Dedicated 240V circuits for electric saunas, sized to the heater and run to code.
An electric sauna needs its own 240V circuit. A typical sauna heater is on a 40-amp circuit, but the heater itself sets the size: the nameplate gives the amperage and the minimum circuit, and the breaker and conductors follow from there along with whatever the manufacturer's instructions require. We read the plate and the manual first. If you have chosen a heater but not bought it yet, send us the model number and we will size the circuit around it.
A sauna is dry heat, so it is not a hot tub. It does not carry the water-bonding regime a spa does, though a hardwired sauna heater still needs a disconnect nearby, and that is often a spa panel. Whether it needs GFCI protection depends on the manufacturer's spec. What a sauna carries instead is heat. Inside the hot room, wiring follows the manufacturer's instructions — generally high-temperature-rated conductors, specific routing away from the heater, and the control head and sensor placed exactly where the manual puts them. The details inside the room matter as much as the circuit that feeds it, and they are what an inspector will hold the work against.
Outdoor barrel saunas and detached sauna rooms change the job. A feed to a separate structure is a different scope from a circuit inside the house: it may need a trench, a weatherproof disconnect at the building, and in some cases a small subpanel out there rather than a single circuit — particularly if you also want lights and a receptacle. Which one applies depends on what you are feeding and how far it sits from the house, and it is much cheaper to decide before the pad is poured than after.
The other thing to settle early is whether your service can carry it. A sauna heater is a substantial 240V load, and a lot of county housing stock is still on a 100A panel with no spare slots. Run the Panel Load Calculator before you order a heater — it is far easier to choose a heater that fits the service you have than to find out after delivery that a service upgrade has to come first. Small plug-in infrared and low-wattage units are a different story: if yours runs on a standard 120V receptacle, you may not need this work at all, and we will tell you that rather than sell you a circuit.
A tech reads the heater's nameplate and manual, checks your panel for capacity and an open slot, and walks the route to the sauna location. You get a written scope and a real quote. If the heater is not bought yet, this is the visit where we tell you what your service can comfortably carry.
We pull the electrical permit with the correct authority — the County building department for most unincorporated addresses, the city for Santa Cruz, Capitola, Scotts Valley, and Watsonville — and schedule around the rest of your build.
Circuit run from the panel, hot-room wiring placed per the manufacturer's instructions, disconnect set, controls and sensor terminated. On new construction we split this into a rough-in before the walls close and a trim visit afterwards.
The inspector signs off, then we energize, bring the heater up with you, confirm the controls and the sensor behave, label the breaker, and hand over the permit number and sign-off with the invoice.
The heater sets the circuit size. Almost everything else about the price is the run and the room. A sauna going into a garage a short distance from the panel is a straightforward job. The same heater in a detached back-yard structure across a slope, or in a finished second-floor bathroom where the wall has to be opened and closed, is a different one. New construction is usually cheaper than a retrofit, because we are working in open framing instead of fishing through it. And if the panel has no capacity or no open slot, that work belongs in the same quote rather than surfacing later as a surprise. We look at all of it on site and give you the number in writing. Quotes are free.
“Sunrise Electrial in Santa Cruz came to my home in a timely manor, and reasonable cost to replace a sparking switch plate. This is a relatvely young company, with a very pleasant and knowledgeable owner. He explained everything he did. Please consider Sunrise Electric for your electrical needs.”
“Sunrise electric and especially Ian was amazing. They had already came out with less than 1 days notice and replace our panel, but then outlets and lights were not working. Called them to inquire and they quickly sent Ian to our home. Within 30 minutes he repaired the issue. Excellent customer service and knowledge about the issue. Timely and super nice too. Ian put me at ease immediately and left me with all working electrical!!! I am extremely happy with Sunrise Electric. 🌅. Cecelia N”
“They did an excellent job in changing a circuit for me and also fixing some light switches. The person that came out was very knowledgeable worked quickly was very professional and polite. They let you know when they're on their way. They confirm the Appointment And it was a great experience I would use them again and I highly recommend”
Pulled from what we actually hear on quotes and on-site. If yours isn't here, ask us — we'll answer in plain English.
We'd rather you get the right outcome than the Sunrise outcome. Some of this points away from us on purpose.
Find a CSLB-licensed C-10 contractor and verify the number at cslb.ca.gov. Ask for liability and workers-comp proof, and hand them the heater's installation manual at the quote — the manufacturer's instructions are what the inspector will hold the work against.
Browse our field guidesSize the service first and the heater second. The appliance-circuits hub explains how dedicated 240V circuits get scoped, and the load calculator tells you what your panel has left.
See appliance circuitsA free whole-home inspection gives you a written picture of what your service is carrying today. You keep the report either way, with no obligation to book work.
Schedule a free inspectionFrom Davenport to Pajaro Dunes, San Lorenzo Valley to Pleasure Point. Same crew, same warranty, same pricing.
Send us the heater model. We will size the circuit, pull the permit, and quote the whole job in writing before anything gets opened up.