Heat Loss Survey 

At Dartmoor Energy, we specialise in providing professional heat loss calculations and surveys for homeowners and property developers across Devon, Cornwall, and the South West. Our team can provide remote heat loss calculations across the whole of the UK - scaled architect drawings will be required for this service. Our expert team uses state-of-the-art software to deliver precise calculations, helping you optimise your home's heating system and energy efficiency. Whether you’re retrofitting an older property or designing a new build, understanding your home’s heat loss is essential for creating a comfortable, energy-efficient living environment.

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What is a Heat Loss Calculation?

A heat loss calculation measures the amount of heat escaping from a building through various elements such as walls, windows, floors, and roofs. This process is crucial for determining the heating requirements of each room and ensuring your home remains warm and energy-efficient, without wasting energy or money.

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Our heat loss surveys provide a detailed assessment of your property’s thermal performance by:

• Analysing the building’s materials, insulation, and construction.

• Measuring the U-values and R-values (insulation properties) of different building components.

• Identifying areas where heat is being lost, such as poorly insulated walls, windows, or floors.

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Why You Need a Heat Loss Calculation

Having a heat loss calculation done for your property offers several important benefits:

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1. Correct Sizing of Heating Systems

One of the main reasons to conduct a heat loss calculation is to accurately size your heating system. Whether you’re installing a new boiler, heat pump, or upgrading your radiators, understanding how much heat is being lost will help you determine the right system size. Oversized systems can lead to wasted energy and higher costs, while undersized systems may struggle to keep your home warm.

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2. Optimised Radiator and Underfloor Heating Sizing

For efficient heating, each room needs to be equipped with appropriately sized radiators or underfloor heating systems. By performing a heat loss survey, we can calculate the heat demand of every individual room. This allows us to recommend the optimal size and placement of radiators or underfloor heating to keep each space comfortable.

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3. Identifying High Heat Loss Areas

Our surveys help pinpoint high heat loss areas in your home, such as poorly insulated walls, windows, or doors. Once identified, these areas can be addressed with targeted solutions like insulation upgrades or window replacements, ensuring that your home retains more heat and becomes more energy-efficient.

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4. Reduce Energy Bills

By understanding where your property loses heat, you can make informed decisions on how to improve its thermal performance. Better insulation, energy-efficient windows, and correctly sized heating systems can drastically reduce energy consumption, lowering your heating bills and carbon footprint.

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5. Comply with Building Regulations

If you're constructing a new property or carrying out major renovations, having an accurate heat loss calculation is essential for meeting Building Regulations, particularly Part L, which deals with energy efficiency. Our calculations support you in ensuring that your property is compliant, helping you avoid costly delays and redesigns.

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6. Supporting Retrofit Projects

If you’re considering a retrofit, a heat loss survey is a crucial first step. Understanding the current energy performance of your home will help you make the right choices about which retrofit measures—such as insulation, window upgrades, or heating system improvements—will provide the best results.

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Our Heat Loss Calculation Process

At Dartmoor Energy, we follow a detailed process to ensure accurate and actionable results:

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1. Property Survey

Our expert surveyors begin by assessing your property’s construction, measuring key areas such as:

• External and internal wall areas

• Roof and floor areas

• Window and door sizes

• Building materials and insulation levels

We take a room-by-room approach to ensure every space is carefully evaluated, providing precise data for each area of the home.

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2. U-Value and R-Value Assessment

Using this data, we calculate the U-values (rate of heat transfer) for each element of your building. This helps us understand how much heat is escaping and where improvements can be made.

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3. Heating System and Radiator Sizing

Based on the heat loss results, we recommend the correct size for your heating system and individual radiators or underfloor heating in each room. This ensures you are not over- or under-sizing your heating equipment, leading to maximum efficiency and comfort.

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4. Insulation and Energy Efficiency Recommendations*

We identify any high heat loss areas and suggest targeted insulation improvements. Whether it’s upgrading wall insulation, improving window glazing, or enhancing roof insulation, we offer solutions that will have the most significant impact on your home’s energy efficiency.

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5. Comprehensive Report*

We provide a detailed report outlining all findings, including heat loss data for each room, heating system recommendations, and insulation suggestions. This report gives you all the information needed to make informed decisions about improving your property’s energy performance.

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*Optional extras. 

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Why Choose Dartmoor Energy for Heat Loss Calculations?

1. Expert Knowledge: With years of experience in the heating industry, our team understands the unique challenges of all building materials and climates. We use this knowledge to provide precise, reliable calculations for properties of all ages and styles.

2. Tailored Solutions: We offer personalised heat loss calculations that are specific to your home’s layout, construction, and energy goals, ensuring the best outcomes for your project.

3. Full-Service Approach: Beyond heat loss calculations, Dartmoor Energy provides a full range of retrofit and energy efficiency services, including insulation upgrades, heating system installation, and renewable energy options such as solar PV and heat pumps.

4. Local Experts: Covering Devon, Cornwall, and the South West, we are proud to serve local homeowners, offering in-depth knowledge of the regional housing stock and the best energy-saving measures for your property.

5. Remote Calculations: Using state-of-the-art software and scaled PDF drawings, we can complete heat loss calculations remotely for properties anywhere in the UK.

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Ready to Improve Your Home’s Energy Efficiency?

If you’re planning a new heating system, undertaking a retrofit, or simply want to reduce your energy bills, contact Dartmoor Energy today to book a heat loss calculation and survey. Our team will provide expert advice, personalised recommendations, and ongoing support to ensure your home stays warm and efficient year-round.

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