Rooftop AC replacement in northwest Tucson

Old unit out. New unit craned in. Done right on the roof.

A northwest Tucson homeowner needed a new rooftop system in the middle of a Tucson summer. We measured first, craned the new unit onto the roof, re-fit the ductwork to match, and sealed and coated the curb so the roof stays as tight as the house stays cool.

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The new gas/electric package unit on its sleepers on a white-coated flat roof, with the coated duct transition beside it and the mountains behind.

Actual photo from the job · July 2026

What we did

How we did it

Measure before we sell.

We came out first to measure the roof, the duct openings and the old unit, so the new system and every transition were sized to this house, not guessed from a model number.

Crane it in.

Out came the old package unit. A crane set the new 4-ton gas/electric unit on the roof, and we built new transitions to tie it into the existing supply and return ducts.

Seal it, test it, finish it.

New fused disconnect, surge protector and a smart thermostat. We started the system up, verified the refrigerant level and adjusted the airflow, then sealed the curb and coated it white to match the roof. A separate quality-control visit followed a week later.

From old unit to finished roof

Rooftop replacements are where shortcuts hide: a loose transition, an unsealed curb, a leak you find in the first monsoon. Here's what ours looks like.

Actual photos from the job

The old rooftop package unit before removal. — **Before.**The old package unit, at the end of its life.

The new package unit hanging from a crane above the roof. — **Lifted in by crane.**The new unit going up. No dragging equipment across the roof.

The roof with the old unit set aside and the supply and return openings exposed. — **Curb open, ducts ready.**Old unit off, openings exposed, so the new transitions fit the ducts exactly.

New sheet-metal duct transitions installed between the new unit and the roof curb. — **Custom transitions.**New sheet-metal transitions built on site to match this roof's duct layout.

The duct transition and curb sealed and coated white to match the roof. — **Sealed and coated.**Seams sealed and coated white to match the rest of the roof.

The written price is the price.

We put the full replacement price in writing before we start, and that's what you pay. This system carries a registered 10-year parts and labor warranty from the manufacturer, and a maintenance plan came with it. Qualifying residential, owner-occupied installations are backed by our written 1-year money-back guarantee. Need to spread out the cost? Financing runs from 0% APR plans to terms up to 15 years. See what goes into AC replacement across the Tucson area, more of our work in Tucson, or book a free replacement quote.

Rooftop AC replacement questions

Straight answers, no runaround. If yours isn't here, call us.

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We don't publish one customer's price. A new AC installation in Tucson starts around $10,500 for a 2- or 3-ton system and around $11,000 for a 4-ton, whatever brand goes in. A rooftop package unit is measured first and quoted in writing, and the quote is free. See AC replacement pricing.

One install day. We measured on July 22, craned the new unit onto the roof and installed it on July 29, and came back for a separate quality-control visit on August 5.

This system carries a registered 10-year parts and labor warranty, and a maintenance plan came with it. Qualifying residential, owner-occupied installations are also backed by our written 1-year money-back guarantee.

Rooftop unit on its last summer?

Get a free, written replacement quote from a family-owned team that's been serving Tucson since 2001. Read how the money-back guarantee works for qualifying residential, owner-occupied installations.

Call 520-655-8551 See the guarantee