Cold And Hot Combo Tub

A cold and hot combo tub is a single unit that can switch between cold plunge temperatures (down to around 39 degrees Fahrenheit) and hot tub temperatures (up to 104 degrees Fahrenheit) using a built-in chiller and heater. This means one investment gives you both cold water therapy for recovery and hot water soaking for relaxation — without needing two separate units. All tubs in this collection are from KPLUNGE and are available in inflatable, solid cedar, and all-in-one configurations with integrated filtration, sanitation, and temperature control.

Contrast therapy alternates between hot and cold water immersion — typically starting with heat (10-15 minutes at 100-104 degrees) followed by cold (2-5 minutes at 50-59 degrees), repeated for 2-3 cycles. The alternation causes blood vessels to dilate in heat and constrict in cold, creating a pumping effect that significantly boosts circulation and lymphatic drainage. Research shows that contrast therapy is more effective for post-exercise recovery than either heat or cold alone, and many athletes and physical therapists consider it one of the most powerful recovery tools available. Used consistently, it reduces muscle soreness, speeds recovery, and improves overall sense of wellbeing.

Switching modes takes time — this is the main practical consideration with a combo tub. Going from cold plunge temperature (around 45 degrees) to hot tub temperature (100+ degrees) typically takes 4-8 hours depending on the heater power and ambient conditions. Going from hot to cold takes a similar amount of time. For a spontaneous contrast therapy session within the same unit, you need to plan ahead. Many users set a schedule — cold in the morning for recovery, hot in the evening for relaxation — and pre-set the temperature the day before. The KPLUNGE all-in-one models include WiFi app control so you can schedule and monitor temperature changes remotely.

We carry three configurations from KPLUNGE: Inflatable (Arctic Fox 39" and Kodiak 59") — portable PVC tubs starting around $629 for the shell, or $2,400-$2,800 with a chiller/heater unit included. Cedar (62" 2-person) — solid Western red cedar construction, from around $4,200 for the tub with $6,000+ for models with integrated chiller and heater. All-in-One (Borealis 69" and Iroquois 67") — fully integrated units with built-in chiller, heater, jets, lighting, and WiFi app control, from around $5,200. All models function as both cold plunge and hot tub.

For recovery specifically, research suggests that contrast therapy (alternating hot and cold) produces greater reductions in muscle soreness and better circulation response than either modality used alone. The hot phase relaxes muscles and dilates blood vessels; the cold phase constricts them — the repeated cycling creates a powerful circulatory pump effect. For general relaxation and stress relief, hot soaking alone is highly effective. For mental resilience and mood, cold alone delivers a strong dopamine and norepinephrine boost. A combo tub lets you use whichever protocol fits your needs on any given day.

Not within a single session using one tub — the temperature transition time is too long. True same-session contrast therapy requires either two separate units (a dedicated cold plunge and a separate hot tub or sauna) or access to a facility with both. A combo tub is best suited for alternating use across sessions: cold in the morning or after workouts, hot in the evenings. If same-session contrast therapy is your primary goal, pairing a cold plunge with a sauna is the most practical approach — and we carry both.

All KPLUNGE tubs include built-in filtration and sanitation that runs continuously regardless of temperature mode. The same water care routine applies whether you are using the tub hot or cold: check pH and sanitizer levels weekly, rinse the filter periodically, and change the water every 4-6 weeks for residential use. Rinsing off before entering is the single most effective habit for extending water quality. The all-in-one models include ozone sanitation for additional water cleanliness with less chemical input.

KPLUNGE tubs with chillers and heaters support a temperature range of approximately 39 to 104 degrees Fahrenheit — covering the full spectrum from serious cold plunge therapy to a comfortable hot tub soak. The digital controls allow you to set your precise target temperature, and the system maintains it automatically. The all-in-one Borealis and Iroquois models include app-based temperature control via WiFi so you can adjust and monitor settings remotely from your phone.

Running costs depend on climate, usage, and which mode you use most. As a cold plunge, expect roughly $20-40 per month for the chiller in a moderate climate. As a hot tub, add $30-60 per month for heating. If you switch between modes regularly, actual costs will fall somewhere in between — you are not running both simultaneously. Insulated covers (included with most models) are essential for minimizing energy use in either mode by retaining temperature between sessions.

Yes. All KPLUNGE cold and hot combo tubs ship free to the contiguous 48 US states with no sales tax (except Wyoming). Every purchase includes the full KPLUNGE manufacturer warranty. All prices are listed transparently online — no hidden fees. Our team is available before and after purchase for setup guidance, placement advice, and warranty support.