How to Convert Your Traditional Sauna to Infrared: Step-by-Step Guide (2026)

You already have a sauna room — framed walls, insulated, finished with wood, a bench, a door. You've done the hard part. Converting from traditional to infrared doesn't require starting over — it requires swapping the heat source and upgrading the controls.

Why people convert

Comfort: Traditional saunas at 170-200°F are too intense for some users — elderly adults, children, people with respiratory sensitivity. Infrared at 130-150°F provides the same core temperature elevation in a more comfortable environment. Energy: Traditional rock heaters use more electricity and require 30-45 minute warmup. Infrared panels heat up in 10-15 minutes and use less power per session.

Health research: The Waon therapy and CFS studies used far-infrared specifically. Some users want the modality the research tested. Red light therapy: PBM LED panels can't survive in 180°F traditional sauna air — the electronics fail. Infrared's lower ambient temperature allows bench-integrated red light therapy at therapeutic wavelengths. Maintenance: No rocks to replace, no high-temp element to corrode, simpler long-term upkeep.

Assessment: is your sauna convertible?

Send us photos and dimensions and we'll give you a definitive answer. Here's what we evaluate: Dimensions: Minimum 4'x4' interior for a comfortable single-person conversion. Larger is better — more wall space for heater panels. Wood condition: Is the wood structurally sound? Any rot, mold, or significant damage? Wood type: Cedar and hemlock are ideal. Pine and spruce may ooze sap at infrared panel temperatures and may need replacing. Insulation: Is the room properly insulated? Traditional saunas should have insulation — verify it's intact. Electrical: What circuit currently feeds the traditional heater? Amperage, voltage, wire gauge. Ventilation: Is there adequate fresh air exchange?

The six-step conversion process

Step 1 — Assess and plan: SaunaCloud evaluates your existing space (photos + dimensions + electrical specs) and designs the infrared layout — heater panel placement, overhead panel position, control location, red light integration if desired.

Step 2 — Remove traditional heater: The rock heater, rocks, and associated high-temperature electrical connections are removed. If space allows and you want to keep the option of traditional heat, the unit can be left inactive (though most conversions remove it to free wall/floor space for infrared panels).

Step 3 — Install VantaWave infrared panels: Carbon wall panels mount to existing walls. The overhead halogen panel installs above. Full-surround placement ensures uniform infrared coverage. Panel positioning is designed around the existing bench layout.

Step 4 — Electrical upgrade: Your licensed electrician adapts the existing circuit for the CORE 5 power supply. Traditional saunas typically run on 240V/30-50A dedicated circuits — infrared may need different amperage but can often use the existing wiring. SaunaCloud provides complete electrical specs.

Step 5 — Install control panel and power supply: CORE 5 mounts above/outside the sauna. Control panel installs at a convenient location inside or outside the sauna room. SaunaCloud provides phone/video support throughout installation.

Step 6 — Add upgrades: Optional red light therapy integration (660nm + 850nm bench-integrated LEDs). Improved ventilation if needed. Updated interior lighting (warm, non-blue wavelengths for evening use).

Wood compatibility

Western Red Cedar — ideal. Naturally aromatic, antimicrobial, dimensionally stable at heat. If your traditional sauna is cedar, you're in the best possible starting position. Hemlock — adequate. Common in traditional saunas, works well with infrared but lacks cedar's antimicrobial properties and aroma. Pine/spruce — potentially problematic. Softwoods can ooze sap when heated by infrared panels at close range. If your traditional sauna is pine with no sap issues at traditional temperatures, it may work at infrared's lower temperatures — but assess carefully.

The cost-benefit math

Your existing sauna room represents 50-60% of a new build's cost: framing, insulation, vapor barrier, wood finishing, bench construction, door, and exterior structure are all done. Conversion cost is primarily the heater system, control panel, CORE 5 power supply, electrical modification, and installation labor. Rule of thumb: a conversion costs roughly 40-60% of a comparable new custom infrared build.

Frequently asked questions