Récupération de chaleur des eaux de drainage
Residential Drain water heat recovery systems
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Residential
Drain water heat recovery Systems


Install a drain water heat recovery unit and receive up to $400

By installing a drain water heat recovery unit1, you could save up to 40 % on your costs for water heating.

How it works

Water from showers contains a significant amount of energy that goes directly down the drain. Installing a drain water heat recovery system means you can recycle some of that energy.

Récupérateur de chaleur des eaux de drainage

Wastewater from the shower flows down the inner wall of the copper pipe and preheats the fresh water from the water supply system which is simultaneously ascending through the coiled copper tubes. The preheated fresh water will therefore be warmer when it enters the water heater, and subsequently when it is sent to the shower.

See how it works
How the drain water heat recovery system works

Advantages

  • The water heater uses less energy for heating water to the desired temperature;
  • The water heater supplies hot water longer;
  • The system requires no maintenance and has a service life of 30-50 years.


Financial assistance from the Energy Efficiency Fund2

The financial assistance is paid based on the efficiency of the unit installed:

  • $250: unit with an efficiency rating of 30-42%
    Close
    Power-Pipe R2-36
    Power-Pipe R2-42
    Power-Pipe R2-48
    Power-Pipe R2-54
    Power-Pipe R3-30
    Power-Pipe R3-36
    Power-Pipe R4-24
    Power-Pipe R4-30     		Eco-GFX S3-40-2
    Eco-GFX 2340-B

    If your unit is not on the list,
    contact the EEF.
  • $400: unit with an efficiency rating over 42%
    Close
    Power-Pipe R2-60
    Power-Pipe R2-66
    Power-Pipe R2-72
    Power-Pipe R2-84
    Power-Pipe R2-120
    Power-Pipe R3-42
    Power-Pipe R3-48
    Power-Pipe R3-54
    Power-Pipe R3-60
    Power-Pipe R3-66
    Power-Pipe R3-72
    Power-Pipe R3-120
    Power-Pipe R4-36
    Power-Pipe R4-42
    Power-Pipe R4-48
    Power-Pipe R4-54
    Power-Pipe R4-60
    Power-Pipe R4-66
    Power-Pipe R4-72
    Power-Pipe R4-120
    		 Eco-GFX S3-60-2
    Eco-GFX S4-40-2
    Eco-GFX S4-60-2
    Eco-GFX G3-40-1
    Eco-GFX G3-60-1
    Eco-GFX 1340-A
    Eco-GFX 1360-A
    Eco-GFX 2360-B
    Eco-GFX 2440-B
    Eco-GFX 2460-B

    If your unit is not on the list,
    contact the EEF.

Consult the energy savings simulation tool

Savings

The greater the simultaneous use of hot water, the greater the savings. Consult the energy savings simulation tool to calculate the potential savings.


Examples of annual savings

Number of
showers/day		 Average duration
of shower		 Annual
savings
4 8 minutes $134
6 9 minutes $227
8 10 minutes $337


* Example for a mixed connection with a standard water heater in Montréal.
The unit is the same in the three examples and the price of the natural gas is $0.59/m3



Installation

You can install the heat recovery units yourself3 or you can call on a professional.4

There are different types of installation and the efficiency of the unit varies depending on how it is installed. Consult the Installation Guide  (PDF | 141 ko) to learn more, or contact a plumbing contractor.


Where to find a heat recovery unit

  • The units are available in some Rona and Réno-Dépôt stores in the Montréal area.
  • At Sears HomeCentral, which also offers an installation service.
    Call 1-800-4-MY-HOME® (1-800-469-4663)
  • On line at www.homedepot.ca
  • Available from plumbing contractors and from plumbing equipment wholesalers.
  • By communicating with one of the two manufacturer/distributors:


Are you eligible for this program?

Gaz Métro customers who own or rent a single-family home, a duplex or triplex with a natural gas water heater are eligible.


Steps to follow:

You have up to 4 months following the installation of your drain water heat recovery system to make a request for financial assistance.

To obtain your rebate, send us, by mail or fax:

Step 1 Application Form:
Step 2 A copy of your bill(s) for the purchase and installation, if applicable, of the drain water heat recovery unit.


1 Financial assistance is available only for equipment meeting the requirements established by the EEF. The units currently recognized appear on this page according to their efficiency under the title Energy Efficiency Fund financial assistance. Contact the EEF for further details regarding the units currently recognized.
2 Financial assistance may also be granted to builders of new houses.
Limit of one rebate per account number.
The financial assistance offered under the ecoENERGY Retrofit program may be added to the financial assistance from the EEF. However, the ecoENERGY Retrofit program is no longer accepting bookings for pre-retrofit evaluations. The program will continue to be administered until March 31, 2011.
Program subject to change without prior notice.
3 The owner may undertake the plumbing work himself for a single-family home. For all other types of buildings, he may also undertake the work, provided the total cost of renovation work is lower that $ 20,000. The work must conform to the Québec Building Code.
4 In some cases, the installation of a drain water heat recovery unit could result in a loss of water pressure. Consult a professional to learn more.
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