In the Phoenix area, summer puts the most strain on your AC, your roof, your pool and your power bill. Have your AC serviced in spring, change filters often, and use your utility's time of use plan by cooling the house before the afternoon peak. Run pool pumps off peak, adjust your irrigation, check your roof before monsoon storms, and never shut the AC off in an empty house. If you'll be away, set the thermostat, not off, and have someone check on the home.
If you've just moved to the Phoenix area, your first summer will teach you a lot about your house. Heat changes how everything works. Your AC runs for hours, your power bill climbs, the pool loses water by the day and the roof bakes in the sun. None of that is a reason to worry. It's a reason to plan. Here's what I tell every new owner before their first summer.
Your AC comes first
In Arizona, the AC isn't a comfort item in summer. It's the most important system in the house. Have it serviced in spring, before the heat arrives and before contractors get busy. A technician will clean the coils, check the refrigerant and test the parts that tend to fail first.
Then keep up with the basics yourself:
1 - Change or clean your air filter every month or two during summer
2 - Keep plants and debris a couple of feet away from the outdoor unit
3 - Keep the condensate line clear so it doesn't back up and leak
4 - Know the age of your system and set aside money for its replacement
Line up an AC company you trust now, so you aren't searching for one on a 115 degree afternoon. Indoor heat is a real health risk here. When the Arizona Attorney General pressed a Glendale apartment complex to restore cooling in July 2026, her office cited 111 heat related indoor deaths in Maricopa County the year before that involved air conditioning that wasn't working or wasn't working well. If your AC fails in summer, treat it as urgent.
Your power bill and time of use plans
Summer is when power prices go up. SRP, for example, prices its residential plans in three seasons: winter from November through April, summer in May, June, September and October, and a summer peak in July and August with the highest prices of the year. On time of use plans, electricity costs much more during the weekday afternoon and early evening peak.
The way to save is to cool the house before the peak starts, let the temperature drift up a few degrees during the peak, and run the dishwasher, washer, dryer and pool pump in off peak hours. Whether your home is on SRP or APS depends on the address. I compare the two in SRP vs. APS for home buyers.
A few things in the house help too. Ceiling fans, good window coverings on west facing windows, sunscreens, attic insulation and a well sealed attic access all reduce how hard the AC has to work. If you have solar, summer is when it earns its keep. More in Solar panels and selling your home.
The pool in summer
A pool is a big part of summer life here, and it needs more attention when it's hot. Water evaporates fast, so check the level often and top it off. Algae grows quickly in warm water, so keep your chemistry balanced and run the pump enough to keep the water moving. Set the pump to run in off peak hours when you can. More on what to know about pools in Pool homes in Arizona.
The roof and monsoon season
Summer sun is hard on roofs. On a tile roof, the tiles last a long time, but the underlayment beneath them ages in the heat and is what actually keeps water out. Late summer brings monsoon storms with high wind, dust and sudden heavy rain. Before monsoon season, have the roof looked at, clear the gutters and scuppers, and trim trees near the house. See Tile roof underlayment in Arizona and Monsoon season home prep.
Yard and irrigation
Desert plants still need more water in summer, but overwatering wastes money and can harm them. Adjust your irrigation timer for the season, water early in the morning, and check drip emitters for clogs and leaks. Many Valley cities publish seasonal watering guides for their customers. A sudden jump in your water bill usually means a leak somewhere in the irrigation. More on how water service works in How water service works in Arizona.
The garage and the attic
Arizona garages and attics get extremely hot. Don't store paint, aerosol cans, candles or electronics in the garage over the summer. If your water heater is in the garage, keep the area around it clear. An insulated garage door and good attic ventilation can make a real difference in how hot the rest of the house gets.
If you're away for the summer
Plenty of owners spend the hottest months somewhere cooler. If that's you, never turn the AC off. Set it to a higher temperature instead, since a closed house in a Phoenix summer can get hot enough to damage finishes, electronics and anything in the refrigerator. Shut off the main water supply or at least the irrigation if your setup allows it, arrange for someone to check the house regularly, and tell your insurance company if the policy requires notice when the home is empty. More in Second home buyers' guide.
If you're buying in summer
Summer is actually a good time to test a home. The AC is under real load, so your inspector can see how it performs. Ask for twelve months of utility bills, including July and August, so you know what a summer costs in that house before you buy.
The bottom line
An Arizona summer is manageable when you prepare for it. Service the AC, use your power plan to your advantage, care for the pool and roof, and never leave an empty house without cooling.
Send me a message if you'd like a contact for an AC company, a roofer or a pool service. I'm happy to share who I'd call.
Questions, answered.
When should I service my AC in Arizona?
In spring, before the summer heat and before contractors get busy.
When are summer power prices highest in Arizona?
For SRP customers, the summer peak season is July and August, with summer pricing in May, June, September and October.
Should I turn off my AC if I'm away for the summer?
No. Set it to a higher temperature instead. A closed house in a Phoenix summer can get hot enough to cause damage.
How can I lower my summer electric bill?
Cool the house before the afternoon peak, run big appliances and the pool pump off peak, and reduce heat gain with fans, window coverings and insulation.
Is summer a good time to inspect a home in Arizona?
Yes. The AC is under full load, so the inspector can see how it really performs.
Want to talk it through?
Bring me the specifics of your situation and I will tell you straight what I would do. No pitch, nothing to sign, and no obligation to work with me afterward.
Ask me about summer home care