From sudden boiler breakdowns to full heating system upgrades, Annex Maintenance delivers fast, professional support across London and Essex. Our Gas Safe engineers work on all major boiler brands, ensuring safe, efficient and reliable results every time.
We support landlords, letting agents and homeowners with everything from annual servicing to urgent callouts. With clear pricing, digital updates and a focus on first-time fixes, you can count on us to keep your property warm and compliant all year round.