HVAC Google Ads resource
Below is the negative-keyword list every HVAC Google Ads account should start with: 60-plus terms across six categories that block the wrong searches before they spend a dollar. Adding negatives is the cheapest single optimization in a typical account; it routinely cuts wasted spend by 15 to 40 percent in the first week. Below the list is the audit logic for finding waste specific to your account.
Quick answers
What negative keywords should every HVAC Google Ads account block? The minimum useful list is roughly 60 terms across six categories: jobs and careers (12 terms), DIY and how-to (10 terms), parts and equipment (8 terms), wrong trades (7 terms), free or low-fit intent (6 terms), and information-only searches (10 terms). Specific terms below. Most accounts also need account-specific negatives based on services not offered, but the 60-term starter list applies regardless.
Why negative keywords matter more on HVAC than most verticals. HVAC service queries cost $8 to $25 per click in competitive metros. Broad-match leakage to a single jobs query (hvac technician careers) can burn $30 in a day on clicks that have zero booking probability. Multiply across DIY queries, parts queries, and wrong-trade queries and the leakage compounds: 15 to 40 percent of pre-optimization spend on a typical mid-sized account, in our audit experience.
How often to review search terms. Weekly during the first 60 days, then monthly on cadence. New waste appears as match types loosen with bidder confidence, as seasons shift demand patterns, and as Google rolls out broad-match changes. The negative-keyword list is a living artifact, not a paste-once-and-forget setup.
The "shared list" question. Negatives can apply at the account, campaign, or shared-list level. Account-wide negatives belong on a shared list (most accounts call it "Account Wide" or similar). Campaign-specific negatives belong on the campaign. Mixing the two without discipline produces a tracking nightmare in 6 months when nobody remembers which list a term lives on.
What to block
The 60-plus starter list. Copy-pasteable. Apply to a shared "Account Wide" list at the account level. Numbers in parentheses are the typical impressions-to-block range we see in audit data.
hvac jobs, hvac careers, hvac technician, hvac apprenticeship, hvac salary, hvac school, hvac training, hvac certification, hvac hiring, hvac employment, hvac trainee, hvac journeyman. These searches want employment or training. Block account-wide.how to fix hvac, diy hvac repair, diy ac repair, diy furnace repair, replace ac capacitor yourself, troubleshoot ac, troubleshoot furnace, youtube hvac repair, hvac manual, hvac repair guide. These searches want instructions, not a contractor.ac capacitor, furnace parts, ac compressor wholesale, used hvac equipment, wholesale hvac, portable air conditioner, window air conditioner, mini split for sale. These can burn budget when the business sells installed service. Review carefully if the business sells DIY parts as a side line.plumber, drain cleaning, appliance repair, electrician, auto ac repair, rv ac repair, marine hvac. Adjacent trades. Some accounts service one or two of these (some HVAC contractors do plumbing); review service list before blocking.free ac repair, free hvac estimate, cheap hvac, cheapest furnace, coupon hvac, discount hvac. "Free estimate" is often a real lead intent and should NOT be blanket-blocked; "free repair" is almost always not a serviceable lead.hvac meaning, what is hvac, seer rating explained, btu calculator, what is a heat pump, how does ac work, hvac vs heat pump, mini split vs central air, hvac history, hvac school cost. These are research-mode queries; block from service-spend campaigns. Useful targets for organic content if the business has a content strategy.How I use this
The starter list above blocks the obvious waste. The next 30 to 60 percent of waste hides in account-specific search terms that nobody added negatives for, and you can only see it by reading the search terms report.
The audit pulls 90 days of search terms from the Google Ads account and groups by intent. The patterns we look for, in priority order:
- Wrong-service queries: the account's serving "AC repair" but the search term was "drain cleaning Peabody," and the broad-match logic decided that was close enough. Wrong-service leakage usually accounts for the biggest single chunk of post-starter-list waste. - Geographic mismatch: the account targets the Boston North Shore but search terms include "AC repair Worcester" or "AC repair NYC." Either the geo targeting is too loose, or location-of-presence vs. location-of-interest is misconfigured. - Off-hours emergency queries: "no heat 11pm" search terms generating clicks but the business doesn't run after-hours. Different problem than negative keywords (it's an ad-schedule problem) but surfaces in the same review. - Brand mismatch: search terms include other companies' brand names. Either the account is bidding on competitors (intentional but should be flagged) or broad-match is leaking. - Information-mode queries: research-intent terms that didn't make the starter list because they're vertical-specific. - Below-target lead-quality search terms: the search term DID become a lead, but the lead was a price shopper or the wrong job size. Block the search term, not just the bad lead.
That last one is the highest-leverage. Every account has search terms that produce calls or forms but not booked work. Pulling those out drops cost-per-booked-job materially without touching anything else.
Related pages
Negative keywords are one part of account control. They matter most when they connect to service strategy, tracking quality, and the management cadence.
Money page
The HVAC vertical page shows the broader paid-search playbook: service taxonomy, seasonal demand, common account findings, tracking, and audit-first management.
Service
The Google Ads management service explains the $500/month flat model, the audit-first buying path, and the ongoing account work.
Capability
Keyword targeting is the capability behind the list: matching services, towns, modifiers, negatives, and search-term evidence to the actual business.
Resource
Emergency HVAC campaigns need even tighter query control because urgent clicks are expensive and call-first. Use this with the negative keyword buckets.
Resource
The audit checklist shows where negative keywords fit inside the broader account review.
Resource
The cost guide explains why wasted searches make HVAC clicks feel more expensive than they need to be.
Send the domain. I will check the account, search terms, negatives, tracking, and conversion path. If the account is leaking spend, the audit will show where.
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