Gealan windows for a private house: what is really included in a “warm window” – analysis of a real case
OKNODOM maintains a 4.9 out of 5 rating with 852 reviews on Google — a rare figure for the construction niche. Usually, the rating is “diluted” over a large number of orders. In this article, we analyze one of the latest reviews: a client who was building a house in the Odesa region described in detail what a high-quality window actually consists of — not just at the level of “a plastic window”, but every specific component: profile, glass unit, hardware, installation.
Client review — the basis of the article
★★★★★ “Ordered windows and doors for a private house in the Odesa region. The facade was almost ready, so we matched the color to the roof — dark oak. A technologist came for measurements, measured everything on site, no ‘catalog’ solutions.
On the first floor, they installed Gealan 9000 — 6 chambers, 82.5 mm. On the second — Gealan 8000, also 6 chambers, 74 mm. At first, I thought they skimped on the top, but the master explained: it’s a conscious decision, there is less heat loss on the second floor, the profile is more compact, but also premium.
Glass unit — 48 mm, three panes, energy saving inside, thermal spacer, sun protection glass outside. In summer in Odesa it’s +35, but the house is cool — without an air conditioner.
Handles — anodized metal, identical on windows and doors. Anti-burglar hardware. The windowsills are glossy, with a warm beam underneath — a small detail, but in winter there is no condensation.
Installers Roman and Slavik are professionals. Euro-technology installation, seams are sealed with STIZ, everything is airtight.
Compared prices — competitors asked for more for the exact same set. I recommend it.”
— Review from a client in the Odesa region, Google Maps, 5★
Used with the client’s consent. Photos of the object are below.
Case study: a house in the Odesa region, two floors — two profiles
The client was building a house and choosing windows and doors at a stage when the facade was almost finished. A technologist visited the site for measurements — it is at this stage that the profile and configuration suitable for specific openings are decided, rather than settling for an average “catalog” solution.
One of the client’s key requirements was that the window color match the tone of the metal roof tiles, and the facade look stylish and cohesive, rather than a “mishmash” of different shades. They considered two laminations with a wood texture — golden oak and dark oak. Golden oak is lighter and provides a more contrasting, “warm” accent on light facades, but it suited the specific roof shade of this house less. They settled on dark oak: it almost perfectly matched the color of the metal tiles, and thanks to the expressive wood texture of the lamination, the windows don’t look “plastic” — from a distance, the profile is easily perceived as natural wood, adding warmth and solidity to the facade.
An interesting solution at this site: on the first floor, they installed the Gealan S 9000 profile — 6 chambers, installation depth 82.5 mm. On the second floor — Gealan S 8000, 6 chambers, depth 74 mm.
Master’s comment
“This combination isn’t about saving money on the second floor at the expense of quality. Gealan S 8000 is also a premium 6-chamber system, just with a smaller installation depth. The first floor usually has a larger glazing area and higher requirements for heat loss around the perimeter of the house, so a deeper profile is more often chosen there. On the second floor, you can lighten the construction without losing the overall energy efficiency of the house — this is a conscious engineering decision, not a compromise,” says Illia Yosypovych Kaprishanskyi, Director of OKNODOM, certified installer with German clearances and 18 years of experience.
Gealan S 9000 vs Gealan S 8000: what’s the difference
| Parameter | Gealan S 9000 | Gealan S 8000 |
| Chambers in the profile | 6 | 6 |
| Installation depth | 82.5 mm | 74 mm |
| Frame thermal conductivity coefficient (Uf) | up to 0.89 W/m²·K | 0.98 W/m²·K |
| System class | premium, maximum energy savings | premium, optimal balance of price and thermal insulation |
| Typical application | first floor, large openings, facade with high heat loss | second floor, medium-sized openings |
| Price (estimated, 2026) | from 11,800 UAH/m² | from 7,000 UAH/m² |
| Glass unit | 32/44/48 mm (up to 54 mm with STV®) | 24/32/44 mm (up to 54 mm with STV®) |
Pricing and specification data are from OKNODOM product cards. The exact price is calculated individually by a technologist after measurements.
Important: Both profiles are 6-chamber systems based on a CaZn stabilizer. The difference is not in the number of chambers, but in the profile geometry, seating depth, and thermal conductivity coefficient. The S 9000 is designed for heavier glass units (up to 54 mm) and has better energy efficiency indicators — which is why it is chosen for zones with maximum heat loss.
Profile cross-sections
- Cross-section of the Gealan S 9000 profile. 6 chambers, 82.5 mm installation depth, glass unit up to 54 mm with STV®.
- Cross-section of the Gealan S 8000 profile. 6 chambers, 74 mm installation depth, glass unit up to 44 mm (up to 54 mm with STV®).
48 mm glass unit: what lies behind the number
In the review, the client highlights: “a powerful three-pane glass unit with energy saving inside, a thermal spacer, and sun protection glass outside.” Behind this phrasing are four separate technologies, and each solves a specific task:
Three-pane 48 mm unit — thicker than the standard 32 mm unit. Thanks to the increased air gap, it retains heat better and dampens street noise. For Gealan S 9000, the maximum glass unit thickness is 54 mm (with the STV® dry bonding system); for S 8000 — 44 mm as standard, up to 54 mm with STV®.
Energy-saving glass (i-glass, low-E) on the inside — a thin coating of silver oxides that reflects thermal radiation back into the room in winter. Reduces heat loss through the glass by 40–50% compared to regular glass.
Warm distance frame (thermal spacer) — a plastic or composite spacer between the panes instead of the standard aluminum one. Aluminum acts as a cold bridge along the glass unit contour, which can cause condensation at the edges of the glass in winter. The warm frame eliminates this effect and increases the overall energy efficiency of the window by 10–15%.
Sun protection glass (selective, solar control) on the outside — reduces the penetration of infrared radiation in summer by 30–60%, but doesn’t darken the room like regular tinting. In Odesa, where summer temperatures reach +35–40°C, this is critically important for reducing the load on air conditioning.
Each technology individually yields a moderate effect, but together — it’s the difference between a window that simply keeps the rain out and a window that actually saves on heating and cooling year-round. In the conditions of the Odesa region with its maritime climate, strong winds, and temperature drops from -20°C to +40°C, such a package is not a luxury, but a necessity.
Hardware and decor — where people usually skimp
On the site, custom-designed anodized aluminum handles were used — identical on the windows and doors, and the decorative elements were matched to the same anode color so the facade wouldn’t look “assembled from different sets.” The hardware is Siegenia Titan AF with anti-burglar mushroom cams, complying with European protection standards classes RC1 and RC2.
The windowsills are glossy, with an anti-vandal coating, and underneath them is a special warm sill beam, which further reduces heat loss in the area where the windowsill meets the wall. This is a detail that many contractors ignore, but in vain — this is exactly the zone where condensation and mold most often form.
Lamination color palette
OKNODOM offers profile lamination in 50+ colors and textures. As in the case study above, the main guideline when choosing a color is not personal taste, but the roof and facade of the house: a window color that “clashes” with the roof or walls ruins the impression even of a technically perfect installation.
- Lamination “golden oak” — natural wood texture.
- Lamination “natural oak” — a universal choice for private houses.
- Lamination “gray” — for modern minimalist facades.
- Lamination “white” — a classic, suits any facade.
Installation: where half the problems are solved
In the review, the client noted the installers — Roman and Slavik — calling them “professionals in their field.” A small detail that in practice solves half the problems with windows: even a properly selected profile performs poorly with careless installation.
At OKNODOM, window installation in Odesa is carried out using Euro-installation technology: the opening is treated with a primer, seams are sealed with STIZ tapes outside and inside. This protects against drafts, moisture, and freezing. Standard installation is from 2,000 UAH, Euro-installation with STIZ is from 3,800 UAH.
Price: comparison with the market
The client separately compared the cost of such a configuration with competitors — according to him, the price from other companies for a similar set (profile, glass unit, hardware of the same level) was noticeably higher.
Estimated prices for 2026 according to OKNODOM data:
- Gealan S 8000: from 7,000 UAH/m²
- Gealan S 9000: from 11,800 UAH/m²
- Gealan S 9000 Acrylcolor: from 14,000 UAH/m²
The exact price for the Gealan S 9000/S 8000 set with a 48 mm package is calculated by a technologist after a free measurement — just as in this case study. The price depends on the opening configuration, glazing area, lamination type, hardware, and installation complexity.
eRecovery Program: Gealan windows with state compensation
Important addition: OKNODOM is an official participant in the state compensation program eRecovery (єВідновлення). Gealan S 9000 and S 8000 systems have energy efficiency certificates and meet the program’s criteria.
Compensation amounts under the program:
- Metal-plastic windows — up to 5,400 UAH/m²
- Glass units — up to 4,700 UAH/m²
- Glass replacement — 850–1,000 UAH/m²
Residents of Odesa and the Odesa region whose homes were damaged as a result of hostilities can receive partial or full compensation for the cost of energy-efficient Gealan windows. The process is simple: measurement → calculation → paperwork → installation → compensation. OKNODOM has already processed over 300 applications under the eRecovery program.
More details about the eRecovery program →
What this case study ultimately shows
A 4.9★ rating out of 852 is not a one-off fluke, but the result of a process where, at the measurement stage, the technologist actually selects the profile for the specific house, rather than selling the same configuration to everyone. For a private house in the Odesa region, this means: a different profile on different floors is a normal engineering practice, not a reason to question the contractor.
Key takeaways:
- The profile is selected for the opening, not from a catalog. S 9000 for the first floor, S 8000 for the second is a conscious decision, not cost-cutting.
- The glass unit determines more than the profile. 48 mm, three panes, i-glass, warm frame, sun protection — the complex provides real savings.
- Installation is 50% of the result. Euro-installation with STIZ, warm sill beam, seam sealing.
- Hardware and decor are not the place to skimp. Siegenia Titan AF, anodized handles, color unity of the facade.
- eRecovery makes premium affordable. State compensation up to 5,400 UAH/m² reduces the cost of energy-efficient Gealan windows.
Photos of the object
All photos of the client’s house are used with his written consent.
General view of the facade. First floor — Gealan S 9000 (82.5 mm), second — Gealan S 8000 (74 mm). “Dark oak” lamination matching the roof color.
Detail: profile in “dark oak” lamination, black weatherstripping, glossy windowsill.
Windows and doors with matching anodized handle colors — the facade reads as cohesive.
Related materials:
- Gealan profile in Odesa — full catalog
- Gealan S 8000 — technical specifications and price
- How much it costs to install a window in Odesa in 2026
- Window installation in Odesa — Euro-installation and standard
- Price list for hardware and components
- eRecovery Program — compensation for windows
- OKNODOM homepage
Information
Call for a free consultation and to call a measurer:
📞 0 800 33 10 30 (toll-free in Ukraine)
📞 096 533 34 30
📞 080 033 29 69
💬 097 033 05 65 (Viber)
Our offices in Odesa
Main office and showroom:
📍 4a Zheliabova St. (Peresypskyi district)
Mon–Fri: 9:00 AM – 6:00 PM | Sat: 10:00 AM – 3:00 PM
📌 Directions on Google Maps
Office 2:
📍 31 Henerala Petrova St.
Mon–Fri: 9:00 AM – 6:00 PM
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Office 3:
📍 58a Akademika Viliamsa St.
Mon–Fri: 9:00 AM – 6:00 PM
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Office 4:
📍 140a Liustdorfska Road
Mon–Fri: 9:00 AM – 6:00 PM
📌 Directions on Google Maps
Measurer visit is free throughout Odesa and the Odesa region. Service areas: Odesa, Mykolaiv, Kherson and the region.
The article was prepared based on a real client review (5★, published on Google Maps). The technical specifications of the profiles were verified according to data from the manufacturer GEALAN Fenster-Systeme GmbH and OKNODOM product cards. Photos of the object are used with the client’s consent. Publication date: July 14, 2026.
