If you’re planning a retrofit, new build, or want to improve energy performance, Smart HTC gives you accurate, real-world insight into how well your property retains heat. Trusted by homeowners and developers across the UK.
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Smart HTC (Heat Transfer Coefficient) is an advanced testing method that measures the actual rate at which your home loses heat to the outside environment.
Unlike SAP calculations or design-stage estimates which rely on theoretical maths, Smart HTC uses physical sensors and real temperature data over a monitored period to show how energy-efficient your property really is. It factors in absolutely everything: physical materials, actual construction quality, hidden thermal bridges, air leakage, and even prevailing weather conditions. The result is a true, undeniable picture of your building's energy performance.
Moving away from guesswork. Smart HTC provides the verifiable metrics you need to secure funding, improve EPCs, and validate expensive construction work.
Gives you empirical, real-world data rather than relying entirely on theoretical estimates and "assumed" U-values from a desk-based SAP assessment.
Helps verify that the insulation and airtightness measures you paid for were actually installed correctly and are performing to standard.
Highly useful for rigorous PAS 2035 retrofit assessments, unlocking access to vital government eco-funding and grant applications.
Identifies hidden heat loss issues completely missed in standard reports, supporting better energy upgrade decisions and saving you money.
For decades, the UK construction industry has relied on "The Performance Gap" – the massive difference between how a building is *supposed* to perform on paper (SAP), and how much heat it actually loses in the real world.
If you are undertaking a deep retrofit in London, Manchester, or Liverpool, you must understand the difference between theoretical models and real-world physics.
Calculates heat loss by measuring the dimensions of your walls and assuming the insulation inside is perfect. It uses standardized weather models and generic default penalties for old brickwork.
Calculates heat loss by monitoring the actual temperature inside vs. outside over several weeks, factoring in the real wind, rain, and exact physical condition of your specific property's masonry and insulation.
If you are a Retrofit Coordinator working under the stringent PAS 2035 framework, Smart HTC is rapidly becoming the gold standard for Post-Occupancy Evaluation (POE). It provides the undeniable, empirical evidence required by funding bodies (like ECO4) that the implemented retrofit measures genuinely reduced the dwelling's carbon footprint.
We take the hassle out of technical compliance. Our methodology is completely non-intrusive and requires zero structural interference with your property:
We place small, discreet temperature sensors around your property (and one outside). There are no wires, no drilling, and no mess.
You live in the house exactly as you normally would. You use the heating, open the doors, and cook as usual for a period of roughly 3 weeks.
Our advanced software strips out the "noise" (like heat from your oven or the sun) to isolate the exact thermal leakiness of the building's fabric.
We present a clear, easy-to-understand HTC figure (in W/K). We map this against your SAP expectations to see if your builders actually delivered what was promised.
We provide professional, data-driven Smart HTC testing for projects across the UK.
Our testing methodologies align perfectly with TrustMark standards and PAS 2035 guidelines, making our reports universally accepted for carbon assessments and funding applications.
Stop guessing. By knowing exactly how much heat your property loses, we ensure you don't overspend on oversized heat pumps or redundant wall insulation.
Whether your retrofit project is in London, Manchester, Birmingham, or Liverpool, our engineers deploy advanced sensors seamlessly and provide clear, jargon-free support.
Everything you need to know about preparing for your real-world heat loss assessment.
Stop relying on theoretical guesswork. Get in touch with Armeec today for precise, data-driven Smart HTC testing across the UK.