
Boiler Installations in Cirencester
If you’re planning a new boiler installation, BJS Heating & Fires provides a complete in-house service from start to finish. We install modern, energy-efficient systems designed to improve performance, reduce running costs, and deliver reliable heating and hot water tailored to your home.
BJS Heating and Fires
New Boilers Designed Around Your Wiltshire Home
Choosing the right boiler is about more than just replacing an old unit. It’s about making sure your entire heating system works efficiently for your property, your usage, and your future needs. Our experienced team takes the time to understand your setup and recommend the most suitable solution based on factors such as property size, water demand, and existing pipework.
As trusted Gas Safe engineers, we install a comprehensive range of systems, including combi boilers, gas boilers, and other configurations suited to both smaller homes and larger properties. Every new boiler is selected with performance, efficiency, and long-term reliability in mind.
And that’s not all. BJS isn’t only around to install a new boiler or carry out a boiler replacement. We’re with you year-round for servicing, repairs, and ongoing maintenance. That’s the level of commitment you can expect from our dedicated team.

Common Types of Boilers Explained
When planning a boiler installation, it’s important to understand the various systems available. A popular choice for many homes, combi boilers provide hot water on demand without a separate tank, making them ideal for smaller properties such as flats and terraced properties.
System boilers store hot water in a cylinder, offering better performance for homes with higher demand, while conventional boilers are suited to larger properties with traditional heating setups. Our team can guide you through the options and recommend the most suitable solution based on your home and usage.
A Complete Start-to-Finish Installation Service
We provide a fully managed boiler installation service, ensuring everything is handled by our in-house team. From your initial enquiry through to final testing, you can expect a smooth and well-organised process.
- Removal of your existing boiler where required.
- Installation of your new boiler and associated components.
- Upgrades to pipework, controls, or radiators if needed.
- Full system flushing and preparation.
- Testing, commissioning, and safety checks.
Our goal is to make your boiler upgrade as straightforward as possible, with minimal disruption and a clean, tidy finish once the work is complete.


Boiler Replacements & Upgrades Made Simple
If your current system is struggling to keep up, a boiler replacement or upgrade can make a noticeable difference. Older boilers tend to lose efficiency over time, leading to higher energy bills and less reliable performance.
Upgrading to a new boiler allows you to benefit from improved efficiency, better temperature control, and quieter operation. Whether you’re replacing a worn-out unit or upgrading to meet modern standards, we’ll guide you through the options and ensure your new system is perfectly suited to your home in Swindon, Cirencester, or Marlborough.
BJS Heating & Fires works with a range of well-established manufacturers to ensure every boiler installation meets high standards of quality and reliability. Our team regularly installs systems from brands including Alpha, Baxi, Glow-worm, Vaillant, Viessmann, and Worcester Bosch.
By working with trusted industry names, we’re able to offer dependable solutions for everything from straightforward boiler replacement projects to full system upgrades. We’ll always recommend the right product for your requirements, rather than a one-size-fits-all approach.
Boiler Installations for Domestic & Commercial Properties
We carry out installations for both domestic and commercial properties across Swindon, Cirencester, Marlborough, and the surrounding areas. While most of our work focuses on homes, we also support landlords and small commercial premises requiring reliable heating solutions.
Our experience across different property types allows us to adapt each new boiler system to the building’s demands, ensuring safe and efficient operation in every environment.


FAQs – Boiler Installations
There are a few warning signs that suggest your current system may be reaching the end of its lifespan. If your heating feels inconsistent, hot water supply becomes unreliable, or you’re calling out engineers more frequently than you’d like, it’s often more practical to look at a boiler replacement. Older systems can also become less efficient over time (particularly if they’re over a decade old), which may lead to higher running costs compared to installing a modern, more reliable alternative.
The right system depends on your property and how you use hot water. A combi boiler is ideal for smaller homes with limited space, while larger properties may benefit from system or conventional boilers. Our Gas Safe engineers will assess your setup and recommend the most suitable option for your needs.
Most installations can be completed within one to two days, depending on the complexity of the job. A straightforward boiler replacement is usually quicker, while a full boiler upgrade involving system changes may take longer. We’ll always provide a clear timeframe before work begins.
Modern boilers are built to operate much more efficiently than older systems, using less fuel to deliver the same level of heat. Upgrading to a newer model can improve overall heating performance while reducing wasted energy, often leading to more consistent temperatures and lower day-to-day running costs, particularly if your current setup is no longer performing as it should.

Make a Date With a New Boiler
If you’re considering a new boiler installation or replacing an old one, our team is here to help. Call BJS Heating & Fires today on 01793 432100 to discuss your requirements or fill in our online form. We cover Swindon, Cirencester, Marlborough, and the surrounding areas throughout Wiltshire.