Consult the specifications of all our drain water heat recovery units and our safety and efficiency standards compliance.


When you choose to buy a drain water heat recovery system for your home, you need to be sure the efficiency of the unit is guaranteed.

As a contractor, you need to know you can install a unit in your different project safely and within the Construction standards.

Intertek certification

  • CSA B55.1 verifies the efficiency and performance of the ThermoDrain.
  • CSA B55.2 verifies the construction and components used to build the ThermoDrain to ensure that they are safe for use with potable water.

CSI Code: 22 30 00 Plumbing Equipment
Description: Drain Water Heat Recover Pipe for residential or commercial use.


  1. Intertek safety certified to CSA B55.2

  2. Intertek performance verified to CSA B55.1

drain water heat recovery resources

ThermoDrain Specification sheets

Our ThermoDrain specification sheets show the efficiency of each unit in regards to their dimensions and their weight.

When you choose a model, you will need to take in consideration how much space you have to install it.

Consult the 2nd page of the appropriate specification sheet below for the exact performance expected for each model.

PDF – ThermoDrain 3″ drain diameter specifications sheets

PDF – ThermoDrain 4″ drain diameter specifications sheets

ThermoDrain Length versus Efficiency

drain water heat recovery efficiency

Natural Resources Canada drain water heat recovery database

The efficiency of a drain water heat recovery unit is measured by a value called the Heat Recovery Efficiency, which is expressed as a ratio between the actual heat transfer and the theoretical maximum possible heat transfer. After selecting the size required, choose high heat recovery efficiency models, as these are the most efficient.

Visit the following direct links to Natural Resources Canada’s database on drain water heat recovery systems.

ThermoDrain 3″ drain diameter

TD340A – 40″ long, 1/2″ single coil, 46.0% efficiency, 1673 kWh

TD336B 36″ long, 3/4″ single coil, 39.2% efficiency, 1425 kWh

TD338B 38″ long, 3/4″ single coil, 40.4% efficiency, 1469 kWh

TD340B 40″ long, 3/4″ single coil, 41.6% efficiency, 1513 kWh

TD342B42″ long, 3/4″ single coil, 42.8% efficiency, 1556 kWh

TD344B44″ long, 3/4″ single coil, 43.9% efficiency, 1596 kWh

TD346B 46″ long, 3/4″ single coil, 45.0% efficiency, 1636 kWh

TD348B48″ long, 3/4″ single coil, 46.0% efficiency, 1673 kWh

TD350B 50″ long, 3/4″ single coil, 47.0% efficiency, 1709 kWh

TD352B52″ long, 3/4″ single coil, 48.0% efficiency, 1745 kWh

TD354B54″ long, 3/4″ single coil, 48.9% efficiency, 1778 kWh

TD356B56″ long, 3/4″ single coil. 49.8% efficiency, 1811 kWh

TD358B – 58″ long, 3/4″ single coil, 50.7% efficiency, 1844 kWh

TD360B – 60″ long, 3/4″ single coil, 51.5% efficiency, 1873 kWh

TD362B – 62″ long, 3/4″ single coil, 52.3% efficiency, 1902 kWh

TD364B – 64″ long, 3/4″ single coil, 53.0% efficiency, 1927 kWh

TD366B – 66″ long, 3/4″ single coil, 53.7% efficiency, 1953 kWh

TD368B – 68″ long, 3/4″ single coil, 54.4% efficiency, 1978 kWh

TD370B – 70″ long, 3/4″ single coil, 55.0% efficiency, 2000 kWh

TD372B – 72″ long, 3/4″ single coil, 55.6% efficiency, 2022 kWh

ThermoDrain 4″ drain diameter

TD442B – 42″ long, 3/4″ single coil, 46.0% efficiency, 1673 kWh

TD460B – 60″ long, 3/4″ single coil, 57.3% efficiency, 2084 kWh

TD472B – 72″ long, 3/4″ single coil, 58.4% efficiency, 2124 kWh