Dawson Mechanical and Renewables

Boiler Replacement & Installation

Upgrade or replace your boiler with confidence. Our certified registered gas engineers(RGI) install high performance gas and oil boilers, ensuring reliable heating, lower energy costs and full compliance with safety standards across Dublin & Meath.

Expert Boiler Replacement & Installation for Homes and Businesses

Dawson Mechanical and Renewables provide expert boiler replacement services throughout Dublin and Meath for both gas and oil heating systems. Whether your boiler has broken down, is nearing the end of its lifespan, or you want to upgrade to a more efficient model, our experienced heating engineers deliver fast, reliable boiler installation services for residential and commercial properties.

We install all major boiler brands and can often complete replacements within one day, minimising disruption to your home or business. For properties considering renewable heating, we also provide advice on transitioning to heat pump systems as an alternative to conventional boiler replacement. 

Gas & Oil Boiler Replacement & Installation

We install new gas & oil boilers and replace old systems with the latest energy efficient models. Modern condensing gas boilers are designed to save energy, reduce heating costs, and provide reliable hot water and heating for your property. We work exclusively with the industry leading  Viessmann boilers when replacing or installing new boliers.

Some Recent Boiler Replacement Projects

Here are a few of our most recent Gas & Oil Boilers we’ve installed with the attention to detail and quality our customers have some to expect from our team at Dawson Mechanical and Renewables.

Why Replace Your Boiler?

Replacing an old or inefficient boiler can

Our team provides expert guidance on boiler selection, replacement planning, and professional installation to deliver peace of mind and maximum efficiency.

Why Choose Us for Boiler Installation and Replacement?

Replacing an old or inefficient boiler can

Our team provides expert guidance on boiler selection, replacement planning, and professional installation to deliver peace of mind and maximum efficiency.

Frequently Asked Questions

Choosing a new boiler or replacing an old system can raise a few important questions. Below are answers to the most commonly asked questions about gas and oil boiler installation, replacement, and maintenance. This guide will help you understand your options and make an informed choice for your property.

If your current boiler is over 10–15 years old, frequently breaks down, makes unusual noises, or struggles to heat your home or supply hot water, it may be time to replace it. Upgrading to a modern gas or oil condensing boiler can improve efficiency, reduce energy bills, and provide more reliable heating.

The best boiler depends on your home size, hot water demand, and existing heating system. Common options include combi boilers, system boilers, and conventional boilers. Dawson mechanical and renewables heating and plumbing experts can recommend the right size and model for efficiency and performance.

Gas boilers are connected to the natural gas network and are generally more cost-effective and easier to install if mains gas is available. Oil boilers are used in homes without gas supply and rely on stored heating oil. Modern oil boilers are highly efficient and ideal for rural properties or off-gas locations.

Not always as radiators only need replacement if they are damaged, incompatible with the new system, or affecting efficiency. A heating assessment will determine if upgrades are necessary, it’s more the exception than the rule in most cases.

A standard boiler replacement usually takes 1–2 days, depending on the complexity of the system and any additional pipework or controls required. Larger or more complex systems may take longer, but we provide a clear schedule before starting work.

In Ireland, it is a legal requirement all work carried out on domestic natural gas installations, including the installation, replacement or servicing of gas boilers, must be performed by a Registered Gas Installer (RGI)

Modern condensing boilers are much more efficient than older models, often saving up to 30% on heating bills. We can also recommend controls, thermostats, and system upgrades to maximise energy efficiency and comfort.

Yes, regular servicing of your boiler is essential for safe and efficient operation. We offer maintenance packages for both gas and oil boilers, including annual safety checks, cleaning and system optimisation.

Boiler replacement costs vary depending on the boiler type, size, brand, and installation complexity. The total price typically includes the new unit, labour, removal of the old boiler and system upgrades if required. A professional inspection is needed for an accurate quote.

Our Qualifications

We strictly adhere to the highest industry standards and comply with all health and safety regulations to ensure every job is carried out safely, legally, and to the highest quality. Our commitment to continuous training and certification means you can trust us to deliver expert plumbing and heating solutions and services including RGI and the national guild or master craftsmen.

Get a Quote for Your New or Replacement Boiler

If you are looking to install a new boiler or replace your existing gas or oil boiler, contact us today. We’ll assess your property, recommend the best solution, and provide a professional, safe and energy efficient installation.