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Water heaters
Water heaters are used to provide a continuous supply of hot water, which is stored in an insulated tank. They are available for domestic / residential applications as well as larger commercial or public buildings. Read More
Vented water heaters rely on a volume of stored cold water, usually kept in a plastic tank, to feed the hot water storage cylinder. Unvented water heaters use mains water pressure to push the water out to the taps or shower.
The use of direct heat to fire the boiler can be very efficient, due to the advances made in modern burner technology.
An indirect water heater uses a heat exchanger to heat the water, or is fired by the central heating system with a conventional boiler, solar thermal or district heating system. They are sometimes known as water storage tanks or thermal stores.
Insulation material is very important and is most commonly polyurethane foam.
Water heaters - helping you find the best solution for your project.
Floor-standing, indirect unvented twin coil calorifiers are available in 130-305L capacities for domestic and residential applications, and 400-100,000L capacities for commercial applications. They have ergonomically designed stainless steel tanks that are pressure tested to 15 bar with a grey plastosol outer case finish as standard. All the- PRODUCT
- MHG Heating
STEELflow Stainless Steel Unvented Cylinder
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McDonald Water Storage is synonymous with superior quality hot water cylinders and its STEELflow unvented cylinders are no exception. Manufactured from premium grade duplex stainless steel ensuring superior corrosion resistance, STEELflow provides uncompromising efficiency and high quality standards, with high performance cylinders for those on a- PRODUCT
- McDonald Water Storage
The Aquastor Eco range of unvented indirect hot water cylinders feature a duplex stainless steel inner cylinder and are manufactured to the highest standards. Available in a range of cylinder sizes with an ErP B classification. 22mm hot and cold water connections; 0.5" temperature and pressure relief valve; 3.0 bar maximum operating pressure- PRODUCT
- Stuart Turner
Zip InLine DEX/DBX electronic instantaneous water heaters can be used to provide a constant supply of hot water for handwash, sinks, showers and baths at an exact (selected) temperature, to single or multiple outlets. It uses a highly efficient bare wire heating system. The heating power electronically adjusts to compensate for variable inlet- PRODUCT
- Zip Heaters
Thermal stores
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For over twelve years, Telford has manufactured a range of thermal stores under the Tristar and Tristor brand names. The range started with three different models: combination, open vented and sealed system. These were designed for boiler applications and fully electric heat sources. Telford now offers over 100 models, and can also provide bespoke- PRODUCT
- Telford Copper & Stainless Cylinders
The Zip InLine® CEX electric, instantaneous water heater is designed to supply single or multiple outlets with a constant supply of hot water at a selected temperature. It has a highly efficient, bare wire heating system. The heating power is electronically adjusted to compensate for variable inlet pressures and temperatures. There is no stored- PRODUCT
- Zip Heaters
THERMflow Thermal Store Hot Water System
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With a total focus on high performance and reliability, our THERMflow thermal store cylinder is designed to: heat up quicker than competitors thanks to an increase in copper coil size achieve a consistently high water temperature due to a combination of our unique design and copper’s increased efficiency virtually eliminate any queries or issues- PRODUCT
- McDonald Water Storage
TyphoonCR storage water heaters
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The TyphoonCR cylinders come with a high recovery coil, this open vented system is suitable for use with boilers where quicker recovery times are required, perfect for retro fit situations this cylinder can even come in bespoke designs. Manufactured in the United Kingdom to a very high standard, we have 30 years of experience within the hot water- PRODUCT
- Telford Copper & Stainless Cylinders
ELSOflow - Elson Replacement Products
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The ELSOflow rectangular, copper hot water tank is the perfect like for like replacement for the original Elson hot water tanks. The tanks are available as either a traditional combination tank (providing gravity hot water) or as a thermal store unit (delivering mains pressure hot water). McDonald Water Storage launched their ELSOflow rectangular- PRODUCT
- McDonald Water Storage
Stainless steel vented cylinder
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Our Stainless Vented cylinders come in Direct and Indirect models, this open vented system can be suitable for use with boilers or electric only applications, perfect for retro fit situations this cylinder can even come in bespoke designs. Manufactured in the United Kingdom to a very high standard, we have 30 years of experience within the hot- PRODUCT
- Telford Copper & Stainless Cylinders
ELECTRAflow Electric Thermal Store
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The ELECTRAflow is an integrated heating and hot water thermal store, powered by immersion elements and controlled by a new and improved purpose designed controller. ELECTRAflow provides the comfort and convenience from the most customisable electric wet central heating and hot water solution for apartment applications, with each unit bespoke- PRODUCT
- McDonald Water Storage
Maxistore water storage heater
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Maxistore cylinders come in Direct models with 2 Immersion heaters, suitable for electric only applications, perfect for retro fit situations this cylinder can even come in bespoke designs. Manufactured in the United Kingdom to a very high standard, we have 30 years of experience within the hot water cylinder industry- PRODUCT
- Telford Copper & Stainless Cylinders
Megaflo eco unvented water heater
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Megaflo eco units are manufactured in the UK to a very high quality using the latest techniques. They boast numerous innovative features designed to ensure high levels of operating efficiency. Suitable for home environments, workplaces or demanding applications such as sports and health club shower rooms, Megaflo eco provides high performance- PRODUCT
- Baxi Heating UK
Domestic vented water cylinders are available in indirect, direct and single feed versions. Indirect cylinders are designed to be linked to a remote heat source, such as a gas boiler or coal fire. The water within the central heating system is heated by the remote heat source and is passed through the coil in the cylinder. As the primary normally- PRODUCT
- Telford Copper & Stainless Cylinders
CUBEflow Rectangular Thermal Store
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Our CUBEflow thermal store range is specifically designed for installations into restricted spaces, providing a high performance, mains pressure hot water solution which delivers enormous benefits. With the rectangular design of the store, it takes up to 27% less space than an equivalent volume cylinder, freeing up space for other uses. Our- PRODUCT
- McDonald Water Storage
Steam injection heater
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The Horne Steam Injection Heater (SIH) has been developed for the rapid efficient heating of a tank (or sump) of water and can be utilised in various industrial and process applications. Steam is directly introduced, by injection, into the water tank to raise its temperature. The heater is extremely efficient as the full latent heat of the steam- PRODUCT
- Horne Engineering
Combination water storage heaters
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Combination cylinders come with a built in header tank, this gravity fed system is suitable for use in domestic properties, perfect for retro fit situations this cylinder can even come in bespoke designs. Manufactured in the United Kingdom to a very high standard, we have 30 years of experience within the hot water cylinder industry- PRODUCT
- Telford Copper & Stainless Cylinders
Zip InLine ES compact instantaneous water heaters have an extremely energy efficient bare wire electronic heating system. It is designed to economically supply water to a single outlet such as a handwash area with limited space. The system heats the water automatically as it flows through, without wasting energy in standby operation. The heating- PRODUCT
- Zip Heaters
Powerstock calorifiers and storage tanks
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Powerstock calorifiers offers a flexible approach to indirect heating and storage of hot water, using a choice of heat generators. High-efficiency gas-fired boilers are commonly used with calorifiers as the prime energy source, but with the move towards renewable energy, alternative technologies can be applied. Indirect-fired heating for hot water- PRODUCT
- Hamworthy Heating
Floor-standing, indirect unvented calorifiers are available in 80-305L capacities for domestic and residential applications, and 400-100,000L capacities for commercial applications. They have ergonomically designed stainless steel tanks that are pressure tested to 15 bar with a grey plastosol outer case finish as standard. All the electrical and- PRODUCT
- MHG Heating
Tornado stainless indirect unvented cylinder
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Indirect models are supplied with an internal coil suitable to be fed heat by a gas or oil boiler. All models come complete with a 3kw immersion heater as backup and 22mm compression fittings all over. The Tornado comes with built in thermal expansion so does not need a remote expansion vessel: lifetime guarantee; 90-300 litre domestic range; high- PRODUCT
- Telford Copper & Stainless Cylinders
Prepackaged plate semi-storage calorifiers
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Prepackaged plate semi-storage calorifiers are designed for domestic hot water applications where there is intermittent demand and/or limited plant room space. They are available in 500-3000L capacities. They incorporate a buffer vessel, an efficient packaged heat exchanger, a plate heat exchanger, a circulating pump, a thermostat and stainless- PRODUCT
- MHG Heating
Santon PremierPlus water heater
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Designed specifically for UK water conditions, PremierPlus provides cost-effective mains pressure water heating. Manufactured to the highest standards from Duplex stainless steel, the units offer exceptional corrosion resistance and a long life expectancy. Advanced primary coil and cold water controls give rapid re-heat and good flow rate- PRODUCT
- Baxi Heating UK
Indirect models are supplied with an internal coil suitable to be fed heat by a gas or oil boiler. All models come complete with a 3kw immersion heater as backup and 22mm compression fittings all over. The Tempest model is supplied with a remote expansion vessel with a factory fitted wall mounting bracket- PRODUCT
- Telford Copper & Stainless Cylinders

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