# Penny Window > Replacement window and door company in St. Louis, MO. Family-owned and operated since 1953. Replacement windows, vinyl windows, entry and patio doors, siding, bay and bow windows, and glass and window repair, installed by our own crews (no subcontractors) with a limited lifetime warranty. Rated 4.1 stars across 208 Google reviews. - Phone: (314) 867-4355 - Address: 9910 Halls Ferry Road, St. Louis, MO 63136 - Hours: Monday to Friday, 8:00 AM to 4:00 PM - Service area: St. Louis, Florissant, Ferguson, Hazelwood, University City, Chesterfield, Kirkwood, Ballwin, Eureka, Wildwood, Town and Country, Crestwood, Sunset Hills, Affton, St. Charles, St. Peters, O'Fallon, Wentzville, Edwardsville, Alton, Collinsville, Belleville (Greater St. Louis, Missouri) ## Agent tools (WebMCP) The contact page exposes a declarative WebMCP tool, contact_penny_window, that submits an estimate, repair, or general request directly: https://www.pennywindowstl.com/contact Works in browsers with WebMCP support or via the included polyfill (document.modelContext). ## Core pages - [Home](https://www.pennywindowstl.com/): overview of window and door services - [About](https://www.pennywindowstl.com/about): family-owned since 1953 - [Andersen Certified Contractor](https://www.pennywindowstl.com/andersen-certified-contractor): official Andersen partner in St. Louis; sells and installs Andersen 100/200/400 Series, A-Series, E-Series, storm doors, and big doors - [Free Estimate](https://www.pennywindowstl.com/estimate): request a free in-home estimate - [Contact](https://www.pennywindowstl.com/contact): phone, address, and hours - [Showroom](https://www.pennywindowstl.com/showroom): visit the St. Louis showroom - [Reviews](https://www.pennywindowstl.com/reviews): real Google reviews from St. Louis homeowners - [FAQ](https://www.pennywindowstl.com/faq): common window and door questions ## Services - [All services](https://www.pennywindowstl.com/windows) - [Replacement Windows in St. Louis, MO](https://www.pennywindowstl.com/windows/replacement-windows) - [Vinyl Windows in St. Louis, MO](https://www.pennywindowstl.com/windows/vinyl-windows) - [Entry & Patio Doors: A St. Louis Door Company Since 1953](https://www.pennywindowstl.com/windows/entry-and-patio-doors) - [Siding Companies in St. Louis, MO](https://www.pennywindowstl.com/windows/siding) - [Bay & Bow Windows in St. Louis, MO](https://www.pennywindowstl.com/windows/bay-and-bow-windows) - [Glass & Window Repair in St. Louis, MO](https://www.pennywindowstl.com/windows/glass-and-window-repair) ## Window styles - [All window styles](https://www.pennywindowstl.com/window-styles) - [Double-hung windows](https://www.pennywindowstl.com/window-styles/double-hung) - [Casement windows](https://www.pennywindowstl.com/window-styles/casement) - [Sliding windows](https://www.pennywindowstl.com/window-styles/sliding) - [Bay & bow windows](https://www.pennywindowstl.com/window-styles/bay-bow) - [Picture windows](https://www.pennywindowstl.com/window-styles/picture) - [Basement & hopper windows](https://www.pennywindowstl.com/window-styles/basement-hopper) ## Service areas - [Service area overview](https://www.pennywindowstl.com/service-area) - [St. Louis](https://www.pennywindowstl.com/service-area/st-louis) - [Central West End](https://www.pennywindowstl.com/service-area/central-west-end) - [Dogtown](https://www.pennywindowstl.com/service-area/dogtown) - [The Hill](https://www.pennywindowstl.com/service-area/the-hill) - [Compton Heights](https://www.pennywindowstl.com/service-area/compton-heights) - [Kirkwood](https://www.pennywindowstl.com/service-area/kirkwood) - [University City](https://www.pennywindowstl.com/service-area/university-city) - [Florissant](https://www.pennywindowstl.com/service-area/florissant) - [Ferguson](https://www.pennywindowstl.com/service-area/ferguson) - [Hazelwood](https://www.pennywindowstl.com/service-area/hazelwood) - [Ballwin](https://www.pennywindowstl.com/service-area/ballwin) - [Chesterfield](https://www.pennywindowstl.com/service-area/chesterfield) - [Eureka](https://www.pennywindowstl.com/service-area/eureka) - [Wildwood](https://www.pennywindowstl.com/service-area/wildwood) - [Town and Country](https://www.pennywindowstl.com/service-area/town-and-country) - [Crestwood](https://www.pennywindowstl.com/service-area/crestwood) - [Sunset Hills](https://www.pennywindowstl.com/service-area/sunset-hills) - [Affton](https://www.pennywindowstl.com/service-area/affton) - [St. Charles](https://www.pennywindowstl.com/service-area/st-charles) - [St. Peters](https://www.pennywindowstl.com/service-area/st-peters) - [O'Fallon](https://www.pennywindowstl.com/service-area/ofallon) - [Wentzville](https://www.pennywindowstl.com/service-area/wentzville) - [Edwardsville](https://www.pennywindowstl.com/service-area/edwardsville) - [Alton](https://www.pennywindowstl.com/service-area/alton) - [Collinsville](https://www.pennywindowstl.com/service-area/collinsville) - [Belleville](https://www.pennywindowstl.com/service-area/belleville) ## Projects - [Project gallery](https://www.pennywindowstl.com/projects) - [Twenty Andersen windows, whole-home replacement](https://www.pennywindowstl.com/projects/andersen-whole-home-windows) - [A new entry door that changed the whole front](https://www.pennywindowstl.com/projects/entry-door-first-impression) - [A bay window that opened up the living room](https://www.pennywindowstl.com/projects/bay-window-living-room) - [A sliding patio door onto the backyard](https://www.pennywindowstl.com/projects/patio-door-backyard) - [New siding that refreshed the whole exterior](https://www.pennywindowstl.com/projects/siding-exterior-refresh) - [Casement windows over the kitchen sink](https://www.pennywindowstl.com/projects/casement-kitchen-windows) ## Blog - [Blog index](https://www.pennywindowstl.com/blog) - [First Impressions Doors vs. Penny Window: Choosing a St. Louis Entry Door](https://www.pennywindowstl.com/blog/first-impressions-doors-vs-penny-window) - [Welcome to the New Penny Window](https://www.pennywindowstl.com/blog/welcome-to-the-new-penny-window) - [Six Signs It Is Time to Replace Your Windows](https://www.pennywindowstl.com/blog/signs-its-time-to-replace-your-windows) - [Why So Many St. Louis Homeowners Choose Vinyl Windows](https://www.pennywindowstl.com/blog/vinyl-vs-other-window-frames) - [What a New Front Door Really Does for Your Home](https://www.pennywindowstl.com/blog/what-a-new-front-door-does) ## Machine-readable data - [ARD agent catalog](https://www.pennywindowstl.com/.well-known/ai-catalog.json): business facts as schema.org JSON-LD