A detached house owner replacing windows asks how long the warranty on windows and doors is, whether the insulating glass lasts and whether the price of the renovation is shown before one has to request a quote. These decide 50 points out of a hundred.
pihla.fi · Pihla (Pihla Group Oy, business ID (Y-tunnus) 1882624-9) is a Finnish window and door manufacturer belonging to the Nordic Inwido group. The windows are made to measure in Ruovesi and sold through the online shop and a network of resellers.
74.5SCORE
Price is shown before a quote request100
Window structure warranty100
Insulating glass tightness warranty0
Guarantee that the front door stays straight67
Basic metrics · 73.1
Digital quality66
Transparency82
Reachability60
AI quality score83
+ Window model prices are shown in the online shop in euros as from-prices (e.g. A model from 213.10 euros, T model from 460.00 euros, fire window from 1,034.10 euros), so the buyer gets a price range without requesting a quote
Basic metrics: 73.1, rank 1 · no change
– Insulating glass tightness warranty: Pihla's warranty page (Quality and warranty) and the warranty FAQ do not state the length of the insulating glass tightness warranty.
kaski.fi · Kaskipuu (Kaskipuu Oy, business ID (Y-tunnus) 3098737-9) is a Finnish window and door manufacturer that operates under the domain kaski.fi and has offices in Vantaa, Pirkkala, Raisio, Oulu and Kuopio.
73.2SCORE
Price is shown before a quote request100
Window structure warranty20
Insulating glass tightness warranty100
Guarantee that the front door stays straight100
Basic metrics · 65.5
Digital quality73
Transparency62
Reachability60
AI quality score65
+ Energy efficiency is stated in figures: the most energy-efficient window has a U-value of 0.66 and an E-value of 100 kWh/m2
alavusikkunat.fi · Alavus Ikkunat (Alavus Ikkunat Oy, business ID (Y-tunnus) 1796128-9, Alavus) is a Finnish window and door manufacturer that makes its products to order and also sells them online at euro prices.
68.2SCORE
Price is shown before a quote request100
Window structure warranty30
Insulating glass tightness warranty50
Guarantee that the front door stays straight67
Basic metrics · 68.1
Digital quality85
Transparency56
Reachability60
AI quality score69
+ Window prices are shown in euros online (e.g. MSEA Energy 1+2 opening window 210.11 euros, EKA Arctic fixed window 195.99 euros, incl. VAT 25.5%)
skaala.com · Skaala (Skaala IFN Oy, business ID (Y-tunnus) 2656258-9, Ylihärmä) is a family-owned Finnish window and door manufacturer. The windows are made to order in Ostrobothnia.
63.0SCORE
Price is shown before a quote request50
Window structure warranty20
Insulating glass tightness warranty100
Guarantee that the front door stays straight67
Basic metrics · 71.3
Digital quality74
Transparency68
Reachability75
AI quality score69
+ Window U-values and energy classes are stated concretely: best U-value 0.6, Arvo+ window in class A and Aarre+ window with an A++ rating
lammin.fi · Lammin Ikkuna (Lammin Ikkuna Oy, business ID (Y-tunnus) 1454666-1, Lammi) is a Finnish window and door manufacturer founded in 1972, which also sells windows through its own window web shop.
42.9SCORE
Price is shown before a quote request50
Window structure warranty0
Insulating glass tightness warranty0
Guarantee that the front door stays straight0
Basic metrics · 65.8
Digital quality76
Transparency66
Reachability45
AI quality score71
+ In the window web shop, prices are shown in euros even before logging in (e.g. from 281 euros, from 291 euros), so the price level can be found out through self-service
Basic metrics: 65.8, rank 4 · ▼ 1 place
– Structural warranty on windows: Warranty terms were not found on the front page, the wooden windows product page, the FAQ page, the delivery and installation page, the payment methods page or the sitemap.
The buying motives of these services could not be checked; the reason is shown for each one. They are not on the list as poor performers but as unscored. The result of the basic metrics is shown for comparison.
profin.fi · Profin (Profin Oy, business ID (Y-tunnus) 2461589-4) is a Finnish manufacturer specialising in large glass walls and made-to-measure windows.
NOT MEASURABLE
Digital quality61
Transparency54
Reachability15
AI quality score63
+ U-values are stated by exact size (e.g. 2000x2180 mm Active 0.73 / Clear 0.79 W/m2K; 4000x2600 mm Active 0.64 W/m2K), which is the most transparent presentation of energy data in the industry
– The site blocks automatic reading (bot protection).
QUESTIONIs the price of the renovation shown in euros before I have to request a quote?
Whether the website publishes euro price examples for window renovation of a detached house.
Yes = 100 (euro examples for a detached house), partly = 50 (only a price calculator or a housing company example), no = 0.
20 p
Window structure warranty
QUESTIONHow long a warranty is given for the window?
Window structural or product warranty in years. Separate rot-resistance or surface warranties are not counted.
10 years or more = 100 points, 0 years = 0, in between directly proportional.
12 p
Insulating glass tightness warranty
QUESTIONHow long is the moisture-tightness of the glass unit's cavity guaranteed?
Moisture-tightness warranty of the insulating glass unit's cavity, in years.
10 years or more = 100, 0 years = 0, in between directly proportional.
9 p
Guarantee that the front door stays straight
QUESTIONHow long is the front door guaranteed to stay straight?
Front door straightness guarantee in years.
15 years or more = 100, 0 years = 0, in between directly proportional.
9 p
Basic metrics
Digital quality, transparency, reachability and AI quality score
Basic metrics × 0.5
50 p
Notes
The comparison includes six Finnish window manufacturers. The metrics are warranty periods and the publicity of price information, because they can be found on the manufacturers' own pages.
Manufacturers state warranties for different products and under different names, so the same item is measured for each: the window's structural warranty, the insulating glass's seal warranty and the exterior door's straightness warranty. Information that was not found gets zero points and the reason is shown.
Profini's site blocks automatic reading, and it was not scored.
About this comparison
We scored 6 Finnish window manufacturers on 23 metrics. The most important question for the buyer: are the window's price, U-value, warranty, delivery time and materials already visible on the site, or are they only revealed on a quote request or from a retailer?
A window renovation or the windows of a new build is a big and long-lasting purchase, but manufacturers' websites tell very differently about what the buyer gets. Some show model-specific prices in an online shop, some state the energy class or exact U-value, and some leave both the price and the technical data to a quote request. We compared Finnish window manufacturers on how much information relevant to the buyer is visible on the site already before contact.
What transparency means in this category
Window prices, price examples or online shop prices publicly displayed (not only a quote request) (24), window U-value or energy class stated on the site (14), warranty (in years, e.g. rot-resistance guarantee) stated on the site (12), material and construction details shown (wood, aluminium, glazing, frame depth) (10), delivery time or delivery process stated (8), made-to-measure option and available dimensions or colours stated (8), stores or resellers listed or searchable (8), installation service and its terms stated (6), business ID (Y-tunnus) or operating company shown on the site (6), contact details shown (phone or e-mail) (4)
How to read the comparison correctly: Half of the points come from buyer's questions, i.e. things the buyer finds out before deciding. The other half measures how openly the company publishes its prices, terms and contact details. Clear differences in points indicate a genuine difference: one tells you the price immediately, another only after logging in. Close scores should not be read as a ranking order, because every measurement has a margin of variation. The measurement accuracy and the full calculation formula are open in the methodology.
Customer experience is brought into the assessment separately. We also collect customer feedback and customer experiences about companies through separate surveys. The survey results will be added to the overall assessment later.
A window buyer rarely compares price alone: energy efficiency (U-value), warranty length and delivery time are equally decisive.
Some manufacturers publish window prices in the online shop, others disclose the price only in a quote or through a reseller.
All windows are usually made to measure, so transparency about dimensions, materials and models is essential for the buyer.
Comparison guide
What to consider in the comparison
The price of a window depends on the model, dimensions, glazing, colour and any installation, so manufacturers present it in different ways. Some have a window online shop where model-specific "from" prices are shown in euros, while for others the price only emerges from a quotation.
Energy efficiency is stated either as an energy class (A, A++) or as an exact U-value (for example 0.66-0.79 W/m2K). An exact U-value tells you more than a class alone, but not all manufacturers publish either.
Warranty length varies a lot: some windows have a 25-year rot-resistance warranty, others state only a shorter tightness warranty or mention a warranty without a number of years.
Almost all windows are made to order, so the available dimensions, colours and materials (wood, wood-aluminium, glazing construction) are essential things for the buyer to compare.
Some manufacturers sell directly and install themselves, others operate through a reseller network. The visibility of shops and resellers and the terms of the installation service affect how easy the purchase is to arrange.
How Suomen Paras assesses and scores
Every company is measured with the same public formula: half of the points come from buyer's questions and half from basic metrics, which have four pillars: technical quality, transparency, reachability and AI quality score. Ranking cannot be bought, and you can see the origin of each point on the company's profile. Read the full methodology →
Expert tips
Check whether a model-specific starting price is shown in the online shop. It gives a price range without a quote request, even though the final price is refined by dimensions and accessories.
Compare the exact U-value instead of the energy class, if it is stated: a lower figure means better thermal insulation and lower heating costs.
Check the warranty length in years and what the warranty covers (rot resistance, tightness, installation). A long rot-resistance warranty shows confidence in the durability of the structure.
Find out the delivery time and whether installation is included in the price or charged separately. The delivery time for made-to-measure windows can be several weeks.
Check the operating company and business ID (Y-tunnus) on the site. It tells you who you are making the contract with and whether the warranty provider is an established manufacturer.
Frequently asked questions
Why is the price of a window not shown on many manufacturers' websites?
Windows are usually made to order, and the final price is affected by model, dimensions, glazing, colour and installation. Some manufacturers nevertheless show model-specific from-prices in the online shop, so the buyer gets a price range without a separate request for a quote.
What does U-value mean in a window?
The U-value describes the window's heat transmittance: the smaller the number, the better the thermal insulation and the less heat escapes through the window. In the most energy-efficient windows the U-value of the whole window is currently around 0.6-0.8 W/m2K.
Should you choose a wooden or a wood-aluminium window?
A wood-aluminium window has a wooden interior and an aluminium exterior cladding that is almost maintenance-free and withstands weather better than a painted wood surface. A plain wooden window requires regular maintenance of the outer surface but is cheaper. The choice depends on willingness to do maintenance and on budget.
Is installation included in the window price?
Not automatically. Some manufacturers offer installation separately and some as a turnkey service. Always check whether the stated price is for the product alone or includes measurement and installation.
Are you listed and would like to rank higher?
The free pre-analysis shows every item where your company loses points and which rank fixing it is enough for. The paid analysis shows what the items are and how to fix them.
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