Thermal Stores
Contemporary thermal stores for storage of Hot Water
Energy Efficient modern thermal stores designed to provide mains pressurised hot water for flats, apartments, bungalows & houses.
Our range consists of the HeatStream Electric and HeatStream Electric Plus thermal stores. The HeatStream Electric is best suited for flats, apartments or electrically-heated homes, The HeatStream Electric offers a solution in any property where Electricity is the primary source of energy. Its partner, the HeatStream Electric PLUS typically caters to properties where both electricity and a traditional primary heat source, such as a boiler or a district heating, are available. Easy Installation, Low Maintenance and Compatibility with Multiple Heat Sources are some of the many key features that make the HeatStream, a perfect product for all your hot water requirements.
Key Benefits
Ideal for Flats/Apartments – The HeatStream thermal store produces mains pressurised hot water in flats and apartments utilising electricity efficiently. It is open vented and therefore not subject to building regulations and discharge requirements associated with traditional unvented cylinders.
Energy Efficient – With an ErP rating of B and a standing heat loss from 1.12kWh per day, the HeatStream meets the high standards for energy efficiency needed in today’s homes. Helping specifiers to meet SAP requirements and giving consumers real value for money.
Smaller Footprint – A convenient square 520mm x 520mm footprint, making it perfect for where space is at a premium. All thermal stores can fit easily through a standard door width or a small airing cupboard. More hot water storage potential within a smaller footprint.
Easy Installation – With very few components and all connections on top, the thermal store can be installed very easily. No G3 qualification requirement for installation, and no requirement for expansion vessel or T&P relief valve.
Compatible with Multiple Heat Sources – The range is compatible with a variety of heat sources such as Oil, Gas, LPG and district heating.
Durable & Stable Product – Made from long-lasting, non-corrosive and heat-durable polyethylene, this thermal store is tough and robust. The outer tank is made from tough durable Polyethylene, reducing the chances of damage during transportation. The inner tank is made from non-corrosive Polypropylene, making it an ideal product even in poor water quality areas.
Low Maintenance Costs – Extremely low maintenance & with minimal high quality parts the HeatStream delivers a very low overall lifetime costs. A mandatory annual safety inspection is not required with this product.
Thermal Store - FAQS
In this Thermal Store FAQ section, we aim to demystify these innovative systems, addressing common queries about their functionality, benefits, and suitability for various residential or commercial settings. If you can’t find the answer you’re looking for, don’t hesitate to reach out to us.
Can I Use HeatStream Electric / HeatSteam Electric Plus as an Alternative to the Gledhill PulsaCoil?
When comparing the HeatStream Electric series to the Gledhill PulsaCoil as a thermal store option for residential properties, several aspects of the HeatStream models stand out favourably.
Advanced Efficiency and Overfill Feature
The HeatStream Electric series, including the PLUS versions, are designed with modern efficiency standards in mind. Its ErP ‘B’ rating signifies high energy efficiency, making it an economical and environmentally friendly choice.
Overfill Feature
The Overfill feature in selected products, enhances its applicability in various building layouts, as it efficiently manages excess water in scenarios where external or internal waste pipe connections are not feasible.
Designed for Modern Living Spaces
The HeatStream Electric series caters well to the demands of modern urban living, with a focus on space-saving designs without compromising on capacity. This makes them particularly suitable for smaller properties or where space is at a premium.
In contrast, while the Gledhill Pulsacoil series, such as the Pulsacoil Stainless, is a reputable option with its own set of benefits, the HeatStream Electric series’ additional features like higher energy efficiency ratings, adaptability in installation, and innovative Overfill feature make it a compelling choice for your thermal store.
How Does a Thermal Storage System Work?
A thermal storage system, commonly referred to as a thermal store cylinder, is a device used in domestic and commercial buildings to store heat energy for later use.
It works by heating up a volume of water, which then retains this heat over time. This heated water doesn’t directly flow to the taps or radiators; instead, it transfers its heat to the water or air that does.
The primary advantage of a thermal storage system is its ability to manage and balance energy demands, reducing the need for constant heating and thus saving on energy costs.
Thermal Store Cylinder Explained
A thermal store cylinder is a type of hot water storage system that differs significantly from conventional unvented hot water cylinders or direct water heaters.
Thermal Store – Not Hot Water
Unlike conventional systems that store hot water, thermal store cylinders hold heat in a body of water at a high temperature. This heat is later used to warm up cold mains water.
Thermal store cylinders can be either open vented or sealed systems. Open vented systems are typically at atmospheric pressure and may have a vent pipe, while sealed systems are pressurised.
Thermal Store Water Heater
Thermal Stores can be heated using various sources such as electricity (via immersion heaters), gas boilers, wood burners, solar panels, or heat pumps. This versatility also makes them suitable for integration with renewable energy sources.
Thermal store cylinders are ideal for those looking to use alternative and renewable energy sources or require a system that provides mains pressure hot water without the risks associated with high-pressure unvented systems.
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Thermal Stores
Harlequin’s range of Thermal Stores offers a modern, energy-efficient solution for providing mains-pressurised hot water to flats, apartments, bungalows, and houses. Our thermal stores are designed for easy installation, low maintenance, and compatibility with multiple heat sources. Upgrade your home’s hot water system with Harlequin today.