A coalition of four national HVAC trade associations has thrown its support behind the SMART Energy Efficiency Standards Act, a bill introduced in the U.S. Senate that would change how compliance dates are calculated for regional energy efficiency standards covering furnaces, central air conditioners, and heat pumps. The Air Conditioning Contractors of America (ACCA), the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), Heating, Air-conditioning and Refrigeration Distributors International (HARDI), and the Plumbing-Heating-Cooling Contractors-National Association (PHCC) issued a joint letter of support for the legislation around July 7, 2026.
The bill, S. 4892, was introduced by Sen. Joni Ernst, R-Iowa, on June 24, 2026. It was read twice and referred to the Senate Committee on Energy and Natural Resources, where it currently sits awaiting further action.
What the SMART Energy Efficiency Standards Act Would Change
The legislation would amend the Energy Independence and Security Act of 2007 by changing the compliance date for regional energy efficiency standards for furnaces, central air conditioners, and heat pumps to the date of manufacture, rather than the date of installation, which is how compliance is currently determined under federal law.
The bill's approach mirrors a manufacture-date compliance model already used elsewhere in federal appliance regulation, where responsibility for meeting a given efficiency threshold rests with the entity that builds the product rather than the installer who may have no way of knowing how long a unit has been sitting in a warehouse or on a distributor's shelf before a customer buys it.
In its letter of support, the industry coalition described the problem the bill is intended to fix: "Under current law, compliance with regional energy efficiency standards is based on the date equipment is installed rather than the date it is manufactured. This creates unnecessary complexity throughout the HVAC supply chain by effectively causing otherwise fully compliant equipment to expire after it has been legally manufactured, purchased, and distributed."
Industry Coalition Support for the SMART Energy Efficiency Standards Act
The coalition argued that shifting to a date-of-manufacture standard "places compliance responsibility where it belongs — with the manufacturer — and ensures that every product entering the distribution chain complies with applicable Department of Energy requirements." The groups also said the change would prevent "legally manufactured and purchased equipment from becoming stranded inventory."
In their closing statement, the four associations wrote: "America's HVAC manufacturers, distributors, and contractors, who make, distribute, and install some of the most innovative and energy-efficient products in the world, appreciate your leadership in introducing this much-needed legislation. The SMART Energy Efficiency Standards Act will provide business certainty throughout the HVAC supply chain, reduce unnecessary costs and complexity, and ensure a more orderly transition to future energy efficiency standards."
Background on Regional Efficiency Standards
Regional energy efficiency standards for furnaces, central air conditioners, and heat pumps were established under the Energy Independence and Security Act of 2007, which divided the country into regions with different minimum efficiency requirements based on climate. The Department of Energy administers these standards, and manufacturers, distributors, and contractors are required to ensure that equipment installed within each region meets the applicable minimum efficiency level.
Because compliance under current law is tied to the installation date rather than the manufacture date, equipment that was fully compliant at the time it left the factory can become non-compliant if it sits in distributor or contractor inventory long enough before being installed, particularly as new, higher standards take effect. Trade groups have raised this as a recurring concern in past efficiency-standard transitions, arguing it creates inventory and liability risk across the supply chain without a corresponding improvement in real-world energy savings.
What's Next
S. 4892 remains in committee, and no hearing or committee vote date has been scheduled. As with most legislation at this stage, the bill would need to clear the Senate Energy and Natural Resources Committee before a floor vote could be scheduled in either chamber. The coalition letter represents a formal show of industry support intended to build momentum for the bill as it awaits committee action.
Why Compliance Dates Matter for the HVAC Supply Chain
Efficiency-standard transition periods have repeatedly created friction for manufacturers, distributors, and contractors in past cycles, particularly when new regional minimums take effect faster than existing inventory can be sold through. A date-of-manufacture standard would give every party in the distribution chain — from the factory floor to the distributor's warehouse to the contractor's truck — a fixed, known compliance status for a given unit from the moment it is built, rather than a status that can change while the equipment is still sitting unsold.
The four trade associations backing S. 4892 collectively represent equipment manufacturers, wholesale distributors, and installing contractors across the residential and light commercial HVAC market, giving the coalition letter weight across multiple points in the supply chain rather than a single industry segment.
