→ Strengthens immune function against infection & cancer
→ Reduces chronic inflammation
→ Supports the cellular repair pathways tied to aging

→ Improves cardiovascular fitness
→ Regulates blood pressure and blood sugar
→ Reduces stress hormones

→ Improves sleep
→ Increases growth hormone release
→ Increases heart rate variability

It comes down to size and capacity. The Vesper is our compact model — a 1–5 person sauna with a 60" x 80" footprint and a 4.5kw Huum Drop heater, perfect for individuals, couples, or small households. The Vesper XL steps up to 1–7 people with a 70" x 90" footprint, ideal if you want more bench space or entertain with friends. The Ember is our largest build — a 1–9 person sauna at 82" x 100" with a more powerful 9kw Huum Cliff heater and an L-shaped bench layout that offers deeper, more spacious seating. All three share the same height, modern cabin aesthetic, WiFi control unit, and upgrade options including red light therapy and under bench lighting.

We use beautifully designed Huum Brand heaters with wifi capable controllers, allowing you to control your sauna heater from the Huum mobile app.

We have options for heater upgrades, glass door variations, red light therapy and under bench lighting.

We use Havelock sheeps wool, the best in the business. Non-toxic and the most sustainable insulation on the market.

5 weeks

A concrete pad is best, but we can place our units on level gravel or pavers as well.

No. No volatile or toxic chemicals are used anywhere in our Saunas, keeping our saunas clean, healthy and smelling with beautiful cedar aromas.

For the interior, wipe down the benches regularly with a damp towel — occasionally with a small amount of diluted natural soap for a deeper clean. For the glass door, we recommend Bioclean glass cleaner (available on Amazon). On the outside, a fresh coat of stain once a year keeps it protected and looking great.

We build our saunas on-site, right at your home. Rather than shipping a pre-made kit, our craftsmen construct each sauna in place — framing, insulating, and finishing it by hand to the highest standard. That means every build is tailored to your space and held to true craftsman-built quality, with the kind of attention to detail and structural integrity you simply don't get from a flat-pack barrel or prefab unit. The result is a sauna that's genuinely built to last and built for you.

We're based in San Diego and San Luis Obispo Counties, and that's where most of our builds happen. But we're not limited to those areas — between our team, we can also build in the Bay Area, Santa Cruz, and San Clemente, and we're open to other parts of California with the proper arrangements. If you're anywhere in California, message us and let's see what we can work out.

Absolutely. While The Vesper, The Vesper XL, and The Ember are our signature models, we love a custom project. We can design and build a fully custom sauna tailored to your space, style, and needs, priced on a per-project design-and-build basis. Reach out with what you have in mind and we'll put together a plan and a quote.

We don't build plunges in-house — but we've partnered with Desert Plunge, which pairs perfectly with a sauna for contrast therapy (hot, then cold). Their plunges chill down to 39°F, stay cold even in hot climates thanks to heavy insulation, and include a pump + filtration system. As a Kaiborg Builds customer you get $100 off with code KAIBORGBUILDS → Shop Desert Plunge.

Disclosure: we earn a small commission on plunges purchased through our link, at no extra cost to you.