Serving Wamego, Manhattan, Topeka & Lawrence | 5-Star Rated Service
The Knowledge Base

Educated Homeowners
Make Better Decisions.

Windows are a major investment. We believe you should understand exactly what you are buying. No jargon. No secrets.

Decoding the NFRC Label

Every window comes with a sticker. Most people ignore it. We teach you how to read it. Here are the two numbers that define your comfort:

U-Factor

Insulation. How well the window keeps heat inside during winter.
Lower is better (Target: < 0.30)

SHGC

Solar Heat. How much sun heat gets through the glass.
Kansas Sweet Spot: 0.25 – 0.35

NFRC CERTIFIED
U-Factor (U.S./I-P) 0.27
Solar Heat Gain Coefficient 0.21
Visible Transmittance 0.51
Air Leakage ≤ 0.3

Frequently Asked Questions

Do I need to replace all my windows at once?

No. While doing the whole house ensures consistent aesthetics and immediate energy savings, many homeowners choose to do “phases” (e.g., front of house first) to manage budget.

How long does installation take?

A typical whole-home replacement (10-15 windows) takes 2-3 days. We work room-by-room to minimize disruption.

What is the warranty on your installation?

In addition to the manufacturer’s warranty (often Lifetime or 20-year), Tall Grass Windows provides a 2-year labor warranty on all workmanship.