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Find the information you need to determine whether your project is connected to the gas network, learn about the most efficient natural gas solutions, or use the tools and resources developed to make your job easier and answer your questions.

Design tools

Consult the tools

Gas network map

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Conditions of service and price

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Natural gas: An asset for your projects

The performance and high efficiency of natural gas equipment make it an unbeatable option for your clients' projects. Coupled with recently developed modern solutions, natural gas is an energy that is perfectly adapted to all types of projects, from small buildings to tall towers. Find out more!

Energy efficiency

Énergir subsidizes high-efficiency appliances and energy efficiency measures to help clients complete their projects. Since 2001, our energy efficiency grant programs have reduced GHG emissions by more than 1.2 million tons!

Grants - High-efficiency appliances
EquipmentEnergy efficiency

Condensing boiler

Eligible equipment
> 300,000 BTU

90%+ efficiency
Heat recovery on combustion products.

Up to $25,000

Mid-efficiency boiler

Eligible equipment

85%+ efficiency
Rapidity in producing even heat in a given space.
$600 to $10,000

Infrared heating unit

Eligible equipment

High-efficiency solution
Ultra-efficient for heating large spaces like warehouses and garages.
$200 to $500 per unit

Contact us to learn more

EquipmentEnergy efficiency
Condensing unit heater

Eligible equipment

Energy savings
Given the high efficiency of condensing appliances.
Up to

Variable speed hood

Eligible equipment

35%-40% reduction
in energy consumption by modulating air extraction in line with what's going on in the kitchen.
$3,500* + $0.45/CFM per exhaust system
Smart thermostat
Eligible equipment
Energy savings
Control heating and air conditioning system remotely via the Internet or a mobile app.
Up to 75% of the cost of the device

* See program conditions.

Grants - Energy efficiency measures
Measures availableEnergy efficiency

Solar air preheating

Participant guide

To encourage the installation of solar air preheating system for space heating or processes and preheating water.

$3/m³ natural gas saved
Up to $200,000

Energy efficiency measures

Participant guide

To encourage the implementation of energy efficiency measures that optimize the use of natural gas.1$/m³ natural gas saved
Up to $1MM
New efficient construction

Participant guide
To encourage the construction of energy efficient buildings.$5/m³ natural gas saved
Up to $325,000

Contact Datech to learn more

Measures availableEnergy efficiency
Feasibility study

Participant guide
Reimbursement of part of the cost of a study on energy efficiency measures.50% of the cost of the study
Maximum $50,000

Participant guide
A 10%–15% reduction in consumption through the recommissioning of
mechanical systems.
Obtain up to 50% off the cost of projects
Energy-efficient renovationsImprove the thermal envelope of buildings.Up to $40,000 (consumption ≤ 150,000 m³/year)
Up to $100,000 (consumption
> 150,000 m³/year)
Registered firms

Registered firms are consulting engineering firms specializing in energy efficiency that can support Énergir customers in identifying and implementing energy efficiency projects. Having already carried out energy efficiency projects for Énergir customers, and with access to information about the energy efficiency grants offered, these firms are well placed to guide customers and facilitate their participation in Énergir's energy efficiency grant programs

Énergir has made a directory of registered firms available to its customers. This directory is meant to be a tool to help customers identify and find contact details of firms that offer energy efficiency services. None of these firms is a subsidiary or partner of Énergir, and making this directory available in no way certifies, attests to, or guarantees the quality of the services offered by these firms.

Business and Institutional dual-energy offer (BI)

The Government of Québec (MELCCFP), Hydro-Québec and Énergir are partnering to support customers in their conversion to the dual-energy electricity-natural gas solution, which consumes the right source of energy at the right time and at the lowest cost.

Role of the engineer

Engineering is required for large and often more complex projects. The engineer’s role includes, but is not limited to, the following:

  • Help the customer choose the best dual-energy solution.
  • Prepare the mechanical systems design.
  • Fill out the ÉcoPerformance form.
  • Complete the commissioning report.

The grants

For the next few months, you will not have access to the grant calculator for the simplified process. When assisting a customer, be sure to contact the Énergir representative for the project street address. Representatives are equipped to use the calculator and will be able to confirm grant amounts for your dual-energy projects.

For custom projects, the Government of Québec will analyze the dual-energy conversion request and determine the grant amounts that will be awarded.

Here are several helpful links to help you with this new offer. If you have any questions, contact our DATECH advisors.

  • Website – Forms and guides for business/institutional dual energy (in French)
  • Normative framework for the ÉcoPerformance Program (in French), in effect since October 3, 2023 (Section 8 – page 45)

Tools and publications

Énergir has developed numerous calculation tools to facilitate your projects and it regularly publishes articles and information about new techniques to help you stay on top of the latest technological innovations.

Designing tools

Natural gas solutions are efficient, economic and ideal for your customers' energy projects. To assist you in designing these solutions, we have created tools comprising best practices developed in collaboration with experts and recognized professional associations in the field. Looking for help in designing these natural gas solutions?

Contact us

Small commercial buildings

Heating systems

Rooftop unit, unit heater and infrared heating system

Multidwelling and tall buildings

Centralized hot water systems

Centralized hot water system

Calculation tools

Conversion factors
With our unit of measurement converter, you can convert gigajoules into cubic meters, cubic feet into BTU, or carry out any other conversion you need to make.

Weather calculation (hour BIN)
This calculator offers up-to-date weather data to calculate degree-day data for space heating and cooling.

Ventilation calculator
In addition to offering up-to-date weather data, this tool allows you to determine how much natural gas your ventilation system might consume and the energy savings you could generate if you opt for heat recovery.

Rooftop units energy savings calculator
Use our calculator to estimate energy savings with efficient rooftop units.

Natural gas pipe sizing
Based on the formulas in sections A.3.5 and B.3.5 of CSA B149.1-10 – Natural gas and propane installation code, this calculator estimates the maximum natural gas and propane capacity specifically for plastic and schedule 40 (SCH 40) blowjob. For copper tube estimates, refer to tables A.8 through A.14 and B.6 through B.10 in CSA B149.1-2010.

SPEC tool
This simulation tool was developed to calculate the energy efficiency of your steam boiler room. This is a key step to fully understanding the effectiveness of your steam boiler room and making informed decisions. Plus, you can assess the potential energy savings for five parameters (the most popular): economizers, blowdown reduction, blowdown recovery, micro-modulation and deaerator vent recovery.

Sign up for our email newsletters

The DATECH team prepares articles for engineers to keep them up to speed on the latest industry news that could be relevant to their projects. Here are two tools you can sign up for:

Bulletin blue engineers (French only)

  • Three mailings a year
  • Short articles on the latest industry news, energy efficiency grants available, and our upcoming events and training sessions.

Would you like to be on our mailing lists?

Sign-up today


  • Three mailings a year
  • Technical articles on various innovative topics such as minimalist ducts, or case studies featuring high-efficiency installations.

Read the articles


These specialized Énergir engineers work closely with our commercial representatives to offer you the technological solutions that are most efficient and best suited to your needs.

Learn more

Need assistance on your project?

Contact DATECH