The headline number behind President Trump's June 1, 2026 proclamation adjusting Section 232 tariffs on residential HVAC equipment is now in: according to HARDI's initial analysis, the adjustment will help American consumers keep nearly $2.3 billion in their pockets by avoiding future price increases that would otherwise have resulted from the original tariff increase. That figure, along with a second estimate suggesting the change will support $2.9 billion in broader economic activity and preserve $1.7 billion in value added to GDP, gives HVAC contractors and distributors the clearest quantified picture yet of what the tariff relief actually means in dollar terms.
HARDI's vice president of government affairs, Alex Ayers, was direct in welcoming the change: the administration is recognizing that access to affordable heating and cooling is a matter of safety and economic stability for American families and businesses. That framing matters because it positions HVAC equipment affordability as a policy priority in its own right, not merely a side effect of broader tariff negotiations focused on steel, aluminum, and copper.
What Actually Changed, in Plain Terms
The proclamation lowers the Section 232 tariff rate on covered residential HVAC systems and components from 25% to 15%, with the new rate taking effect June 8, 2026 and remaining in place through December 31, 2027. The covered products include air-conditioning machines, parts of air-conditioning machines, evaporator coils, and parts of heat pumps for air-conditioning machines that were previously classified as standard 25% steel or aluminum derivative products under the prior tariff structure.
A second, less publicized but potentially more consequential change in the same proclamation lowers the threshold for a product to qualify as made entirely from domestic metal from 95% to 85%. This adjustment matters because it expands the pool of HVAC equipment that can qualify for the even lower 10% tariff rate reserved for products made overwhelmingly from U.S.-melted and poured steel, aluminum, or copper. HARDI specifically noted that this lower domestic content threshold will help many product categories not included in the new 15% HVAC exemption, meaning the benefit of this proclamation extends meaningfully beyond just the specific products named in the residential HVAC carve-out.
Why This Tariff Relief Happened Now
The timing of this adjustment is directly tied to mounting evidence of the cost pressure tariffs were creating across the HVAC supply chain. Lennox and Carrier both specifically cited tariffs, alongside fuel and raw material prices, as contributors to increased input costs in their first quarter 2026 earnings reports. Separately, Associated Builders and Contractors data showed construction input prices rising 1.7% in April alone, with input prices climbing more in the first four months of 2026 than over the prior three years combined, with tariff-affected materials like iron and steel posting particularly large increases.
HARDI did not arrive at this outcome passively. The association ran a sustained advocacy campaign ahead of the proclamation, including a Congressional Fly-In and a grassroots effort that generated nearly 10,000 messages sent through HARDI's advocacy platform to the Trump Administration and Congress. ACCA separately submitted formal comments to the administration in April specifically outlining concerns about how tariffs were affecting equipment availability, affordability, and contractor operations. The coordinated advocacy from both the distribution side, through HARDI, and the contractor side, through ACCA, appears to have directly shaped the administration's decision to expand the reduced tariff category to include residential HVAC equipment.
