07837880027 Hot Water Tank Replacement SW11 Pimlico SW6 Fulham SW3 Cold Water Cylinder Installers W9 Stockwell W14 Uxbridge Road

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 

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