Pool Heater Auto Restart: After a Power Loss
Short answer: Auto restart is a heater listing term for a model that returns to its previous operation after a power outage, instead of staying off until it is reset by hand. Gas and propane heaters with electronic ignition and heat pumps with control boards are the types that state the feature. Solar collectors do not have their own restart. When a title does not say auto restart, the seller has not stated it, and the maker's manual is the next place to look.
What auto restart means in a listing
Auto restart is a listing term for a pool heater that returns to its previous operating state after a power outage. The seller states the feature when the heater's control board keeps the last set temperature and resumes operation once electricity is back. A heater without the feature stays off until someone resets it by hand.
The phrase appears in several forms. A title may say auto restart, automatic restart, or power failure recovery. They all mean the same thing: the heater attempts to go back to the way it was set. When a listing says only restart, the seller has not stated whether that restart is automatic.
| Wording | What the seller states |
|---|---|
| Auto restart or automatic restart | The heater returns to its previous setting on its own |
| Restart | A restart exists; the seller does not state whether it is automatic |
| Power failure recovery | The control board keeps the setting through a power outage |
| Not stated in the title | The listing does not address restart |
Which heater types state auto restart
Gas and propane heaters with electronic ignition commonly state auto restart in their titles. After power returns, the heater runs through its ignition sequence to relight the burner. Heat pumps with digital control boards also state the feature, since the board holds the set temperature and the unit resumes when the outage ends. Hybrid heaters, which combine a heat pump and a gas heater, state the restart for either side of the unit.
Solar heaters are a different case. The collector has no burner and no control board, so a solar title does not state auto restart for the collector itself; the pump that circulates the water is the equipment that restarts. See the solar pool heater guide for how those listings read.
The wiring that supplies the heater's control board is decided by a licensed electrician, the maker's manual, and the local building office, not by a listing phrase.
Gas heaters and the restart sequence
For a gas heater, auto restart means that after power returns the unit runs through its built-in checks and then relights the burner to reach the set temperature. The word restart in a title does not describe how quickly the sequence happens; this site does not compare heaters on relighting speed. The ignition system explainer describes the parts named in a listing.
The fuel source matters for the shopping decision. A home with natural gas and a home with a propane tank read different listings, but the restart feature reads the same way in both.
The gas supply and the ignition setup are installed by a licensed gas installer according to the maker's manual; the CDC carbon monoxide page is listed in the sources below.
Heat pumps and their control boards
A heat pump heater has a control board that stores the set temperature. When the outage ends, the board returns the unit to that setting. Titles state the feature as auto restart or as return to previous setting. A heat pump whose listing does not state it may require a manual reset; the absence is an unstated detail, not a judgment on the model.
For a heat pump purchase, compare the stated features across listings with the heat pump guide or the inverter heat pump guide. Auto restart is one of the control features that appear in titles.
Reading a listing without the auto restart phrase
Many heater titles do not include the phrase. A title carries a limited number of feature words, and restart may not be among them. When the term is missing, the seller has not stated whether the heater restarts on its own. That is a description of the listing, not a claim about the heater.
The maker's manual is the source that states how the model handles a power outage. The manual lists control features such as thermostat control and standby mode, and it names whether a restart is automatic. The heater controls explainer covers the control words used in titles.
What auto restart does not state
The phrase auto restart carries no promise about how fast the heater returns to set temperature, how much energy the heater uses, or how the heater performs in cold weather. Those are separate listing features or manual details. This site reads auto restart as a stated control feature only, and the buying guides compare stated details rather than performance claims.
A buyer should also compare the heater type before the restart feature. The type comparison explainer covers heat pump versus gas, and the fuel choice is a separate decision from the restart wording.
What to check in the manual before buying
Before buying, the maker's manual answers three questions: does the model resume heating on its own after a power outage, does a manual reset clear the stored temperature setting, and what happens to the set temperature when power is lost. The words to look for match the listing terms: auto restart, power failure recovery, and previous setting.
The buying guides sort heaters by pool type and fuel. Start with the natural gas heater guide, the propane heater guide, or the inground heater guide, and match the restart wording against the manual.
- Does the model state auto restart in the listing and the manual?
- Does a manual reset clear the set temperature?
- Where does the maker publish the manual for this model?
- Is the heater for an above ground or inground pool?
What to pick for your situation
| If you | Pick | Buying guide |
|---|---|---|
| Power goes out often where you live | A gas or heat pump heater whose listing states auto restart | Best Natural Gas Pool Heaters (2026): 15 Picks |
| You want a heat pump that returns to its set temperature | A heat pump with a control board that states auto restart | Best Pool Heat Pumps (2026): 15 Picks |
| You prefer an inverter heat pump | An inverter heat pump model whose listing states auto restart | Best Inverter Pool Heat Pumps (2026): 9 Picks |
| The listing does not mention restart and you want the feature | A different listing that states the term, or a plan to reset by hand | Best Propane Pool Heaters (2026): 15 Picks |
| You are heating an above ground pool | An above ground pool heater whose listing states auto restart | Best Above Ground Pool Heaters (2026): 14 Picks |
| The heater serves an inground pool | An inground pool heater; confirm the restart wording in the manual | Best Inground Pool Heaters (2026): 15 Picks |
Questions
Does every pool heater restart after a power outage?
No. Auto restart is stated only on models whose control board resumes operation after power returns. When a title does not state the term, the seller has not stated the feature.
What does auto restart do to the temperature setting?
The control board keeps the last set temperature, so the heater returns to that setting after power is back. The maker's manual states how the specific model stores the setting.
Do solar heaters include auto restart?
A solar collector has no control board, so the title does not state restart for the collector. The pump that moves water through the collector is the equipment that restarts.
Is auto restart the same as the heater relighting immediately?
No. The word says the heater attempts to resume; the ignition sequence and its timing are described by the maker's manual, not by the listing.
What if the listing does not say auto restart?
The seller has not stated the feature. Read the manual before buying to learn whether the heater resumes automatically or needs a manual reset.
Who decides how a heater is wired after a power outage?
A licensed electrician, the maker's manual, and the local building office decide the electrical setup for the heater. A listing phrase is not an installation instruction.
Recent updates
- : First published.