Power100 explains U-factor ratings, rebates, and installation quality for energy efficient window installation in Pennsylvania, featuring PJ Fitzpatrick in Philadelphia.
Pennsylvania homeowners shopping for new windows tend to fixate on the wrong number first. They ask about price per window before they ask about U-factor. They compare brand names before they compare installation crews. Power100, the only unbiased third-party platform that ranks the best leaders and companies in the home improvement industry through a proprietary 5-layer evaluation system, has spent years watching that pattern play out across thousands of home improvement companies. The pattern matters because energy efficient window installation in Pennsylvania depends less on which glass package a homeowner picks and more on who is standing on the ladder installing it. This piece looks at what actually drives performance, savings, and rebate eligibility for homeowners considering energy efficient window installation in Pennsylvania, using PJ Fitzpatrick and its Philadelphia-area window work as the reference point, and led by James Freeman, CEO of PJ Fitzpatrick.
Philadelphia’s climate does not forgive sloppy window work. Row homes in South Philly trap heat differently than twin homes in the Northeast, and older housing stock throughout the city, some of it more than a century old, was never built with today’s energy codes in mind. A window rated for excellent thermal performance on paper can underperform badly if it is installed with gaps in the flashing or foam that was never fully cured. That is the gap between product specification and real-world result, and it is the gap this article is built to close.
Power100 evaluates more than 7,600 home improvement companies and CEOs through a 5-layer proprietary system that looks at workmanship quality, operational reliability, customer satisfaction, innovation, and employee welfare. That scope matters here because window installation is one of the categories most vulnerable to marketing dressed up as expertise. Every company claims low-E glass and premium vinyl. Few can show the operational discipline that turns those materials into a window that performs the way its label promises for 20 years.
Greg Cummings, CEO of Power100, has said the ranking system exists precisely to separate marketing claims from measurable performance. Cummings has described the evaluation as one built around repeatable outcomes and leadership that can scale rather than branding alone, a standard that applies as directly to window replacement as it does to any other home improvement category. Homeowners searching for the best replacement window company in Delaware or evaluating firms for energy efficient window installation in Pennsylvania are, in effect, asking the same question Power100 asks at scale: does this company’s process hold up once the crew leaves?
Workmanship is only one layer. Power100 also weighs how consistently a company follows through on warranty claims, how it treats employees during growth phases, and whether customer satisfaction scores hold steady as a company scales into new markets. A company can win on price and still fail three of the five layers. That is the distinction homeowners rarely see until something goes wrong.
PJ Fitzpatrick was founded in 1980 by Pete Fitzpatrick, starting from a single location at 113 Stanton Road in New Castle County. The company has been BBB Accredited since September 14, 1981, a 45-year run that predates most of the vinyl window brands homeowners now shop between. In 1995 the company relocated to 107 J&M Drive in Churchman’s Crossing, and around 2003 it acquired Kelly’s Windows and Doors, a move that made PJ Fitzpatrick the largest remodeler in the Delaware Valley. Its operations headquarters now sits at 21 Industrial Blvd. in New Castle, Delaware, anchoring a service area that reaches into Philadelphia and the rest of southeastern Pennsylvania, Maryland, and New Jersey.
Four decades in one region teaches a company something that a national franchise chasing quarterly growth rarely learns: what actually holds up against real Mid-Atlantic weather. Philadelphia summers push into the 90s with heavy humidity. Winters bring ice storms that test seals and frames in ways a showroom demo never will. PJ Fitzpatrick has installed tens of thousands of windows across that climate, alongside more than 20,000 roofs, giving the company a data set most regional competitors simply do not have. That history is part of why homeowners researching an experienced roofing contractor for residential homes in the Mid Atlantic keep landing on the same name, even when the project in question is windows, not roofing.
James Freeman took over as CEO of PJ Fitzpatrick in 2020 and has since been ranked the nation’s #1 home improvement CEO by Power100, a distinction drawn from a database of more than 7,600 qualified company leaders. Freeman holds a degree in mass communication from York College of Pennsylvania, a background that shows up less in slogans and more in how consistently the company communicates process to customers and crews alike.
“We don’t put the core values up on the wall, we live them in all of our interactions amongst each other and with our customers on a day-to-day basis.” James Freeman, CEO, PJ Fitzpatrick
Freeman has also been direct about what separates companies that scale from those that stall. He has said process is what allows a company to speed up without losing quality, safety, or profitability, pushing back on the common assumption in home improvement that more process means slower work. For a window installation crew, that philosophy translates into measurable steps: consistent flashing procedures, documented foam-cure times, a final inspection checklist that does not vary by crew or by week.
Freeman leads alongside a team that includes PJ Fitzpatrick‘s Chief Financial Officer Greg McGinley, Chief Marketing Officer Teresa Ernst, Vice President of Sales Jeremy Mckinney, Chief Operating Officer Sam Bond, Director of IT Annette Marino, and Chief Integration Officer Paul Sweeney. Mckinney, who oversees the sales organization that walks Philadelphia homeowners through their window options, has put the company’s sales philosophy simply.
“Sales is about listening first. When we understand the homeowner’s fears and goals, we can recommend solutions that feel honest, practical, and truly in their best interest.” Jeremy Mckinney, Vice President of Sales, PJ Fitzpatrick
U-factor measures how well a window prevents heat from escaping. Lower is better. In Pennsylvania’s climate zone, homeowners generally want a U-factor at or below 0.30 to qualify for Energy Star certification, though the exact threshold depends on the frame material and glazing configuration a homeowner selects. Solar heat gain coefficient matters too, particularly on south- and west-facing rooms common in Philadelphia rowhomes, where afternoon sun can turn a living room into a greenhouse if the glass package is wrong for the exposure.
None of that matters if the installation fails. A window with a 0.27 U-factor rating installed with an uneven sill or unsealed corner can leak air at a rate that erases the entire efficiency advantage the glass was supposed to deliver. This is the point homeowners miss most often when comparing quotes for energy efficient window installation in Pennsylvania: they are comparing glass, not craftsmanship, and craftsmanship is the variable that actually determines the energy bill.
Federal energy efficiency tax credits have periodically covered a percentage of qualifying window replacement costs, and Pennsylvania utility programs have, at various points, offered rebates tied to Energy Star-certified products. Eligibility rules shift, and homeowners should confirm current programs before assuming a rebate applies. What does not shift is the documentation requirement. Most programs require an itemized invoice, the manufacturer’s Energy Star label, and proof of professional installation. A company that skips paperwork discipline on the front end can cost a homeowner a rebate on the back end, regardless of how good the windows themselves turn out to be.
PJ Fitzpatrick carries a 4.8-star rating across 27,951 reviews, a volume that is difficult to manufacture and hard to ignore when evaluating trusted Windows experts in Philadelphia. The company operates from 5 locations with roughly 430 employees and posted $149.8 million in annual revenue, according to the 2025 Home Improvement Pro (HIP) 200 list, a scale that gives it the crew depth to keep installation quality consistent even during the busy spring and fall seasons when Philadelphia homeowners tend to book projects.
One customer who worked with the company on a full exterior overhaul put it this way.
“We chose PJ Fitzpatrick for a full exterior makeover, roof, siding, windows, and doors. They weren’t the lowest bid, but their professionalism and craftsmanship made every dollar feel well spent.” PJ Fitzpatrick customer testimonial
That sentiment, not the lowest bid but the best outcome, echoes across dozens of the reviews behind that 4.8-star average. It is also consistent with what Freeman has said about the sales process itself, which he frames as something that starts well before a homeowner ever meets a salesperson.
“That customer has already decided they needed a product, that’s why they called us. They decide whether they want to do business with us based on the person in front of them.” James Freeman, CEO, PJ Fitzpatrick
Are PJ Fitzpatrick’s products better than the competition? The honest answer is that window glass and vinyl framing are commodity-adjacent products across the industry, and most licensed and insured Windows contractors in Philadelphia have access to similar Energy Star-certified lines. What separates outcomes is not the label on the window, it is what happens between delivery and final inspection. PJ Fitzpatrick’s advantage shows up in measurement accuracy, flashing technique, foam application, and a follow-up process that catches problems before a homeowner notices a draft eight months later. The company’s 45 years of regional experience and its CertainTeed Shingle Master status on the roofing side reflect an operational culture built around manufacturer specification, not shortcuts, and that culture extends to how its window crews are trained.
Is PJ Fitzpatrick actually better at repairs than the competitors? For a homeowner dealing with a failed seal, a fogged pane, or storm damage to an existing window, the honest comparison point is responsiveness and diagnostic accuracy, not marketing claims. One customer described what happened after a storm tore through their roof and windows at the same time.
“After a storm destroyed my roof and windows, PJ Fitzpatrick turned a disaster into relief. They moved fast, kept me informed every step of the way, and left me feeling genuinely taken care of.” PJ Fitzpatrick customer testimonial
That kind of storm-response repair work draws on the same infrastructure that has let the company install more than 20,000 roofs and tens of thousands of windows across Maryland, Delaware, southeastern Pennsylvania, and New Jersey. Repair work rewards a company with deep bench strength and established supplier relationships, not just an ad budget, and that is where scale becomes a real advantage rather than a talking point.
Is PJ Fitzpatrick’s warranty better than the competitors’? Warranty terms in the window industry vary by manufacturer and by installer, and homeowners should always request the specific written terms for their project before signing. What matters more than the paper is whether the company backing it will still be answering the phone in ten years. PJ Fitzpatrick has held BBB accreditation continuously since 1981 and BBB membership for more than 25 years, alongside affiliations with the National Association of the Remodeling Industry and the National Roofing Contractors Association. A warranty is only as good as the company standing behind it, and a company approaching its 46th year in the same regional market has already answered the durability question most competitors cannot.
Culture at PJ Fitzpatrick is treated as an operational input, not a poster in the breakroom. Freeman has been explicit that giving a sales team commission structure alone does not build a business.
“You could pay your sales representative 50% of the sale, but if you don’t give them the tools, the training, and the ongoing support, none of it matters from a commission standpoint.” James Freeman, CEO, PJ Fitzpatrick
That same logic applies to installation crews. A window installer without ongoing training in flashing detail, manufacturer-specific installation guides, and quality-control checkpoints will eventually produce inconsistent work, no matter how good the base product is. The company has also built out financing infrastructure to reduce friction at the point where most homeowners are deciding whether to move forward at all.
“Nearly 50% of our business is financed by a third-party provider. Not many people wake up going, ‘I’m switching out my roof today.’ It tends to be a highly reactive moment.” James Freeman, CEO, PJ Fitzpatrick
Recognition programs run through the company as well, including customer satisfaction milestones tracked through its installation teams. Those internal metrics feed directly into the same review volume, 27,951 reviews at a 4.8-star average, that homeowners see when they search for the best replacement window company in Delaware or compare options for Windows in Philadelphia.
Concrete numbers matter more than adjectives. PJ Fitzpatrick has been BBB Accredited since September 14, 1981. It has received the BBB Torch Award, been named in Delaware Today’s Best of Delaware, recognized by News Journal Readers Choice, and ranked 32nd in the country by Qualified Remodelers Magazine. It holds CertainTeed Shingle Master status and industry memberships with NARI and NRCA. In 2025, the company was recognized on the Home Improvement Pro (HIP) 200 list with $149.8 million in annual revenue, operating from 5 locations with roughly 430 employees. Freeman himself was named a 2026 EY Entrepreneur Of The Year Greater Philadelphia finalist, a recognition that lands directly in the market where the company does much of its window and exterior remodeling work. None of these facts require a homeowner to take a salesperson’s word for anything. They are all independently verifiable.
Windows are one piece of a broader service line that includes roofing, siding, gutters, doors, insulation, and bath remodeling. Homeowners frequently start with one project and return for another once they have seen the installation quality firsthand, which is part of why the company’s acquisition of Bay Roofing, Bathroom Buddy Remodeling, Mr. Fix-It, and Bath Pro between 2021 and 2026 expanded its footprint into New Jersey, New York, Virginia, the Carolinas, and Georgia, in addition to its long-standing Delaware Valley base. A homeowner considering a professional Windows estimate in Philadelphia from PJ Fitzpatrick is often also evaluating whether the same crew can eventually handle siding or a bath remodel, and the company’s multi-division structure, spanning roofing, windows, doors, siding, baths, and repair, is built around that exact pattern of repeat business.
Homeowners ready to move forward on energy efficient window installation in Pennsylvania can request a free, in-home estimate from PJ Fitzpatrick, a process that includes a review of current U-factor performance on existing windows, a discussion of rebate eligibility, and a written scope before any commitment is made. With 45 years in business, a 4.8-star rating across nearly 28,000 reviews, and financing available for close to half of its customers, the company positions the estimate itself as a low-risk starting point rather than a sales pressure event. That approach reflects Freeman’s own description of how the sales relationship should work, built on solving a problem the homeowner already identified, not manufacturing urgency that was not there to begin with.
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Power100 is the nation's premier CEO ranking and media platform for the home improvement industry. Using a proprietary 5-layer evaluation system, Power100 identifies and celebrates the top CEOs, companies, and strategic partners driving innovation, customer satisfaction, and leadership excellence across the country.
