SmartHTC energy modelling software

Real-world thermal performance measurement

The thermal performance test uses real measurements of internal temperature and energy consumption. Readings can come from existing smart home systems or from discreet sensors placed around the house.

Web Interface

Data can be uploaded via a user friendly and secure web-based interface.

API Integration

A RESTful API is accessible to integrate SmartHTC into your own products.

Accurate to ±15%

Results accurate to ±15% when compared to a traditional co-heating tests.

Secure Cloud Storage

Data is stored securely with access controlled by user management.

Data Analytics

Comprehensive charting of measurement to help understand results.

Printable Reports

Reports can be generated online to be printed or saved to PDF.

Compatible with sensors and smart technologies from:

SmartHTC input information and measurement data

The more information that is provided, the more accurate the heat loss calculation will be and the lower the confidence interval.

Required building information:
  • Location (postcode or latitude and longitude)
  • Floor area
Optional building information:
  • Built form
  • Attachment
  • Party wall area
  • Boiler winter seasonal efficiency
  • Window dimensions and orientation
  • Glazing type, overshading and frame type
  • Number of occupants
Required measurement data:
  • Internal temperature readings from a single location
  • Energy consumption at service meter (smart meter data or manual meter readings)
Optional measurement data:
  • Internal temperature in up to 10 locations
  • Internal relative humidity in up to 10 locations
  • Half hourly smart meter data
  • Disaggregated heat input for space heating
  • Disaggregated heat input for water heating
  • Local external temperature
  • Local global solar irradiance
  • Metabolic gains
  • Onsite electricity generation
  • Electric vehicle charging
  • Heat pump output

SmartHTC building performance insights

Once a SmartHTC calculation has been performed, various metrics relating to the energy performance and total fabric heat loss of the building will be displayed.

Heat Transfer Coefficient, HTC (W/K)
This is the measured HTC value for the monitored period, the lower the number the better. It is specific to building and conditions at the time. If you make energy efficiency improvements, you should see a decrease in the HTC.
Confidence Interval, CI (W/K)
The confidence interval is a measure of uncertainty that the HTC is presented to. The more data that is supplied, the higher the accuracy of the HTC and the lower the confidence interval will be.
Heat Loss Parameter, HLP (W/m²K)
The Heat Loss Parameter (HLP) is a normalised value that enables different buildings to be compared. The HLP gives a measure the thermal performance per usable space, but it is related to the built form as well as the actual performance of the fabric.
HLP Rating
The HLP rating is an indication of the thermal performance of the building based on a scale from Excellent to Poor.
Mean Temperatures
The mean internal temperature, external temperature and temperature difference that were used in the calculation result.
Peak Heat Demand (kWp)
This is is the maximum heating power requirement for your home on the coldest predicted winter day at your home's location, it is used to determine the required size of heating system (e.g. heat pump) for your home.

SmartHTC Downloads

PDF Document

SmartHTC Brochure

Summary of key features, applications and technical specifications.

PDF Document

SmartHTC Validation Report

This validation report details how SmartHTC tested including 41 direct comparisons with a baseline measurement by a co-heating test, and more than 300 SmartHTC measurements in total.