New boiler installation from qualified engineers
We install reliable, efficient boilers tailored to your home's heating needs. Expert fitting and full system setup included.
Combi Boiler Installation
Compact, efficient heating and hot water in one unit. Perfect for smaller homes and flats.
System boiler setup
Larger capacity for homes with multiple bathrooms. Separate cylinder for continuous hot water.
Heat-only boiler replacement
Traditional boilers for homes with existing cylinder tanks. Reliable, affordable heating solution.
Full installation service
Complete setup including pipework, controls, and system testing. Ready to use same day.
Energy-efficient models
Modern condensing boilers save money on fuel costs. Lower emissions, higher efficiency ratings.
Landlord certification
All installations meet safety standards and include certification. Full compliance for rental properties.
Expert boiler repairs when you need them
We diagnose and fix common boiler problems quickly, keeping your heating running reliably. Fast local service across Leicester.
No heat or hot water
We identify why your boiler isn't heating and restore comfort fast with proven repair solutions.
Boiler leaks and drips
Spot leaks early, prevent damage. We seal connections and replace worn parts to stop water loss.
Strange noises or kettling
Banging, whistling, or rumbling means trapped air or scale buildup. We flush and balance your system.
Pressure loss
Low boiler pressure cuts heat output. We find the source and re-pressurise to restore full performance.
Pilot light won't stay on
A faulty ignition or thermocouple stops your heating. We replace parts and test to confirm it holds.
Thermostat issues
Boiler won't respond to temperature changes. We repair or replace faulty thermostats for reliable control.
Annual safety checks keep your system secure
Regular gas safety inspections protect your home and family. A.O.S Heating and Gas Services provides comprehensive checks to identify and fix potential hazards before they become dangerous.
Annual safety inspections
Qualified engineer checks all gas appliances, connections, and ventilation to ensure everything meets current safety standards.
Issue detection early
We identify small problems like loose connections or worn seals before they create dangerous gas leaks or carbon monoxide risks.
Safety certificate included
Every check includes an official gas safety certificate. Landlords need this for compliance; homeowners get proof for insurance.
Peace of mind year-round
Know your heating is running safely. Regular maintenance also improves efficiency and extends the life of your boiler.
Fast Leicester appointments
A.O.S Heating and Gas Services schedules checks at times that suit you. Same-day or next-day availability in most cases.
No surprise repair costs
We explain any issues we find upfront. You choose whether to proceed. No hidden fees or pressure tactics.
Complete heating systems for your home
We install, upgrade, and maintain central heating systems that keep your home warm and efficient year-round.
System installation
New central heating systems fitted with modern controls and efficient performance throughout your property.
Radiator installation
Expert fitting of radiators in any room, ensuring balanced heat distribution and optimal comfort levels.
Pipe work and upgrades
Installation and upgrade of heating pipes using quality materials for reliability and long-term performance.
System maintenance
Regular checks and servicing to keep your heating running smoothly and catch issues before they cause problems.
Power flushing
Deep cleaning of your heating system to remove sludge and debris, restoring efficiency and extending equipment life.
Emergency repairs
Fast response to heating breakdowns. We diagnose and fix problems quickly so you're not left in the cold.
Trusted by homeowners and landlords across Leicester
Real customers share their experience with A.O.S Heating and Gas Services boiler installations, repairs, and heating maintenance.
Simon installed a new boiler for us last month. Professional, clean work, and explained everything clearly. Our heating is now reliable and efficient.
David Harrison
Homeowner, Leicester
Had an emergency boiler breakdown. A.O.S responded quickly and fixed it the same day. Fast service, fair pricing, and genuine expertise. Highly recommend.
Margaret Ellis
Landlord, Leicester
Our gas safety check was thorough and well documented. Simon took time to explain the findings and answer all our questions. Peace of mind for the year ahead.
James Watson
Homeowner, Leicester
Needed central heating repairs across our rental property. A.O.S was punctual, professional, and sorted the issue without fuss. Great local service at reasonable rates.
Patricia Morgan
Property Manager, Leicester
Our old boiler was beyond repair. Simon recommended a new installation and guided us through the process step by step. Outstanding workmanship and very fair pricing.
Robert Chapman
Homeowner, Leicester