Best AC Unit for Phoenix, Arizona


If you live in the Phoenix area, you’re no stranger to heat. When you live in this type of super-hot environment, you need an air conditioner that is going to cool your home efficiently, without breaking the bank. While the exact unit you purchase will be influenced by a number of factors including the size of your home, the condition and layout of your ducts, and the microclimate your home is in, there are a few ways you can help ensure you get the best AC unit for the job.

Lower Tonnage

Tonnage refers to the amount of cooling power your AC unit has. One ton is equal to the cooling power of one ton of ice over a 24-hour period. For a long time the popular train of thought was this: in areas like Phoenix, more tonnage meant a better cooling system.
In reality, too much tonnage for your house causes several problems:
• Over-large units wear out faster and need more maintenance than smaller units
• Over-large units do not run long enough to remove humidity from the air
• Over-large units use far more energy to cool the same area than a smaller unit does
With the latest energy efficient units on the market, the general recommendation for people living in super-hot areas like Phoenix is that if you are replacing your unit, you can probably opt for a new one that has 20% less tonnage than the old model. In fact, you probably won’t notice any difference in performance by lowering by half a ton, but you will notice a change in your energy bill.

High SEER Ratings

In Phoenix, it’s safe to say your AC unit is probably running quite a bit, and therefore drawing a lot of energy. By purchasing an energy efficient unit that has a high SEER (Seasonal Energy Efficiency Ratio) rating, you’ll be able to use a smaller unit and save money each month on your energy bills. AC units used in extreme heat areas have to battle the heat they produce, and the heat outside them to function properly. An energy efficient unit won’t heat itself up too much to function, and can still battle the temperature outdoors.
If you’re looking for the best value, opt for a unit that has a SEER rating somewhere in the middle; it will cost less upfront, while still providing enough of an energy reduction that it will pay for itself in just a few years.

Programmable Thermostat

If you’re looking for a new AC unit in an area with extreme heat, consider getting one that runs with a programmable thermostat. Most people think that when they leave the house for work in the morning, the best thing to do is to shut off the AC unit to save money on energy while they’re away. Unfortunately, that means that the house heats up in their absence, and when they turn the unit on again after returning home, it has to work twice as hard to get the temperature back down, using even more energy than if it had been left on all day.
By using a programmable thermostat, you can instruct the AC unit to raise the temperature in the house a few degrees while you’re gone to save energy, but the house doesn’t grow so warm that the AC unit has to undo the savings to make it comfortable again in the evening. Since most programmable units let you program up to a week at a time, you never have to worry about going out and leaving it running – or not – when you haven’t thought to adjust it.

Finding the Best Unit for You

The best way to find the best AC unit for you when you live in an oven-hot area like Phoenix is to call on a trained technician to visit your home. They’ll take a look at your duct work, the size and layout of your home, and the microclimate around your house. The evaluation will enable the tech to make the best recommendation for an AC unit that will give you the best performance. In the end, that’s everyone’s goal.

Precision September 19, 2017

Share This Post:

erik - owner


We want to help you learn about about all things air conditioning and heating! Have any questions or want to see us write about something? Give us a call, chat, or email and we'll do our best to help you out.


  • APS Qualified Contractor
  • BBB Accredited Business Logo
  • SRP certified contractor
  • Arizona Healt Pump Council
  • Energy star logo
  • Electric League of Arizona
  • NATE Logo

Testimonials & Reviews

See What Our Customers Have to Say

    • #
      Brett Walker

      I wanted to make sure my air conditioner was ready for summer. Fernando came out and made sure my unit was tip top. He was friendly, professional and not a sales man. Thanks Fernando!

    • #
      Jackie Barkenhagen

      Colin and Andrea were incredibly professional and knowledgeable. They did a great job representing the company. We will definitely contact them again for any HVAC needs that arise.

    • #
      Nick Corso

      We woke up in the middle of the nite on memorial day to a hot house. I called precision at 6am and they were here before noon. Simple problem fixed, cool house. I love these guys!

    • #
      Jeneen Piche

      Thank you Ray at Precision Air...the compressor on our AC went out last night and the house was HOT. This morning Ray was there to replace the compressor and had us feeling the cool air again in no time. Great customer service...quick response time and friendly from the first call until the repair was completed. Ray even offered to clean the filters! Thank you!!

    • #
      Cara Perlman

      I’m so glad I called Precision for my annual AC checkup!! Austin was professional, super friendly and answered all my questions. I’ve had more bad experiences with AC companies here in the valley than good ones. Precision Air will have all my hvac business going forward!! Thanks for being a reputable and honest company!!!

    • #
      Jeff Stanczak

      He did a great job; professional and knowledgeable! Kalin is the technician’s name and Precision Air and Plumbing should take a bow for hiring such an invaluable employee!!!

    • #
      Kingsley Evans

      Precision Air is a company of integrity. I signed up with them August 1st, 2019 for their AC maintenance plan for 2 years... Someone from their office called me a week ago to set up their yearly maintenance visit. SO GRATEFUL.

    • #
      Andrew Burkhart

      Precision Air and Plumbing is a wonderful company to work with! They are very experienced and professional. They have helped us in our home for many years via a/c service and air duct cleaning.

    • #
      David Topping

      It was time to replace our AC, and so our choice was Precision Air, as we've been with them for over 20 years. Teman & Julian did an excellent job on the installation today, arriving on time.

Contact Us

Feel free to contact us any time at 602-349-6922 for immediate assistance.

We offer 24 hour emergency service, and would be happy to schedule an appointment for you, or simply answer any questions you may have.

Precision Air & Plumbing

3045 N. Colorado St.
Chandler, AZ 85225

This field is for validation purposes and should be left unchanged.

© Precision Air & Plumbing 2022.