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I’m refurbishing a residential property that’s a little over 20,000 sq ft and will have comprehensive insulation—walls, roof and floor are all wrapped, so overall fabric heat losses should be modest. Before I lock-in to an air-source heat-pump order, I need a precise heat-loss calculation that tells me the capacity I actually require rather than what a brochure suggests. Please base the figures on standard UK design temperatures and show every assumption you make (U-values, air-change rates, internal gains, etc.). I’m happy for you to use recognised tools such as Heat Engineer, MCS or similar software, as long as the final numbers can be traced back to accepted methodology. Deliverables • Whole-house heat-loss figure (kW at design temperature) • Room-by-room breakdown so I can size emitters correctly • Recommended ASHP output range with a brief rationale • Summary sheet of key assumptions and any improvement notes I’ll supply floor plans, build-up details and any other data you request as soon as we start. Accuracy is the priority; a clear, well-structured PDF and the raw spreadsheet or software export will be perfect for hand-off to my installer.
Project ID: 40559216
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Active 5 days ago
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15 freelancers are bidding on average £445 GBP for this job

As a seasoned Mechanical Design Engineer with more than 7 years of experience, I am well-equipped to handle the complexities of your ASHP heat loss assessment project. My professional expertise lies in product development, CAD modeling, and engineering analysis which will be key in accurately calculating every element of your heat loss and sizing emitters accordingly. My proficiency in using recognized tools like Heat Engineer and MCS, along with my deep understanding of UK design temperatures, U-values, air change rates, and internal gains will ensure not only an accurate deliverable but thorough documentation that is traceable back to accepted industry methodology. In addition, my skills in solid works and fusion 360 will be essential for creating the necessary technical drawings and spreadsheets for easy hand-off to your installer.
£250 GBP in 3 days
7.7
7.7

I understand the importance of precise heat-loss calculations in determining the capacity required for your air-source heat pump system. As an experienced drafter and solidworks professional, I’m well-versed in using recognized software such as Heat Engineer, MCS, and other industry-standard tools to conduct accurate heat-loss assessments. My thorough approach to projects involves documenting every assumption made during the analysis, including U-values, air-change rates, internal gains, etc., which aligns perfectly with your request for transparent and traceable methodology. Moreover, my knowledge in BIM design would enable me to provide you with a room-by-room breakdown of the heat loss figures, helping you not only size emitters correctly but also optimize your overall system's performance. I guarantee clear, well-structured PDFs along with raw spreadsheets or software exports for easy hand-off to your installer. Trust me to deliver not just outstanding accuracy but also a comprehensive summary sheet of key assumptions and improvement notes.
£253 GBP in 1 day
5.1
5.1

Hello, I have reviewed the supplied architectural drawings and understand that this is a large, multi-level property requiring a proper room-by-room heat-loss assessment, not a simple floor-area estimate. I can calculate fabric and ventilation heat losses for each space, determine the total design heat load in kW, and recommend a suitable ASHP output range based on accepted UK design methodology. Deliverables will include: • Room-by-room heat-loss calculations • Whole-building design heat loss in kW • Sensible ASHP capacity recommendation • Clearly stated U-values, temperatures, ACH and assumptions • Structured PDF engineering report • Editable calculation spreadsheet/raw data Before final calculations, I will review the wall, roof and floor build-ups, glazing/door specifications and ventilation strategy. I will keep the methodology fully traceable rather than relying on brochure-based heat-pump sizing. I am a Mechanical Engineer experienced in thermal analysis, engineering calculations and simulation. I can start immediately and deliver the complete assessment within 7 days. Regards, Mohammad Haris Mechanical Engineer | Thermal Analysis | HVAC
£475 GBP in 7 days
4.7
4.7

Hi, I understand you need an accurate, standards-based heat loss assessment for your refurbished 20,000+ sq ft property, including a room-by-room analysis, documented assumptions, and an ASHP capacity recommendation that your installer can confidently use. I’m a Mechanical Design and Simulation Engineer with 15+ years of experience in SolidWorks and Ansys, specializing in thermal analysis, CFD, fluid flow analysis, HVAC engineering, and mechanical system design. I have performed heat transfer and energy analyses for buildings and industrial systems, evaluating insulation performance, thermal loads, and equipment sizing to support efficient heating system selection. My approach will be to develop a transparent heat loss calculation using recognized UK methodologies, clearly documenting U-values, ventilation rates, design temperatures, and all assumptions so the results are fully traceable and easy to review. Have the final construction specifications and window/door schedules already been confirmed, or should the assessment account for any remaining design changes? If you’d like, I can review your drawings first and identify any information needed before starting the calculations.
£250 GBP in 2 days
4.0
4.0

I will deliver a precise heat-loss calculation for your ASHP refurbishment project, leveraging expertise in thermal analysis, HVAC, and construction engineering. Using recognized tools and solid methodology, I will provide detailed room-by-room heat loss breakdowns and a justified output range for your air-source heat pump, tailored to UK climate standards. I will include all key assumptions and improvement notes in a comprehensive PDF report, ensuring clarity for your installer and confidence in sizing your system accurately. With focus on accuracy and transparency, I aim to help you optimize your system's performance and energy efficiency.
£587 GBP in 14 days
0.0
0.0

Affordable, Early Delivery. ★★★★★★★★★★★★★★I hold a Masters degree which gives me the requisite background to handle writing from various subjects. I am a highly committed person towards my work. You can rely on QualityXenter for quality and consistency in writing. We never violate copyright rules. I have vast amount of experience in this industry since I am working from 2015 as a professional writer. I provide many modifications till to get your satisfactions. I have access to enough journals to use in your research project. I always produce quality work at VERY LOW RATES so, don't worry if you have a low budget for your work, I will be very happy to make a new client like you. I am producing quality work for my clients including ARTICLE WRITING, REPORT WRITING, ESSAY WRITING, RESEARCH PAPERS, BUSINESS PLAN, TECHNICAL WRITING, MATLAB, THESIS, ACCOUNTING & FINANCE work ETC. Go through my profile link https://www.freelancer.com/u/qualityxenter
£250 GBP in 1 day
0.0
0.0

Hi there, I’ve completed very similar projects and I have some thoughts that I'd like to run past you, does today suit you for a chat? Best regards, Christopher
£400 GBP in 3 days
0.0
0.0

I understand you need a precise heat-loss calculation for your 20,000 sq ft refurbished property to specify the correct ASHP capacity, avoiding over-specification often seen with generic tool outputs. My experience includes performing detailed thermal performance analyses for large residential projects, ensuring accurate sizing based on building fabric and environmental conditions. My approach will involve using a reputable U-value calculation tool, likely working with SAP methodology or similar recognised standards like CIBSE Guide A. I will meticulously document all assumptions, including specific U-values for walls, roof, and floor based on your insulation specifications, a realistic air change rate (e.g., 0.5 – 1.0 ACH depending on airtightness testing), and typical internal gains from occupancy and appliance use, all calibrated to UK winter design temperatures. To ensure full alignment, could you confirm if you have any specific air-tightness targets (e.g., in m³/hr/m² @ 50Pa) that I should factor into the air change rate? I'm ready to begin this analysis promptly to provide you with the definitive heat loss figures required for your ASHP selection.
£582 GBP in 21 days
0.0
0.0

Hello, My expertise in PDF handling, Mechanical Engineering, and Construction uniquely positions me to deliver precise heat-loss assessments as per your detailed requirements. I will utilize recognised tools like Heat Engineer and the latest standards to ensure traceable and accurate calculations, including assumptions like U-values, air-change rates, and internal gains. I'll compile a comprehensive report with a room-by-room breakdown, overall heat-loss figure, and optimal ASHP size with clear rationale, supported by a transparent assumptions summary. Expect a well-structured PDF and the raw data for your installer. I am prepared to start immediately upon receiving your floor plans and details. How do you prioritize accuracy and traceability in your heat-loss calculations for complex, insulated residential buildings? Thanks, Gourav
£250 GBP in 1 day
0.0
0.0

I noticed your detailed request for a precise heat-loss calculation for your residential property refurbishment project. My team specializes in providing tailored solutions for energy efficiency in buildings. We offer clean, professional services with seamless integration. We have 75+ 5-star reviews on similar projects and rank in the top 1% among 75 million users! To assist you, we will deliver a comprehensive whole-house heat-loss figure, a room-by-room breakdown, recommended ASHP output range, and a summary of key assumptions. Our goal is to ensure your heating system is optimally sized for efficiency. Can you share the floor plans and build-up details to get started? Regards, Hamza
£400 GBP in 7 days
0.0
0.0

brenchley, United Kingdom
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