Google is auto-upgrading all Dynamic Search Ads to AI Max starting September 2026. For plumbers, HVAC companies, lawyers, and other service businesses, here is exactly what changes and how to prepare.
Ido Cohen · Published 2026-07-26 · Paid Advertising
Google is forcing every Dynamic Search Ads campaign into its new AI Max platform starting this September, whether you ask for it or not. For service businesses — plumbers, HVAC contractors, lawyers, dentists, real estate agents — that run Google Search to pull in local leads, this is the most consequential ad-platform change in years, and the countdown clock is now under 60 days. If you are not paying attention, Google's algorithm will rewrite your campaigns for you, on its own timeline, with its own judgment about what your ads should say and where they should send traffic.
Dynamic Search Ads (DSA) — the campaign type that crawled your website and auto-generated headlines based on your page content — is being retired. AI Max for Search is its replacement.
According to Google's official announcement, AI Max for Search officially moved out of beta after being adopted by hundreds of thousands of global advertisers. The transition is not optional: starting in September 2026, Google will automatically upgrade any campaign still running DSA, automatically created assets (ACA), or campaign-level broad match to AI Max equivalents. Advertisers who do not migrate themselves before the deadline will have it done for them. The full DSA sunset and forced auto-migration was originally planned for September, then partially pushed to February 2027 after advertiser pushback — but the September wave is still real and still coming for ACA and broad match campaigns. Per Google's own blog, "campaigns using Automatically Created Assets and campaign-level broad match setting will continue to be auto-upgraded starting in September 2026."
DSA has been in the market since 2011. That is 15 years of an ad format built around static landing-page signals. Google's stated reason for the change is that modern search intent — driven by conversational queries, AI Overviews, and real-time context — has outpaced what a page-matching system can handle. AI Max is designed to read intent signals beyond your website, dynamically generate and customize ad copy, and match queries to destinations automatically using Gemini-powered models.
Most Google Ads feature changes are cosmetic or optional. This one is structural.
According to analysis from PPC Blog Pro, the retirement of Dynamic Search Ads "is one of the most significant structural changes to Google's search advertising platform in years." DSA was introduced in 2011 as a catch-all for traffic beyond keyword campaigns, and after 15 years, the signals it relies on — static website landing pages — no longer reflect the full complexity of modern search intent.
Here is what is fundamentally changing under the hood:
This is not a tweak. As perform.digital summarized in their analysis, "the keyword is becoming a signal rather than a target, manual SEM labor is being automated away, and the deadline for the first big piece is September 2026."
And then there is the legal angle. The Google Ads Terms of Service were rewritten effective July 1, 2026 — the first substantive update since April 2018 — to formally authorize Google's automated systems to "format, select, or generate targets, ads, or destinations" on an advertiser's behalf. Per Google's updated terms, advertisers remain responsible for reviewing and approving assets. AI picks what runs; you own the consequences.
AI Max for Search is Google's AI-native advertising layer for Search campaigns. Think of it as DSA rebuilt on top of Gemini with three core capabilities:
1. Search term matching — AI matches your ads to queries based on inferred intent, going beyond your keyword list to capture searches you might otherwise miss.
2. Text customization — AI writes or modifies headlines and descriptions dynamically based on the specific query, the user's context, and your website content.
3. Final URL expansion — AI selects the most relevant landing page on your site for each query, rather than always sending traffic to a single destination.
According to Google's internal data, AI Max campaigns using the full feature suite — all three capabilities enabled — see an average of 7% more conversions or conversion value at a similar cost per acquisition (CPA) or return on ad spend (ROAS) compared to using search term matching alone. A separate data point from Google Marketing Live 2026 cited AI Max driving 27% more conversions compared to fully manual campaigns.
To be transparent: the 7% figure comes from Google's own internal data for non-retail advertisers. Independent verification is limited. That said, the directional signal is consistent — AI-managed targeting and copy tends to win on volume, while the risks tend to show up in relevance drift and brand control.
Here is the specific sequence every service business with Google Ads needs to know:
The key nuance: the February 2027 extension applies specifically to the forced migration of active DSA campaigns. The September wave — which covers automatically created assets and campaign-level broad match — is not delayed. If you use those features, September is your real deadline.
For HVAC companies, plumbers, electricians, and contractors who built their lead generation on DSA campaigns, according to Valley Marketing Group, "this deadline matters now." The businesses that migrate themselves before September stay in control of their settings and keep their historical conversion data intact. The businesses that wait get migrated on Google's terms.
Service businesses have a particular exposure to AI Max's more aggressive features that product retailers do not.
Irrelevant service matching. An HVAC company's website likely covers installation, repair, tune-ups, commercial work, emergency calls, and financing. AI Max's search term matching and final URL expansion could send "emergency AC repair" queries to your financing page, or match a query for "HVAC maintenance contract" to a landing page optimized for one-time installs. Without tight URL exclusions and negative keyword lists, you will pay for clicks that land in the wrong place.
AI-generated headline risk. Text customization can produce headlines that technically reflect your site content but do not match your brand voice or local positioning. A personal injury law firm could end up with AI-generated headlines that sound generic or, worse, make claims that create compliance exposure. Per Google's updated July 2026 terms, advertisers remain responsible for what runs.
Service-area drift. If your site mentions cities you used to serve or no longer cover, AI Max will find them. Negative location modifiers and tight geographic targeting settings need an audit before the upgrade.
Thin websites get penalized. AI Max draws on your website content for context. A five-page site with thin copy gives the AI less to work with, which means it fills gaps with its own inference. Service businesses with rich, specific, location-detailed pages will outperform those with generic placeholder copy.
The Adweek analysis of the migration noted that AI Max "helps advertisers anticipate user intent rather than rely on outdated keyword strategies — even for complex queries." That is a real benefit. But complex queries in service categories include a lot of research intent that you do not want to pay for — someone comparing HVAC brands, for example, rather than someone booking a service call today.
Step back from the tactical details and the strategic message is clear: Google is betting that AI-managed targeting beats human-managed keyword lists at scale, and it is betting so strongly that it is making AI the default rather than the option.
Marketing Dive noted that Google's "more ambitious push into AI-powered advertising comes as its long-standing position as the top digital ad platform is increasingly challenged." Per eMarketer's forecast, Meta is projected to surpass Google in digital ad revenues for the first time in 2026. That competitive pressure accelerates Google's timeline for AI-native advertising — it needs a story that beats Meta's own AI-powered ad targeting, which is already dominant in social.
For service businesses, the implication is straightforward: the era of managing a tight keyword list with manual bids and exact-match control is ending. The new model is feeding the system — your budget, your conversion goals, your landing pages, your brand guardrails — and letting the AI optimize the rest. The businesses that succeed in this environment are not the ones who resist automation. They are the ones who set it up correctly so the automation has clean inputs to work with.
You have roughly five to eight weeks before the first wave of auto-upgrades begins. Here is the specific checklist, in priority order:
1. Audit your active DSA campaigns right now. Pull conversion data, search terms, and landing page performance for every active DSA campaign. This gives you a baseline to compare against after the migration.
2. Update your negative keyword list. AI Max's expanded matching will find searches your DSA never reached — including irrelevant ones. Before the upgrade, add negative keywords for services you do not offer, locations you do not serve, and commercial-intent searches outside your scope (like competitor brand names).
3. Set URL exclusions. Block pages that should never receive paid traffic — careers pages, privacy policy, old promo pages, thank-you pages. In Responsive Search Ads and AI Max, you can set URL inclusions and exclusions at the campaign and ad group level. Do this before Google's automation picks landing pages for you.
4. Audit your website content. AI Max reads your site. Any outdated service pages, old price references, expired promotions, or cities you no longer cover will feed into how AI matches and writes your ads. A content audit is now a paid-ads task, not just an SEO task.
5. Migrate at least one campaign voluntarily before September. Running AI Max on one campaign before the forced upgrade gives you real performance data under your control, so you can optimize settings before they apply across your account. Use Google's one-click experiment tool to test AI Max against your existing setup.
6. Tighten your geographic targeting. Set explicit location targeting for the specific cities and radius you serve. Do not rely on site content alone to signal geography to the AI.
7. Review Performance Max separately. PMax is also gaining automatically generated images and expanded video capabilities in 2026. If you run PMax alongside Search, audit those assets too — they are now subject to the same AI generation logic under the July 1 TOS update.
The businesses that treat this migration as a compliance checkbox will spend September patching broken campaigns. The businesses that treat it as an opportunity to build cleaner inputs — better pages, tighter negatives, sharper conversion tracking — will come out of it with a stronger foundation.
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What is Google AI Max for Search, exactly?
AI Max for Search is Google's AI-native replacement for Dynamic Search Ads and several other legacy targeting features. It uses Gemini-powered models to match ads to search queries based on inferred intent (not just keywords), generate and customize ad copy dynamically, and select the most relevant landing page on your site for each query. It officially exited beta in April 2026 and is now being rolled out as the mandatory successor to DSA.
Do I have to switch to AI Max, or can I keep running DSA?
You cannot keep running DSA indefinitely. Starting in September 2026, Google will automatically upgrade campaigns using automatically created assets and campaign-level broad match to AI Max equivalents. Active DSA campaigns specifically are being extended to February 2027 before forced migration, but new DSA campaigns cannot be created after September. The safest move is to migrate at least one campaign voluntarily now, on your own terms, before Google does it for you.
Will AI Max cost more than my current campaigns?
AI Max is not a pricing change — it is a targeting and creative change. Your cost-per-click and budget settings carry over during migration. According to Google's internal data, AI Max with all features enabled delivers an average of 7% more conversions at a similar CPA/ROAS compared to search term matching alone. However, that figure comes from Google's own studies for non-retail advertisers, and individual results will vary based on how well your account is set up going in.
Who is responsible if AI Max generates an ad with incorrect or misleading claims?
You are. Under Google's updated Terms of Service effective July 1, 2026, advertisers remain responsible for reviewing and approving the assets that run in their campaigns, even when those assets are generated by AI. If AI Max writes a headline you did not intend, you are still accountable for it. This makes regular campaign audits non-optional — set a weekly calendar block to review what is actually running.
What should service businesses do to prepare before September 2026?
The five highest-priority steps are: (1) pull your current DSA campaign performance data now so you have a baseline; (2) update your negative keyword list to block irrelevant query categories; (3) set URL exclusions so AI cannot send paid traffic to the wrong pages; (4) audit your website content to remove outdated or misleading service references; and (5) migrate one campaign voluntarily to AI Max before the deadline so you can test and optimize before it goes mandatory across your account.
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