24/7 Service
Sublime Energy Services is available to assist you at all times, 24 hours a day and 365 days a year.
Complete Retrofit Solutions
Efficiency • Compliance • Performance
- Retrofit Assessments
- Retrofit Coordination
- Retrofit Installation
- Energy Performance Certificates
- Airtightness Testing
- Factor Temperature Calculations
2,000+
Properties Improved
About Us
West Yorkshire's Trusted Whole-House Retrofit Specialists
Sublime Energy Services provides practical retrofit and energy improvement support for homeowners, landlords, and property professionals across West Yorkshire and the UK.
Our whole-house approach helps each project move from assessment to completion with clear guidance, compliant documentation, and reliable energy performance outcomes.
- Retrofit Assessment
- Retrofit Coordination
- Retrofit Installation
- Energy Performance Certificates
- Airtightness Testing
- Factor Temperature Calculations
TrustMark Accredited
Retrofit Installation
Elmhurst Energy
Accredited Assessors
Simply Certification
Quality Assured
24/7 Support
Always available
Why Choose Sublime Energy Services?
Expert & Qualified Team
Our experienced professionals deliver high-quality retrofit solutions, improving your home's energy efficiency, comfort, and performance.
Save Time & Money
Save time and money with our professional retrofit services, helping reduce running costs and improve comfort without the hassle.
Sublime Energy Services Retrofit Solutions
Retrofit Assessment
A Retrofit Assessment is the essential first step to improving your property's energy efficiency. Our qualified assessors review your home and recommend the right measures to reduce bills and improve comfort.
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Retrofit Coordination
Our Retrofit Coordinators help manage your project from start to finish, keeping works aligned with PAS 2035 standards, planned properly, and clearly documented through to sign-off.
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Retrofit Installation
From insulation and heating upgrades to renewable improvements, our installation support helps projects meet the required standard and stay focused on quality, comfort, and compliance.
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Energy Performance Certificates (EPC)
An up-to-date EPC is required when selling, renting, or improving a property. Our qualified assessors carry out surveys and issue certificates to help you meet legal requirements.
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Airtightness Testing
Airtightness Testing measures how much heat your property loses through gaps and draughts. Our testing helps identify problem areas and prioritise the most effective improvements.
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Factor Temperature Calculations
We provide thermal bridging analysis to assess heat loss at key junctions. Using accurate calculations, we help improve energy performance and support current building compliance.
Find Out MoreDo I Need a Retrofit Assessment?
Whether you're looking to cut energy bills, improve your home's comfort, or meet new energy efficiency standards, a professional Retrofit Assessment is the essential first step. Our qualified assessors and coordinators work with homeowners, landlords, and developers across the UK to identify the right improvements for your property.
Our retrofit services may be right for you if any of the following apply:
- Your home has a low Energy Performance Certificate (EPC) rating
- You want to improve loft, wall or floor insulation
- You're a landlord needing to meet minimum EPC requirements
- You want to replace an old or inefficient boiler
- You'd like an Airtightness Test before or after works
- You're planning a home renovation or extension project
- You need a qualified Retrofit Coordinator to manage your project
- You require an up-to-date Energy Performance Certificate (EPC)
FAQ's
Sublime Energy Services provides clear pricing based on your property type, size, and assessment requirements. We confirm the cost before any work begins, so you know exactly what is included.
A Retrofit Assessment is a detailed property survey covering condition, occupancy, ventilation, heating, insulation, and energy performance. Our qualified assessors use it to recommend the right improvements for your home.
Yes. We support landlords with Retrofit Assessments, Energy Performance Certificates, and improvement planning to help properties meet current EPC standards and future energy efficiency expectations.
We offer Retrofit Assessment, Retrofit Coordination, Retrofit Installation, Energy Performance Certificates, Airtightness Testing, and factor temperature calculations, with packages tailored to each property.
Timescales depend on the size of the property and the scope of works. A standard assessment is usually completed in one visit, and our team will explain the next steps and project timeline clearly.
What Homeowners Have To Say...
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Sarah Wilson ★★★★★
Excellent company. I recently had retrofit assessment work completed by Sublime Energy Services and could not fault them. The team was friendly, professional, and clear throughout. I would highly recommend them for retrofit services.
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James Harris ★★★★★
I was cautious about starting retrofit work, but Sublime Energy Services made the process straightforward. They explained the assessment, EPC requirements, and next steps clearly, and I am really pleased with the results.
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Amelia Clarke ★★★★★
Thanks to the team at Sublime Energy Services for improving the energy performance of my home. The work was completed quicker than expected, communication was excellent, and the service exceeded my expectations.
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Louis Parker ★★★★★
Great job. I was impressed with how the team communicated and the helpful advice they provided. The retrofit guidance was practical, professional, and tailored to my property.
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Olivia Morris ★★★★★
Professionalism at its best. The Sublime Energy Services team carried out the assessment and planning with care, kept everything clear, and made the whole process feel simple.