WindowRP windowrp.com (855) 235-1641

United States

Window replacement, answered first

Say how many windows you have, what type they are and what is wrong with them. Nothing is measured or ordered until you say so.

(855) 235-1641

Licensed installers. No obligation for the call.

The federal tax credit for windows ended on 31 December 2025. Work installed during 2025 is still claimable on that year’s return; for anything installed in 2026 there is no federal credit, and the federal rebate programmes that replaced other incentives never covered windows. What is left.

The other thing worth knowing before shopping: the two numbers on the label mean opposite things at the two ends of the country. A window sold as efficient in Minnesota is the wrong window in Florida. Which one suits your climate.

The same window is right in one state and wrong in another

Heat leaving the house is measured the same way everywhere. Sun arriving through the glass is not: in the north it is warmth you did not pay for, in the south it is load on the air conditioning. That single number is what most of a window sale skips.

Northern states—Northern zone
A section through a window in a wall. Heat leaves the house through the glass, which is what the U-factor measures — here 0.22 or lower. Winter sun passes through and warms the room, which is why the Northern zone asks for solar heat gain of 0.17 or higher rather than limiting it. heat out · U-factor 0.22sun in · wanted here · SHGC 0.17 or higheroutsideinside

heat leaving — the U-factorsun through the glass — solar heat gain

Southern states—Southern zone
A section through a window in a wall. Heat leaves the house through the glass, which is what the U-factor measures — here 0.32 or lower. Sunlight is turned back at the glass, which is what solar heat gain of 0.23 or lower means here. heat out · U-factor 0.32sun turned back · SHGC 0.23 or loweroutsideinside

heat leaving — the U-factorsun through the glass — solar heat gain

A certification label on the glass of a new window
Both numbers are certified and printed on the glass. Ask for them in writing on the quote — a product line name on its own says nothing about either.

What the call can cover

One number, and the same conversation whichever of these it is. Repairs are the exception — a broken pane or a stuck sash is a glazier’s job, not this one.

The whole house
The usual job: every opening at once. Costs less per window than doing it in stages, and it is the only way to be sure the front elevation matches.
A few windows
The bad ones, the weather side, or the rooms you actually sit in. Two is where a visit starts being worth scheduling.
Failed and fogged units
Haze between the panes means the seal has gone. Sometimes the glass unit alone can be changed and the frame kept — worth asking.
Bay, bow and shaped openings
Units that carry part of the wall, or that are not rectangles. These need measuring before anyone can say anything useful about price.
Egress and basement windows
Sized by code so a person can get out, which limits what will fit. Enlarging an opening brings a permit with it.
New openings and additions
A new wall takes a different product — one with a fin that fastens to the sheathing before the cladding goes on.
Impact-rated and coastal
Near the coast, protecting openings is a condition of the permit rather than an upgrade, and the product needs a specific approval number.
Noise, draughts and heat
The three reasons people call. One is solved by glass, one by the frame, and one often is not solved by windows at all.
(855) 235-1641

The day itself

One opening takes a couple of hours. A house takes days rather than weeks, and the order rarely changes.

  1. A work van with wrapped window units being unloaded 01Units arrive built to your measurements.
  2. Two installers carrying a window unit upright across a lawn 02Carried in, one opening at a time.
  3. An old wooden sash being lifted out of an opening 03The old sash comes out. Dust sheets first.
  4. Hands setting a shim under a new window and checking it with a level 04Shimmed and levelled — a house settles, openings do not stay square.
  5. An installer pressing a new window unit into an opening and fastening it 05Set, fastened, sealed against the weather.
  6. An installer fitting new interior trim around a finished window 06Trim back on, and the room is a room again.
(855) 235-1641
License
Issued by the state where the work happens and held by the contractor, not by this site. Ask which name it is held under — a trading name and the licensed entity are often not the same.
Lead certification
Required by federal rule for paid work on any home built before 1978. It has a number, and the firm should give it without hesitating.
The call
Describing the job commits you to nothing. Nothing is measured or ordered until you say so.
Coverage
By town, not by region. Pick a state below and work down to where you are.

What they will ask you

Worth having ready. A call goes further when the answers are already in your head than when they have to be looked for.

  1. 01How many windows, and which rooms they are in. Two is where a replacement job usually starts being worth scheduling.
  2. 02What type they are — double-hung, casement, slider — and roughly what size. The list above is enough to answer with.
  3. 03What is wrong: draughts, condensation between the panes, sashes that will not stay up, or simply age.
  4. 04Roughly when the house was built. It decides what is in the wall and whether the federal lead rule applies.
  5. 05Whether you own the home. A landlord or an HOA in the picture changes who signs and when.
(855) 235-1641
An installer setting a new window unit into an opening

What happens after the call

Someone comes out and measures every opening, inside and out, because a house settles and by the end no two are the same width. What is behind the trim decides whether a new unit can go inside the old frame or the frame has to come out — and that is the difference that moves a quote more than the brand does.

Windows are then built to those measurements, which is why most of the wait happens before anyone arrives with a van.

(855) 235-1641

Your state

Climate zone, what the housing of the area is likely to have in the wall, and whether the coastal code reaches you — town by town.

Start here

Call (855) 235-1641