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Enter­prise-Grade Craft CMS: How Thornton & Grooms Built a Website for 85 Years of Growth

Thornton & Grooms needed a website that matched its reputation, and a standard WordPress build wasn’t going to cut it. The Farmington Hills, Michigan, HVAC and plumbing company has been serving Metro Detroit since 1937. After racking up nearly 90 years of earned trust, more than 10,000 mainte­nance plan members, and an average rating of 4.9 across 15,600+ reviews, a website built on templates and plugins couldn’t carry that weight.

What Thornton & Grooms needed was an enter­prise website for plumbing and HVAC, one engineered to convert visitors, scale with growth, and run cleanly across dozens of service pages, city pages, and a content-rich blog. That’s why Rocket Media built its site on Craft CMS. Learn more about:

Here’s what that decision looks like in practice and why it matters for home service contractors running serious operations.

Key Takeaways:

  • Craft CMS is built for complexity. Unlike WordPress, it’s engineered from the ground up for custom content struc­tures, making it a strong fit for HVAC and plumbing companies managing dozens of service and city pages.
  • Page speed directly affects revenue. HVAC and plumbing websites convert at 15%+ when they’re fast and friction-free. Slow sites don’t just rank lower. They lose jobs to competitors.
  • Enter­prise doesn’t require enter­prise size. Thornton & Grooms is a regional home services company, not a Fortune 500. But their opera­tional complexity (multiple service lines, a 10,000-member mainte­nance program, and coverage across three Michigan counties) requires enter­prise-grade infrastructure.
  • Content management indepen­dence matters. A website that requires a developer for every update is a liability. Craft’s intuitive editor gives marketing and opera­tions teams the control they need to keep content current.
  • Integration is the new compet­itive edge. Connecting your website to sched­uling, CRM, and review platforms creates a seamless customer experience that generic WordPress sites can’t replicate at scale.

Your Website Should Work as Hard as Your Technicians

Most home service websites were built for where you were, not where you’re going. If your site is straining under the weight of your service mix, your markets, or your lead volume, it’s time to talk about what an enter­prise-grade website built for growth actually looks like.

When Home Services Companies Outgrow WordPress

Most HVAC and plumbing contractors start their digital life on WordPress. It’s acces­sible, affordable, and effective during the early years. But growth intro­duces friction.

For a company like Thornton & Grooms, serving Oakland, Wayne, and Washtenaw Counties across dozens of cities and neigh­bor­hoods, the website must support a serious content archi­tecture. There are service pages for heating, cooling, plumbing, drains, and electrical; city-specific landing pages for each market; a blog covering every­thing from frozen pipe prevention to furnace replacement timelines; and integra­tions with sched­uling and CRM tools.

At that scale, WordPress plugins multiply, page speed degrades, and security vulner­a­bil­ities compound. Rocket Media’s own research shows that for contractors operating at the $3M+ revenue threshold, WordPress failures can run $50,000 – $150,000 per incident. The risk calculus changes.

Why Craft CMS for HVAC Companies

Craft CMS is a content management platform built for custom, high-perfor­mance websites. Unlike WordPress, it doesn’t rely on a patchwork of third-party plugins to deliver core function­ality. Devel­opers build the structure from scratch, which means no unnec­essary code, no plugin conflicts, and no security baggage from thousands of unused features.

For HVAC contractor websites, that archi­tec­tural disci­pline pays dividends in three areas:

  • Page speed and conver­sions. Industry conversion data shows HVAC websites convert at 15.11% and plumbing at 15.61% — far above the 3.68% cross-industry average. But those numbers depend on fast load times. Craft’s built-in caching and clean codebase deliver perfor­mance that generic themes can’t match.
  • SEO and struc­tured data. Craft gives devel­opers full control over HTML structure, URL patterns, and schema markup. For a company managing hundreds of pages across multiple service categories and cities, that control trans­lates to search rankings. Rocket Media’s Craft imple­men­ta­tions are built with schema markup depth that helps AI search systems accurately surface client pages — a growing priority as voice and AI-generated search results reshape local discovery.
  • Content management at scale. Thornton & Grooms’ team needs to update seasonal promo­tions, add blog posts, manage city pages, and keep service details up to date without calling a developer every time. Craft’s control panel is designed for exactly this. It’s intuitive enough for non-technical editors, but struc­tured enough to prevent content errors.

What Enter­prise Actually Means for a Home Service Website

Enter­prise” gets thrown around loosely in web devel­opment. For a plumbing and HVAC company, it means something specific: a website engineered to handle real opera­tional complexity without falling apart.

For Thornton & Grooms, that meant building a site archi­tecture that supports their full-service breadth of HVAC, plumbing, drains, and electrical, alongside a mainte­nance membership program, a robust review ecosystem, and service booking integra­tions. It also meant building for acces­si­bility and mobile perfor­mance from the foundation up, not as retro­fitted afterthoughts.

Craft’s API flexi­bility also enables the integra­tions modern home service companies need: ServiceTitan, HubSpot, and sched­uling platforms can connect directly to the website, so leads flow into opera­tional systems without manual data entry. For a company handling hundreds of service calls per week across Metro Detroit, that automation matters.

See What the Right Website Platform Can Do for Your Business

Craft CMS isn’t for every contractor, but for estab­lished home service companies doing serious volume, it changes what’s possible. We’ll walk you through exactly what we’d build for your market and why.

Author

Ben Kalkman

CEO / Founder

Ben Kalkman is the CEO, founder, and owner of Rocket Media. When he has downtime from running a successful company, being the father to 9 kids, running half marathons, and purchasing every new Apple product that comes to market… eh who are we kidding, Ben has no downtime.

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