Quick Answer

Negative keywords prevent your ads from showing on irrelevant searches, protecting your budget from wasted clicks Every home services campaign needs a universal negative list plus a trade-specific list Universal negatives include: DIY, how to, free, jobs, careers, school, training, certification, YouTube, Reddit Trade-specific negatives include supplier terms, equipment brands, job/career terms, and DIY product searches Review your Search Terms report weekly for the first 90 days to find negatives your list missed Table of Contents What are negative keywords and why do they matter for home services? What universal negative keywords should every home services campaign have? What are the best negative keywords for plumbing campaigns? What negative keywords do HVAC campaigns need? What negatives should roofing, electrical, and landscaping campaigns use? How do you find new negative keywords using the Search Terms report? How much money can negative keywords save? FAQ What Are Negative Keywords and Why Do They Matter for Home Services? A negative keyword is a word or phrase you add to a Google Ads campaign to prevent your ad from showing when that term is part of a search. If you add "DIY" as a negative, someone searching "DIY HVAC repair" will not see your ad.

Home services businesses have a structural negative keyword problem. The trades all involve products, education, employment, and DIY culture around them. A search for "plumber" could come from someone who needs to hire a plumber, someone looking for a job as a plumber, a student in plumbing school, or someone watching a YouTube video about fixing their own pipes.

Google Ads broad match and phrase match types, which most home services campaigns use for coverage, capture all of those searches unless you tell them not to. Every wasted click costs the same whether it comes from someone with a burst pipe or someone looking for a trade school.

What negative keywords protect:

Budget from irrelevant clicks Quality Score by improving CTR on relevant searches Lead quality by filtering out non-buyers before they click ROAS by making every dollar work on searches with actual intent

The investment in building a solid negative keyword list is one of the highest-ROI activities in Google Ads management. It is not exciting, but it directly increases the percentage of your spend that turns into leads.

For a broader picture of Google Ads strategy for home services businesses, see our Google Ads for Home Services guide. What Universal Negative Keywords Should Every Home Services Campaign Have? These negatives apply to every trade. Add them as a shared negative keyword list in Google Ads and apply to all campaigns.

Job and career terms:

jobs, job, careers, career, hiring, employment, work salary, pay, wage, compensation, benefits apprentice, apprenticeship technician jobs (as a phrase) resume, application, apply

DIY and how-to terms:

DIY, do it yourself, how to, how do I, step by step tutorial, guide, instructions fix it yourself, repair yourself

Educational terms:

school, training, certification, certificate, license course, class, learn, learning, become a exam, test, study, textbook

Free and low-cost signals:

free, cheap, discount, coupon, promo code free estimate (only exclude if you do NOT offer free estimates)

Research and media terms:

YouTube, Reddit, forum, video, wiki, Wikipedia review, reviews (use with caution if you want to exclude review searches)

Supply and wholesale terms:

supply, supplies, wholesale, distributor, parts buy, price list, catalog, supplier

Location exclusions: If you only serve certain areas, exclude neighboring city names, state names outside your service area, and generic location terms like "nationwide" or "online."

Load all of these into a shared negative list named "Universal Home Services Negatives" and apply it to every campaign on the account. What Are the Best Negative Keywords for Plumbing Campaigns? On top of the universal list, plumbing campaigns need trade-specific negatives to prevent showing on equipment purchases, supply searches, and non-service intent.

Product and supply terms:

pipe, pipes, copper pipe, PVC pipe, pipe fittings faucet replacement, toilet replacement (if you want install-intent only) drain cleaner, Drano, Liquid-Plumr, plunger water heater (if running separate water heater campaign) garbage disposal (same logic)

Brand and manufacturer terms (if not what you install):

Moen, Kohler, Delta, American Standard, Toto Rinnai, Navien, Bradford White, Rheem (water heater brands)

DIY product searches:

plumbing tape, Teflon tape, plumber's putty, pipe sealant plumbing kit, repair kit toilet parts, flapper, fill valve

Non-commercial intent:

plumbing code, plumbing diagram, plumbing schematic plumbing calculator, pipe sizing plumbing history, plumbing museum

Career and education (trade-specific):

plumbing school, plumbing license exam, journeyman plumber exam plumbing apprenticeship program

Review these monthly and add terms from your Search Terms report that clearly do not lead to service calls. What Negative Keywords Do HVAC Campaigns Need? HVAC campaigns have a higher volume of equipment and parts searches than most trades, plus a large category of DIY maintenance content that consumes significant impression share.

Equipment and parts terms:

thermostat (if not installed by your company), Nest thermostat, Ecobee HVAC filter, air filter, furnace filter, 1-inch filter, 16×25 refrigerant, Freon, R-22, R-410A (if not a refrigerant seller) capacitor, contactor, blower motor (parts searches) ductwork, flex duct, rigid duct (if not a duct installer)

Brand/equipment purchase searches:

Carrier, Trane, Lennox, Goodman, Rheem, American Standard (when followed by "price," "buy," "unit") mini split, ductless (if separate campaign)

DIY maintenance terms:

how to change HVAC filter, how to clean condenser coils HVAC maintenance checklist, AC tune up yourself

Building and construction (not service calls):

HVAC installation new construction HVAC design, load calculation, Manual J commercial HVAC (if residential only)

Seasonal terms (if applicable):

furnace cleaning YouTube, AC charging video

HVAC campaigns also benefit from adding negative keywords for the off-season trade. If you run heating ads in winter, add cooling terms to avoid impression dilution. In summer, add heating terms. What Negatives Should Roofing, Electrical, and Landscaping Campaigns Use? Roofing:

roofing materials, roofing shingles, shingle prices, metal roofing panels roofing nails, roofing tar, roofing underlayment GAF, CertainTeed, Owens Corning (manufacturer names) storm chaser (negative if you want reputation protection) roof pitch, roof framing, rafter calculator roofing contractor insurance (employment related)

Electrical:

electrical supply, wire, breaker (without service context) Leviton, Lutron, Square D, Siemens (manufacturer names unless installing) electrical panel price, breaker box cost (sometimes want these, sometimes not) electrician tools, voltage tester, multimeter DIY electrical, home wiring guide electrical code, NEC code

Landscaping:

landscaping rocks, mulch, topsoil (supply purchases) lawn mower, garden tools, landscaping equipment seed, grass seed, fertilizer (unless you sell product) landscaping ideas, landscaping pictures, landscaping design software plant nursery, garden center

For each trade, the principle is the same: identify what people buy or research that is adjacent to your service but not a hiring intent. Those are your negatives.

If you want help building and managing a Google Ads account that is actually optimized for lead generation, Volado Labs runs campaigns for home services businesses. How Do You Find New Negative Keywords Using the Search Terms Report? The Search Terms report is the most valuable ongoing source of negative keywords. It shows the actual searches that triggered your ads and resulted in clicks.

How to access it: In Google Ads, go to Campaigns, then click Keywords in the left menu. Select "Search terms" from the submenu.

What to look for: Sort by cost or clicks. Look at every search term that spent money. Ask one question: would someone searching this phrase ever call my business to hire us? If no, add it as a negative.

Review cadence:

Weekly for the first 90 days of a new campaign Monthly after the campaign is mature After any significant match type or bid changes

How to add negatives efficiently: Select the irrelevant search terms directly in the report and click "Add as negative keyword." Choose the right level: campaign-level for terms specific to one campaign, account-level (via shared list) for universal terms.

Patterns to watch for:

Geographic terms outside your service area Competitor brand names (add if you do not want to run competitor targeting) Seasonal or emergency terms that do not match your availability Industry slang that searchers use differently than you expect

The Search Terms report review is a 15-minute weekly task that can recover hundreds of dollars in wasted spend per month on mid-size home services accounts. How Much Money Can Negative Keywords Save? On accounts with no negative keywords, wasted spend typically runs 20-40 percent of total budget. For a home services business spending $3,000 per month on Google Ads, that is $600-$1,200 in clicks that will never convert.

After implementing a solid universal and trade-specific negative list, most accounts see:

Wasted spend drop to 10-15 percent CTR improve (because the remaining impressions are more relevant) Quality Score improve on core keywords Cost per lead decrease even without a budget change

The financial impact compounds. Better Quality Scores lead to lower cost-per-click on the searches that matter. Better CTR tells Google the ad is relevant. Better conversion rates follow because the traffic is more qualified.

For a $3,000/month account, a well-managed negative keyword list typically recovers $400-800 per month in previously wasted spend. Applied to buying more of the keywords that convert, that is meaningful.

See our complete guide to Google Ads for Home Services for the full account structure strategy beyond negative keywords. FAQ How many negative keywords should a home services campaign have? A properly built account typically has 150-400 negative keywords across universal and campaign-specific lists. There is no ceiling. More precise negatives mean better targeting. The important thing is that every negative you add should have a clear reason: it is a search that will not convert.

Should I add competitor names as negative keywords? That depends on your strategy. If you are not running competitor campaigns (ads targeting competitors' branded searches), adding their names as negatives prevents accidental impressions. If you want to target competitor searches, keep them positive. Most home services businesses benefit from keeping competitor names off the negative list so they can capture comparison shoppers.

What is the difference between negative broad match, phrase match, and exact match? Negative broad match blocks any search containing those words in any order. Negative phrase match blocks searches containing that exact phrase. Negative exact match only blocks that precise search. Use negative broad match for DIY/jobs/free. Use negative phrase match for specific phrases like "how to fix" or "technician salary." Use negative exact match sparingly.

Can negative keywords hurt my campaigns? Yes, if added incorrectly. Over-blocking can cut legitimate traffic. For example, adding "cheap" as a negative might exclude someone searching "cheap plumber near me" who has genuine hire intent. Review each negative before adding and consider whether there is any buyer intent in the search.

How do I find negative keywords without running ads first? Use Google's Keyword Planner to see search volume for related terms, then filter for anything that looks like DIY, job, supply, or educational intent. Also search Google manually for your main keywords and look at the "Related searches" at the bottom of results, many of those will suggest negatives.