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Home Energy Assessment
With vs. Without a Home Energy Assessment: The Difference in Energy Savings
This guide compares energy upgrades carried out with and without a Home Energy Assessment. It explains how understanding your home’s performance first can lead to smarter decisions, better comfort and more reliable energy savings, while helping you avoid unnecessary or ineffective upgrades.
Published on 27 January 2026 : Updated • 6 minute read
Without a Home Energy Assessment: educated guesses
When upgrades are carried out without a Home Energy Assessment, decisions are often based on assumptions rather than evidence. A homeowner might replace a boiler because bills are high, add insulation because a room feels cold, or upgrade windows because of draughts.
While these changes can help in some cases, they do not always address the underlying causes of energy loss. Heat may still be escaping through other parts of the home, systems may be poorly matched, and savings may not materialise as expected.
Without a whole-home view, it can be difficult to know whether money is being spent in the right places or in the right order.
With a Home Energy Assessment: informed decisions
A Home Energy Assessment takes a different approach by looking at the home as a complete system. Insulation, heating, ventilation and construction details are assessed together, rather than in isolation.
This allows the assessor to identify where energy is actually being lost and which improvements would have the greatest impact. Instead of relying on guesswork, homeowners receive guidance based on measured performance and professional analysis.
As a result, upgrades are more targeted, better sequenced and more likely to deliver lasting energy savings.
The difference in comfort and running costs
Homes that are upgraded without an assessment can still struggle with cold spots, uneven temperatures or unexpectedly high energy use, even after money has been spent.
With a Home Energy Assessment, comfort improvements are usually more noticeable. By addressing the causes of heat loss first, homes tend to retain warmth more effectively and require less energy to stay comfortable.
Over time, this often leads to more stable and predictable running costs, rather than short-term improvements followed by frustration.
Planning upgrades with confidence
Another key difference is how upgrades are planned. Without an assessment, improvements are often reactive and piecemeal. With an assessment, homeowners receive a clear upgrade pathway tailored to their home.
This makes it easier to plan work in stages, manage budgets, and avoid repeating or undoing previous upgrades. It also helps ensure that any work carried out supports future improvements, rather than limiting them.
Clear guidance on grants and supports
A Home Energy Assessment also helps clarify which SEAI grants may apply to your home. Grant eligibility depends on the property and the measures recommended, and this is not always obvious without professional guidance.
As part of the assessment process, grant options are explained carefully and correctly, helping homeowners understand what support may be available before committing to work.
This avoids assumptions and reduces the risk of disappointment later.
What happens next?
If you are considering ways to reduce energy use, improve comfort or plan upgrades, a Home Energy Assessment is a sensible place to start.
You can book your assessment online or by phone. A qualified assessor will visit your home, complete the survey and BER, and prepare a clear, easy-to-understand report. Once you receive it, you can review the findings in your own time and decide what — if anything — you would like to do next. There is no obligation to proceed beyond the assessment.
Churchfield Home Services carries out Home Energy Assessments across Dublin, Mayo, Galway, Sligo, Roscommon, Kildare, Meath and Wicklow. As a Registered SEAI One Stop Shop.
We provide clear guidance from assessment through to upgrade, supporting you at every stage if you choose to move forward.
To get started, visit our website to book your Home Energy Assessment online, or call 0818 011 022 to speak with our team.
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Author
Mary Hilda Hurley, Retrofit Expert
Published on 27 January 2026: Updated • 6 minute read
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