How do I keep my boiler warranty valid?

Protecting Your Boiler Warranty

Modern boilers come with warranties from 2-12 years, but most homeowners don't realise these can be voided if certain conditions aren't met.

Warranty Requirements

Annual Servicing

• Must be serviced every 12 months by a Gas Safe engineer
• Service must include all manufacturer-specified checks
• Records must be kept (we provide digital certificates)
• Some manufacturers require their own service record book to be filled in

Registration

• Most warranties require registration within 30 days of installation
• Your installer should do this, but check it's done
• Extended warranties may require additional registration

Warranty Periods by Manufacturer

• Worcester Bosch: Up to 12 years
• Vaillant: Up to 10 years
• Baxi: Up to 10 years
• Ideal: Up to 12 years
• Viessmann: Up to 12 years

What Voids a Warranty

• Missed annual service - Even one missed year
• Non-Gas Safe work - Any work by unregistered engineers
• Non-manufacturer parts - Some warranties require genuine parts
• Water quality issues - No inhibitor or magnetic filter
• Incorrect installation - Problems caused by original install

What's Typically Covered

• Manufacturing defects
• Component failures (heat exchanger, PCB, pump)
• Parts and labour for warranty repairs

What's NOT Covered

• Limescale damage
• Sludge-related problems
• Frozen condensate pipes
• External factors (power surges, water quality)
• Annual servicing costs

Tips to Protect Your Warranty

1. Set a calendar reminder for annual service
2. Keep all service records and invoices
3. Use Gas Safe registered engineers only
4. Install a magnetic filter and system inhibitor
5. Address any issues promptly (don't ignore warning signs)

NK Gas Services provides warranty-compliant boiler servicing from £90. Call 07404 922458 to book your annual service.