Best AI quoting software for window installers in 2026

A homeowner wants a quote for 14 wood-frame double-hungs in a 1962 ranch. The lead carpenter has to figure rough opening sizes (most are out of square because the house has settled 3/4 of an inch toward the chimney), pick a U-factor that meets the local energy code, decide between full-frame and pocket installs, add lead-safe work practices for the original paint, and price labor at 90 minutes per window plus a half day of trim work. Doing that by hand takes 45 minutes back at the truck. AI quoting tools, used well, knock that down to 12 minutes and stop the worst of the underbidding. Used badly, they spit out a number that ignores the chimney lean and you eat $1,800 in extra labor.

What to look for in AI quoting tools if you run a window installation business

First, photo-to-measurement. A tech holds up a folding ruler against the window, snaps a phone photo, and the software pulls the rough opening dimensions within a quarter inch. Window sizing is unforgiving. A 24 by 36 quote becomes a 26 by 38 reality and your margin is gone. Second, manufacturer line items. Andersen 400 Series, Pella Lifestyle, Marvin Essential, Milgard Tuscany all have different lead times in 2026 (4 to 11 weeks) and different per-unit costs. The quoter should pull from a manufacturer price list you upload, not from a generic catalog. Third, lead-paint adders. Anything before 1978 triggers EPA RRP requirements, which add about $180 to $400 per window in labor and disposal. Fourth, financing integration. GreenSky and Synchrony approvals at the kitchen table close deals. Your quote tool needs the iframe or API. Fifth, scope-creep tracking. When the homeowner adds two transoms or wants the trim painted, the quote has to capture that as a change order with a signature, not buried in a notes field.

Top 5 picks for 2026

Jobber. Core $69/mo, Connect $169/mo, Grow $349/mo as of May 2026. Solid for replacement-window shops doing 4 to 25 jobs a month. The quote builder takes a CSV of your manufacturer line items, and the AI assist on the Grow tier can suggest pricing based on past won jobs. Drawback: photo-to-measurement is not in Jobber. You still get there with manual sizing or a third-party app paired through Zapier.

Housecall Pro. Basic $59/mo, Essentials $149/mo, Max $279/mo. The "Estimate Builder" got a real upgrade in the late 2025 release, with line items that calculate add-ons (capping, J-channel, full-frame vs pocket) on the fly. Mobile signature capture is fast. Drawback: HCP's manufacturer catalog is light on the higher-end lines like Marvin Signature Ultimate. You build those out yourself, which takes a weekend the first time.

ServiceTitan. Custom pricing, expect $295 to $398/user/mo plus a $3,000 to $8,000 implementation. The ServiceTitan Pricebook Pro module handles a 14-window quote with mixed sizes and finishes in under 10 minutes once it is set up. Best for shops with 12+ techs that also do siding or roofing. Drawback: overkill if windows are the only line of work and you do fewer than 30 jobs a month.

Calendly. Standard $12/user/mo, Teams $20/user/mo. Useful for the front-end "schedule a free in-home estimate" booking, with routing logic so commercial leads go to the sales manager and residential goes to the rep covering that ZIP code. Drawback: not a quoter at all. Pair it with one of the above.

HubSpot. Starter $20/user/mo, Professional $100/user/mo. Better for shops chasing larger commercial work, where a 200-window historic restoration quote is a 6-week sales cycle with multiple decision-makers. The quote tool in Sales Hub Pro handles approval workflows. Drawback: HubSpot does not know what a window is. You do all the line items yourself, and pricing math is straight arithmetic with no installer-specific intelligence.

What to avoid

Three mistakes I keep seeing in this category. First, trusting AI-suggested labor times for old houses. A 1920s bungalow with rope-and-pulley sashes is not a 90-minute install, no matter what the software says, because you will spend 20 minutes per window pulling the weights out of the wall pocket and another 15 dealing with the original plaster. Override the suggestion. Second, quoting without a measure visit on full-frame replacements. Pocket installs are forgiving. Full-frame is not. If your sales rep took a tape to the inside opening and the window has 5/4 brickmold, you are 1.5 inches short on the rough opening and the install will be ugly. Third, using stock manufacturer pricing without your dealer discount applied. Most window dealers run 30 to 45 percent off retail and your quote tool needs to bake that in or your margins look like the homeowner is getting screwed.

FAQ

Can the quote tool handle storm windows separately? Jobber and Housecall Pro let you create separate line items for storms, and Housecall Pro's bundle pricing lets you offer "buy 5 windows, get the storms 30% off." ServiceTitan handles this natively.

What about lead-safe work practices? None of the tools auto-flag pre-1978 homes. You add the RRP adder ($180 to $400 per window) as a manual line item. A few shops we know save it as a quote template called "Pre-78 RRP" and apply it with one click.

How accurate is photo-based sizing? Within 1/2 inch for openings under 4 feet, within 3/4 inch for picture windows over 5 feet. Not accurate enough to skip the final measure visit before ordering.

Do these integrate with Andersen/Pella ordering? Pella's eDealer portal has an API that Jobber and ServiceTitan can call. Andersen requires a manual line item export. Marvin and Milgard are manual everywhere.

What about commercial spec work? ServiceTitan or HubSpot. The other three are too consumer-focused for a 6-month commercial sales cycle.

If you run a 2-to-5 person residential shop doing 5 to 20 jobs a month, Housecall Pro hits the sweet spot. If you are larger or doing mixed trades, ServiceTitan pays for itself by month 6. If commercial is more than a third of revenue, HubSpot handles the sales cycle better. Skip the AI-flavored marketing and ask each vendor for a screen-share of one of your real quote scenarios before you sign.