In Southeast Florida, a pool and a heated pool are two different products. The pool gets you into the search results. The heat is what decides whether a January guest books your home or the one three streets over. Most investors underwrite the pool as a capital item and then discover that the heat is an operating line that shows up every month whether anyone swims or not.
This is the question worth answering before you buy a heater, not after: in a market where nobody is cold, what is the heat actually doing for you?
Air temperature and water temperature are not the same thing, and guests only care about one of them. A Pompano Beach or Delray Beach afternoon in January can be perfectly pleasant while the pool is cold enough that nobody gets past the first step. Water holds and sheds heat slowly, so a pool that is comfortable in October drifts down through the fall and sits at the bottom of its range exactly when your out-of-state guests arrive expecting to use it.
That is the whole case for heat in a warm market. Not comfort in July, when the pool heats itself. Comfort in the stretch of winter weeks when Southeast Florida sells itself as the place that is not frozen, and the pool is the reason the family picked a house over a hotel.
It also explains why the heat question is seasonal rather than binary. An owner who thinks of a heater as always on or always off is answering a different question than the market is asking.
A pool heater is three costs, and investors routinely budget for one of them.
The first is the equipment and its installation. This is the number owners fixate on because it arrives as a single invoice and it is the one a contractor will quote over the phone.
The second is the energy to run it, which is a function of how cold the water starts, how big the pool is, how much surface area is losing heat to the night air, how windy the site is, and how many nights you choose to run it. This is not a fixed monthly figure. It is a variable cost that moves with weather and with your own booking calendar, and it is the one that quietly decides whether the amenity pays.
The third is maintenance and eventual replacement. Heaters are mechanical equipment exposed to salt air and pool chemistry. They need service, and they do not last forever. An underwriting model that includes the install and ignores the replacement is a model that looks good for a few years and then stops looking good.
Budget all three or you have not underwritten the amenity, you have underwritten the purchase.
Electric heat pumps move heat from the outside air into the water. They are efficient, and in a climate like Southeast Florida they are efficient most of the time. Their weakness is the one that matters here: a heat pump's output falls as the air it is pulling from gets colder, and it works slowly. During a cold snap, which is precisely the week your guest wants a warm pool, a heat pump is working at its worst and taking the longest to recover.
Gas heaters do not care much what the air is doing. They heat fast and they can bring a pool up for a weekend arrival from a cold start. The trade is cost per unit of heat and a fuel supply you have to arrange and keep stocked if you are not on a line.
For a short-term rental, this difference is not academic. Your heating demand is not steady, it is spiky and it is scheduled by strangers. A guest checks in Friday and wants the pool warm Friday evening, not Sunday. A system that heats slowly needs you to anticipate arrivals and start days ahead, which means running it on nights nobody is in the house. A system that heats fast lets you follow the calendar instead of guessing at it, and pay for heat only when there is a guest to enjoy it.
Which one is right depends on your calendar, not on the brochure.
Heat is not automatically worth it. It is worth it for homes with a specific shape of demand. Work through these before you spend:
| Question | Why it decides the answer |
|---|---|
| How much of your revenue lands between December and March? | If your home is a summer-and-holidays property, you are buying an amenity for weeks you were not selling anyway. |
| Who is your winter guest? | Families and snowbird-season travelers use a pool. Business and event travelers mostly do not, and will not pay a premium for one. |
| What are comparable homes near you offering? | If heated pools are standard on your street in winter, heat is not an upgrade, it is table stakes, and the absence is a deduction rather than the presence being a premium. |
| How big and how exposed is the pool? | Surface area and wind exposure drive heat loss. A large, open pool costs materially more to hold at temperature than a small, sheltered one. |
| Can you control it remotely? | If heating requires someone to physically visit the property, the amenity now carries a labor cost on top of the fuel, every single time. |
| Will you include it or charge for it? | This changes the economics completely, and it changes your listing. Decide before you install, not after the first guest asks. |
The owners who lose money on pool heat are rarely the ones who bought the wrong equipment. They are the ones who installed it and then left it alone.
Heat on the booking calendar, not on the thermostat. An unoccupied night costs the same to heat as an occupied one and earns nothing. If the home sits empty Tuesday through Thursday, the heater should be down and recovering for the Friday arrival, not holding temperature for nobody.
Use a cover when the pool is not in use and the property is vacant. Most of a pool's heat loss goes out of the surface overnight. Covering it is the cheapest heat you will ever buy, and it is the step that gets skipped because it is somebody's job to go do it.
Decide your pricing posture and hold it. Including heat in the nightly rate makes the listing simpler and the conversion cleaner, but it means you are paying for heat on every winter booking whether the guest swims or not. Charging separately protects the cost line but introduces a negotiation at exactly the moment the guest is deciding. Either is defensible. Drifting between them is not.
Say it clearly in the listing. A heated pool is a different amenity from a pool, and a winter guest shopping Southeast Florida is looking for the word. If you are paying for the heat and your listing does not lead with it, you are carrying the cost and none of the conversion.
The reason heated pools get underwritten badly is the same reason a lot of short-term rental investments get underwritten badly. Owners treat the property as passive income, so they look for things to buy rather than things to run. A heater is a thing to run. It has a schedule, a bill, a maintenance interval, a listing implication, and a pricing decision attached to it, and every one of those has to be handled every week by somebody who knows what next weekend's calendar looks like.
Short-term rental is a business. It is passive for the owner only because somebody else is doing the work. If nobody is making the weekly call about whether the heater runs Tuesday night, the amenity will cost you the most it can possibly cost you and return the least it can possibly return.
This is also where the distance problem shows up. Whether a January guest in Deerfield Beach expects a heated pool, whether the homes on your block already offer it, how early the season turns in your particular pocket of the coast — these are local facts, and they change by a few miles. A manager running a national portfolio from a call center applies one playbook to Florida, Arizona and the Carolinas, because applying twelve is not a thing a centralized operation can do. Structurally, they cannot do local well. The heated pool question is a small, expensive example of the difference.
Pull your own winter revenue first. If December through March is a meaningful share of your year and your guests are families, heat is probably defensible and the question is only which system fits your calendar. If your winter is quiet, a heater is a cost looking for a reason.
Then get the energy figure for your specific pool from a local pool professional, with your surface area, your target temperature and your actual run schedule in the quote. Not a national average. Your pool, your coast, your calendar.
We manage homes across the Triangle in North Carolina and across Southeast Florida, from Miami up through Pompano Beach, Delray Beach and Deerfield Beach, and amenity decisions like this one are the kind of thing we model before an owner spends rather than after. If you want to know what your home should be earning in winter, and whether a heated pool would move that number, we will put together a free revenue estimate for your property.
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