Software Integration Guide for Window & Door Installation Companies

Ask which tools in a window & door stack "integrate" and the honest answer is: almost everything routes through your CRM, Google Workspace, or QuickBooks Online. Outside those three hubs, most tools don't talk to each other at all — which matters more in this trade than in a lot of small businesses, because the biggest transaction in the whole business, a financed installed sale, touches all three of them before it's actually booked as revenue.

The three hubs

Your CRM, Google Workspace, and QuickBooks Online are the three nodes almost everything else connects through.

Your CRM — Improveit 360 or Leap — connects directly to QuickBooks Online and GreenSky, and Improveit 360's own list adds Mailchimp on top of that; SalesRabbit, Samsara, and DocuSign all list a connection back to both CRMs. Google Workspace connects directly to 1Password, DocuSign, and Huntress — the productivity and security layer the rest of the office runs on. QuickBooks Online connects directly to Gusto, both CRMs, and Stripe — it's the finance cluster's hub, and Fleetio and Bill.com both point into it even though QuickBooks's own list doesn't name them back.

Where the CRM hub doesn't reach: GreenSky and the general ledger

GreenSky's own integration list names Improveit 360 and Leap — a financing approval flows straight into the deal record either way. It does not name QuickBooks Online. For a trade where financed sales are the majority of revenue, that's the single biggest gap in the whole map: once GreenSky approves and funds a project, someone still has to record that revenue in QuickBooks by hand, because the financing platform and the general ledger don't talk to each other directly. That's not a bug in either tool — it's just a connection that was never built — but it's exactly the kind of gap that turns into a bookkeeper's monthly close taking longer than it should.

Semrush and Mailchimp: two hops from the CRM, not one

Semrush's own integration list names only Mailchimp — it has no direct line into either CRM. That means a search-driven lead has to pass through Mailchimp before it can reach your pipeline at all. For an Improveit 360 shop, that's one hop and Mailchimp closes the loop automatically. For a Leap shop, it's two unconfirmed hops — Semrush to Mailchimp is fine, but Mailchimp's claimed connection to Leap isn't confirmed on Leap's own side, so an SEO-driven lead can stall exactly at the point where it's supposed to land in the sales pipeline.

The finance cluster runs on QuickBooks alone

Gusto, Stripe, Bill.com, and Fleetio all connect to QuickBooks Online, but none of them connect directly to either CRM — which is normal, since payroll, card processing, vendor bill-pay, and fleet maintenance have no reason to touch a sales pipeline. It does mean QuickBooks is the one place financed-sale revenue, payroll, and vendor bills are all supposed to reconcile together, fed in part by a GreenSky export that isn't automatic. If that export is manual, your bookkeeper is the integration, not the software.

Security tools protect the tablet, not the deal

1Password and Huntress connect to each other and to Google Workspace, not to the CRM or GreenSky directly. In practice, that means your password manager and endpoint detection cover the devices staff use to access the CRM and financing portal — they don't give you visibility inside the CRM's own access logs or GreenSky's approval history. DocuSign connects to Google Workspace and both CRMs, which makes it the one admin tool with real reach into the sales side; it's still a single-purpose tool, not a stack-wide integrator.

Run the free audit to see the full stack we'd build for your shop, with these integration gaps already factored into the recommendation — not discovered six months after you've signed.