Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Pomona
New windows in Pomona have to do more than look sharp. They have to stand up to Santa Ana wind gusts that come screaming down the San Gabriel foothills, hold back summer heat that bakes east-facing bedrooms all afternoon, and seal tight against the fine dust that settles on every sill when the winds kick up. Juniper Windows & Doors handles all of it from the first measurement call to the final inspection sign-off. We serve the whole Pomona valley, from Phillips Ranch to Lincoln Park to Westmont, and our crews know exactly what homes here are up against. Call (682) 281-2168 any time to get a written price before anything starts.
Why Juniper Windows & Doors Is Pomona’s Preferred Window Installation Company
We’re part of the Relay Home Co. family, founded in 2001, and every project is led by Sean Mackey. What that means locally is simple: you call, a live person answers 24/7, and you get a real conversation instead of a voicemail maze. We serve Pomona directly, scheduling from the brand’s Los Angeles office with crews that work here week in and week out.
Every Juniper job runs on The Relay Standard. Book in a tap, get a live arrival time you can track, see before-and-after photos of the work, and pay from a digital invoice. The written price you get before the first screw turns is the price you pay. If anything isn’t done right, the 365-Day Done Right Promise covers it, parts and labor, in writing for a full year. No fine print, no “we’ll see what we can do.”
Pomona homeowners deal with a specific set of challenges: older 1950s and 1960s housing stock around Lincoln Park and North Pomona, newer tracts in Phillips Ranch, and wind exposure that varies block to block depending on how close you sit to the 10 or the 57. Our window installers are background-checked, uniformed, and trained on eight product lines, so the right window for your specific street is never a compromise. We show up when we say we will. That part isn’t a feature. It’s the baseline.
Casement Windows in Pomona
Casement windows are a smart pick for many Pomona homes, especially in neighborhoods like Ganesha Hills or Phillips Ranch where afternoon sun and west-facing glass turn rooms into ovens by 4 p.m. Because they crank open outward on a hinge and seal against the frame with a compression gasket, they offer the tightest air seal of any operable window style. That matters in Pomona because Santa Ana wind-driven dust finds its way into every gap, and a casement’s seal does a better job keeping it out than a sliding sash ever will.
A typical casement window installation in Pomona runs $600 – $1,500 per window installed. Impact-rated PGT casements with laminated glass run higher, generally $1,200 – $2,600 per unit, but they’re often the right call on wind-exposed lots. The crank hardware and hinge system mean there’s no lifting, which homeowners in the older single-story ranches around Lincoln Park appreciate when the window is wide or mounted low.
Cranking hardware and wind exposure
Casements have moving parts that sliding windows don’t, and in Pomona’s Santa Ana corridor those parts take a beating. We see more crank-mechanism failures and hinge wear on west- and north-facing homes than anywhere else in the valley. When you’re replacing, the spec of the hardware matters as much as the glass package. We install units with stainless steel hinges and multi-point locks, which is what Pomona’s wind exposure actually calls for rather than what a generic big-box quote defaults to.
Where casements make the most sense
In Pomona kitchens, casements over the sink stay popular because the crank handle is reachable even when the window sits behind a counter. They also work well in bathrooms above tub decks, where a slider would be awkward to reach. If you’re planning a remodel on a mid-century home near Lincoln Park or a ranch in Westmont, casements keep the original architectural feel while cutting the air leakage that makes old aluminum frames so drafty.
Double Hung Windows in Pomona
Double hung windows remain the most common replacement style across Pomona’s older neighborhoods, from the 1920s bungalows north of Holt to the post-war ranches that line the streets around Ganesha Park. They’re the style homeowners expect on a traditional Southern California house: two sashes that slide vertically, both of which tilt in for easy cleaning. In Pomona’s market, a standard vinyl double hung replacement runs $500 – $1,100 per window installed, with higher-end PGT or ES Windows units landing between $900 and $1,800 depending on glass package and frame material.
The honest tradeoff with a double hung is that it can’t seal as tightly as a casement, because sliding sashes leave small air paths at the meeting rail. On Pomona homes in wind-exposed spots, we spec reinforced frames and check the jamb condition carefully before setting the new unit. Original single-pane double hungs from the 1950s in Lincoln Park and North Pomona are often so far out of square after 60 years of settling that the new sash needs a properly shimmed and squared rough opening to operate smoothly.
The old sash and jamb problem
We see the same issue on nearly every original double hung we pull in Pomona: the jamb pocket has dry rot or termite tunnels hiding behind the old aluminum retrofit frame. If the jamb isn’t checked and sistered before installation, the new window will bind or leak, and the manufacturer’s warranty won’t cover the movement or water damage that follows. Juniper’s installers open the wall, check the framing, and fix what’s there before the new unit goes in. That step is what separates an installation that lasts 20 years from one that squeaks after two.
Cooling and ventilation tradeoffs
A double hung lets you open the top sash to vent hot air while the bottom stays shut, which works well on Pomona summer evenings when the valley finally cools after sunset. Pair that with a low-E glass package and the AC load drops noticeably, especially on second-story bedrooms. Homeowners in Phillips Ranch and Westmont who swap out 1970s-era tinted glass for modern low-E double hungs routinely report cooler afternoons and quieter nights, even during Santa Ana events.
Trusted Brands We Service in Pomona
Juniper Windows & Doors hangs its reputation on the manufacturers we install, and only the ones that earn their place in Pomona’s wind and heat conditions. PGT impact-rated products lead the list for homes anywhere near the Santa Ana corridor at the base of the San Gabriels. We also carry CWS for coastal-grade aluminum lines that make sense on modern designs, and ES Windows for thermally broken aluminum frames that hold up in the valley’s summer heat without the expansion issues that plague cheaper extrusions. Because our Window Installation team stocks these lines directly, turnaround on warranty parts and replacement sashes is faster than it is for a contractor who has to source through a reseller. You get the right product for your block, not whatever a distributor happens to have sitting in the yard.
Common Window Installation Problems We See in Pomona Homes
- Standard windows spec’d on wind-exposed lots. A window that meets code for a sheltered Claremont street can fail the required design pressure for a Pomona home that sits in the direct path of Santa Ana gusts funneling through the San Gabriel foothills. The rough-in gets flagged, the permit submittal gets rejected, and the homeowner pays twice.
- Rot and termite damage hiding in old jambs. In 1950s and 1960s Pomona ranches, we regularly find dry rot or termite galleries inside the jamb pocket once the old frame comes out. Skip the check, set the new window, and the leaks or movement that follow void the manufacturer’s warranty.
- Wind-driven rain working through north-facing joints. Decade after decade of Santa Ana rain angled against north and east walls rots the rough opening framing on older homes in Lincoln Park and North Pomona. The new window needs a weather-resistive barrier and proper flashing before it goes in, or the same moisture path repeats.
- No final inspection sign-off. We see homeowners left without a signed final inspection, which matters when you go to sell or when you want the documented wind mitigation upgrade for insurance credits. The paperwork is part of the job, not an add-on.
Pricing for Window Installation in Pomona, CA
Here’s where Pomona lands, honestly. A standard vinyl double hung replacement on a typical ranch runs $500 – $1,100 per window installed. Casements run $600 – $1,500 per unit. Impact-rated PGT products with laminated glass, which we recommend for wind-exposed lots, run $1,200 – $2,600 per window depending on size, frame material, and glass package. What moves the number? The rough opening condition, whether the existing frame lets you do a retrofit versus a full tear-out, the design pressure your specific street requires, and whether stucco repair is needed around the new unit. Juniper gives you a written line-item quote before work starts, and that number is fixed. Call (682) 281-2168 for a free estimate. No vague ballparks followed by a surprise invoice.
We Also Serve Cities Near Pomona
Beyond Pomona, our crews serve Diamond Bar, Montclair, Chino Hills, and Claremont. If you’re on the border near the 57 or 10, you’re still firmly in our service area. For a broader look at how we handle projects across the region, visit our Window Installation in Pomona hub page.
Serving Pomona, CA - Our Local Coverage Area
We’re based in the Pomona area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Window Installation in Pomona
Yes, window replacement in Pomona requires a building permit, and the city will inspect the rough opening before the new units are set. For homes in the Santa Ana wind corridor, the permit submittal must show the windows meet the required design pressure for your specific exposure, which is why a generic spec from an out-of-area contractor gets bounced. Call (682) 281-2168 and we’ll walk you through the exact permit path for your street.
Design pressure, or DP rating, measures how much wind and water a window can resist before failing. Pomona’s location at the base of the San Gabriel Mountains means Santa Ana winds often require a higher DP rating than sheltered cities like Claremont or La Verne, even without coastal HVHZ rules. A window that meets code in one city can fail the same inspection five miles away, so getting the spec right before you order is everything.
Most Pomona projects run two to four weeks from signed contract to final inspection. Custom impact-rated units from PGT or CWS add lead time on the manufacturing side, typically an extra two to three weeks. The on-site installation itself is usually one to two days for a typical single-story ranch, with the final inspection scheduled within the week after the work and water test are complete. Call (682) 281-2168 and we’ll give you a realistic calendar for your specific order.
The number one price driver we see is the condition of the rough opening. When the old frame comes out and we find rot, termite damage, or an opening that’s drifted out of square, the framing has to be sistered and squared before the new unit sets correctly. That work isn’t optional, and it’s the same reason a $400-per-window “deal” turns into a $900-per-window final invoice with other contractors. Juniper gives you the written price before work starts, and we include the framing check in the quote rather than springing it on you after the saw comes out.
Yes, and the difference on Pomona’s west-facing rooms is noticeable. Replacing single-pane aluminum or 1970s tinted glass with modern low-E, argon-filled units cuts the solar heat gain that turns afternoon bedrooms into saunas, especially on the west side of Phillips Ranch and Ganesha Hills. The energy savings are real, but the quieter house during Santa Ana events is the part homeowners mention first.
Need a straight answer and a written price? Call Juniper Windows & Doors at (682) 281-2168 to schedule your free estimate. A live person picks up, and you’ll get the real number before anything starts.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Pomona and the surrounding valley.










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