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Home / Trades / Windows & Doors

WINDOWS & DOORS

You’re setting windows all day. It answers every quote.

The phone’s in the truck and every missed call is an $11,000 window job going to the next company. SubCall picks up every quote in 3 seconds, windows, entry doors, patio doors, or repair, and captures the scope.

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Live in under 5 minutes · Works with your existing number · No hardware · from $349/mo

QUOTE CAPTURED
0:48
Full window replacement
Scope12 windows, double-hung
Typevinyl, double-pane
Reasonenergy upgrade
Est~$11,000
Routed to estimator
site visit to measure booked

Quoted before you left the room.

WHY WINDOW QUOTES GO TO VOICEMAIL

You’re shimming a window into a rough opening. You can’t stop mid-set.

You finish at 2pm to seven missed calls, none with a voicemail. Two existing customers, one supplier, and four prospects: a homeowner with drafty windows wanting an energy upgrade, a property manager needing windows replaced across a 12-unit building, an agent needing a broken window and door fixed before a Friday listing, and a builder asking about windows and doors for two new homes. By 5pm, three already booked someone else. The 12-unit replacement alone was worth tens of thousands. Most window shops are lean crews with no office staff, and the phone rings in the truck.

The ticket ladder is wide. A single window runs $400 to $1,200 installed, and a full-house replacement of 15 to 25 windows runs $12,000 to $40,000 or more. Windows are a considered purchase too, so the homeowner with rising energy bills calls a few installers and books the one that answers and comes out to measure. Miss that call and the job is gone, along with the doors, the repairs, and the next replacement twenty years on.

$12–40k+

the full-house replacement that went straight to voicemail. Every captured customer is the job plus doors, repairs, and future replacements.

$11,000

a full replacement gone to the next company

$400–1,200

a single window replaced, installed

See what missed calls cost your business →

Job values: industry estimates.

HOW IT WORKS

Every quote captured. Every broken window dispatched. Every lead routed.

STEP 01

The call forwards. Nothing changes for the caller.

Your business line forwards to SubCall. No app, no hardware, no new number. Callers dial what they always have.

CALL FORWARDING
Your number
→
SubCall
No app · No hardware · Same number
STEP 02

It picks up in under 3 seconds.

Warm, in your business name. “Thanks for calling Anderson Windows & Doors, how can I help?” Even mid-set in a rough opening.

ON A CALL
0:03
Anderson Windows & Doors
“Thanks for calling, how can I help?”
STEP 03

It qualifies the job: replacement, new install, or repair.

Replacement windows, entry doors, patio doors, or a repair? How many windows and what type? Vinyl, wood, or fiberglass? Energy upgrade or storm damage? A drafty-home upgrade becomes a scheduled estimate. A 12-unit replacement routes commercial.

INTAKE · WINDOWS
Replacement, new install, or repair?
Window count and type?
Windows, entry, or patio doors?
Style chosen, or need help?
STEP 04

The job lands. The estimator gets a text.

Within seconds: name, address, window count, type, material, reason, timing, and category, plus whether a pane or the whole unit is broken on a repair call. The customer gets a confirmation.

→ ESTIMATOR
Window replacement · 12 units
Vinyl double-pane · energy · ~$11,000
Quote-ready · 0:48

CALL TRIAGE

It knows a repair from a full replacement.

Generic services treat every window call the same. SubCall runs different protocols for energy replacements, multi-unit jobs, pre-listing repairs, and new-construction bids.

PRIORITY→ estimator

Energy replacement

CALLER
“My windows are old and drafty and my energy bills are terrible. I want them all replaced.”
SUBCALL
“Great upgrade. Roughly how many windows, are they double-hung or casement, vinyl or wood, and single or double pane now? I’ll get an estimator out to measure and quote the savings.”
PRIORITY→ commercial

Property manager multi-unit

CALLER
“I manage a 12-unit building. I want to replace all the windows to cut energy costs.”
SUBCALL
“Sounds like a great job. Roughly how many units and windows each, are we matching or upgrading, and what’s the timeline? I’ll get our commercial lead on pricing.”
STANDARD→ scheduler

Pre-listing repair

CALLER
“I’m an agent. My listing goes up Friday and there’s a broken window and a sticking door. Fix this week?”
SUBCALL
“A window and door repair is quick to schedule. What’s broken, roughly the size, and is it glass or the frame? I’ll get someone scheduled this week.”
STANDARD→ new-construction

New construction bid

CALLER
“We’re a builder doing two homes in Westbrook. We need all the windows and exterior doors.”
SUBCALL
“Happy to bid. Roughly the window and door counts per home, the spec and style, your paint-ready timeline, and is this two homes or ongoing? I’ll get our new-construction lead on it.”

WHY WINDOW & DOOR PROS PICK SUBCALL

Over an answering service, or hiring.

SubCallAnswering serviceHiring
Answers 24/7 (evening calls)IncludedUpchargeRequires overtime
Knows window and door terminologyBuilt-inGeneric scriptMonths of training
Separates replacement / new install / repairSorts each typeNoInconsistent
Captures window count and typeStructured dataFree-form notesInconsistent
Multi-unit property-management qualifyingSpecialty intakeNoManual
New-construction builder qualifyingNew-build intakeNoInconsistent
Captures energy or damage reason for the bidTrained intakeNoInconsistent
Dispatches via SMSInstantNoManual
Monthly costFrom $349/mo (500 min)$400–900$3,500+ /mo
Set-up timeUnder 5 minutes3–5 daysWeeks

A $29–40B U.S. WINDOW & DOOR MARKET

A $29 to $40 billion window and door market, mostly owner-operators. The pros who answer win.

The U.S. windows and doors market runs $28.7 to $39.8 billion across 2024 and 2025 depending on how the category is drawn, growing 3.4 to 5.26% a year (GreenSky; Harvard JCHS 2025; Market Research Future). Globally it sits at $203 to $216 billion in 2025, heading toward $355 to $363 billion by 2035 (Global Market Insights; Mordor Intelligence; Market Research Future). The industry is fragmented behind a few nationals, and most operators are owner-on-the-tools shops where the owner is setting windows, not at a desk.

The demand mix favours replacement. U.S. residential demand splits roughly 45% new construction and 55% renovation and replacement (GreenSky 2025), and the replacement half is the faster-growing one: elevated borrowing costs have locked most homeowners into favourable mortgage rates, so discretionary money goes into upgrading the house rather than moving out of it. Measured a different way, residential work is 58 to 67% of the global windows and doors market against commercial (Mordor Intelligence; Grand View Research).

Material is where the quote gets specified. Vinyl holds about 44.2% of residential window replacements, followed by fiberglass at 15.7%, wood at 15.0%, clad wood at 10.7% and aluminum at 10.6% (HIRI). The ENERGY STAR Version 7.0 update is pushing U-factor requirements toward 0.22 in colder climates (Mordor Intelligence), which creates net-new replacement demand from homeowners chasing utility-rebate thresholds. The repair side is a business in its own right: the global door and window repair service segment alone runs $28.44 billion in 2025, heading to $36.19 billion by 2029 (The Business Research Company).

$29–40B

U.S. window & door market

55%

of U.S. residential demand is replacement

44.2%

of replacements are vinyl

Sources: GreenSky (2025); Harvard JCHS (2025); Market Research Future; Global Market Insights; Mordor Intelligence; Grand View Research; HIRI; The Business Research Company.

WINDOW & DOOR FAQ

A few questions, answered.

How does it qualify window and door leads?

It asks during intake whether it’s replacement windows, a new install, entry or patio doors, or a repair, the window count and type, the material (vinyl, wood, fiberglass), the reason (energy or storm damage), residential vs commercial vs new construction, and timing. The structured intake gives your estimator a quote-ready brief.

How does it handle a broken window?

A broken window is a security and weather problem, not a scheduling one, so it gets flagged for same-day attention. It captures the detail that decides the scope, roughly the size, whether it is single or double pane (most modern units need the whole sealed unit, not just glass), and whether the frame is damaged or only the glass, and it tells the caller they can tape plastic sheeting over the opening to keep the weather out until someone arrives.

Can it handle multi-unit property-management contracts?

Yes. It captures unit count, windows per unit, match-or-upgrade scope, and timeline, and routes the lead to your commercial estimator with quote-ready data.

How much does it cost for a window and door business?

From $349/month, including 500 minutes and 24/7/365 coverage. No after-hours upcharge. Compared to hiring a receptionist at $42,000+/year or a generic answering service at $400 to $900/month, it pays for itself with a single captured replacement job.

What window-and-door-specific questions does it ask?

Replacement, new install, doors, or repair, window count and type, material, reason (energy or storm), residential, commercial, or new construction, and timing.

Can it handle repairs differently than full replacements?

Yes. Broken windows and sticking doors get booked as quick repair appointments. Full replacements and new installs get routed for estimator measure visits, because a full-house quote needs an in-person measurement rather than a number over the phone.

Can it handle pre-listing and pre-closing deadlines?

Yes. Calls tied to a showing, a listing or a closing get time-sensitive routing. It captures the date and the specific fault, whether it is the track, the rollers or the lock on a patio door, so whoever turns up arrives inside the window with the right parts.

How long does setup take?

Under 5 minutes. A few questions about your trade, forward your number, and every service is running.

Does it handle new-construction subcontractor work?

Yes. It captures window and door counts per home, spec and style, paint-ready timeline, and home count, and routes the lead to your new-construction sales lead.

Does it replace my phone number?

No. Your existing business number stays the same. Calls forward to SubCall, and callers dial what they always have.

THE $11,000 WINDOW JOB ISN’T WAITING

Stop losing window quotes to voicemail.

Live in under 5 minutes. Works with your existing number. Cancel anytime.

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