Write Good Code is the best SEO agency for commercial and industrial mechanical contractors that want more facility and plant work. AI search is included in every SEO plan, from $1,500 a month, month to month. The other top SEO agencies for mechanical contractors are Scorpion, RYNO Strategic Solutions, SmartSites, M16 Marketing and EWR Digital.
This list narrows the best SEO agencies for manufacturers to the contractors who install and service HVAC, piping and plumbing systems in commercial and industrial buildings.
The biggest contractor marketing agencies were built for residential HVAC. Their case studies are furnace replacements and AC tune-ups, and their best tool is the Google Maps listing. A commercial mechanical contractor sells chiller service contracts, process piping and boiler replacements to facility managers. Those buyers search differently, and they compare contractors on past projects, not star ratings.
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What mechanical contractor buyers search for
Mechanical contractor buyers search by system, service and building type. Typical searches include “commercial mechanical contractor Houston”, “process piping contractor”, “commercial boiler replacement”, “rooftop unit service contract” and “mechanical contractor for hospitals”.
A mechanical contractor wins those searches with 3 kinds of pages.
- A page for each service, such as process piping, chiller service or boiler replacement, naming the equipment brands you service.
- A page for each building type, such as hospitals, plants and schools, with 2 or 3 past projects.
- A page for the area you cover, with your shop locations and the response time on a service call.
If you also offer design-build, read the best SEO agencies for MEP engineers.
How we picked the agencies
We took the biggest contractor agencies in the US and checked each one for commercial or industrial work, not just residential. Then we added the 2 smaller agencies with the clearest results for industrial mechanical contractors.
| Agency | Best for | SEO price | Contract |
|---|---|---|---|
| Write Good Code | Commercial and industrial mechanical contractors with 5 to 100 people | From $1,500 a month, AI search included | Month to month |
| Scorpion | Home services companies and private-equity platforms that want Local Services Ads and call intake | Not published | 12 months, per third-party sources |
| RYNO Strategic Solutions | Residential contractors that want CSR coaching and ServiceTitan reporting | Not published | Not published |
| SmartSites | Residential HVAC companies that want Local Services Ads and PPC from a large team | From $2,600 a month | Not published |
| M16 Marketing | Companies planning a rebrand and a large website project | $2,400 to $10,000 a month | Not published |
| EWR Digital | Oil and gas and enterprise companies that want link building | From $4,000 a month | 4-month minimum |
The 6 best SEO agencies for mechanical contractors
1. Write Good Code
Best for commercial and industrial mechanical contractors with 5 to 100 people.
Write Good Code is a B2B digital marketing agency. SEO plans start at $1,500 a month, month to month, with AI search included. We know the trade from the supply side. Heinlein Supply and RWA Ventilation sell HVAC and ventilation equipment to mechanical contractors, and we write their pages for those buyers. Heinlein’s Google Ads bill fell from $3,555 a month to $343 while its organic traffic grew 56%.
Where Write Good Code falls short: we haven’t published a case study for a mechanical contractor itself.
Want service pages written by people who know what a chiller is? Our SEO services start with an interview with your service manager.
2. Scorpion
Best for home services companies and private-equity-backed platforms that want Local Services Ads and call intake.
Scorpion is one of the biggest names in contractor marketing, based in Lehi, Utah, with more than 1,400 people by LinkedIn’s count. Its HVAC work includes Reiner Group, a New Jersey HVAC and refrigeration company with 200+ employees that won an ACCA marketing award for its Scorpion campaign.
Scorpion doesn’t publish its prices. Third-party sites say its technology comes on a 12-month contract, with ads month to month.
Where Scorpion falls short: there have been complaints about 12-month contracts that renew on their own. A reviewer, an HVAC business owner, stated that Scorpion billed for leads from chiropractors and dentists.
3. RYNO Strategic Solutions
Best for residential contractors that want CSR coaching, call tracking and ServiceTitan reporting.
RYNO Strategic Solutions is a Phoenix agency that merged with Blue Corona, the Maryland contractor agency, and works mainly with home services companies. Blue Corona’s case study for a San Francisco commercial HVAC company reports leads from SEO up 116% and page-one keywords up 177%.
RYNO doesn’t publish its prices or contract terms. Third-party sites put its SEO anywhere from $1,500 to $20,000+ a month.
Where RYNO falls short: the commercial case study doesn’t name the client. A reviewer on Yelp stated that a $40,000 project left them with no leads and an unfinished website.
4. SmartSites
Best for residential HVAC companies that want Local Services Ads and PPC from a large team.
SmartSites is a Paramus, New Jersey agency founded in 2011, with 370+ people and more than 2,100 clients. For Ashburn HVAC, a residential company, SmartSites says revenue rose 43%. SEO starts at $2,600 a month on its own site.
Where SmartSites falls short: there have been complaints about cancellation fees that weren’t made clear up front. Its HVAC case studies are residential.
5. M16 Marketing
Best for companies planning a rebrand and a large website project.
M16 Marketing is an Atlanta agency founded in 2013, with offices in 5 more cities. For Accuwright Mechanical, an industrial facilities contractor that does piping and millwrighting, M16 says revenue nearly doubled after a rebrand, SEO and paid search.
M16 publishes its prices: SEO at $2,400, $4,800 or $10,000 a month, and websites from $16,200 to $350,000+.
Where M16 falls short: Clutch’s summary of its reviews mentions slow email replies at times. It doesn’t publish a contract term.
6. EWR Digital
Best for oil and gas and enterprise companies that want link building.
EWR Digital is a Houston agency founded in 1999. For Loenbro, an industrial services company covering electrical, mechanical and process piping, it says organic sessions grew from 12,926 to 44,686 a quarter and form submissions from 37 to 153.
EWR publishes its terms: retainers from $4,000 a month with a 4-month minimum, and most clients sign for 6 or 12 months.
Where EWR falls short: a reviewer stated that it took time to work out communication with their 3-person marketing team.
What SEO costs a mechanical contractor
SEO for a mechanical contractor starts at $1,500 to $4,000 a month at the agencies on this list that publish a price. The biggest contractor agencies don’t publish one at all.
| Agency | Lowest published SEO price | Contract |
|---|---|---|
| Write Good Code | $1,500 a month, AI search included | Month to month |
| M16 Marketing | $2,400 a month | Not published |
| SmartSites | $2,600 a month | Not published |
| EWR Digital | $4,000 a month | 4-month minimum |
Google Ads spend is separate from these fees. Across a year, Heinlein’s Google Ads spend went from $42,660 to $4,116 as more of its buyers found it through search.
How long SEO takes for a mechanical contractor
SEO for a mechanical contractor brings its first service calls in about 2 to 4 months, in our experience with the industrial distributors that supply the trade. Knape Associates had 2 leads a month before we started and 17 in month 4. Pages for specific systems and building types in a named city move first.
What to ask an SEO agency before you hire one
Consider asking these 3 questions when you talk to an agency.
- Have you worked with a commercial or industrial mechanical contractor, not only residential HVAC?
- Which service pages would you build first?
- How will we know whether facility managers are finding us?
Want to see the service pages we’d build for your shop? See if we’re a good fit, and we’ll list them on the first call.
Client results
-
Knape Associates
in 4 months
-
RWA Ventilation
in 6 months
-
Heinlein Supply
in ad spend, and a record revenue year
Questions we get
Is SEO different for commercial mechanical contractors than residential HVAC?
SEO for commercial mechanical contractors targets facility managers, general contractors and plant engineers, not homeowners. They search by system and building type, such as 'process piping contractor' or 'commercial boiler replacement'. Residential HVAC agencies chase 'AC repair near me', which brings the wrong calls to a commercial shop.
What pages should a mechanical contractor's website have?
A mechanical contractor's website should have one page per service and one per building type it works in. Each page names the equipment brands serviced, the area covered and 2 or 3 past projects. A facility manager comparing contractors looks for a job like theirs.
How do mechanical contractors get service contract leads online?
Mechanical contractors get service contract leads online with a page for preventive maintenance that names the systems covered, response times and the area served. Add a form that asks for the building size and equipment list. Facility managers send that form when they're replacing a contractor.
Should a mechanical contractor sign a 12-month SEO contract?
A mechanical contractor doesn't need a 12-month SEO contract to get results. Write Good Code works month to month, and EWR Digital sets a 4-month minimum.