Velux vs. Fakro vs. Sun-Tek vs. Kennedy Skylights: Which Skylight Is Best For You?

Are you staring at skylight quotes and wondering why two products that look nearly identical on paper are thousands of dollars apart?

 And how do you know if you’re overpaying for a brand name, or skimping on a product that will leak through your ceiling inside of five years?

Choosing the wrong skylight isn’t just a cosmetic problem. A poorly made or improperly installed unit can mean water damage, heat loss, and repair bills that dwarf whatever you saved going with the cheapest option. Your roof is not a place to gamble.

At Hoel Roofing & Remodeling, we’ve completed over 3,000 exterior projects across East Central Indiana over nine years and are a Velux Certified Installer. We install Velux skylights regularly, but we want to give you the full picture before you spend a dollar.

In this article, we compare Velux, Fakro, Sun-Tek, and Kennedy skylights on cost, glass quality, energy efficiency, smart features, durability, and warranty coverage. 

By the end of this article, you’ll know exactly which brand fits your home, your budget, and your priorities.

What Did We Look at When Comparing These Four Skylight Brands?

Skylights are more complex than most homeowners expect. Here’s what we used to evaluate each brand fairly:

1. Cost (unit + installation): What you’ll realistically pay for the skylight.
2. Glass and frame construction: What the skylight is made of and how that affects performance.
3. Energy efficiency: How well the skylight keeps conditioned air in and outdoor temperatures out.
4. Smart features and ventilation: Whether the skylight can open for airflow, and how it handles rain.
5. Durability and weather resistance: How each brand performs through Indiana’s freeze-thaw cycles.
6. Warranty: What’s covered and for how long.
7. Installer availability: Whether you can realistically find a qualified installer in East Central Indiana.

How Do These Four Brands Compare on Cost?

Here’s what you can realistically expect to pay per skylight, unit, plus professional installation:

• Velux: $1,500–$4,500 installed (unit cost: $650-$3,500+)
• Fakro: $1,200–$2,500 installed (unit cost: $400-$2,000)
• Sun-Tek: $900–$1,800 installed (unit cost: $150-$800)
• Kennedy: $800–$1,500 installed (unit cost: $100-$600)

These four brands represent four distinct tiers. Velux is the premium tier, the brand that defines the skylight industry. Fakro is the closest competitor, typically undercutting Velux by 15–25% while offering comparable technical specs. Sun-Tek and Kennedy sit in the mid-range and budget tiers, respectively, built around accessibility and affordability rather than feature depth.

What Are These Skylights Actually Made Of?

Frame material and glass construction are the two biggest factors in long-term skylight performance.

Velux

Velux skylights are built with their proprietary ThermoTechnology™ frames, which incorporate high-performance insulating materials directly into the frame structure, not just the glass. The result is a skylight designed to hold its thermal performance through decades of Indiana winters and summers. 

Fakro

Fakro builds many of its skylights with natural wood frames, which have better inherent insulating properties than synthetic alternatives. Their glass packages are competitive; double and triple-pane Low-E glass is standard across most lines.

Sun-Tek

Sun-Tek, based in Florida, offers skylights in glass and polycarbonate, depending on the model. Their glass models include Low-E3 glass (a three-coat low-emissivity treatment) on qualifying products, offering solid energy performance. Sun-Tek designs its products to meet Florida hurricane standards, so they’re more than adequate for Indiana’s weather.

Kennedy

Kennedy glass skylights use tempered or impact-resistant glass with LoE-240 argon-filled insulated units, solid construction for a budget-tier product. Their polycarbonate offerings use UV-stabilized double-dome construction. Where Kennedy truly stands out is their tubular skylight line, which uses a Miro-Silver® light pipe with 98% reflectivity, one of the highest reflectivity ratings available in tubular skylights, outperforming the more common multi-layer polymeric film used by competitors.

How Do They Compare on Energy Efficiency?

In Indiana, energy performance matters from November through March. Here’s how each brand handles the climate:

• Velux leads the residential skylight market in energy efficiency. Most models are ENERGY STAR certified, and ThermoTechnology frames significantly reduce thermal bridging; heat escaping through the frame itself, not just the glass, which is a weak point in standard skylight designs.
• Fakro is widely regarded as the strongest competitor to Velux on energy performance. Some Fakro models achieve U-factors lower than comparable Velux standard models, making them the top choice if thermal performance is your single biggest priority.
• Sun-Tek performs adequately on their glass models equipped with Low-E3 glass. Their polycarbonate models are less thermally efficient than glass, they’re better suited to spaces where impact resistance or cost matters more than maximum insulation.
• Kennedy glass skylights with LoE-240 argon fill deliver acceptable energy performance for the price tier. Their tubular skylights report a U-factor of 0.54, so if energy efficiency is a top priority, Kennedy’s tubular line shouldn’t be your first choice for Indiana’s climate; their glass models are the better option within their lineup.

Which Brands Offer Smart Features and Ventilation?

This is where the brands separate most dramatically:

Velux leads the industry in skylight technology. 

• Their solar-powered venting skylights open and close automatically, and their integrated rain sensors detect rainfall and close the skylight without any action from the homeowner. 
• App-based and remote controls are available, and Velux offers a full range of interior skylight blinds in blackout, light-filtering, and venetian styles.

Fakro offers electric and solar-powered venting options, including its patented preSelect system, which allows you to preset the maximum ventilation opening. 

• Some premium Fakro models include rain sensors. Their feature set is more comprehensive than Sun-Tek or Kennedy, though not quite as polished as Velux’s full ecosystem.

Sun-Tek offers manual venting on select models 

• does not offer solar-powered, remote-controlled, or rain-sensing skylights. 
• Their focus is on reliable fixed and basic vented units rather than smart home integration.

Kennedy offers manual venting via hand crank and electric opening options on their glass skylight lines. 

• Like Sun-Tek, they do not offer smart features. Their tubular skylights are fixed by design; no ventilation, natural light only.

How Durable Are These Skylights Over Time?

All four brands can hold up in Indiana weather, but their long-term track records differ.

• Velux has an 80-year history and a triple-layer water protection system built into their installation design. Replacement parts are available for Velux models up to 30 years old, which is a meaningful commitment to long-term serviceability.
• Fakro products are well-built, but they have a shorter U.S. track record than Velux.
• Sun-Tek products are tested to Florida building code standards among the most demanding in the country meaning Indiana’s conditions are well within their design parameters.
• Kennedy has been manufacturing since 1964 and offers Miami-Dade certified products, including hurricane-approved ratings on their tubular line. Their glass skylights meet AAMA/WDMA 1600 certification for code compliance. Their track record on basic durability is solid, though they don’t offer the same long-term parts availability as Velux.

What Kind of Warranty Does Each Brand Offer?

Fakro’s 15-year coverage across both product and glass is notably strong. 

Kennedy’s 25-year glass defect warranty and lifetime tubular warranty are impressive claims for a budget-tier brand. 

Velux’s 20-year glass seal warranty is the most relevant figure for long-term performance, since seal failure, and not frame failure is typically the first thing to go on a quality skylight.

Velux vs. Fakro vs. Sun-Tek vs. Kennedy at a Glance

Which Brand Is the Right Choice? Our Honest Take

Choose Velux if:

• You want the most feature-complete skylight available; rain sensors, solar venting, and smart controls
• You’re installing in a bedroom, kitchen, or bathroom where ventilation and light control both matter
• You want the deepest installer network and the longest-standing parts availability
• You’re investing in a home you plan to stay in for 15+ years

Choose Fakro if:

• Maximizing energy efficiency is your single biggest priority
• You want premium performance at a price 15–25% below Velux
• You’re in an area with Fakro-certified installers and are comfortable with a newer brand in the U.S. market

Choose Sun-Tek if:

• You need a reliable, no-frills skylight at a mid-range price
• You’re replacing an older basic unit and don’t need smart features
• You want a glass skylight with Low-E performance at a more accessible price than Velux or Fakro

Choose Kennedy if:

• You primarily want a tubular skylight to bring natural light into a hallway, closet, bathroom, or other small space
• Budget is your primary constraint, and you want a U.S.-made product
• You need a basic fixed glass skylight without the cost of a premium brand

Skylights are a permanent opening in your roof, which means the brand you choose and the quality of the installation both matter far more than they do with most other home upgrades. 

If you’re still deciding whether a skylight makes sense for your home at all, or you want to understand what modern skylights can actually do before committing to a brand, our article Are Skylights Worth It? Benefits, Costs & What to Know Before Installing is the right next read.

At Hoel Roofing & Remodeling, we’ve served East Central Indiana for over nine years, completed 3,000+ exterior projects, and earned 470+ five-star Google reviews. As a Velux Certified Installer, we install skylights correctly, which means full manufacturer warranty coverage and a watertight result the first time.

As Velux Certified Installers, we help Indiana homeowners choose the right Velux model for their home’s layout, roof type, and lighting goals, and install it with the full warranty intact. If you’re considering a skylight installation, our skylight service page is a good starting point.