Tariffs Hit. Call-Only Ads Die. The Five-Layer HVAC Stack for the 2026 Busy Season.

Two things hit your shop at the same time this spring. Equipment costs are climbing again, and the ad format that drove the bulk of your emergency calls is being put down.

In early April, the White House overhauled Section 232 tariffs on steel, aluminum, and copper. The U.S.-origin metal exemption is gone. According to HARDI import data cited by ACCA, Mexican-made HVAC equipment was running an effective tariff rate of roughly 8 percent because about 84 percent of the metal content was U.S.-sourced. Under the new rule, that same unit faces a flat 25 percent tariff on the entire value. Mexico is the single largest exporter of HVACR equipment to the United States. Distributors will pass it down. You will pass it on.

Layer in the refrigerant transition. R-410A new system installs are over. Manufacturers are shipping R-32 and R-454B. Most contractors are quoting equipment 10 to 15 percent higher than this time last year, and the R-410A you do stock is climbing every month as production winds down toward 2036.

Now the marketing side. In February 2026, Google stopped accepting new call-only ad creation. Existing call-only ads keep serving through February 2027, then they go dark. If call-only has been your overnight emergency call engine, you have a clock on it. And AI Max is auto-replacing Dynamic Search Ads across all eligible campaigns this September.

The Quiet Killer: AI Overviews

Per BrightEdge's AI Overviews Tracker pulled in February, AI Overviews are showing up on roughly 48 percent of tracked search queries. Seer Interactive measured paid click-through rates dropping up to 68 percent on AIO queries at peak. That number recovered slightly through Q1, but the structural change is locked in. Homeowners typing "AC not cooling" are reading an AI summary above the fold before they see your ad.

That summary is pulling from your Google Business Profile, your service pages, and your reviews. If your site does not answer the question in plain words, the AI grabs your competitor's content instead.

The New 2026 Busy Season Stack

The contractors winning May through September are running five layers, not one. Call-only alone is dead.

Layer 1: Responsive Search Ads with call assets. This is the official Google replacement. Migrate your top three call-only campaigns this week. Pause underperformers and roll the budget into RSAs. Document what worked so you can rebuild the keyword and bid logic in the new format.

Layer 2: Local Service Ads. LSA pay-per-lead with Google Verified badge is now mainstream for HVAC. National blended cost per lead is sitting near $53 per SearchLight Digital, but in plumbing and HVAC busy season markets it runs into the $70 to $90 range. Audit your "job type not serviced" leak weekly. Automated credits replaced manual disputes mid-2025. If you are not pulling the report, you are leaving money in Google's pocket.

Layer 3: AI-search optimized service pages. Every refrigerant question, every tariff question, every "should I repair or replace" question needs a plain-language answer page on your site. AI Overviews quote pages that answer cleanly in the first two paragraphs. Build pages for: "R-410A vs R-454B in 2026," "Why is my AC repair more expensive this year," and "Should I replace my R-410A unit now." Local, specific, dated.

Layer 4: Google Business Profile freshness. The local pack shrunk from a stable 3-pack to 1 or 2 listings per Wizard of Ads reporting in April. Cycling is aggressive. Your GBP needs weekly photo posts, weekly service area posts, and same-day review replies. Tie review requests to job completion in ServiceTitan or Housecall Pro so an SMS fires the second the tech marks the job done.

Layer 5: Owned audience. Email list. SMS list. Maintenance plan members. The CRM customers who already bought from you. When Google charges you $80 a lead and a service plan member texts you for a tune-up, that lead cost is zero. Run a refrigerant transition email to your full database this month. Educate, do not pitch. The replies will outpace your paid spend.

The Tuesday Morning Punch List

Run this every Tuesday before the dispatch board fills up:

• Tariff and price sheet check. Pull last week's equipment invoices from your supplier. If your sell price has not moved with the cost, your margin is bleeding.
• Call-only migration status. How many call-only campaigns still live? How many ported to RSAs with call assets? Goal: full migration before Q3.
• LSA leak audit. Open the LSA dashboard. Sort by disputed credits and "job type not serviced." Anything stuck for more than 14 days, escalate.
• GBP freshness check. Last photo posted? Last service area post? Last review reply? If any line says "more than 5 days," fix it before noon.
• Refrigerant Q&A page status. Three new pages this month, dated. AI Overviews reward dated, local, specific.

Bottom Line

Equipment costs are going up. The refrigerant rule is squeezing your install pipeline. Google is killing the lead format you have leaned on for a decade. AI is intercepting half your top-of-funnel before the homeowner ever sees a paid ad.

You cannot wait for the next slow week to fix this. The busy season is on you right now. Build the five-layer stack, run the Tuesday punch list, and price your jobs like the tariff letter showed up in your inbox this morning. Because it did.