Baxi Boiler Warranty: What You Need to Know

Understanding your Baxi boiler warranty is crucial for UK homeowners and landlords investing in reliable central heating solutions. Baxi, a trusted British manufacturer with over 150 years of experience, offers parts and labour coverage on its condensing combi, system, and regular boilers, providing protection against manufacturing defects in key components like the stainless steel heat exchanger and pump. 

Warranties range from 2 to 10 years depending on the model, with extended periods available on premium ranges when specific conditions are met, ensuring long-term peace of mind for efficient home heating.

If you’re installing a new Baxi boiler or want added security for your existing one, Boilers 2 Go provides comprehensive boiler cover plans and annual service plans to protect against breakdowns and keep your system compliant.

Baxi Boiler Warranty: At a Glance

Baxi boilers come with model-specific warranties, all requiring registration within 30 days, a completed Benchmark commissioning checklist, and annual Gas Safe servicing to maintain full validity. Premium models often need additional measures like a fitted magnetic filter.

Model Range	Standard Warranty	Promotional/Extended Warranty	Key Conditions for Maximum Coverage	Best Suited For
Baxi 800 Combi/System	2 years	Up to 10 years	Registration, Benchmark, annual service, magnetic filter fitted & maintained	Larger homes, high demand
Baxi 600 Combi/System	2 years	Up to 7 years	Registration, Benchmark, annual service	Medium homes, reliable performance
Baxi 400 Combi/Heat	2 years	Up to 5 years	Registration, Benchmark, annual service	Smaller properties, value-focused
Baxi 200 Combi	2 years	2 years	Registration, Benchmark, annual service	Budget-conscious flats/homes

These terms reflect current 2026 offerings; always verify on the official Baxi website for your specific model.

What Are the Key Terms and Conditions for a Baxi Boiler Warranty?

The key terms and conditions for a Baxi boiler warranty include mandatory registration within 30 days of installation via the My Baxi portal, completion of the Benchmark checklist by a Gas Safe installer, and proof of annual servicing by a qualified engineer. Failure to meet any of these reduces coverage to just one year (or two years in some cases), even on premium models.

For the 10-year warranty on Baxi 800 ranges, a magnetic filter must be installed at setup and maintained throughout the period to prevent sludge and limescale issues—otherwise, it reverts to two years. Coverage applies to parts and labour for manufacturing faults, excluding misuse, poor water quality without treatment, or unauthorised repairs.

How Do You Register a Baxi Boiler Warranty?

You register a Baxi boiler warranty online through the official My Baxi portal or Baxi Works site within 30 days of installation to activate the full promotional period. Provide your boiler’s serial number, installation date, and installer details, then keep the confirmation email and Benchmark checklist as proof.

This simple step unlocks extended coverage and allows you to check warranty status anytime, helping landlords demonstrate compliance during property inspections.

What Does a Baxi Boiler Warranty Cover?

A Baxi boiler warranty covers parts and labour for manufacturing defects on components such as the heat exchanger, diverter valve, printed circuit board, and pump during the valid period. It provides free repairs or replacements when faults arise from factory issues, not wear and tear, accidental damage, or lack of maintenance.

Homeowners benefit from reduced out-of-pocket costs on major fixes, while landlords minimise tenant disruptions and maintain gas safety standards.

How Can You Keep Your Baxi Boiler Warranty Valid?

You can keep your Baxi boiler warranty valid by arranging an annual service with a Gas Safe registered engineer, who will inspect the system, clean the magnetic filter (if fitted), check for sludge, and confirm water quality. Retain all service certificates, avoid DIY modifications, and use approved parts for any repairs.

Regular maintenance also boosts efficiency, lowers energy bills, and extends the boiler’s overall lifespan beyond the warranty period.

Protect Your Baxi Boiler with Cover and Service Plans from Boilers 2 Go

For complete reassurance beyond manufacturer coverage—or if your warranty has expired—Boilers 2 Go offers flexible boiler cover plans and dedicated service plans tailored to Baxi boilers. These include priority breakdowns, unlimited call-outs, parts and labour repairs, and annual Gas Safe servicing to prevent issues and maintain efficiency.

FAQs

Can a Baxi warranty be transferred if I sell my home?

Yes, most Baxi warranties are transferable to the new owner provided the registration is updated and proof of continued annual servicing is available—notify Baxi to ensure seamless handover.

What happens if a fault occurs shortly after the warranty expires?

Post-expiry faults become chargeable repairs, but purchasing a Baxi maintenance plan or third-party cover beforehand can extend protection and include priority support.

Does hard water affect Baxi warranty claims?

Hard water-related damage from limescale may not be covered if preventive measures like scale reducers or magnetic filters weren’t used, as manufacturers view this as lack of proper maintenance.

Are Baxi extended warranties available after initial installation?

Baxi offers purchasable extended warranties in some cases up to 60 days post-installation via their site, though availability varies—check directly or consider alternative cover plans.

How does the Benchmark checklist impact a Baxi warranty?

The Benchmark commissioning checklist, completed by your installer, proves correct setup and is required alongside registration and servicing to validate the full warranty term.