Article: How to Set Up an Infrared Sauna at Home: A Room, Power and Access Checklist

Sep 1, 2026full spectrum infrared sauna

How to Set Up an Infrared Sauna at Home: A Room, Power and Access Checklist

Wellari Wellness supplies infrared and full-spectrum saunas to homes, clinics and wellness facilities. This guide covers the part of the purchase that catches people out: whether the sauna you want will actually fit, connect and function in the room you have in mind.

It is a planning guide, not a product comparison. If you are still deciding between far-infrared, full-spectrum and hybrid cabins, start with our Infrared & Full-Spectrum Sauna Buyer's Guide and come back here once you have a model in mind.

One principle runs through everything below. Saunas differ enormously in size, power draw and installation requirements — even within a single brand. The specification on the individual product page is the authority for the sauna you are buying. This guide tells you what to look for there; it does not substitute for it.

Start With the Room, Not the Sauna

The most common planning mistake is choosing a cabin first and measuring afterwards. Work the other way around.

Measure the installed footprint, not the cabin

Sauna dimensions are published per model, and the figure that matters is the installed one. Many cabins have a roof overhang that extends beyond the base, so the space it occupies is wider than the floor plan suggests. Check the exterior dimensions on the product page, including any overhang, and plan around that number rather than the internal capacity.

Check the floor it will stand on

A sauna needs a level, dry, solid surface. Uneven flooring makes assembly harder and doors sit badly. Confirm the assembled weight on the product page and satisfy yourself that the floor is appropriate for it — if the location is anything other than a ground-floor slab, that is a question for a builder or structural engineer, not something to estimate from a product page.

Leave access for service

Heaters, control panels and wiring occasionally need attention. A cabin wedged tight against three walls is difficult to service and difficult to move. Plan for reasonable access around it, and check the manufacturer's own installation instructions for any clearance the model specifies.

Confirm the indoor or outdoor rating

Do not assume a sauna can go outside. Indoor and outdoor suitability is a manufacturer designation, not a matter of judgement, and it differs across the range. Garages, covered patios and unheated outbuildings each raise the question separately. The product page states the intended environment for that model.

Measure the Route In

This is the step people skip, and it is the one that most often causes a problem on the day.

A sauna arrives in cartons and is assembled in place, but those cartons still have to reach the room. Before you order, walk the route and measure:

Doorway widths — including any door that cannot be removed from its hinges.
Stair turns and landings — a half-landing with a tight corner is a harder constraint than a narrow straight run.
Ceiling height along the route, not just in the destination room.
Corners and pinch points — the diagonal a long carton needs to swing through.
Lift dimensions if one is involved, including the door aperture rather than the car's internal size.

Carton dimensions are published on each product page. Compare them against your route before ordering, not after delivery.

Power: Confirm It Before You Order

Electrical requirements vary by exact model. Across the saunas Wellari carries they differ with cabin size, heater configuration and brand — and two models from the same brand frequently differ from each other. There is no single answer that covers the range.

Three things to do, in order:

Read the electrical specification on the exact model's product page. That page is the authority for the sauna you are buying.
Then read the manufacturer's documentation. The manual is the installation authority and may carry requirements the summary specification does not.
Use a licensed electrician where the installation calls for one, with the work carried out in accordance with local code and the manufacturer's instructions.

That is deliberately brief here, because we cover sauna electrical planning properly in its own guide. For voltage options, circuit planning and what to discuss with your electrician, read the Home Sauna Electrical Guide: 110V vs. 220V, Breaker Sizing, and Installation Planning.

Assembly

Most infrared cabins are supplied flat-packed and assembled on site, typically using interlocking panels and buckle-style fasteners. The specifics — how long it takes, how many people are recommended, and what tools are needed — are stated per model and vary with cabin size.

Check the product page for the manufacturer's assembly guidance before you plan the day. As a practical matter, panels are large and awkward rather than heavy, so having a second person available is sensible regardless of what the minimum says.

Residential or Commercial Use

Saunas carry an intended-use designation from the manufacturer, and it affects more than warranty wording. Some models are designated for non-commercial use, and some specify a duty cycle — a stated on/off pattern the unit is built around.

If the sauna is going into a medspa, clinic, recovery centre, gym or any setting where clients use it, confirm three things on the product page before ordering:

The intended-use designation covers commercial operation.
The warranty covers commercial use — residential warranty terms often do not.
Any duty cycle the manufacturer specifies is compatible with your expected turnover.

If you are equipping a facility, talk to us before ordering and we will confirm the rating and warranty position for the specific model with the manufacturer.

Before You Order: A Checklist

Installed footprint measured, including roof overhang where the model has one
Floor confirmed level, dry and appropriate for the assembled weight
Service access allowed for around the cabin
Indoor or outdoor rating confirmed for your intended location
Route in measured — doorways, stairs, turns, ceiling height, lift aperture
Carton dimensions checked against that route
Electrical requirement read on the exact model's product page and in the manual
Electrician consulted where the installation calls for one
Assembly guidance read, and help arranged if needed
Intended-use designation and warranty checked against how you will use it

Frequently Asked Questions

Do I measure the cabin, or the space it needs?

The space it needs. Many cabins have a roof overhang that extends beyond the base, so the installed footprint is wider than the floor plan implies. Use the exterior dimensions on the product page, including any overhang, and plan around that figure.

Will it fit through my door and up my stairs?

Measure before you order. Saunas arrive in cartons and are assembled in place, so the constraint is the route rather than the finished cabin — doorway widths, stair turns and landings, ceiling height along the way, corner diagonals and lift apertures. Carton dimensions are published on each product page.

What kind of floor does a sauna need?

Level, dry and solid, and appropriate for the assembled weight stated on the product page. For anything other than a ground-floor slab, ask a builder or structural engineer rather than estimating from a specification sheet.

What electrical supply does it need?

It depends entirely on the model, so check the electrical specification on that sauna's product page and in the manufacturer's documentation. For a fuller treatment of sauna electrical planning, see our Home Sauna Electrical Guide.

How much space should I allow around the sauna?

Allow enough for service access and for the cabin's installed footprint including any roof overhang. Specific clearance requirements are set by the manufacturer for each model and are stated in its installation instructions — we do not publish a single clearance figure, because it would not be accurate across the range.

Is my sauna rated for a garage or covered outdoor space?

Only if the manufacturer designates it so. Indoor and outdoor suitability is a rating, not a judgement call, and garages, covered patios and unheated outbuildings each need checking against it separately. The product page states the intended environment for that model.

How many people are needed to assemble one?

This is stated per model and varies with cabin size. Check the assembly guidance on the product page. Panels tend to be large and awkward rather than heavy, so a second pair of hands is usually worth arranging.

Can I use a home sauna in my business?

Only where the manufacturer designates the model for commercial use and the warranty supports it. Some models are designated non-commercial and specify a duty cycle. Confirm both before ordering — or ask us and we will confirm with the manufacturer.