Maryland window installation
Custom-fit windows, measured by the family that installs them.
Standard sizes or full custom, in the styles and glass packages that make sense for Maryland weather. Our own crew, every job. Never subcontracted.
How to tell your windows are done.
Not every old window needs replacing. These are the ones that do:
- You can feel air move with the window closed and locked
- The glass has fogged between the panes — the seal has failed and can't be repaired
- It takes two hands and a shoulder to open, or it won't stay up
- The frame is soft to the touch, or paint won't hold anymore
- The room is noticeably colder or hotter than the rest of the house
If you're not sure, we'll tell you. Sometimes the answer is six windows, not fourteen.
What new windows actually change.
Your heating and cooling bill
The U.S. Department of Energy estimates that heat gain and loss through windows accounts for 25–30% of residential heating and cooling energy use. Replacing single-pane windows with ENERGY STAR certified units lowers household energy bills by an average of up to 13% nationwide. If you already have double-pane, the gain is smaller — and we'll tell you that before you spend the money.
The room you've been avoiding
In winter, the cold inside surface of an inefficient window pulls heat away from your body. That's why you can feel chilly in a sweater with the thermostat at 70. Warmer interior glass means you get the whole room back.
Noise from the road
Multi-pane assemblies cut outside noise noticeably. Homeowners on busy roads usually mention this before they mention the bill.
Fading furniture and floors
Low-E coatings block most of the ultraviolet light that fades fabric, wood, and flooring near sun-facing windows. We'll show you the exact figure on the spec sheet for the glass package you choose — it varies by product.
How the house shows when you sell
New windows read as well-maintained to buyers, and they remove a common inspection objection: failed seals and foggy glass. Industry resale data generally puts window replacement in the 65–75% cost-recouped range nationally.
Anyone telling you windows return more than they cost is selling, not reporting.
Window replacements, before and after
You don't have to figure this out alone.
Double-hung, casement, slider, bay, bow, garden, specialty. Grid patterns. Glass packages. Interior and exterior colors.
Most people don't know what they want until they see the options laid out next to their actual house. That's what the estimate visit is for.
We'll walk through what works for your rooms, your sun exposure, and your budget — and we won't push you toward the expensive one because it's the expensive one.
Own a home built before 1978?
Window work can disturb old paint. B.T. Window & Doors is EPA Lead-Safe Certified and follows lead-safe work practices where required.
It's the difference between a clean job and lead dust through your house.
Three simple steps. That's the whole process.
1. We measure
Every opening measured, with a look at the windows and the area around them.
2. You get one number
Written, one total for the whole project, sent by email.
3. We install and clean up
Our crew, owner on site, old windows gone.
Stop living with windows you don't like opening.
Prefer to talk? Call (410) 336-1945.
We install trusted brands
Certified & accredited
Ready for a free estimate?
No pressure, no hidden fees. Just a friendly visit and an honest quote — we usually return your call within 24 hours.
- Financing available through GreenSky
- Licensed & bonded · MHIC #131411 · PA #189243
Prefer to talk? Call (410) 336-1945.
Great Discount Offer
10% OFF
Military personnel, veterans and senior citizens receive 10% off any service we offer.
code: USHERO