Design HVAC Customer Info Website

I need a clean, responsive website that serves our existing HVAC customers first. The new build must make it effortless for them to find practical maintenance tips, review our current service plans with pricing, and reach support—whether by phone, email, or a prominently placed live-chat widget.

Interactive features are essential:
• Live chat that connects to our help-desk software
• An appointment-booking system that syncs with Google Calendar so customers can pick available slots in real time
• A testimonial section we can update ourselves to keep fresh reviews front-and-center

I’m flexible on the platform—WordPress, Webflow, or a lightweight custom stack—as long as everyday edits are simple for office staff. Performance matters: the site should load in under three seconds on mobile, follow SEO basics, and remain secure.

Deliverables
• Mobile-first, multi-page site (home, services, maintenance tips blog, plans & pricing, contact/support)
• Fully integrated chat, booking, and testimonial modules, tested end-to-end
• CMS access plus a short walkthrough video or PDF so my team can update content
• One revision cycle after the first draft
• Final deployment on our existing host with a brief hand-off document

Acceptance criteria
– PageSpeed Insights score above 85 on mobile
– All interactive elements route to the correct email/help-desk addresses
– Booking calendar displays live availability and confirms appointments automatically

Tell me which platform you recommend and how quickly you can have a draft ready so we can get this live for our customers.