Building Performance Knowledge Hub

Our knowledge hub is a free resource to help understand building performance measurement, building physics and home energy efficiency. The case studies and technical reports explore real-world use cases of air tightness testing, building performance evaluation and post-occupancy evaluation.

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Case StudiesView case studies on using our products in the real world.

Technical GuidesRead our technical guides relating to building performance and energy efficiency.

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Checking air leakage paths using Leak Checker under PAS 2035

Technical Guide

PAS 2035 - Checking for Air Leakage Points

Overview of using Leak Checker diagnostics fan to identify key air leakage locations, a requirement under PAS 2035.

Richard England

9 Feb 2022

Illustration of heat loss paths in a house

Technical Guide

The Relationship between Thermal Performance and Space Heat Demand

The thermal performance of a building is directly related to the amount of energy required to heat or cool it for the given internal and external conditions.

Dr Richard Jack

23 Dec 2021

Drilling bore hole for ground source heat pump

Case Study

Ground Source Heat Pump Sizing Using SmartHTC

Accurately sizing a heat pump is important to achieving an efficient system. This case study analyses how SmartHTC was used to measure the actual thermal performance of the dwelling rather than relying solely on design calculations.

Dr Zachary Gill

20 Oct 2021

Case Study

Lancaster West Estate Major Retrofit Assessment

Build Test Solutions are providing performance measurements to inform design, provide quality assurance, and deliver key learning and feedback for a major retrofit of the Lancaster West Estate in Central London.

Dr Richard Jack

15 Jul 2021

Crossway Passivhaus certified timbrel vaulted parabolic arch

Case Study

Crossway Performance Monitoring

Constructed in 2008 and featured on Grand Designs, Crossway was one of the first Passivhaus certified buildings in the UK. This case study shows how SmartHTC proved that Crossway has excellent thermal performance.

Dr Richard Jack

10 Apr 2021

AirEx Floorvent smart airbrick compared to passive airbrick

Case Study

AirEx Smart Airbrick Impact Validation

AirEx Floorvent is a smart airbrick that claims to deliver significant heat loss reductions through floors. This project analyses how SmartHTC and U-value measurements were used to validate its performance across 115 properties.

Dr Richard Jack

15 Dec 2020

Technical Guide

Heat Loss Parameter: A Metric for Total Fabric Performance

Build Test Solutions provides an overview of the Heat Loss Parameter and introduces a simple guide against which the performance of buildings can be measured.

Dr Richard Jack

17 Aug 2020

Case Study

Pulse air leakage testing in very air tight Passivhaus properties

BTS has published the results from using Pulse to test the air leakage of very air-tight dwellings, such as Passivhaus new builds and EnerPHit retrofits.

Luke Smith

29 Jan 2020

Showing 13 to 20 of 20 results

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