Thermaline — HVAC Contractor Website Template (Astro + Tailwind)

Most HVAC templates are just a pretty homepage. Thermaline is a revenue engine.

Built for heating & cooling companies (and the freelancers who build sites for them), Thermaline ships the conversion features that actually win $7,000–$20,000 system replacements — and the recurring-revenue membership module no other HVAC template has.

👉 Live demo: https://thermaline-hvac-demo.vercel.app

What makes it different

• Comfort Club membership module — the industry's recurring-revenue engine, built into the website: three configurable plan tiers, a monthly/annual price toggle (pure CSS, zero JS), a benefits comparison table, and teaser strips that pitch the club on every service and city page. No other HVAC template ships this.
• Dual-path quote system — visitors self-sort before any fields appear: "I need a repair" gets a 30-second fast lane; "I want a new system" gets a 4-step estimate wizard. Every lead carries a path field so repair calls and high-ticket install leads split themselves in your inbox.
• Financing calculator — amount slider × term × your APR, live monthly payment with a no-JS fallback matrix. Makes a $12,000 system read as ~$203/mo.
• Seasonal switching — one config field flips the hero, service ordering, and emergency banner between cooling and heating season; an auto mode picks by the visitor's calendar month with zero layout shift.
• Local SEO city pages — six per-city landing pages with local climate pain points, city reviews, and HVACBusiness / Service / areaServed structured data that validates clean.
• Trust system — contractor license number in the header, NATE / EPA 608 credential badges, an equipment-brand dealer strip (text badges — no trademark landmines), rebate callouts, and review cards with a computed aggregate score.

Fast. Accessible. Verified.

• Lighthouse (mobile, live demo): 99 / 100 / 100 / 100
• LCP 1.1s · CLS 0 · ~4 KB JavaScript total (gzip)
• WCAG AA color system, zero serious axe violations, full keyboard support (wizard, slider, toggle included)
• 32 pages, all static — deploy free on Vercel, Netlify, or Cloudflare Pages

Rebrand in about 2 hours

Company info lives in one config file (name, phone, license number, season mode, financing terms, rebates, dealer brands); membership plans in a second. Content (services, cities, installations, reviews, FAQ, blog) is schema-validated Markdown/JSON. Two color schemes included — switch with one line.

What's included

• Full Astro 5 + Tailwind CSS 4 source (TypeScript, Content Collections)
• 32-page demo with realistic English HVAC copy — SEER2, Manual J, AFUE terminology done right, no lorem ipsum
• Comfort Club module, dual-path quote system, financing calculator, seasonal hero, installation gallery with filtering
• Formspree & Netlify Forms integrations (switch via config)
• Step-by-step docs: customization guide (incl. how lead splitting works) + deployment guide (Vercel / Netlify / Cloudflare)
• Licensed demo photography with full credits

Requirements

Node 20+, npm. No CMS, no database, no framework runtime — just fast HTML.

FAQ

• Do I need a server or CMS? No. Thermaline builds to pure static files. Content is Markdown/JSON; you can attach any git-based CMS later if you want one.
• Does the Comfort Club process payments? By design, no — it presents your plans and collects signups as tagged leads (your office bills members however it already does). Nothing to integrate, nothing to break.
• How do form submissions reach me? Point the config at a free Formspree form, or flip one flag for Netlify Forms. Both are documented step-by-step, and every quote lead arrives tagged repair vs. install.
• Can I use it for a client project? Yes — one license per project. Buy another license for the next client.
• Is it only for HVAC? It's optimized for heating & cooling (membership plans, seasonal switching, SEER2/financing copy), but adjacent home-services trades — plumbing, electrical — can rebrand it quickly.
• Updates? Bug fixes and improvements are delivered as free updates to the v1.x line through your download link.

License

One project per purchase. Modify freely, deploy commercially. Not for resale as a template.