There is nothing quite like stepping into a warm pool on a cool morning, coffee in hand, while the rest of the street is still deciding whether it is swimming weather. If you have just had a Rheem pool heater installed, or inherited one with a new home, getting to know it is the first step to relaxed, year-round swims.
The good news is that these units are built to be easy to live with. This guide walks you through the basics of running your Rheem pool heater day to day, from a safe start-up to setting the right temperature and keeping it in good shape. It is a general guide, so always keep your model’s user manual handy for the specific button layout, and reach out to a professional if anything is unclear.
Getting to know your heater
Your Rheem pool heater is a heat pump, which means it does not burn fuel or generate heat from scratch. It draws warmth from the surrounding air and transfers it into your pool water, which is why it is one of the more efficient ways to heat a pool.
Most units in the Rheem Thermal Compact range share a similar set of controls: an easy-to-use LCD touchscreen with a handy lock function, WiFi control through a compatible app, and higher temperature settings for spa use. Some models can cool the water as well as heat it, which is a welcome feature on those sticky summer nights.
Before you switch it on
A little care at start-up protects your investment and keeps things running smoothly.
Get the water flowing first
This is the single most important habit to build. Your pool’s filtration pump needs to be running and circulating water before the heat pump is switched on, and the heat pump should be turned off before the filtration pump stops. Running the heater without water moving through it can damage the unit.
If your heater is connected to a pool automation system or a Rheem pump controller, this sequencing is usually handled automatically, so the system starts and stops everything in the right order. If you operate things manually, just remember the simple rule: pump on first, heater on second; heater off first, pump off second.
A quick once-over
Before the first swim of the season, take a moment to check for any water leaks around the plumbing fittings and make sure the unit is sitting level with its condensate drain clear. A quick look now saves headaches later.
Setting the right temperature
For most Australian families, a comfortable pool sits somewhere between 26 and 28 degrees or nudges it towards 29 degrees – older family members are swimming, since they tend to feel the cold sooner. Spa users can set higher again using the spa mode.
If your pool has been sitting cold and unused for a while, be patient with that first big warm-up. Heating a full pool from cold can take anywhere from 24 to 72 hours to reach your desired temperature, depending on your pool size, the weather and how warm you like it. That is not the heater struggling; it is simply what it takes to gently warm a large body of water. Once you have reached your ideal temperature, you can set a daily timer so the heater climbs back to that same comfortable warmth at the same time each day, holding it there with far less effort and cost.
It pays to be thoughtful with the dial. As a rough rule, every extra degree of warmth can add somewhere between 10 and 30 per cent to your heating costs. With the federal household energy rebates having wrapped up at the end of 2025, running costs are worth keeping an eye on, so it is worth finding the lowest temperature your family is happy with rather than cranking it up out of habit.
Controlling your heater from anywhere
One of the nicest touches on a modern Rheem pool heater is WiFi control. By connecting the unit to a compatible smartphone app (check your manual for the current app), you can adjust the temperature, set heating schedules and check on things without leaving the couch, or even from work on the way home.
A few features worth exploring in the app and on the touchscreen:
- Timers and schedules: set the heater to reach temperature just before your usual swim time, so you are not paying to heat water no one is using.
- Boost and quiet modes: use Boost when you want to warm up faster, and the quiet setting for low-noise running during relaxed evenings.
- The lock function: handy for stopping small hands from rewriting your settings.
- Family sharing: most apps let you give other household members control, so you are not the only one on heater duty.
Running it efficiently
Getting the most comfort for the least cost mostly comes down to a few simple habits.
A well-fitting pool cover is the biggest win of all. It dramatically reduces heat loss overnight and slows evaporation, which means your heater works less to hold the same temperature. The Australian Government has practical guidance on covers and efficient pool running that is well worth a read.
Beyond that, only heat when you need to. If the pool will sit unused for several days, turn the temperature down or switch the heater off. Pairing your heating with your normal filtration cycle also keeps things tidy and efficient.
Keeping your Rheem pool heater in good shape
A little regular attention goes a long way. Once a month or so, give the unit a quick check: clear away leaves and debris, make sure the air inlet and outlet are not blocked, and keep the weather cover on when the heater is not in use so it stays clean.
Book a professional service once a year for a residential unit. A qualified technician will keep it running at its best and help protect your warranty, which on the Rheem Thermal Compact range covers 3 years parts extending to 10 years on the compressor and 25 years on the heat exchanger (parts only).
In cooler weather, the heater manages frost on its own through automatic reverse-cycle defrosting, so there is nothing you need to do. If you live somewhere that gets very cold and you are leaving the heater unused for a long stretch, have the water drained from the unit to prevent any ice damage to the internal pipework.
A quick word on safety
A heated pool is an inviting pool, which often means more little swimmers more often. Royal Life Saving’s Keep Watch message is a good one to keep in mind: actively supervise children around water, stay within arm’s reach, and make sure your pool fence and gate are secure and working. Warm water is wonderful, and a moment’s supervision makes it wonderful and safe.
Ready for year-round swims
Once you have the rhythm, using your Rheem pool heater becomes second nature: get the water flowing, set a comfortable temperature, lean on the app and timers, keep the pool covered, and book that annual service. Do those few things and your heater will quietly get on with the job of turning your backyard into a year-round oasis.
If you would like a hand choosing settings, sorting a service, or picking the right unit for your pool, the team at Sunshine Pool Outlet is here to help. Explore our Rheem pool heater range or book a service or get advice, and we will help you make the most of every season.
