Complete Window & Door Replacement
16 drafty single-pane windows and 2 exterior doors replaced with energy-efficient Andersen 400 Series double-hung windows and a Therma-Tru fiberglass entry system — dramatically reducing energy costs and eliminating condensation issues.
$22,000
Budget
4 days
Timeline
72%
Est. ROI
16 windows + 2 doors
Scope
The Challenge
The homeowners of this 1990 Bi-Level in Nazareth Borough had the original builder-grade single-pane windows with aluminum frames. Every winter, condensation formed on the inside, and drafts made rooms near windows uncomfortable.
Their energy bills were over $400/month in winter despite running the furnace constantly. The front entry door had a broken seal and the slider to the back deck wouldn't lock properly.
They wanted energy-efficient replacement windows throughout, a new front entry door for curb appeal and security, and a new sliding patio door — all before the coldest months hit.
Our Solution
We developed a complete window and door replacement plan using premium Andersen and Therma-Tru products, designed for maximum energy savings and a quick 4-day installation.
Remove 16 existing single-pane aluminum-frame windows
Install 16 Andersen 400 Series double-hung windows (white exterior, wood interior)
Low-E glass with argon fill for maximum energy efficiency
Spray foam insulation around all window frames
New interior trim and casing on all 16 windows (pine, stain-grade)
Remove and replace front entry door with Therma-Tru Smooth-Star fiberglass
Install new Andersen 200 Series gliding patio door with built-in blinds
New locksets: Schlage keyless entry on front, multi-point lock on slider
Exterior caulking and flashing on all openings
Interior touch-up painting around all new trim
Cost Breakdown
Final project cost: $21,300 (under the $22,000 budget).
Project Timeline
Day 1
Remove and install 8 windows (upper level)
Day 2
Remove and install 8 windows (lower level), foam insulation on all
Day 3
Front entry door and patio slider installation
Day 4
Interior trim, casing, caulking, hardware, touch-up painting, final inspection
“Our January energy bill dropped from $420 to $260. The house is so much quieter now — we didn't realize how much noise the old windows let in. The Andersen windows are beautiful and the front door completely changed our curb appeal.”
— Homeowner, Nazareth, PA
Key Takeaways for Homeowners
Energy Savings Are Immediate
The homeowner's heating bill dropped 38% in the first winter month — from $420 to $260. At $160/month savings, the windows will pay for themselves in about 11 years, not counting the increased home value.
Andersen Quality Is Worth It
Andersen 400 Series costs more than vinyl replacements, but the wood interior, superior weather sealing, and 20-year warranty justify the premium. These windows will last 30+ years with minimal maintenance.
Don't Forget the Doors
A broken-seal entry door can lose as much heat as 3-4 old windows combined. The Therma-Tru fiberglass door has 4x the insulation value of the old wood door, plus the keyless entry adds modern convenience and security.
Winter Installation Is Fine
Many homeowners wait for spring, but modern replacement windows install quickly with minimal open-window time (under 15 minutes per window). We completed 16 windows in 2 days with no temperature issues inside.
Project Details
Project Type
Window & Door Installation
Location
Nazareth, PA
Budget
$22,000
Actual Cost
$21,300
Timeline
4 days
Scope
16 windows + 2 doors
Home Type
1990 Bi-Level
Started
January 2026
Completed
January 2026
Ready to Upgrade Your Windows?
Get a free, detailed estimate for your window and door replacement. We serve Nazareth, Northampton County, and all of PA & NJ.
Vincent Karaca
Founder Vincent Karaca brings over 23 years of hands-on field experience to every project. He is a master of structural remodeling and is personally committed to transparent, honest contracting. Licensed PA HIC #158550 & NJ HIC #13VH11744800.