The buildings here
Post-war and mid-century ranch homes with low-slope roofs through the Maple Ash and Mitchell Park blocks near ASU, 1970s homes around The Lakes with its waterfront lots, and 1980s and 1990s two-story builds in Warner Ranch and the southern 85284 corridor.
The mid-century core
The streets between Mill Avenue and Rural Road, through Maple Ash and around Mitchell Park, are some of the oldest residential blocks in the East Valley that are still ordinary neighborhoods rather than historic showpieces. Low-slope roofs, block or frame construction, carports converted to garages, and attics you cannot sit upright in. Cooling was retrofitted into most of them, and a good number ended up with a package unit dropped on the roof because there was nowhere else for it to go.
Those rooftop units are the defining Tempe service issue. Full sun from sunrise to sunset, roof heat coming up through the base, and a curb that has been resealed by whoever was cheapest over the past thirty years. When we diagnose one we check the curb gasket and the duct transition below it as a matter of course, because a leak there feeds roof-temperature air directly into the supply and no repair in the cabinet will make up for it.
Rentals, ASU and the August squeeze
Tempe has a much higher share of rental housing than the rest of the East Valley, and the turnover calendar clusters around the start of the academic year. That puts move-in week and the hottest stretch of summer in the same fortnight. For owners and managers, the useful move is getting systems checked in April and May rather than discovering a dead capacitor the day a tenant collects keys.
We are set up for that work: access coordinated with the tenant, a condition report with static pressure, temperature split and capacitor readings, photographs of the unit, and an invoice addressed to the management company rather than the occupant.
The Lakes, Warner Ranch and the southern end
South of the US 60 the housing gets newer and the systems get more conventional: split systems with attic or closet air handlers, two-story plans in Warner Ranch and the 85284 corridor, and duct runs long enough that the far bedroom is a regular complaint. The 1970s homes around The Lakes sit somewhere in between, often on a second system now, with waterfront lots that see marginally more condensate work through the monsoon.
Trees, shade and the spring rinse
The older Tempe streets have genuine tree canopy, which is a real advantage on roof load and afternoon temperatures. The cost is organic debris. Cottonwood fluff and seed pack a condenser coil quickly, and a coil matted with it in May is a compressor working against itself in July. A rinse from the inside out before the season starts is worth more on these houses than almost anywhere else we work.
What matters locally
Rooftop package units on flat roofs
A large share of Tempe tract homes cool from a package unit on a low-slope roof. Those units take full sun all day, and the curb seal and duct transition underneath are as important as anything inside the cabinet.
Rental turnover runs on a schedule
August move-in around ASU is also peak heat. Landlords and property managers here need a system checked and signed off between tenants, usually inside a narrow window, and an invoice that goes to a management company.
Shallow attics and tight crawl space
Mid-century Tempe homes have very little attic height. Duct work happens lying flat through a small hatch, which affects both the time a job takes and whether a duct replacement is realistic at all.
Mature trees and coil litter
The older Tempe streets have real shade, which helps the roof load. It also means seed, leaf and cottonwood fluff finding its way into condenser coils every spring, and that has to be rinsed out before summer.
Jobs we do most often in Tempe
- Rooftop package unit repair and replacement
- Between-tenant system checks with a written condition report
- Capacitor and contactor failures on 1970s equipment
- Condensate and float switch work on closet air handlers
- Duct sealing in shallow mid-century attics