A typical Plumbing or HVAC website has only 5-6 pages (Home – About Us – Our Services – Coupons – Contact Us). That does not create a lot of indexation or placeholders on the major search engines. Most contractors provide a wide variety of other services including Drain Cleaning, Emergency Service, Bathroom Remodeling, AC Repair, and Furnace Installation, just to name a few. By building out the website and creating separate pages for each of these services (combined with city modifiers), the Plumbing or HVAC contractor can get listed on the search engines for each of those different keyword combinations. Here is an example:

Home – About – Coupons – Contact Us

Sub-pages for each service – Miami Emergency Plumber, Miami Emergency Heating and AC Expert, Miami Leak Detection, Miami AC Repair, Miami Drain Cleaning, Miami Furnace Installation, etc.
They often provide services in a large number of towns outside their primary city. In order to be found on the major search engines for EACH of those sub-cities, additional pages need to be created:

Sub-pages for each sub-city serviced – Kendall Plumber, Doral Plumber, Homestead Heating and Cooling Professional, etc.

Once the pages are built for each of your core services, each of the pages need to be optimized from an SEO perspective so that the search engines understand what the page is about and list you for those words. Here are some of the most important items that need to be taken care of for on-page search engine optimization:

• Unique title tag on each page
• H1 tag restating that title tag on each page
• Images named with primary keywords
• URL should contain page keyword
• Anchor text on each page and built into the footer
• XML Sitemap should be created and submitted to Google Webmaster Tools and Bing Webmaster Tools