater options for our 1000l hot water cylinder

We have a full range of various kW output immersion heaters manufactured in stainless steel with a control thermostat to either provide top-up or backup water heating to the hot water system.

The larger the immersion heater, the faster the domestic water will heat.

Insulation on the 1000 Litre domestic hot water cylinder

These 1000 litre hot water tanks with an indirect heating coil are compliant with the ErP regulations for energy efficiency for heat retention, with an ErP “C” energy efficiency rating or above for this hot water storage unit.

Cathodic protection 

Our glass lined 1000L hot water cylinder comes supplied with a sacrificial anode as standard; this can be upgraded to a high performance permanent electronic anode on all capacities of this hot water cylinder range with outstanding high flow rates.

We have a stainless steel option for a 1000 litre hot water tank. Our 316-grade stainless steel tanks do not require cathodic protection as standard as they have the best corrosion resistance.

Contact Flexiheat UK

For more details, check stock, lead time, delivery, price, or purchase our 1000 Litre hot water cylinder, as we sell our competitively priced 1000l water heater directly. Please contact our sales team at 01202 822221 or use our site email contact form.