# HVAC replacement in Phoenix, AZ

Source: https://ethohome.com/locations/arizona/phoenix/

> Cooling sized for Phoenix summers. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.

Cooling sized for Phoenix summers.

Phoenix sees more than 100 days a year above 100°F, and pavement can hold heat past midnight. Many older homes use rooftop units, and newer ones use attic air handlers.

## Climate

Phoenix sits in IECC Climate Zone 1B/2B and has a long, intense cooling season. Summer design temperatures exceed 108°F–115°F, and urban heat-island effects keep summer nights warm, so compressors get little rest in July and August.

## Local homes

Mid-century slump-block and brick ranches in Arcadia, Encanto, Uptown, and Moon Valley frequently use rooftop packaged heat pumps or gas-packs with metal ductwork exposed on or just beneath low-slope roofs. Master-planned communities in Ahwatukee, Deer Valley, Desert Ridge, Glendale, Peoria, and Surprise typically use ground-mounted split systems with horizontal air handlers in tile-roof attics.

## Utilities

Arizona Public Service (APS) or Salt River Project (SRP) for electricity (depending on neighborhood territory), and Southwest Gas where natural gas is available. Both APS and SRP require careful management of afternoon peak time-of-use rates and offer programs for smart thermostats and qualifying HVAC upgrades.

## Areas served

- Arcadia
- Ahwatukee
- Desert Ridge
- Biltmore
- Deer Valley
- Scottsdale
- Glendale
- Peoria
- Tempe
- Paradise Valley

## Recommended systems

- [Heat pumps](https://ethohome.com/services/heat-pumps/): All-electric split and rooftop packaged heat pumps are the standard across Phoenix, delivering high-ambient summer cooling and low-cost winter warmth.
- [AC replacement](https://ethohome.com/services/ac-replacement/): For homes with a gas furnace, upgrading to a high-EER2 two-stage or variable-speed central AC keeps indoor temps comfortable when Sky Harbor hits 115°F.
- [Smart thermostats](https://ethohome.com/services/smart-thermostats/): Essential for automating pre-cooling strategies on APS and SRP time-of-use and demand rate plans.

## Questions

### Should I get a rooftop package unit or a split system for my Phoenix home?

Your existing duct layout determines the configuration. If your Arcadia or Central Phoenix home currently has a rooftop packaged unit connected to roof-mounted plenums, we replace it with a newer rooftop package unit (including crane service and stand/curb sealing). If your home has a ground condenser and attic air handler, we replace it with a matched split system.

### How does pre-cooling work on APS and SRP time-of-use plans?

On APS and SRP time-of-use plans, electricity is significantly more expensive during late-afternoon peak hours. A properly sized two-stage or variable-speed system paired with a smart thermostat cools your home down a few degrees before the peak window starts, allowing your home's thermal mass to coast through the peak hours.

### How do monsoon storms affect Phoenix HVAC systems?

Summer monsoons bring sudden voltage fluctuations, blowing dust, and brief spikes in outdoor humidity. We verify proper electrical surge/disconnect setup and recommend deep-pleated media filters to capture fine desert dust.

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