Traditional heat cabin

Almost Heaven SaunasTimberline Outdoor Sauna, Harvia Collection

Name: Almost Heaven Saunas Timberline Outdoor Sauna, Harvia Collection
Brand: Almost Heaven Saunas
Price: 17803.00 USD

Spruce outdoor cabin with a terrace and a 9 kW Harvia smart heater

By Porsche Ma Facts checked Oct 13, 2026

Source-based analysis, not hands-on testing. Our method

Cofounder of Superhuman Chambers · About the author. General information, not medical advice. No independent clinical review is claimed.

The verdict

The Timberline Scala is a Nordic spruce outdoor cabin with a terrace, a 9 kW Harvia heater and app control, for $17,803. It suits a family with a flat yard and room in the panel for a 240 V, 50 A circuit. The catch is what comes on top: an electrician, a foundation, roofing and 8 to 12 weeks of lead time.

The trade-off

The roof ships with felt only, heating elements carry a 1-year warranty, and opened kits can't be returned.

Almost Heaven Saunas Timberline Outdoor Sauna, Harvia Collection, manufacturer product image — Photo: Almost Heaven Saunas. Timberline cabin exterior from the manufacturer’s model-specific article. The selected heater is not visible.Source ↗

Model reviewed: Medium (Scala) 4 Person with the 9kW Spirit Smart Heater + Fenix; the 8kW Spirit build is no longer sold

$17,803

US price, checked Oct 13, 2026

Check price at Almost Heaven Saunas

No affiliate commission on this link. Check the exact variant before buying.

About this price

The 8 kW Spirit build reviewed before isn't sold any more. Almost Heaven now sells the Timberline as the Timberline Outdoor Sauna, Harvia Collection, in two sizes. The old product link didn't load. The old review recorded $16,268 for the earlier cabin with that heater. This review covers the closest current build: the Medium (Scala) size with the 9 kW Spirit heater and Fenix control. $17,803 is the list price on the official page. The regular price shown is the same, and the Timberline isn't in the site's 20% Fall Favorites sale. The cheapest Scala build is $14,233, with an 8 kW KIP heater with dials. The 9 kW Virta and M3 wood kit builds cost the same $17,803, and the Legend 150 wood kit build costs $19,946. The larger Yukon, which adds a changing room, costs $26,220 to $27,649. Almost Heaven's online store lists every build as available. The price is before tax, and the product page says shipping is calculated at checkout.

A GOOD FIT FOR

You have a level outdoor spot about 11 1/4 by 10 1/4 ft and can run a 240 V, 50 A circuit to it.

A household of four to six with a level outdoor spot of about 11 1/4 by 10 1/4 ft and a prepared foundation, or a plan for one
You can add a 240 V circuit on a 50 A breaker and have a licensed electrician lined up
You want app control and presets included instead of buying a controller separately
You'd rather have a cabin with a wrap-around terrace and a panoramic window than a barrel

THINK TWICE IF

You need it soon: lead time is 8 to 12 weeks, plus assembly
Your panel can't take a 50 A double-pole breaker (the M3 wood-burning build costs the same)
You might want to return it after opening the boxes
You want a finished roof out of the box
You want a changing room: that's the Yukon, from $26,220
You live outside the contiguous US, where the warranty doesn't apply

What still needs checking

The assembled weight, number of boxes and freight cost to your address
Whether shipping is free: the product page says it's calculated at checkout, the shipping policy says curbside delivery is included
The 9 kW Spirit's current draw and the room size Harvia rates it for
Whether the finished sauna or the Fenix control carries a safety listing, and the heater's UL file number
How many people the benches seat in practice
What the bulb-less lamp fixture needs for power, since the Timberline manual gives no voltage
Whether the MyHarvia Control Upgrade costs extra
How often the stones need replacing
What the electrician, foundation and roofing will cost

The practical details.

Specifications for Almost Heaven Saunas Timberline Outdoor Sauna, Harvia Collection
Exact variant	Medium (Scala) 4 Person with the 9kW Spirit Smart Heater + Fenix; the 8kW Spirit build is no longer sold
Seating	Up to six in the description, 4 Person in the size name. Three benches: two 74 3/4 in long, one 51 3/8 in long
Interior	75 3/16 W × 75 3/16 D × 76 11/16 H in
Heater	One 9 kW Harvia Spirit with stones and a Fenix 4.3 in touchscreen (Wi-Fi, MyHarvia 2 app, three presets)
Electrical	240 V single-phase, wired by a licensed electrician, 50 A double-pole breaker, 8/2 copper wire, no GFI
Heat-up	About 45 to 60 minutes to at least 170°F at head height; automatic shutoff after one hour
Outside size	135 1/4 W × 123 1/4 D × 106 3/4 H in, with a wrap-around terrace
Delivery	Ships in 8 to 12 weeks by freight to the curb; moving it from there is up to you
Made in	Romania
Dimensions	Scala size. Outside: 135 1/4 W × 123 1/4 D × 106 3/4 H in. Inside: 75 3/16 W × 75 3/16 D × 76 11/16 H in. The manual lists three benches, 3 1/2 in thick: two 74 3/4 in long (23 5/8 and 19 5/8 in deep) and one 51 3/8 in long (23 5/8 in deep), plus two backrests. Almost Heaven doesn't publish the weight. The manual says the base must hold 1,000+ lb with people inside.
Materials	Nordic spruce inside and out, in 1 5/8 in planks, with linden interior fittings. The window is double-glazed and fixed. The outer wooden door locks, and Almost Heaven describes the doors as insulated. The roof ships with roofing felt only, and the manual says to finish it with shingles or metal roofing that you buy separately. Don't paint or varnish the outside. If you want a finish, use a stain with a UV inhibitor. Don't treat the inside unless a product is approved for saunas. Almost Heaven lists the country of origin as Romania.

Before you buy

InstallationThe 9 kW Spirit heater runs on 240 V single-phase power and has to be wired…

The 9 kW Spirit heater runs on 240 V single-phase power and has to be wired by a licensed electrician. Almost Heaven's Spirit guide calls for a 50 A double-pole breaker and 8/2 copper wire rated 90°C. Don't put it on a ground fault interrupter (GFI). The guide cites the UL listing and says a GFI will damage the heater. The heater's power unit goes in a dry spot or a ventilated weatherproof enclosure, never inside the sauna. Almost Heaven's FAQ says cabins need a prepared foundation, and concrete is typically best. The manual asks for a firm, level base that holds 1,000+ lb, with pavers if it sits on the ground, plus a moisture barrier and anchoring. It also says to check local building codes. The tool list includes a cordless drill, rubber mallet, level, ladder and a table or skill saw. Heavy pieces take two or more people to lift. No assembly time is given. It ships in 8 to 12 weeks with curbside delivery. Larger models come by flatbed, which you unload yourself, piece by piece with 2 to 4 people or with a forklift. The LED light bar's manual says its power supply plugs into a 110 V outlet. Almost Heaven's installation service starts at $1,400, and electrical hookup costs extra.

WarrantyAlmost Heaven gives a limited lifetime warranty against manufacturing defects…

Almost Heaven gives a limited lifetime warranty against manufacturing defects on the sauna's components. It excludes normal weathering, wear and tear, improper use or assembly, and weather events. Its warranty page covers heating elements for 1 year and other heater components for 5 years. The Spirit guide mentions only a 1-year heater warranty. Harvia's Spirit manual adds free repair work on heaters returned within 5 years, though parts may be charged after year one. That manual also voids the heater warranty if the registration form isn't returned within 15 days of purchase. Heater coverage excludes incorrect electrical connections, not following the maker's recommendations, poor stone placement, and corrosion from saltwater or hard water. Electrician costs for warranty claims aren't covered. The warranty doesn't transfer to a second owner and applies only to saunas in the contiguous United States.

ReturnsYou can return it within 30 days of receipt only if it's unopened…

You can return it within 30 days of receipt only if it's unopened and in its original packaging. Assembled units can't be returned. Almost Heaven charges a 25% restocking fee and takes both the original and return shipping out of the refund. Credit comes after the returned items are inspected.

More about this assessment

The Timberline Scala is a Nordic spruce outdoor cabin with three benches, a wrap-around terrace and a panoramic window. This build comes with a 9 kW Harvia Spirit heater and Fenix control, at $17,803. A licensed electrician has to wire the heater to 240 V on a 50 A double-pole breaker, and it needs a prepared foundation. It ships in 8 to 12 weeks with roofing felt only, so shingles or metal roofing are extra. The cabin's components carry a limited lifetime warranty against manufacturing defects, but heating elements get 1 year.

Strengths on paper

Inside it's 75 3/16 in square and 76 11/16 in high, with two benches 74 3/4 in long
The 9 kW Spirit, stones, LED light bar and Fenix touchscreen with Wi-Fi come in the price
Remote start through the MyHarvia 2 app activates only once the door is closed
The Scala has a wrap-around terrace and a panoramic window
The Scala is sold with a choice of five heaters, including two wood-burning kits
Lifetime coverage on sauna components against manufacturing defects
Assembly and heater manuals are published before you buy

Limitations

$17,803 before the electrician, foundation, roofing and any shipping charge
Needs a licensed electrician for a 240 V, 50 A circuit, and that cost isn't quoted
The roof ships with felt only, so shingles or metal roofing are extra
Seating is listed as six in the description and four in the size name
Heating elements are covered for 1 year, and electrician costs on claims are yours
Opened or assembled kits can't be returned, and returns cost 25% plus shipping both ways
Delivery stops at the curb, and a flatbed load is yours to unload with 2 to 4 people or a forklift
Neither Spirit manual gives the 9 kW heater's current draw or the room size it's rated for

What it costs to own.

Adjust the assumptions for your use. Missing costs stay unknown.

PLAN YOUR OWNERSHIP COSTS

What will it cost to own?

Change the assumptions to fit your use. Leave an unknown cost blank. Add water, subscriptions, cleaning, shipping and taxes if they apply. Use average operating power, not the maximum rating.

Purchase price ($)Installation / accessories ($)Annual consumables ($)Average operating power (W)Hours per dayAnnual other costs ($)Electricity ($/kWh)Years

3-year known subtotal

$17,803.00

Incomplete: installation, annual consumables, other annual costs, energy use. This is not the full ownership cost.

Energy component: Unknown

Purchase + installation + years × (annual consumables + annual other) + watts/1000 × hours/day × 365 × years × $/kWh. Annualized allowances, not an exact replacement schedule. Excludes taxes, shipping, finance and resale unless entered.

Replacement parts & cost assumptions

Recorded recurring parts and refills:

Rounded sauna stones, 33 lb bag: $168. The Spirit guide says to use only rounded sauna stones. Almost Heaven sells a 33 lb bag of rounded stones for $168. Stones come with the heater. Almost Heaven's Spirit page says it holds over 120 lb of stones. Harvia's manual gives about 50 kg (about 110 lb) for the 6 and 8 kW models and doesn't cover the 9 kW. Either way, a full refill takes at least four bags. The $135 bag of standard 40 lb stones doesn't say whether they're rounded. Harvia says to rearrange the stones at least once a year and keep spares, since the pile settles. Neither Harvia nor Almost Heaven gives a replacement interval for this heater.

Purchase is the $17,803 list price for the Scala with the 9 kW Spirit and Fenix. The product page says shipping is calculated at checkout, while the shipping policy says curbside delivery is included.
Installation is unknown. You need a licensed electrician for a 240 V circuit on a 50 A breaker, a prepared foundation (concrete is typically best), and shingles or metal roofing. Almost Heaven's assembly service starts at $1,400, and electrical hookup costs extra.
Annual consumables are unknown. Rounded stones cost $168 per 33 lb bag, and Almost Heaven says the heater holds over 120 lb. No replacement interval is given for the Spirit.
9,000 W is the heater's rating, not an average. At full power, the 45 to 60 minute heat-up alone uses about 6.75 to 9 kWh. Almost Heaven doesn't state typical daily use, so yearly energy isn't estimated.
No subscription is listed. The Fenix page mentions remote control "with the MyHarvia Control Upgrade" without saying whether that costs extra, so other annual costs stay unknown.

Evidence & sources.

Are saunas good for you? Our evidence review grades the research as Moderate. That grade is about the claim, not about this product.

Manufacturer claimDimensions, heater, electrical needs, materials and prices come from Almost Heaven's product page, store listing, Timberline manual and Spirit guide^1–4 From the maker's pages and manuals. None of these figures was measured independently.
Manufacturer claimThe Timberline reviewed before, with an 8 kW Spirit heater, is no longer sold^{2, 7, 8} The old product link didn't load. The current Timberline lists Scala and Yukon sizes, and its heater choices don't include an 8 kW Spirit. The manuals page files the Timberline under its Heritage Collection.
Manufacturer claimAlmost Heaven's Spirit guide says the heater is UL certified^{4, 12} No file number is given, and Harvia's Spirit manual names no listing. UL's directory wasn't checked. Nothing names a listing for the finished sauna or the Fenix control.
Manufacturer claimAlmost Heaven makes no EMF claim for the Timberline^{1, 4, 12} The product page, Spirit guide and Harvia manual give no EMF figure or test. No independent EMF measurement of this model is cited.
Manufacturer claimThe manuals cap a session at 30 minutes and say to ask a doctor about any health limits first^{3, 4} The Timberline manual suggests 5 to 15 minute visits at a typical 160 to 185+°F, with no alcohol, smoking or exercise in the sauna. It says people with pre-existing conditions shouldn't use it alone. These are safety instructions, not evidence of a health benefit.