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Unvented systems are fed directly from the cold water mains supply and offer a number of benefits compared to conventional systems. Higher pressure and flow rates at all hot taps, balanced hot and cold water supplies, no special taps required.
Get to know Benefits of Unvented Water Cylinder
• Fast recover rates (eg. 15 minutes for CL125HE)
• Exceeds CHeSS Best Practice for heat recovery and insulation
• CFC free insulation for maximum heat retention
• No anode to check or replace
• Long-life Duplex stainless steel interior
• 25-year transferable cylinder guarantee
• Patented internal expansion system
• No external expansion vessel
If the vessel fails, an expansion release valve protects the system by releasing water via the discharge pipe.
• If both thermostats fail, and the water reaches 95°C, a temperature release valve discharges all water to the outside.
• A normal thermostat maintains the temperature of the water below 65°C.
• A second thermostat switches off the immersion heater and shuts off water from the boiler should the main thermostat fail and the temperature reaches 90°C.
Megaflow are renowned for quality unvented hot water cylinders and are manufactured by a company called
Heatrae Sadia. Heatrae Sadia are the UK's leading manufacturer of hot water systems with their flagship brand ‘Megaflow‘ leading the way in unvented hot water cylinders. Megaflow are not the only brand (if perhaps the most well known) of unvented hot water cylinders we also install, maintain and service other cylinder makes such as Ariston and Ozo.
- Internal air-gap with patented floating baffle
- Strong, Duplex stainless steel construction
- High performance 'coil-in-coil' heat exchanger
- No sacrificial anode (eliminates need for annual inspection)
- Appliance-like plastic-coated outer case
- Patented cold water inlet diffuser minimises mixing of cold and hot water
- Water inlet controls increase flow rates by up to 35%
- Improved performance even at 1 bar
- Every unit tested to 15 bar (217psi)
- 25-year transferable cylinder guarantee
- ½" temperature and pressure relief valve
The above features describe MegaFlow's new range of HE cylinders which use a ‘coil in coil’ heat exchanger to deliver more hot water quicker than previous models. Please also note that older models may differ in specification, always consult your manual. There are many benefits of having un-vented hot water cylinder
- High performance showering –throughout the home
- Fast-filling baths
- Quieter mains pressure system (no noisy cistern in the loft)
- Balanced water pressure - no surprises
- Fast recover rates (eg. 15 minutes for CL125HE)
- Exceeds CHeSS Best Practice for heat recovery and insulation
- CFC free insulation for maximum heat retention
- No anode to check or replace
- Mains feed hygienic hot water
- Appliance quality, easy-clean finish
- Long-life Duplex stainless steel interior
- 25-year transferable cylinder guarantee
- Patented internal expansion system
- No external expansion vessel
- Complete with mains water isolating valve
- All units are fully factory tested to ensure reliability
- Neater and quicker installation
- Higher Flow ratefor efficient hot water delivery
Commercial & Domestic gas plumbing and heating engineer / Bathroom suite repair and installer / Energy efficiency boiler system installer London / Emergency plumber in London / Gas safe corgi registered engineer London/ Valliant boiler repair and installation London / Emergency awarded gas safe corgi registered engineer Hither Green SE6 boiler installation Hither Green boiler replacement Hither Green boiler installer Hither Green Hither Green SE6, Bellingham SE6 boiler installation Bellingham boiler replacement Bellingham boiler installer Bellingham Bellingham SE6, Charlton SE7 boiler installation Charlton boiler replacement Charlton boiler installer Charlton Charlton SE7, Deptford SE8 boiler installation Deptford boiler replacement Deptford boiler installer Deptford Deptford SE8, Eltham SE9 boiler installation Eltham boiler replacement Eltham boiler installer Eltham Eltham SE9, Mottingham SE9 boiler installation Mottingham boiler replacement Mottingham boiler installer Mottingham Mottingham SE9, Greenwich SE10 boiler installation Greenwich boiler replacement Greenwich boiler installer Greenwich Greenwich SE10, Kennington SE11 boiler installation Kennington boiler replacement Central London – corgi heating plumbing engineer,Emergency 24 Hrs family run recommended plumbing engineer Heating engineer family run recommended plumber in London EC1 Clerkenwell EC1 Farringdon EC1 Aldersgate EC1 Angel EC1Aldgate EC1 Finsbury EC1 Barbican EC1 Goswell EC1 St. Luke's Emergency 24 Hrs family run recommended Central heating inspection and installer EC2 Bank recommended Plumber EC2 Bishopsgate EC2 Broad Street EC2 Broadgate EC2 Cheapside street EC2 Liverpool Street EC2 London Wall EC2 Moorgate EC2 Old Street EC2 Shoreditch EC2 Strand EC2 Smithfield EC3 Billingsgate Emergency 24 Hrs family run recommended boiler installation shower installation installer London EC3 Fenchurch Street EC3 Tower Hill EC3 Monument EC3Tower of London Emergency 24 Hrs plumber in London corgi gas engineer plumber in London EC4 Blackfriars EC4 Fleet Street EC4 Cannon EC4St. Paul's EC4 Mansion House EC4Ludgate Hill WC1 Holborn Viaduct Emergency 24 Hrs family run recommended plumber corgi registered Plumber WC1 Holborn WC1 Gray's Inn WC1 Bloomsbury Emergency 24 Hrs family run recommended plumber corgi registered WC2 Leicester Square WC2 Covent Garden WC2 Soho London plumber, East London – 24 hrs emergency plumber corgi registered engineer,Emergency 24 Hrs family run recommended plumbing engineer East London Plumber E1Aldgate East E1 Commercial Road East London Heating engineer E1 Whitechapel Plumber corgi E1 Wapping E1 Mile End Road E1 Spitalfields family run recommended Plumber E1 Stepney E1 Stepney Green reliable plumber E1 Mile End E1 Shadwell Emergency 24 Hrs family run recommended plumbing engineer Heating engineer family run recommended plumber in LondonE2 Bethnal Green E2 Shoreditch E2 Sewardstone E2 Victoria Park Plumber E2 Tower Hamlets recommended boiler installation shower installation installer London E3 Bow Church E3 Bromley corgi registered engineer E3 Bow E3 Devons Road gas engineer plumber E3 Old Ford E3 Mile End Emergency 24 Hrs family run recommended boiler installation shower installation installer London E4 Chingford E4 Chingford Green plumber trusted E4 Chingford Hatch E4 Island Gardens E4 Hale End Radiator leak Radiator breakdown services and repairE4 Gilwell Park E4 Highams Park reliable 24 hrs Gas landlord safety certificate by corgi gas engineer in London,E11 Leytonstone Plumber E11 Wanstead E11 Wanstead Park Plumber in London recommended family run E11 Snaresbrook E12 Aldersbrook E12 Little Ilford family run recommended plumber E12 Manor Park E13 Plaistow E13 Newham Emergency 24 Hrs family run recommended plumber Heating Service in London E14 Blackwall E14 Canary Wharf E14 Cubitt Town E14 Docklands E14 East India Dock Road E14 East India Heron E14 Quays boiler installation shower installation installer London E14 Isle of Dogs E14 Limehouse E14 London Arena family run recommended plumber E14 Millwall E14 Mudchute E14 Poplar E14 South Quay E14 West India Quay E14 Westferry Emergency 24 Hrs family run recommended plumber Heating Service in London E15 Pudding Mill Lane E15 West Ham E15 Stratford Emergency 24 Hrs recommended plumber Heating Service in London E16 Canning Town E16 Custom House Radiator leak Radiator breakdown services and repairE16 North Woolwich E16 Silvertown E16 Victoria Docks Emergency 24 Hrs family run recommended plumber Heating Service in London E17 Blackhorse Road E17 Higham Hill E17 Walthamstow E17 Walthamstow Central E17 Upper Walthamstow
