Boiler Servicing in South Yorkshire
Annual Boiler Maintenance | Safety Checks | Local Gas Engineers
Protect your home, your heating system, and your family with a professional boiler service from Kassgas.
We offer expert boiler servicing in Sheffield, Rotherham, Barnsley, Doncaster, and Chesterfield, helping you keep your boiler safe, efficient, and working reliably – all year round.
✔️ Gas Safe Registered Engineers
✔️ Manufacturer-standard safety checks
✔️ Improves efficiency & extends boiler life
✔️ Reduces the risk of breakdowns
✔️ Keeps your boiler warranty valid
Whether it’s your annual boiler service or a one-off boiler safety check, our trusted local engineers will carry out a full inspection, performance test, and clean – all to manufacturer standards.

Annual Boiler Service
1 of 1Why Have A Service
Having your gas boiler serviced is a smart investment in safety, efficiency, and long-term cost savings. It ensures your boiler functions optimally, complies with legal requirements, and gives you the assurance that your home remains warm and safe throughout the year.
At Kassgas Ltd, we specialise in providing boiler servicing to homes across South Yorkshire, including Sheffield, Rotherham, Doncaster, and Barnsley. Our local Gas Safe engineers deliver exceptional service, ensuring your peace of mind and keeping your heating system in top condition.
Call us on 0330 058 9419 to book your boiler service or email us at office@kassgas.co.uk
We’re here to keep your home warm and safe.
A Typical Kassgas Boiler Service
- Visual Inspection: The service begins with a thorough inspection of your boiler and its components. Based in South Yorkshire, our local engineers check for signs of wear, damage, or corrosion that might affect safety or performance.
- Safety Checks: Safety is a top priority. The engineer checks for gas leaks, carbon monoxide emissions, and proper ventilation. They'll also ensure that the boiler complies with current safety regulations.
- Efficiency Assessment: The technician measures the boiler's efficiency by analyzing its combustion process. If the boiler isn't burning fuel efficiently, it can lead to higher energy bills and increased carbon emissions.
- Component Cleaning: Dust and debris can accumulate in the boiler over time, affecting its performance. During the service, the engineer will clean various components, such as the burner, heat exchanger, and flue.
- Testing Controls: All boiler controls and safety mechanisms are tested to ensure they function correctly. This includes checking thermostats, pressure relief valves, and the boiler's automatic shut-off system.
- Flue Inspection: The flue is examined to ensure it's properly installed, sealed, and venting harmful gases outside the property.
- System Pressure Check: The engineer checks the boiler's water pressure and tops it up if necessary. Low pressure can lead to heating problems.
- Lubrication: If applicable, the technician may lubricate moving parts to reduce friction and prolong the life of the boiler.
- Boiler Ignition: The boiler's ignition system is inspected and, if needed, adjusted to ensure it ignites without issues.
- Gas Tightness Test: A gas tightness test is conducted to confirm that there are no gas leaks in the boiler or its connections.
- Documentation: After the service is completed, the engineer provides a service report detailing the work performed, any issues identified, and recommendations for repairs or further maintenance.
It’s important to note that annual boiler servicing is recommended in the UK to maintain safety and efficiency. Regular servicing can also help identify potential problems before they become major issues, saving homeowners from costly repairs and ensuring the longevity of their heating system.
Gas boilers should be serviced every 12 months. This routine maintenance ensures your boiler continues to perform at its best. During a service, which typically takes about an hour, a qualified gas engineer will conduct several checks and tests to confirm everything is functioning correctly.
Failing to service a boiler annually can have serious consequences, such as voiding the warranty and allowing issues to go unnoticed. Even newly installed boilers need this yearly attention to avoid these pitfalls and to keep the system in top condition.

New Boiler Installation

Boiler Servicing

Boiler Repairs

Power Flush

Landlords / Letting Agents

Plumbing

Smart Thermostat

Cooker Installation
Our gas cooker installations start from only £60 and comply with all safety regulations. Moving house? We can remove your cooker in one property and install it in another on the same day, including weekends.

Commercial Gas Services
We provide comprehensive services including installation and maintenance of gas equipment, thorough safety inspections by Gas Safe registered engineers, and energy efficiency solutions to help you save money and reduce your environmental impact.
Reviews
Our Happy Clients!
We rang Kassgas on Wednesday afternoon. By Thursday afternoon we had a new boiler. Billy fitted our boiler, he was extremely polite and tidy he even took his shoes off each time he came into the house. Not enough words to praise him enough, he took time to explain how to work the new boiler and controls to two pensioners.
Billy and Matt were about to leave when we mentioned that our stop tap was leaking, they stayed behind and fit a new one. It was heartwarming to meet two young men who didn’t want to rip us off.
We would and already have spread the word about this company.
Neil & Sue
SueH-976
Billy and Matt just installed a new boiler. They recommended Ideal with a 12 year warranty. They turned up on time within a week of providing a very good quote. they removed the old boiler, installed the new one, flushed the radiators, added inhibitor, installed new halo wireless thermostats and checked everything was working ok in the space of 5 hours. They removed all the rubbish and left a very tidy finish.
I would definitely recommend themWould definitely recommend Kassgas if you have any heating or boiler problems.
Eric Jones
Why Choose Us
We put customer service and satisfaction above all else. Listening to your needs and doing everything in our power to ensure you are fully happy with everything we do. So if you’re looking for a plumber or heating engineer for your next project, why not give us a call.
Our excellent customer service is second to none, check out our reviews here