Traditional saunas require a dedicated 240-volt circuit with a 30-amp to 60-amp double-pole breaker and a hardwired connection, while most infrared saunas plug into a standard 120-volt outlet on a dedicated 15-amp or 20-amp circuit, making the infrared option far more realistic for most apartments.
You found a great apartment with a spare corner, and you want to put a sauna in it. Smart move. Regular sauna use is one of the most effective things you can do for cardiovascular health, recovery, and stress management. But before you start shopping for cedar panels and a heater, you need to figure out whether your building's electrical system can handle it.
Most apartment dwellers discover the hard way that installing a sauna isn't as simple as plugging in a space heater. The electrical requirements are specific, non-negotiable, and often the deciding factor between a weekend project and a full renovation.
Here is what you actually need to know.
The short answer: it depends on the sauna type
There are two paths you can take, and your electrical requirements change dramatically depending on which one you choose.
Traditional saunas (the kind with a heater that gets rocks hot) pull serious power. A typical residential sauna heater draws between 4.5 kW and 9 kW. That translates to a dedicated 30-amp to 60-amp circuit running at 240 volts. This is not something you plug into a wall outlet. You need a hardwired connection, a dedicated breaker in your panel, and professional installation.
Infrared saunas are more apartment-friendly. Most plug into a standard 120-volt outlet, though larger models may require a 20-amp circuit. A typical 2-person infrared sauna draws around 1,500 watts, roughly the same as a hair dryer. You can plug these into a standard grounded outlet, but you should not share the circuit with other high-draw appliances.
If you live in a high-rise or older building, the infrared route is almost certainly your only realistic option.
What your apartment's electrical panel needs to support
Before you buy anything, look at your electrical panel. You need to know three things:
- Available amperage. Most apartments have 100-amp or 200-amp main breakers. A traditional sauna heater drawing 50 amps uses half of a 100-amp panel's capacity. That leaves very little room for your refrigerator, AC, lights, and everything else. If your panel is already near capacity, adding a sauna means a service upgrade, which costs thousands and requires building approval.
- Available breaker slots. A traditional sauna needs a double-pole breaker (it takes two slots in your panel). If your panel is full, you cannot just swap in a new breaker without removing something else.
- Distance from the panel to the sauna location. The farther the run, the thicker the wire gauge you need. A 50-amp circuit running 50 feet requires 6-gauge copper wire. Running that through finished walls in an apartment is expensive and disruptive.
The 240-volt reality check
If you are set on a traditional Finnish-style sauna with a stove heater, here is what you are looking at:
- Dedicated 240-volt circuit
- Double-pole breaker (30 to 60 amps depending on heater size)
- 6-gauge or 8-gauge copper wire (THHN or similar)
- Hardwired connection to the heater control unit
- GFCI protection (required by code in most jurisdictions)
- Permit and inspection (required by code everywhere, though enforcement varies)
This is not a DIY job. You need a licensed electrician. Expect to pay $500 to $2,000 for the electrical work alone, depending on the run length and whether walls need to be opened.
The 120-volt infrared option
Infrared saunas are the practical choice for apartment living. Most manufacturers build them to plug into standard 120-volt outlets. But there is a catch: not all outlets are created equal.
You need a dedicated 15-amp or 20-amp circuit. That means nothing else should be running on that circuit while the sauna is on. If your sauna shares a circuit with your bedroom lights, phone charger, and TV, you are asking for a tripped breaker every time you try to heat up.
Check which outlets in your apartment are on which circuits. Your electrician can map this for you in about 15 minutes. Ideally, you want a circuit that only serves outlets in one room with minimal other load.
Some larger infrared saunas (3-person or 4-person models) require 240-volt connections. Always check the manufacturer specifications before buying.
What your landlord needs to approve
If you rent, you need written permission before doing any electrical work. Most landlords will say no to a hardwired traditional sauna because it involves permanent modifications to the unit. Infrared saunas that simply plug in are usually fine, provided you do not damage the walls or flooring.
If you own your apartment, you still need building approval. Many condos and co-ops have restrictions on electrical modifications, especially if they involve drilling through shared walls or increasing the load on the building's main electrical service.
The practical checklist before you buy
- Check your panel. Take a photo of the inside of your electrical panel and send it to an electrician. They can tell you in five minutes whether you have room and capacity.
- Measure your outlet. Is it a standard 3-prong outlet or a larger 240-volt outlet like the one your dryer uses? That tells you what sauna types are possible without rewiring.
- Know your building's rules. Read your lease or HOA bylaws. Some buildings prohibit high-wattage appliances for fire safety reasons.
- Hire an electrician for a site visit. This costs $100 to $200 and saves you from buying equipment you cannot use. They will tell you exactly what is possible and what it will cost.
- Plan for ventilation. Heaters need clearance from walls and ceilings. The electrical code specifies minimum distances. Your electrician and the sauna manufacturer's manual will tell you what is required.
A word on safety
Sauna heaters get hot enough to start fires if installed incorrectly. The electrical code exists for a reason. Do not use extension cords. Do not plug a traditional sauna heater into a standard outlet with an adapter. Do not attempt to wire a 240-volt circuit yourself unless you are a licensed electrician.
The research on sauna benefits is clear, but none of those benefits matter if your installation is unsafe. Finnish men who sauna 4 to 7 times per week have a 40 percent lower risk of cardiovascular death (Laukkanen et al., 2015). That study is worth replicating in your own life. Just do it with a properly installed heater and a clear understanding of what your apartment can handle.
The bottom line
If you want a sauna in your apartment, start with the electrical panel, not the Pinterest board. Infrared models that plug into a standard outlet are the most realistic option for most apartment dwellers. Traditional saunas require professional electrical work that may not be feasible in a rental or older building.
Get an electrician to look at your panel. Read the manufacturer's specifications before buying. And if your building says no, do not try to work around it. There are plenty of gyms and spas with saunas you can use while you save up for a house with a panel that can handle the real thing.
Frequently asked questions
What size circuit do I need for a home sauna in an apartment?
It depends on the sauna type. A traditional sauna heater drawing between 4.5 kW and 9 kW needs a dedicated 30-amp to 60-amp circuit at 240 volts. Most infrared saunas run on a standard 120-volt outlet with a dedicated 15-amp or 20-amp circuit, though larger models may require 240 volts.
Can I plug an infrared sauna into a regular wall outlet?
Most infrared saunas do plug into a standard 120-volt grounded outlet, but the circuit should be dedicated to the sauna. Sharing it with high-draw appliances like a TV or phone charger can trip the breaker every time you heat up. Always check the manufacturer specifications before buying.
Do I need an electrician to install a sauna in an apartment?
For a traditional sauna, yes, a licensed electrician is required since the work involves a hardwired 240-volt connection, a double-pole breaker, and a permit and inspection. Even for an infrared sauna, it's worth paying for a site visit, which the article puts at around $100 to $200, to confirm your panel and circuits can handle the load.
Will my apartment's electrical panel support a sauna?
That depends on your panel's available amperage and open breaker slots. A traditional sauna heater drawing 50 amps uses half the capacity of a 100-amp panel, leaving little room for other appliances. A traditional sauna also needs a double-pole breaker taking two slots, so a full panel means something else would have to be removed.