PPC for Plumbers: Match Types, Negative Keywords & Call-Only Campaigns
You're spending $400 a week on Google Ads and getting calls from people 45 minutes away or asking for DIY advice. Your ads are broad, your negatives are weak, and your campaigns are set up like every other business, not a plumber.
The fix is not cutting budget. It's tightening three mechanical levers: keyword match types, a hardened negative keyword list, and call-only campaigns that eliminate the browser-to-clicker waste. This post walks you through each one with real numbers and setup you can action tomorrow.
Why Standard Google Ads Fail Plumbing Businesses
When you set up Google Ads for plumbers without plumbing-specific rules, you inherit the default settings that Google optimizes for engagement and impressions, not calls. Those defaults cost you money.
A 7-truck outfit in Charlotte we audited was running broad match keywords like "plumbing" and "water damage." They paid $62 per click on average. Most clicks came from keyword variations they never intended: "plumbing course online," "become a plumber," "plumbing supply store." None of those clicks convert to service calls.
The second failure point: no negative keyword strategy. Without negatives, your ads show for every tangential search. Plumber homeowners, supply companies, contractors in adjacent trades, DIY content seekers. They click. They waste your money. This is where most shops bleed budget.
The third failure: text ads that send clicks to a homepage or generic landing page. Clicks matter less than calls in a service business. A text ad click on a homepage has to clear three more friction points (scroll, click through, submit form) before a dispatcher gets a call. Call-only campaigns remove that friction and cut lead cost by 30-50% in most markets.
This is why PPC for plumbers requires a different playbook than e-commerce or SaaS. You're not measuring conversions. You're measuring inbound calls and appointment books.
Keyword Match Types: The Architecture That Controls Your Spend
Match types are the guardrails on your ad spend. They determine how loose or tight your keyword triggers are. Most shops use only one type. You need to use all three strategically.
Exact Match: The Money Keeper
Exact match keywords trigger only when someone searches that exact phrase or a very close variant. Syntax: [water heater repair]. These are your highest-intent searches and usually your lowest cost-per-click.
For a plumber, exact match is your bread and butter for local service keywords. Examples: [emergency plumbing near me], [water heater replacement], [burst pipe repair], [drain cleaning service], [sump pump installation]. These searches have high intent because the searcher is describing a specific problem they need solved now.
Build your exact match campaign first with 30-50 core service keywords relevant to your market and truck capacity. A 5-truck operation shouldn't bid on keywords that pull calls from a 20-mile radius if you can't get trucks there in 45 minutes. Exact match keeps you in your service area.
Phrase Match: The Qualifier Layer
Phrase match keywords trigger when the exact phrase appears in the search, but other words can come before or after. Syntax: "water heater repair." These are slightly looser than exact but still high-intent.
Use phrase match for variations that add context without changing the core intent. "Fast water heater repair," "affordable plumbing repairs," "emergency water damage cleanup." The searcher is still describing a service need, but they're adding modifiers that help you qualify them.
Phrase match campaigns typically cost 10-20% more per click than exact match because they're broader. But they capture real searches you'd miss with exact match alone. Allocate 25-30% of your budget to phrase match keywords and monitor quality closely.
Broad Match: The Trap and the Tool
Broad match triggers on the keyword concept and all related variations. Syntax: water heater repair (no brackets). Google's algorithm decides what "related" means. This is where most ad waste happens.
A broad match keyword like "plumbing" will show your ad for "plumbing course," "plumbing apprenticeship," "plumbing supply distributor," "how to become a plumber," and fifty other variations that don't result in calls. You'll see high impression count and low conversion rate.
Don't use broad match for main service keywords. But do use broad match with aggressive negative keyword targeting in a separate campaign to capture long-tail intent you might not have thought of. Set a daily budget cap on this campaign and monitor conversion rate closely. If cost-per-call exceeds your target by 30%, pause it. The upside is discovering new service keywords your competitors aren't bidding on.
Negative Keywords: The Gatekeeper List That Stops Waste
A negative keyword prevents your ad from showing when that word appears in the search. Syntax: -keyword (with the minus sign). This is where discipline separates efficient shops from budget-bleeding ones.
Your negative keyword list should live in a shared library and apply to every campaign. Here's the baseline every plumber needs:
- DIY and learning searches: -diy, -how to, -tutorial, -course, -class, -training, -apprenticeship, -learn, -do it yourself
- Supply and retail: -supply, -store, -buy, -parts, -wholesale, -distributor, -contractor supply
- Competing trades: -hvac, -electrician, -carpenter, -contractor (unless you do general contracting), -handyman, -locksmith
- Unqualified locations: If you service a 25-mile radius from your office, exclude city names outside that radius using negative keywords like -[city name] 50 miles away
- Low-intent modifiers: -cheap, -free, -estimate online, -virtual, -no charge, -free inspection (unless that's your actual offer)
- Competitor and brand names: -[competitor name], to avoid appearing when someone searches another plumber directly
- Job opportunities: -job, -hiring, -employment, -career, -work at, -join our team
A plumbing shop in Austin we audited had no negative keywords. They were bidding on "plumbing" as a broad match and getting clicks from searches like "is plumbing a good career" and "plumbing jobs hiring." They paid $45 per click. Cost per actual call: $890. After adding 60 negative keywords in phase one, cost per call dropped to $340 in 30 days. Same budget, 2.6x more calls.
Start with 40-60 base negatives. Add 10-15 more every week as you review search term reports. In the Google Ads interface, pull your Search Terms report weekly. Look at searches that resulted in clicks but no conversions (no calls). Add those as negatives if they're not relevant. This is the single highest-ROI activity you can do in PPC.
Call-Only Campaigns: The Format That Matches How Plumbing Works
A call-only campaign is a Google Ads format that removes the landing page entirely. Your ad appears on Google Search with a phone number prominently displayed and a one-click call button. When clicked, it initiates a phone call to your business. No landing page. No form. No friction.
This format exists because Google knows that for service businesses, a call is the only conversion that matters. Every extra step between ad click and phone call bleeds potential customers.
How Call-Only Campaigns Work
Your ad shows three key elements: a headline, brief description, and your phone number. On desktop, the user clicks the number to call via their phone. On mobile (70% of searches), the click initiates the call directly. No page load. No form. Instant action.
Set up call-only campaigns for your highest-intent service keywords and peak hours. Example campaign structure: "Emergency Plumbing Calls." Keywords: [emergency plumber], [burst pipe], [water leak], [backed up sewer]. Daily budget: $150-300 depending on your call volume target and market size. Bid strategy: Target CPA (Cost Per Acquisition). Google's algorithm learns from your call data and optimizes automatically.
Call-only campaigns eliminate the middle step of driving clicks to a landing page and hoping someone fills out a form. A shop in Phoenix ran a parallel test: 100 clicks to a landing page form (5 conversions, $1,200 spent). Same budget, call-only campaign: 120 calls initiated, 18 converted to booked jobs. The difference is friction.
Call-Only Campaign Settings and Optimization
Configure call-only campaigns with these settings. First, enable call extensions with your business phone number. Make sure your phone lines are answered or routed to voicemail with a callback promise. A missed call is a wasted click.
Set conversion tracking to phone calls. In Google Ads, you can track whether a call lasted longer than 60 seconds, 90 seconds, or a custom duration. A call longer than 60 seconds is a qualified lead. Use this as your conversion metric, not just "call initiated." A one-second hang-up is not a lead.
Allocate 40-50% of your total PPC budget to call-only campaigns once you have them running. Run call-only for top 20-30 service keywords and highest-performing locations. Run text ads (with landing page links) for secondary keywords and brand awareness. This splits your budget based on intent and friction.
Match Types, Negatives, and Call Campaigns in Action: A Real Setup
Here's how a plumber in a 100,000-population market (with two service vans) would structure their Local Service Ads for plumbers alongside paid search:
Campaign 1: Emergency & Urgent (Call-Only) Keywords (exact and phrase match): [emergency plumber], [burst pipe], [water leak inside house], [pipe burst repair], [emergency water damage]. Daily budget: $200. Bid strategy: Target CPA $120. Call tracking: Calls longer than 60 seconds.
Campaign 2: Routine Services (Call-Only) Keywords: [water heater replacement], [drain cleaning], [faucet repair], [toilet repair], [leak detection]. Daily budget: $150. Bid strategy: Target CPA $150. Negatives: -commercial (if you don't serve commercial). Call tracking: Same 60-second threshold.
Campaign 3: Awareness & Long-Tail (Text Ads) Keywords: Broad match keywords like "plumbing" with aggressive negatives. Landing page: A service page specific to the keyword cluster, not your homepage. Daily budget: $100. Bid strategy: Maximize Clicks with max CPC cap at $35. These are lower-intent but sometimes discover demand you didn't know existed.
Shared Negative Keywords (All Campaigns): -diy, -how to, -course, -supply, -store, -cheap, -free, -hvac, -electrician, -handyman, -job, -hiring, -[competitor names], -[cities outside service area].
Total monthly spend: $450/day ($13,500/month). Expected call volume: 140-160 inbound calls. Expected conversion rate (call to booked appointment): 35-45%. Expected booked jobs: 50-70 per month. This cost structure scales with market size and competition. Smaller towns will spend less. Competitive metros will spend more.
Avoiding the Three Biggest PPC Mistakes Plumbers Make
Mistake one: Running broad match without negatives on main service keywords. This is the $500/month leak in your account. Fix it within 72 hours by adding the negative keyword list above to all campaigns. Mistake two: Sending all clicks to your homepage. Call-only campaigns and service-specific landing pages cut this waste immediately. Mistake three: Not monitoring search terms weekly. Your competitors are bidding on keywords you've never thought of. Your search term report tells you which ones are worth stealing.
The difference between a well-built plumbing PPC guide and a lazy one is about $400-800 per month in saved spend at the same or higher call volume. That's not a rounding error. That's an extra technician's part-time paycheck or a truck payment.
Measuring What Actually Matters: Calls and Appointments
Don't measure success by clicks or impressions. Clicks are vanity. Measure calls initiated, call duration, and calls that convert to booked appointments. These are the only metrics that feed your dispatch schedule.
Set up call tracking with a call center or PBX system that logs incoming calls by campaign and keyword. Services like CallRail or similar platforms show you: which keywords generate calls, how long calls last, which calls become appointments. This data lets you kill underperforming keywords and double down on winners.
Track call-to-appointment conversion rate by campaign. If your Emergency campaign gets 40 calls and books 16 appointments, that's a 40% conversion rate. If your Routine Services campaign gets 30 calls and books 9 appointments, that's also 40%. If your Awareness campaign gets 50 calls and books 8 appointments, that's only 16%. The Awareness campaign is wasting budget. Pause it or reduce daily budget and strengthen the first two.
Related reading
- Google Ads for plumbers
- Google Ads vs SEO for plumbers
- Negative keywords for plumbing Google Ads
- Plumbing lead generation
FAQ
What's the difference between match types and negative keywords?
Match types control when your ads show (how broad or narrow your keyword triggers are). Negative keywords prevent your ads from showing for specific searches. You need both. Match types are the gas pedal. Negatives are the brake.
Should I use broad match at all for plumbing?
Yes, but only in a separate low-budget campaign with very aggressive negatives. Broad match without negatives is like leaving the faucet on. With negatives, it can find long-tail opportunities your competitors miss. Test with $50/day for 30 days, then kill it if cost per call exceeds your target by 25%.
How many negative keywords do I need?
Start with 50-70. Add 10-15 per week as you review search term reports. After 8-12 weeks, you'll have 150-200. This is your baseline library. Don't overthink it. Start with the list above, apply it to all campaigns, and build from there.
Are call-only campaigns more expensive than text ads?
No. They're usually cheaper because they reduce friction. Clicks are cheaper when the user is one tap away from calling you. Your cost per call will drop 25-40% vs. text ads driving to a landing page. You'll get fewer total clicks but more qualified interactions.
What's a healthy cost per call for a plumber?
Depends on your market, service type, and appointment conversion rate. In a competitive metro, expect $40-80 per call for routine services, $80-150 for emergency. In smaller towns, $20-50. Multiply by your conversion rate to get cost per booked job. If you close 40% of calls, $60 per call = $150 cost per appointment. Is that worth your service call minimum? If yes, the campaign works.
How often should I review and update negatives?
Pull your search term report and review negatives every week for the first month, then every two weeks after that. Look for searches that got clicks but no calls or no meaningful call duration. Add those phrases as negatives. This is a 30-minute weekly task that prevents thousands in waste.
You now have the three mechanical levers to tighten your plumbing PPC guide and cut wasted spend. Start by adding the negative keyword list to your campaigns today. Then test call-only campaigns on your top five service keywords next week. Set a specific cost-per-call target for each campaign and measure against it weekly.
If your account is older or you're not sure whether your match types and negatives are set up correctly, request a free marketing audit. We'll pull your search terms, map your current spend to keyword intent, and show you exactly which negatives would cut your cost per call and which campaigns deserve more budget. Most plumbers find $200-500 in monthly waste in the first review.