IESO & Enbridge Boost Incentives for Aeroseal Ventilation Upgrades—20% Subsidy Now Available
The Independent Electricity System Operator (IESO) and Enbridge Gas have announced a significant enhancement to their incentive program, upping their subsidy to cover 20% of the cost of Nerva Energy’s Aeroseal ventilation repair and seal optimization projects. By reducing duct leaks and tightening building envelopes, this partnership delivers “more air, more savings and less carbon” to schools, hospitals and businesses across Ontario.
How It Works
Aeroseal is an advanced technology that locates and seals hidden leaks in heating, ventilation and air-conditioning (HVAC) ductwork. A non-toxic sealant is aerosolized and circulated through the system; under pressure, it adheres precisely at leak points—automatically plugging gaps without major demolition or replacement of duct runs.
Why the 20% Subsidy Matters
With IESO and Enbridge now underwriting a quarter of project costs, property owners face much lower overall project cost. That makes Aeroseal accessible to a wider range of buildings—from schools to multi-unit residential complexes and commercial facilities.
Key Benefits
• Enhanced Indoor Air Quality: By ensuring that conditioned air reaches its intended destination, Aeroseal reduces pollutants, allergens and humidity imbalances.
• Energy Savings: Tightening ducts can cut HVAC energy use by 15–30%, translating into lower electricity and gas bills.
• Carbon Emission Reductions: Less wasted energy means fewer greenhouse-gas emissions. On average, a mid-sized building can eliminate 20-30% several tonnes of CO₂ per year.
Voices from the Field
“Nerva Energy has deployed Aeroseal in hundreds of Ontario sites,” says CEO Maya Patel. “With the new 20% subsidy, we expect a surge in projects—and measurable gains in comfort, cost-savings and carbon mitigation.”
How to Apply
Eligible customers should contact Thomas Cole Inc., an agent of Nerva Energy, the exclusive contractor/installer of Aeroseal in Ontario. After a free assessment, the contractor will provide a detailed proposal indicating the total cost, your 20% rebate amount and projected payback period.
Nerva Energy’s Aeroseal duct-sealing service follows a proven five-step process to tighten your HVAC distribution system, improve air quality, cut energy bills and reduce carbon emissions:
STEP 1 Audit & Evaluation
• Data gathering and site inspection for an efficient and effective project plan.
• Every building is different based on type, location, and its HVAC system. With a thorough understanding of a building's current state, we ensure an efficient and effective project timeline.
• The outcome from the initial air audit will reveal the percentage of air loss for each ventilation system and the number of air exchanges per hour (ACH) to determine which spaces serviced by the air handling system is under ventilating space or over ventilating space.
STEP 2 Ventilation ductwork repair, and correcting ventilation system deficiencies
• Often duct work will require repair of holes, crushed duct work, dislocated duct work from diffusers.
• Ventilation system dampers, coil cleaning and belt tightness are examined and repaired if need be.
• The ventilation system is pressurized and a “party fog” is released to determine if there are remaining holes and deficiencies with the ductwork.
STEP 3 Ductwork Aerosolized sealant
• Using our non-invasive technology, we seal the ductwork to ensure the building's HVAC system can operate at peak efficiency.
• The sealant migrates to seal holes the size of a hair follicle or 5/8ths of an inch.
• A computerized program measures the rate of seal in real time. When the leakage rate reaches approximately a 2 percent leakage rate the sealant process is complete and a certificate of seal performance is generated.
STEP 4 Post seal air audit
• Upon completion of Step 3, a post air audit is performed replicating the initial air audit process to determine the increase in air flow per ventilation system and the post ACH for each air handling system.
• A report is developed for review and discussion to determine next steps.
STEP 5 Energy and GHG Plan
• From Step 4 post air audit, air handling systems that exceed the required ACH standard for occupied space are opportunities to harvest energy and GHG.
• A plan is developed for energy and GHG harvesting.
• Air handlers that have VAV systems, the energy and GHG savings are instant due to the pressure increase from duct sealant, thus the motor speed is turned back. If VAVs or VFDs are not present, additional scope is required to install a VFD to allow motor speed turn down to induce energy and GHG savings.
This turnkey process requires no demolition, avoids major equipment replacement and delivers measurable comfort, cost and carbon benefits—especially now that up to 20% of your project can be subsidized by IESO & Enbridge.
By teaming up to subsidize Aeroseal projects, IESO and Enbridge are accelerating Ontario’s path to net zero. Property owners get healthier, more efficient buildings—and the province reaps the rewards of lower peak-demand stress, reduced utility costs and significant emissions cuts. Don’t miss this opportunity to seal in savings and seal out carbon.