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Unvented Hot Water Cylinders

G3 certified installation and maintenance of pressurised unvented cylinders. Mains-pressure hot water for powerful showers and faster filling baths across Warwickshire.

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Why Choose an Unvented Cylinder?

Pressurised hot water systems offer superior performance

🚿 Powerful Showers

Mains-pressure hot water means no more weak, gravity-fed showers. Enjoy powerful, consistent flow even on upper floors.

⚡ Faster Reheat

Unvented cylinders recover hot water quickly — ideal for larger families or homes with high hot water demand.

📦 Compact Design

No cold water storage tank in the loft. Frees up space and reduces risk of freezing or leaks in the attic.

🔧 Works with Most Boilers

Compatible with gas boilers, heat pumps, solar thermal, and immersion heaters for backup.

Our Unvented Cylinder Service

Professional installation and maintenance from G3 certified engineers

1

📋 Home Survey & Assessment

We visit your home to assess your current hot water system and understand your needs.

  • Check incoming mains water pressure and flow rate
  • Discuss your hot water usage patterns
  • Recommend the right cylinder size (typically 150L to 300L)
  • Provide a fixed-price, bespoke quote
2

📝 Planning & Preparation

We book your installation date and explain what to expect.

  • Typical installation takes 1-2 days
  • We'll advise if any existing pipework needs modification
  • Discuss cylinder location (airing cupboard, garage, utility room)
3

🛠️ Installation Day

Our G3 certified engineers remove your old cylinder and install the new unvented system.

  • Drain and remove existing hot water cylinder
  • Install new unvented cylinder with safety devices (expansion vessel, temperature/pressure relief valve)
  • Connect to your boiler or heat source
  • Install or upgrade controls (cylinder thermostat, zone valve)
  • Test all safety mechanisms thoroughly
4

✅ Testing & Handover

We ensure everything is working perfectly and you're comfortable with your new system.

  • Test hot water flow and temperature at all taps
  • Check safety cut-offs and pressure relief
  • Explain annual maintenance requirements
  • Provide G3 compliance certificate and warranty documents
5

🔧 Ongoing Maintenance & Servicing

Unvented cylinders require annual safety checks by a G3 qualified engineer.

  • We offer annual servicing plans
  • Check expansion vessel pressure
  • Test safety relief valves
  • Inspect for corrosion or leaks
  • Keep your warranty valid with regular servicing

Get In Touch

Free bespoke quotes, G3 certified installation, and honest advice — call or email us today

📞
Call or Text (24/7)
07476 179822
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Service Area
Coventry, Rugby, Leamington Spa, Warwick, Nuneaton, Bedworth & surrounding areas
Response Time
Emergency callouts within 24 hours — often same day
🔄 Thinking of upgrading to unvented?

Call us for a free home survey and bespoke quote

Request a Bespoke Quote

We'll respond within 2 hours during working hours