Case Study

Drewlo Holdings - Multi-Unit Residential Building

Ontario. Canada

$4,532 (CAD)



The performance of EndoTherm was piloted by Drewlo at 310 Dundas a multi-unit residential building (MURB) in London, Ontario Canada.

EndoTherm was installed on the 2nd November 2020 with no interruption to the heating system operation and therefore the tenants did not experience any interruption in their units.

An initial baseline was created using historical consumption provided by Drewlo. Data between March 2017 and October 2020 was normalised using Heating Degree Days (HDD) from London Airport (CYXU) at a baseload of 18.5°C.

The regression showed a strong R2 (0.9694) but two outliers. These were later identified as estimated bills and therefore removed from the analysis. The baseline also showed a slight decrease in consumption from March 2020 which is surprising as COVID-19 caused increased occupancy in multi-unit residential buildings. As a result a shorter baseload (R2 of 0.9806) was considered most suitable for comparison.

EndoTherm was installed on the 2nd November 2020. The five months post-install (including the month in which EndoTherm was installed) have been compared with the pre-install baseline.

For each week the known value for HDD (x) was input into the trendline equation to predict consumption based on the demand profile for the 8 weeks immediately before installation.:


Analysis Period HDD Predicted Consumption (M3) Actual Consumption (M3) Difference (M3)
2020-10-27 to 2020-11-26 375.90 21,896.4382 19,401.06 2,495.3782
2020-11-26 to 2020-12-31 643.80 37,273.3624 37,684.84 -411.4776
2020-12-31 to 2021-01-27 556.40 32,256.772 26,429.83 5,826.9472
2021-01-27 to 2021-02-23 711.60 41,164.9468 35,028.03 6,136.9168
2021-02-23 to 2021-03-29 538.90 31,252.3122 28,511.19 2,741.1222
Total 163,843.84 147,054.95 16,788.89



Total Saving:


Total Cash Saving:

$4,532 (CAD)

Total CO2e Saving:




Contact Us

Permission to contact:

11 + 10 =

EndoTherm Selected by US GSA Green Proving Ground Program

The U.S. General Services Administration’s (GSA) Green Proving Ground (GPG) program, in collaboration with the U.S. Department of Energy (DOE), has selected six innovative building technologies for...

EndoTherm takes third place at National Energy Efficiency Awards

The leading lights of the energy efficiency industry came together on Friday 18th February 2022 at the Hilton Birmingham Metropole to celebrate the accomplishments achieved by the sector over the...

International Journal of Energy Management features EndoTherm

EndoTherm is featured in the latest issue of the International Journal of Energy Management (Volume 3, Issue 5, 2021) which is published by the Association of Energy Engineers (AEE). Founded in 1977...

Aboriginal Housing Management Association Published Case Study

Who are AHMA? AHMA is an umbrella organization composed of 41 Members that are each Indigenous Housing and Service providers. Our members represent over 5000 Indigenous families living...

EndoTherm is a pre-approved technology under the REC program provided by the MCCAC in Alberta

Who are the MCCAC? The Municipal Climate Change Action Centre (MCCAC) was founded in 2009 as a collaborative initiative of the Alberta Urban Municipalities Association, Rural...