Window Contractor in Boise, Idaho
Licensed window replacement contractor serving Boise — energy-efficient upgrades, single-pane replacements, Idaho Power rebate-eligible installs, and expert fitting for North End historics and new construction alike
Window replacement is one of the highest-impact improvements a Boise homeowner can make — reducing heating and cooling costs, eliminating drafts, improving street appeal, and qualifying for Idaho Power rebates and federal tax credits. Boise's climate, with temperature swings from below 10°F in January to over 100°F in July, demands windows that perform across extremes. Single-pane windows still found in thousands of Boise homes — particularly in the North End and older Southeast Boise neighborhoods — lose heat at three to four times the rate of modern dual-pane low-e units.
The difference between a licensed contractor and a window salesman is in the installation. Improperly installed windows — without proper flashing, correct shimming and leveling, or complete air sealing — will leak air and eventually water regardless of how good the window unit itself is. Iron Crest follows manufacturer installation specifications precisely on every window we install, including proper pan flashing at the sill, head flashing integration with the water-resistive barrier, and foam and caulk air sealing at every perimeter gap.
Idaho RCE License #6681702. Fully insured. Every window project includes documentation for Idaho Power rebate applications and federal 25C tax credit qualification.
Double-Hung Vinyl Windows
The most common replacement window in Boise — dual-pane, low-e coated vinyl windows in the standard double-hung configuration. Both sashes tilt in for interior cleaning, making them practical for second-floor applications. Vinyl frames require no painting and perform well in Boise's dry climate. We carry multiple vinyl lines from entry-level to premium grades with enhanced weatherstripping and multi-point locking systems.
Fiberglass Windows
Fiberglass window frames offer superior dimensional stability across Boise's temperature extremes — they expand and contract at nearly the same rate as glass, maintaining tight seals over decades of use. Fiberglass can be factory-painted or field-painted to any color, making them ideal for Boise's foothills custom homes and North End properties where exterior color matching matters. A premium fiberglass window delivers measurably better energy performance than vinyl at a 30–50% cost premium.
Casement and Awning Windows
Casement windows (side-hinged, crank to open) and awning windows (top-hinged) provide better air sealing than double-hung windows when closed because the sash presses against the frame all the way around. They are popular in Boise's modern and contemporary homes for their clean sightlines and unobstructed views. Casements also capture side breezes that double-hung windows miss, valuable in Boise's warm shoulder-season months.
Picture and Fixed Windows
Fixed picture windows provide maximum view and light with no operating hardware — and therefore the tightest air seal of any window type. They are popular in Boise's foothills homes where views of the Owyhee Mountains or the Boise Front are a primary design asset. Large-format picture windows require careful installation to manage structural loads and thermal glass movement. Iron Crest installs fixed windows up to 8 feet wide in Boise homes.
Egress Windows
Egress windows in Boise basement bedrooms and sleeping areas must meet International Residential Code minimum opening requirements: 5.7 square feet of clear opening, minimum 24 inches high and 20 inches wide, with a sill height no more than 44 inches from the floor. Egress window installations require a City of Boise building permit, foundation cutting, and window well installation. Iron Crest handles the complete egress window scope from permit to finish.
Idaho Power Rebates
Idaho Power customers who replace single-pane or non-ENERGY STAR windows with qualifying ENERGY STAR certified windows may be eligible for rebates through Idaho Power's Home Products program. Qualifying windows must meet U-factor and SHGC thresholds for Idaho's climate zone. Iron Crest provides all product documentation and assists with rebate application submission after project completion.
Federal 25C Energy Efficient Home Improvement Credit
The Inflation Reduction Act extended and enhanced the federal 25C tax credit through 2032. Boise homeowners can claim 30% of qualifying window costs, up to $600 per year for windows, on their federal income tax return. Windows must be ENERGY STAR certified and installed in an existing primary residence (not new construction). Iron Crest provides the product certifications and cost documentation required for your tax preparer.
ENERGY STAR Certification for Boise
Boise falls in ENERGY STAR's Northern climate zone. Windows qualifying for this zone must achieve a U-factor of 0.27 or lower (whole window) and a Solar Heat Gain Coefficient appropriate for heating-dominated climates. Most of the vinyl and fiberglass window lines Iron Crest installs meet Northern climate ENERGY STAR requirements. We specify glass packages to ensure every project qualifies.
Measurement and assessment
Every rough opening is measured precisely. Frame condition, flashing, and exterior cladding are assessed for any necessary repairs.
Product selection and order
We specify ENERGY STAR qualifying products sized to your openings and ordered to factory specifications. Lead times are typically 3–5 weeks.
Old window removal
Existing windows are removed carefully to preserve interior and exterior trim where possible. Damaged framing, rot, or failed flashing is repaired before new windows go in.
Proper installation and flashing
Windows are shimmed level and plumb, fastened per manufacturer specs, and flashed with pan flashing at the sill and head flashing integrated with the WRB.
Air sealing and insulation
All perimeter gaps are filled with low-expansion foam and caulked at the exterior. Interior trim is reinstalled or replaced to a finished standard.
Inspection and rebate documentation
Every window is tested for operation, air gaps, and weatherstrip seal. We provide all product documentation for Idaho Power rebates and federal tax credits.
Standard Double-Hung Vinyl Window (per window)
Dual-pane low-e, insert replacement, includes removal
$600 – $1,400
Premium Fiberglass Window (per window)
Factory-painted, dual-pane low-e, full installation
$900 – $2,200
Full Home Replacement (15–20 windows)
Standard vinyl line, complete project
$10,000 – $28,000
Egress Window Installation
Foundation cut, window well, permit, complete finish
$2,500 – $5,500
Opening Enlargement (per window)
Structural header, permit, framing, new window
$1,500 – $4,000
All prices include removal of existing windows, disposal, installation, flashing, air sealing, and interior/exterior trim restoration. Prices do not include permit fees where required or structural engineering for opening modifications.
The following government agencies, industry organizations, and official resources provide additional information relevant to your remodeling project.
What does window replacement cost in Boise, Idaho?
Window replacement costs in Boise depend on window count, frame material, glass package, and installation complexity. A standard double-hung vinyl window replacement in a Boise home runs $600–$1,400 per window installed, including removal and disposal of the old unit. Fiberglass windows with premium low-e glass run $900–$2,200 per window. A full home replacement of 15–20 windows in a typical Boise ranch or two-story runs $10,000–$28,000 depending on products selected. Older Boise homes — particularly North End Craftsmans with original wood frames and non-standard rough openings — can require additional carpentry to reframe openings, adding $200–$600 per window. Iron Crest provides a fully itemized estimate after measuring every opening in your home.
Are my windows eligible for Idaho Power rebates?
Yes — Idaho Power offers energy efficiency rebates for qualifying window upgrades under their Home Products program. To qualify, replacement windows must meet ENERGY STAR certification requirements, which currently require a U-factor of 0.30 or lower and a Solar Heat Gain Coefficient (SHGC) appropriate for Idaho's climate zone. Rebates typically run $2–$4 per square foot of qualifying glass area. For a full home replacement, Idaho Power rebates can offset $400–$1,200 of total project cost. Iron Crest installs ENERGY STAR certified windows and provides all documentation needed to submit your Idaho Power rebate application. We recommend verifying current rebate amounts at idahopower.com before your project begins, as program details change annually.
What window frame material is best for Boise's climate?
Boise's climate — hot, dry summers reaching 100°F+ and cold winters with temperatures regularly below 20°F — creates significant thermal expansion and contraction cycles for window frames. Vinyl frames perform well in Boise's dry climate: they do not rot, require no painting, and provide good thermal performance at a lower cost than fiberglass. Fiberglass frames outperform vinyl in thermal efficiency and dimensional stability across temperature extremes, making them the preferred choice for Boise's foothills homes and premium applications. Wood frames — original in many North End historic homes — offer beauty but require regular maintenance in Boise's dry summer heat to prevent cracking and paint failure. Aluminum frames, while durable, conduct heat and cold readily and are not recommended for energy efficiency in Boise without a thermal break design.
Do single-pane windows in my Boise home qualify for replacement grants?
Single-pane windows are among the lowest-performing elements in any Boise home and are a primary source of heat loss in winter and heat gain in summer. Beyond Idaho Power rebates, Boise homeowners with single-pane windows may qualify for assistance through the Idaho Housing and Finance Association's weatherization programs if income-eligible. The federal Energy Efficient Home Improvement Credit (25C) allows homeowners to claim up to 30% of qualifying window replacement costs (up to $600 annually for windows) on federal taxes for ENERGY STAR certified windows installed through December 31, 2032. Iron Crest can document your project for all available incentive programs and provide the product certifications required.
What permits are required for window replacement in Boise?
Like-for-like window replacement in Boise — replacing an existing window in the same rough opening with a new unit of the same or smaller size — typically does not require a permit from the City of Boise Building Department. However, enlarging a window opening, adding a new window where there was none, or altering a load-bearing wall to accommodate a new window requires a building permit and potentially a structural engineering review. Egress window installations in basements always require permits. Iron Crest assesses permit requirements for every project before beginning work and manages all permit applications when required.
How long does window replacement take in a Boise home?
Insert window replacements — where the new window unit inserts into the existing frame — move quickly. An experienced Iron Crest crew can replace 8–12 standard windows in a Boise home in a single day. Full-frame replacements, where the old frame is removed entirely and the opening is refinished, take 20–30 minutes longer per window. A full home replacement of 15–20 windows typically completes in 2–3 days. After installation, we apply interior and exterior trim, caulk all perimeter gaps, and test each window for smooth operation before leaving the job site.
Can I replace windows in a Boise North End historic home?
Yes, but the North End Historic District has design review requirements for exterior modifications — including window replacement — that must be reviewed before work begins. The Boise Historic Preservation Commission reviews proposed changes in the district and generally requires replacement windows to match the profile, divided light pattern, and material appearance of original windows. Wood windows with true divided lights or simulated divided light grilles are often required to maintain historic character. Iron Crest has experience navigating the Boise Historic Preservation review process and can specify windows that satisfy both energy efficiency goals and historic preservation requirements. We recommend scheduling a pre-application consultation with the City of Boise Planning Department before selecting products.
What is a low-e window coating and why does it matter in Boise?
Low-emissivity (low-e) glass has a microscopically thin metallic coating that reflects heat radiation while allowing visible light to pass through. In Boise's climate, low-e glass serves two seasonal purposes: in winter, it reflects interior heat back into the room, reducing heating costs; in summer, it reflects exterior solar infrared radiation, reducing cooling loads. For Boise's climate zone (Zone 5), dual-pane windows with a low-e coating reduce heat loss by 30–40% compared to standard clear dual-pane glass. Triple-pane low-e windows further improve performance but add weight and cost. For most Boise homes, high-performance dual-pane low-e glass provides the best return on investment. Iron Crest specifies glass packages appropriate for each home's orientation and exposure.
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