Hey there, it’s Jake from [Your Company Name] Outdoor Spas, and let’s cut to the chase—if you’ve ever stared at an outdoor spa through a snow-dusted window, or wondered if firing one up when the temp’s dipping way below freezing is even possible, you’re not alone. I get it. Before I started running our spa supply business, I thought outdoor spas were strictly for summer barbecues and poolside hangs. But here’s the thing: we’ve sold hundreds of spas over the last 7 years, and roughly 40% of our customers live in places where winter sticks around for 5+ months. Turns out, cold weather and outdoor spas don’t just coexist—they work pretty well together, if you know what you’re doing. And no, you don’t have to turn it into a daily 2-hour maintenance chore. Let me break this down like I would with a customer who just swung by our warehouse, staring at a spa display like it was a spaceship. Outdoor Spa
First, let’s get the science out of the way, because I hate when people act like spas are some fragile backyard toy. Your spa’s main thing is that water is heated, right? Even in 20°F (-6°C) weather, if your spa’s set to a comfortable 100°F (38°C) for soaking, the heater doesn’t have to work that hard to keep it there—here’s why. Water has this thing called high specific heat capacity. That means it takes way more energy to heat water up than it does air, but once it’s hot, it loses heat way slower than air does. Think about it: a cup of hot coffee will stay warm for 20 minutes in a cold room, but an empty mug? It’ll be cold in 5. Same concept here. A spa’s insulated shell (the ones we use on all our models, not the cheap no-name ones you see at big box stores) traps that heat. We’re talking 2-4 inches of closed-cell foam insulation in the cabinet and the spa shell. I’ve had customers text me pics of their spa at 15°F (-9°C) with the heater only running 20 minutes a day to stay at 100°F. No exaggeration.
Now, the big worry everyone has: freezing pipes. Let’s nip that myth in the bud. If you own a spa and you’re using it regularly, you don’t have to drain it or winterize it like some old camping tent. Wait—regularly is the key word here. If you’re the type who leaves town for 2 weeks in January and doesn’t touch it, yeah, you’ve got to do the whole winterization thing (draining lines, adding antifreeze, etc.). But if you’re using it 2-3 times a week, you’re fine. Why? The spa’s circulation pump runs on a timer. Even when you’re not soaking, it’s cycling water to keep it moving, and most spas have a freeze protection mode built right in. That mode kicks in when the water temp drops to like 40°F (4°C) and turns the pump on low, and if it keeps dropping, it fires up the heater just enough to keep lines from freezing. I’ve tested this ourselves: we left a test spa outside our warehouse all last winter, no cover, just the freeze mode on. When the temp hit 10°F (-12°C), the heater ran for 15 minutes at a time every hour, and there wasn’t a single frozen line.
But wait, I don’t want to make it sound like there’s zero work. There are small, easy things that make a huge difference, and most of them are way simpler than shoveling your driveway. First, the cover. Not just any cover—we sell these heavy-duty, insulated thermal covers that lock in heat. A lot of customers try using a thin plastic cover from a cheap spa, and they’re shocked when the temp drops 10 degrees overnight. Our covers have a R-value (that’s the insulation rating, for anyone who doesn’t geek out on building stuff) of like 15, which is way higher than the average roof insulation. Pro tip: get a cover lifter too. Trying to yank a 80-pound cover off in 20°F weather when your hands are numb is not fun. The lifter lets you flip it up against the spa, so you’re not fighting snow and ice every time you want to soak. Second, check the cabinet vents. A lot of people think you should cover the whole spa, but no—you need air flow to the circulation system. Block those vents with snow or leaves, and you’ll mess up the freeze protection. We make sure to mark that in every user manual we hand out, because I’ve seen a customer’s heater go out after a storm blocked the vents. It was an easy fix, but a 10-minute check could’ve prevented it.
Let’s talk real user experiences, because numbers are great, but stories hit different. Last year, we sold a 6-seater spa to a couple in Minnesota—their backyard’s got nothing between the spa and the north wind, so it’s the coldest spot on their property. They hit me up in March saying they were using it every weekend, and their electric bill only went up $45 a month from summer. That’s it. $45. Another customer in Vermont, she uses hers at 8 a.m. when it’s 18°F (-8°C) outside, and she says the contrast between the cold air and the hot water is why she looks forward to it more than summer. Even our own team: our warehouse manager, Mike, has a spa outside his house in Wisconsin. Last February, he told me he was the only one in his neighborhood swimming (he leaves it at 95°F, so it’s like a warm bath, not hot) and his kids built a snow fort right next to the spa. No issues at all.
Wait, what about when it’s really, really cold—like below 0°F (-18°C)? Let’s be real, that’s brutal. But even there, it’s manageable, not impossible. Our freeze mode is adjustable, so you can crank it to kick in at a higher temp if you know a cold snap’s coming. Also, I always tell customers to keep the water level a little higher than the line in the winter. When water’s lower, the lines at the bottom of the spa are closer to the cold air, so they can chill faster. Just an inch higher, and that’s enough to keep those lines from getting too close to freezing. Another thing: avoid using the spa right after a blizzard if there’s heavy snow on the cover. The weight of the snow can press the cover down, ruining the seal, which lets heat escape. We have a little snow broom we sell as an add-on—super lightweight, lets you brush snow off the cover in 2 minutes without scratching it. Way better than climbing on the roof (I’ve seen too many people slip doing that).
Now, I know what some of you are thinking: “But I thought spas cost a fortune to run in the winter?” Let’s do quick math. Let’s say electricity is $0.15 per kWh. A spa heater uses about 5 kWh to heat from 50°F to 100°F. But like I said earlier, in cold weather, it’s only running to maintain temp, not heat from scratch. If your spa’s insulated well, it’s running 15-30% of the time. So that’s 0.75 to 1.5 kWh an hour, times 24 hours a day, times 30 days a month. That’s $3.24 to $6.48 a day, times 30 days is $97 to $194 a month. Wait, but that’s top end—most people only use it 3-4 times a week, so that drops to like $60-$120. Compare that to, say, heating your house, which is way more expensive, or even a space heater you use in the garage. And remember, that’s for a big 6-seater. Our smaller 2-seater spas use even less, like 2 kWh max, so their monthly cost is half that. Way cheaper than a gym membership you don’t use, right?
I also need to call out the bad takes from people who’ve never owned an outdoor spa in cold weather. Last month, I saw a Reddit thread where someone said they “froze their spa solid” because they left the cover off for a day. Duh—if you leave the cover off, you’re losing heat like crazy, so the heater has to work overtime, and if the temp’s dropping, it might not keep up. That’s not the spa’s fault, that’s user error. Another one: “I had to drain my spa every winter.” Again, if you’re using it regularly, you don’t have to. The only time you drain it is if you’re replacing the water every 3-4 months (which you should do, regardless of season) and even then, you can hook up a hose and drain it in 20 minutes, no special steps needed. We even have winter water care kits—they come with test strips and chemicals that work better in cold water, so you don’t have to adjust your routine just because it’s snowing.
Let’s get practical: what do you need to actually pull this off? If you’re buying a spa for cold weather, don’t get the cheap model from the big box store. We’ve tested those—they have thin insulation, no freeze mode, and their heaters are underpowered. Our spas come standard with the closed-cell insulation, adjustable freeze protection, and all the accessories I mentioned: cover, lifter, snow broom. Also, make sure you have a dedicated 240-volt outlet. That’s non-negotiable for any outdoor spa, especially cold weather. The 120-volt plug-in ones can’t heat water fast enough when it’s cold, so the heater runs nonstop and kills your electric bill. We always help customers with electricians if they need it, because we want them set up right from day one.
Wait, what about comfort? Is soaking in an outdoor spa in cold weather actually nice? Yeah, it’s amazing. You get that perfect balance: hot water wrapping around you, crisp air on your face, maybe some steam rising that makes the whole area feel cozy. I’ve done it in 10°F (-12°C) weather, and the only thing better is coming in to a warm house after. A lot of our customers even use the spa for after-work stress relief in winter—way better than sitting on the couch scrolling, because it gets your blood flowing and actually helps with sore muscles from shoveling or being stuck inside all day.
Now, I know there’s still a voice in the back of your head saying “what if something breaks?” Let’s be real, things break, but that’s why we have a support team. If you get our spa, you get a 5-year warranty on the shell, 3 years on the heater and pump, and 24/7 support. Last January, a customer in Maine text us at 9 p.m. saying his freeze mode light was blinking. We walked him through a quick check—turned out a snowflake had clogged a small sensor, not a broken part. We talked him through clearing it over the phone, no service call needed. That’s the kind of support we don’t cut corners on, because we’ve seen how important these spas are to people in cold climates.
So, to circle back to the original question: can an outdoor spa be used in cold weather? 100% yes. It’s not some gimmick or a thing only for people in warm states. It’s a winter staple for hundreds of our customers, and we’ve never had someone regret buying one for cold weather. The key is getting a spa built for that (not the cheap no-name ones), using the basic maintenance tricks (keep the cover on when not in use, check vents, don’t leave it unused for weeks), and not buying into the hype that cold weather kills outdoor spas.
If you’re thinking about taking the plunge (pun totally intended) but still have questions—maybe you’re worried about electric bills, or setup, or if your area’s cold enough, whatever—hit us up. We don’t do fancy sales pitches, we just tell it like it is. We can send you our customer testimonials from cold-weather areas, or answer any question you have about how our spas hold up when the snow’s falling. Don’t let winter make you skip out on one of the best backyard investments you can make.
Swim Spa References
- ASHRAE Handbook of HVAC Applications, Chapter 6: Pools, Spas, and Hot Tubs, 2021
- International Hot Tub Association (IHTA) Winterization Guidelines for In-Use Spas, 2022
- U.S. Department of Energy, Energy Efficiency for Residential Hot Tubs, 2023
- Journal of Building Physics, Thermal Performance of Insulated Spa Enclosures in Cold Climates, 2020
SpaRelax Co., Ltd.
SpaRelax Co., Ltd. is one of the best China outdoor spa manufacturers and suppliers, and as a professional company, we have productive factory, which is able to produce cheap outdoor spa with reliable quality. Welcome to wholesale products from us.
Address: Daluxia, Liucun Group，Liucun Village, Longhua Town, Boluo District, Huizhou City, Guangdong,China
E-mail: sales03@spasrelax.com
WebSite: https://www.sparelaxhottub.com/
