Recovery infrastructure built into the property. Not added to it.
Cold plunge, sauna, contrast therapy, and smart recovery infrastructure integrated into the landscape without visible equipment or above-ground additions. Nashville, Brentwood & Franklin TN — Elkhorn & Omaha NE.
This isn't a backyard spa. It's engineered recovery.
Traditional wellness installations add features: inflatable cold tubs sitting on patios, prefab sauna boxes in corners, portable therapy equipment stored in sheds. The functionality exists. The integration doesn't.
LOWLINE systems design wellness infrastructure into the property from the start. Cold plunge pools install flush with decks or turf. Sauna structures integrate into landscape architecture with custom finishes. Chiller units, heaters, and electrical systems conceal in equipment vaults or basements. What belongs above the surface stays. What's mechanical moves below it.
What we build
Each system is designed for the specific property — not selected from a catalogue. Integration with existing landscape and architecture is always the starting point.
In-Ground Cold Plunge
Cold water immersion at 45°F–55°F for inflammation reduction, circulation boost, mental clarity, and nervous system resilience. Flush-mount plunge pools install at patio or deck level — depth ranges 4–6 feet for full-body immersion. Chiller systems conceal in equipment vaults or basements. Insulated covers retain temperature and blend with deck material when closed. This is daily-use recovery infrastructure — engineered for permanence, designed to disappear when not active.
Infrared Sauna Structures
Infrared sessions at 150°F–195°F for muscle recovery, detoxification, and cardiovascular health. Infrared systems heat the body directly rather than heating ambient air — lower temperature, deeper penetration, more comfortable extended sessions. Outdoor structures integrate into landscape with natural materials: cedar or hemlock interiors, stone or wood exteriors. Alternative: sauna rooms within pool houses or cabanas, designed with the installation in mind — electrical service, thermal insulation, and drainage engineered during construction, not retrofitted afterward.
Contrast Therapy Stations
The combination of heat exposure and cold exposure in alternating cycles — the recovery protocol driving current wellness adoption. Circulation optimization through vascular dilation/constriction, inflammation management, mental resilience training. Layout positions sauna and cold plunge 10–20 feet apart with covered walkway or outdoor shower between. Lounge area nearby. For properties in Franklin, Brentwood, and Elkhorn, contrast therapy stations aren't amenities. They're recovery infrastructure that functions daily without facility memberships or appointment scheduling.
Red Light Therapy Rooms
Red and near-infrared light exposure (660nm/850nm wavelengths) for cellular repair, collagen production, inflammation reduction, and skin health. Small dedicated rooms (6x6' minimum) with wall-mounted LED panels. Sessions run 10–20 minutes, 3–5 times per week. Standard 120V electrical. Integrates into pool houses, sauna structures, or standalone garden rooms. Space often doubles as a meditation area when therapy panels are inactive. LOWLINE installs this as permanent infrastructure — not portable equipment from an e-commerce box.
Hydrotherapy & Recovery Pools
Heated recovery pools, swim spas, and resistance current systems for low-impact exercise and rehabilitation. Water temperature ranges 85°F–104°F. Therapy jets target specific muscle groups. Adjustable current allows stationary swimming in compact footprints (12–20 feet).
Installation: flush with deck, partially in-ground, or fully subsurface. Heater and pump systems conceal in equipment vaults. Insulated covers retain heat. Water treatment — salt systems, UV, ozone — operates automatically.
Smart Wellness Integration
App-based controls set sauna temperature, activate cold plunge chillers, and adjust lighting from your phone. Heart rate variability (HRV) integration recommends session duration and temperature based on recovery metrics. Session tracking logs contrast therapy cycles over time.
Voice control activates heating sequences: “Alexa, start sauna session.” This is 2026 wellness infrastructure — automated, data-informed, and optimized for individual recovery needs.
Engineering below the surface
In-ground cold plunge design requires more than a hole and a drain. Chiller sizing, filtration cycling, drainage capacity, and surround finish all need to be coordinated from the start.
Schedule a Property Assessment
Start with a site assessment. We'll walk the property, understand how you use the space, and scope a wellness system that integrates rather than intrudes.
Prefer to talk first?
Wellness Systems FAQ
Tank drop-ins sit above the surface — exposed sides, visible plumbing, and they look like installed equipment. An in-ground cold plunge is flush with the surrounding patio or deck. No visible walls, no exposed tank. The water surface is at the level you step down from, and the surround is finished in whatever material the property uses.
Wellness Systems range from $15,000 for an in-ground cold plunge to $75,000+ for a complete contrast therapy station with sauna, plunge, outdoor shower, smart controls, and lounge area. Scope depends on system complexity, site integration, and finish materials.
Yes. Cold plunge filtration can integrate with existing pool systems where applicable. For contrast therapy stations, existing pool equipment locations inform vault placement and drainage routing. Every project is assessed with existing infrastructure in mind.
App-based controls for sauna temperature, cold plunge chiller activation, and lighting. Heart rate variability (HRV) integration that recommends session duration and temperature based on recovery metrics. Session tracking that logs contrast therapy cycles. Voice control that activates heating sequences. The system learns and adjusts to your recovery patterns.
Yes. The chiller system requires a dedicated 240V circuit. All electrical work is coordinated as part of the project scope. LOWLINE doesn't hand off electrical coordination to other contractors — it's part of the installation.
Nashville, Brentwood, Franklin, and surrounding Middle Tennessee. Eastern Nebraska including Omaha, Elkhorn, and Gretna.
The infrastructure integrates. The practice becomes sustainable.
Cold plunge exists 20 feet from the house. Sauna activates in under 10 minutes. Recovery protocols work when they're practiced regularly — not when they fit into a weekly schedule.
Equipment concealment ensures chiller units, heaters, and filtration systems remain invisible. See Concealment Systems for subsurface equipment vaults. For builds that don't fit standard categories, see Custom Systems.