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Finland's best sauna supplies online store 2026

Someone ordering sauna supplies online asks how quickly the parcel arrives, how long the product can be returned and who pays for the return. These decide 50 points out of a hundred.

Checked 18.10.2026 · basic metrics measured 15.8.2026 How the scores are calculated →

Score shows how the company does on our comparison criteria, on a 0–100 scale. Rankings cannot be bought.

1

Saunakauppa.com SUOMEN PARAS 2026

saunakauppa.com · Mika Kuusela Oy (PRH 0566115-8), business ID (Y-tunnus) shown in the delivery terms, a domestic online shop for sauna supplies from a multi-brand reseller (sauna textiles, scents, sauna buckets, soaps) with free delivery on orders over 100 euros (saunakauppa.com)

73.4SCORE
Delivery time100
Return period100
Return costs0

Basic metrics · 66.8

Digital quality61
Transparency65
Reachability60
AI quality score83

+ Product prices are visible in product listings and on product pages without logging in, and stock information (Available immediately / Shipped in 1-2 days) is given under product availability

Basic metrics: 66.8, rank 2 · ▲ 1 place

2

Rennosti

rennosti.com · Digikor Oy (PRH 2632894-4), business ID (Y-tunnus) shown on the website, Hyvinkää-based sauna product reseller and brick-and-mortar shop (Saunakauppa.eu, SAUNACUBE tent saunas) (rennosti.com)

47.0SCORE
Delivery time91
Return period0
Return costs0

Basic metrics · 54.1

Digital quality60
Transparency58
Reachability15
AI quality score77

+ Product prices are shown in the product listing and on product pages without logging in (for example Kivikiuas Honey 8 kW 659 euros and SAUNACUBE tent saunas), and the heater's output (kW) is stated in the product name

Basic metrics: 54.1, rank 4 · ▲ 2 places

3

Narvi

narvi.fi · Narvi Oy (PRH 2087049-2), business ID (Y-tunnus) displayed, website of a Finnish sauna heater manufacturer whose online shop (kauppa.narvi.fi) sells wood-burning and electric sauna heaters, built-in stove pots and fireplaces (narvi.fi)

37.8SCORE
Delivery time0
Return period0
Return costs0

Basic metrics · 75.5

Digital quality73
Transparency85
Reachability55
AI quality score84

+ The sauna heater manufacturer's own online shop (kauppa.narvi.fi) shows product prices without logging in (for example accessories 73.28 euros and 80.58 euros), and the product range covers wood-burning and electric heaters, masonry-set cast-iron pots, chimneys and fireplaces

Basic metrics: 75.5, rank 1 · ▼ 2 places

– Delivery time: Narvi's site has no shopping cart: order terms were not found on the front page, product page, reseller page or warranty terms.

4

Kiuas.fi

www.kiuas.fi · IKI-Kiuas Oy (PRH 2042076-6, active), the official manufacturer's online shop for IKI sauna heaters: wood-burning and electric heaters, flues, sauna accessories and lighting. The root domain kiuas.fi redirects to the www address (www.kiuas.fi)

37.6SCORE
Delivery time0
Return period0
Return costs50

Basic metrics · 65.2

Digital quality65
Transparency82
Reachability15
AI quality score88

+ Sauna heater prices are visible on product pages without logging in (for example Pilari-IKI 9 kW electric sauna heater 1,530.00 euros), and the power output is part of the product name

Basic metrics: 65.2, rank 3 · ▼ 1 place

5

Harvia

webshop.harvia.com · Harvia Finland Oy (PRH 0176654-2, formerly Harvia Oy; the group's parent company Harvia Oyj 2612169-5), the consumer online shop of Finland's largest sauna manufacturer, focused on spare parts and sauna accessories; complete sauna heaters are sold mainly through resellers (webshop.harvia.com)

33.6SCORE
Delivery time36
Return period0
Return costs0

Basic metrics · 51.2

Digital quality72
Transparency40
Reachability15
AI quality score71

+ Harvia's own online shop is a genuine consumer shop operating in Finland, with a shopping cart, checkout, and published delivery, exchange, return and complaint terms

Basic metrics: 51.2, rank 5 · no change

– Return costs: Return costs are not stated in the delivery terms or on the cancellation and returns page.

What decides the purchase decision

Weights are fixed. All companies are measured on the same scale. Read the full methodology.

Buying motives and weights

100 p
Buying motiveWhat is measuredScaleWeight
Delivery time
QUESTIONHow quickly does the order arrive?
The longest figure for the usual delivery time promised in the terms, in days.3 days or less = 100 points, 14 days or more = 0, in between directly proportional.22 p
Return period
QUESTIONHow long can I return the product?
Number of days within which the product can be returned.30 days or more = 100 points, 14 days (statutory minimum) = 0, in between directly proportional.18 p
Return costs
QUESTIONWho pays for the return?
Split of return costs according to the terms.Shop pays = 100, shop refunds part of the delivery costs = 50, customer pays = 0.10 p
Basic metricsDigital quality, transparency, reachability and AI quality scoreBasic metrics × 0.550 p

Notes

About this comparison

We scored 5 online shops for sauna products and sauna heaters on 20 metrics: technical quality, transparency, reachability and AI quality. The most important question: can you see the heater's price, power and the sizing guide for sauna size, as well as the delivery and return costs for a large product, before you enter your payment card details?

What transparency means in this category

Product price displayed without logging in (25), heater output and sauna size sizing guide stated (15), delivery costs for a large product and the free delivery threshold stated (15), right of return and cancellation publicly available (15), installation and electrical work requirements of the electric heater stated (10), product warranty stated (10), business ID (Y-tunnus) or responsible company clearly stated (10)

Transparency is 30% of the basic metrics, i.e. 15% of the total points · these metrics make up its 100 points · the full formula and the other pillars

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.

Sauna heater sizing and delivery of a large product are the industry's pain points. The power of the sauna stove must be dimensioned to the cubic volume of the sauna, and the delivery and return costs of a heavy stove can be high. The price, the power and sauna size dimensioning guide, the installation and electrical work needs of an electric stove, and the delivery and return terms should be visible before purchase. The comparison rewards shops that state these openly on the product page and in the delivery terms.

Some are multi-brand retailers, others are manufacturers' own online shops. Saunakauppa.com and Rennosti are resellers of several brands, whereas Kiuas.fi (IKI), Narvi and Harvia are sauna heater manufacturers' own online shops. All have a Finnish business ID (Y-tunnus). The business ID (Y-tunnus) metric assesses how clearly the responsible company is shown on the site.

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