Almost Heaven has been making barrel saunas in West Virginia for years, and the Essex is one of their most popular models — a 4-person classic barrel built from real cedar, with a Harvia heater, for around $6,700. Barrel saunas are the entry point for a lot of people into traditional sauna, and Almost Heaven builds a good one. But "a good barrel" and "a well-designed sauna" aren't quite the same thing, and the reason comes down to geometry. I'm a sauna designer, and I'm going to grade the Essex against the same engineering standards I use on custom builds. No brand loyalty, no sponsorship — just the data.

I cross-referenced specs from Almost Heaven's product information, Select Saunas' listing, and the manufacturer's published features and warranty.

Overview

The Essex is a classic barrel sauna — a horizontal cylinder of cedar staves with two opposite-facing benches inside. It's 6 feet in diameter by 7 feet long, rated for four people, and built from Western Red Cedar using Almost Heaven's ball-and-socket lumber profile at 1-3/8 inches thick. It ships with a Harvia KIP80B 8 kW electric heater as standard, and it's the smallest Almost Heaven barrel that can also take a wood-burning stove.

You get stainless steel bands and hardware, tempered glass, an interior LED light, weather-proof support cradles, and sauna stones included. It's made in the USA and carries a limited lifetime warranty on the sauna room itself. Price is around $6,718.

What the Essex Does Well

Real Western Red Cedar

This is the standout. The Essex is built from genuine Western Red Cedar, which is one of the best woods you can put in a sauna. It naturally resists moisture and rot, stays comfortable to the touch even at high heat, and smells fantastic. A lot of kits this size cut to hemlock or spruce. Almost Heaven didn't, and it shows in both feel and longevity.

A Quality Harvia Heater

The Essex comes standard with a Harvia KIP80B — an 8 kW Finnish, UL-listed heater from one of the most respected brands in the industry. For a barrel of this size, 8 kW is generous, which is actually the right call here: a barrel loses heat quickly, so the extra power helps it get to temperature and hold it. Choosing a Harvia over a generic heater is a real quality decision.

Wood-Burning Option

The Essex is the smallest barrel in Almost Heaven's lineup that can accept a wood-burning stove. If you want the off-grid, crackling-fire experience — no 240-volt circuit required — that flexibility is genuinely nice to have and not something every barrel offers.

The Warranty

A limited lifetime warranty on the sauna room (with five years on the heater and one year on the heating elements) is the strongest warranty in this comparison by a wide margin. Most kits I look at offer one or two years total. That's a real statement of confidence in the cedar build.

It Sheds Rain and Snow

The round shape isn't just aesthetic — water and snow roll right off a barrel, which helps with longevity in wet and snowy climates. It's also, frankly, a great-looking object in a backyard.

Where the Design Falls Short

The Barrel Geometry Problem

This is the big one, and it's not specific to Almost Heaven — it's true of every barrel sauna. In a barrel, you walk in and sit on a bench just above the curved floor, with the heater beside you at roughly the same level. The problem is that you can't get your body up above the stove.

Here's why that matters. The hottest, steam-rich air in any sauna collects in the upper third of the room — the "löyly cavity" above the heater. In a well-designed sauna, you raise the upper bench into that zone so your whole body sits in even, convective heat. The curved walls of a barrel make a proper elevated bench impossible. You end up sitting low, with your feet and torso below the top of the stove, which means a bigger temperature difference between your head and your feet and a weaker, less even steam experience. The geometry caps how good the heat can ever feel. It's the core design limitation of the entire barrel category.

Single-Wall Construction, No Insulation

The Essex walls are 1-3/8-inch cedar staves — and that single layer of wood is both the structure and the insulation. There's no framed cavity, no insulation batt, and no foil vapor barrier. The R-value of a wall like that is very low, somewhere in the R-2 to R-3 range, versus the R-13 to R-21 you'd want.

In practice that means more heat loss, higher running costs, and a sauna that struggles in cold weather. The 8 kW Harvia is sized to fight that heat loss, but physics is physics — in a Tahoe or Midwest winter, a single-wall barrel works hard to hold temperature. The cedar will also see bigger moisture swings without a vapor barrier protecting the wall.

Capacity Is Overstated

The Essex is rated for four. A 6-by-7-foot barrel has roughly 150 to 180 cubic feet of usable interior air once you account for the curved floor and walls. At four people, that's around 40 cubic feet each — well under the 105 cubic feet per person that keeps air quality healthy. Realistic, comfortable capacity is two to three. Four works for a quick session with people you know well, but the air gets stuffy fast.

No Mechanical Ventilation

Like essentially all barrels, the Essex relies on passive airflow rather than a designed mechanical ventilation system. Without fresh air pulled in above the heater and stale air exhausted from below the opposite bench, CO₂ builds up with multiple people inside. Barrels are harder to retrofit with proper ventilation than box-shaped cabins because of the curved walls, so this one's worth knowing going in.

Round Walls Waste Space

The curvature that sheds snow so well also eats into usable interior. Your head is close to the curved ceiling on the upper bench, and the floor narrows at the bottom of the curve. You get less genuinely usable room than the 6-by-7 footprint suggests.

Specs vs. Design Standards

The Bottom Line

The Almost Heaven Essex is a well-made barrel. The Western Red Cedar is excellent, the Harvia heater is a quality component, the lifetime room warranty is the best in this group, and the wood-burning option adds real flexibility. If you've decided you want a barrel sauna, this is one of the better ones you can buy, and it's made in the USA.

But the barrel format itself is the limitation. The round geometry keeps your body below the stove, the single-wall cedar has almost no insulation or vapor barrier, and the capacity rating is optimistic. None of that is Almost Heaven cutting corners — it's the inherent trade-off of the barrel category. A box-shaped cabin with two-level seating and insulated walls will out-perform any barrel on the quality and evenness of the heat, full stop.

So the honest verdict: if you love the look of a barrel, want real cedar, and you're realistic about it being a two-to-three-person sauna in a mild-to-moderate climate, the Essex is a solid buy with a standout warranty. If you live somewhere cold or you care most about the quality of the heat, understand that the barrel shape — not the brand — is what's holding the experience back.

Whatever you decide — any sauna is better than no sauna. The important thing is that you're investing in your health.

Also read: Redwood Outdoors Cabin Sauna Review and Dundalk Luna Sauna Review.

Frequently Asked Questions

Is the Almost Heaven Essex a good barrel sauna?

If you want a barrel, yes — it's one of the better-built ones, with real Western Red Cedar, a quality Harvia heater, and a lifetime warranty on the sauna room. Just know that the barrel shape limits how even the heat can feel, and the single-wall construction means real heat loss in cold climates.

How many people does the Almost Heaven Essex really fit?

Almost Heaven rates it for four. With roughly 150–180 cubic feet of usable interior volume and the 105-cubic-feet-per-person standard for healthy air, the realistic, comfortable capacity is two to three people.

What's the problem with barrel saunas?

The round shape stops you from getting your body above the heater into the hottest, steam-rich zone near the ceiling. You sit low, with the stove beside you, which creates a bigger head-to-feet temperature difference and a weaker steam experience. Barrels also use single-wall construction with little insulation. It's a category-wide trade-off, not specific to Almost Heaven.

Is the Almost Heaven Essex well insulated?

No. The walls are a single layer of 1-3/8-inch cedar staves that act as both structure and insulation, with no framed cavity and no vapor barrier. The R-value is very low (roughly R-2 to R-3), so it loses heat quickly and works hard to hold temperature in cold weather.

Can the Almost Heaven Essex use a wood-burning stove?

Yes. The Essex is the smallest barrel in Almost Heaven's lineup that can accept a wood-burning stove, in addition to the standard Harvia KIP80B 8 kW electric heater. That makes it a good pick if you want an off-grid, wood-fired option.

Almost Heaven Essex vs. an insulated cabin sauna — which is better?

For the quality and evenness of the heat, an insulated box-shaped cabin with two-level seating wins. It lets you elevate your body into the hot zone and holds temperature far better. The Essex's advantages are the cedar, the warranty, the wood-burning option, and the iconic barrel look. Choose based on which matters more to you.

Want to understand what actually makes a sauna perform before you buy a kit? Our DIY Design Toolkit covers the engineering that matters — bench heights, heater sizing, ventilation, and insulation — so you can evaluate any sauna with confidence. Or if you'd prefer a sauna designed around your exact space, our design consultations can help.