Unvented Cylinder Servicing in Gravesend - Annual Safety Maintenance

Unvented Cylinder Servicing in Gravesend

Annual servicing of your unvented hot water cylinder is essential for safety. These systems operate under pressure and have safety devices that need regular testing by a qualified engineer.

Why Service Your Unvented Cylinder?

Unlike regular cylinders, unvented systems have multiple safety components:

• Expansion vessel - Must maintain correct pressure
• Temperature/pressure relief valve - Needs annual testing
• Tundish and discharge pipe - Must be clear and correctly installed
• Thermostats - Prevent dangerous overheating
• Anode (if fitted) - Protects against corrosion

Without regular servicing, these can fail when you need them most.

What My Service Includes

Every unvented cylinder service covers:

1. Visual inspection of cylinder and connections
2. Expansion vessel pressure check - Re-pressurising if needed
3. Relief valve operation test - Ensuring correct function
4. Tundish inspection - Checking for discharge signs
5. Temperature control testing - Thermostats and cut-offs
6. Anode inspection (where fitted) - Corrosion protection
7. Immersion heater check - Condition and operation
8. Service documentation - For warranty records

Gravesend-Specific Considerations

The hard water in this area means extra attention is needed:

• Limescale build-up - I check elements for scale damage
• Expansion vessel wear - Hard water causes more cycling
• Relief valve scaling - Can affect operation
• Element condition - Scale causes premature failure

Common Issues Found During Servicing

Problems I regularly catch before they become emergencies:

• Low expansion vessel pressure (most common)
• Beginning relief valve failure
• Scaled immersion elements
• Corroded anodes needing replacement
• Thermostat drift

Areas I Service

All Gravesend and surrounding postcodes:

• DA11 - Gravesend town, Northfleet borders
• DA12 - Shorne, Cobham, Singlewell, Riverview Park
• DA13 - Rural areas, Meopham borders

Book Your Service

Annual servicing keeps you safe and maintains your warranty. Being based in nearby Greenhithe means convenient appointments throughout Gravesend.

Call 01322 788418 to book your unvented cylinder service.

Unvented Cylinder Servicing in Kent

Unvented hot water cylinders need annual servicing – it’s a manufacturer requirement and essential for safety. As a G3 qualified engineer, I can service all types of unvented cylinders.

What’s Included in a Service

A proper unvented cylinder service covers all the critical safety components:

Temperature and pressure relief valve – This is your cylinder’s main safety device. I’ll test it to ensure it opens at the correct pressure and temperature, and check for any signs of limescale or corrosion.

Expansion vessel – Unvented systems include an expansion vessel to handle thermal expansion. I’ll check the pre-charge pressure and inspect for any signs of failure.

Pressure reducing valve – This controls the incoming water pressure. I’ll test it’s working correctly and check for any debris buildup.

Tundish and discharge pipework – I’ll check these are clear and correctly installed to safely discharge any water if a safety valve operates.

Anode rod (if fitted) – Some cylinders have a sacrificial anode to prevent corrosion. I’ll check its condition and recommend replacement if needed.

General inspection – I’ll look for any signs of leaks, corrosion, or damage to the cylinder and pipework.

Why Annual Servicing Matters

Safety first. The safety devices on an unvented cylinder exist for a good reason – to prevent dangerous pressure buildup. Regular testing ensures they’ll work when needed.

Maintain your warranty. Most manufacturers require annual servicing by a G3 qualified engineer. No service record = no warranty claim if something goes wrong.

Prevent breakdowns. Small issues caught during a service are much cheaper to fix than emergency callouts.

Extend cylinder life. A well-maintained unvented cylinder can last 15-20 years. Neglected ones fail much sooner.

Landlord Requirements

If you’re a landlord with unvented cylinders in your property, annual servicing is strongly recommended as part of your duty of care to tenants. While not a legal requirement like the gas safety check, it demonstrates due diligence.

Fair, Fixed Pricing

I charge a fair, fixed price for unvented cylinder servicing. You’ll know the cost upfront – no surprises.

Book Your Unvented Cylinder Service

Keep your unvented system safe and reliable. Book online at booking.thamesboilers.co.uk or call me on 01322 788418.