Load Calculation
Manual J-style sizing so you get the right tonnage for your actual home, not the wrong tonnage that happens to match the label on the old unit.

Complete new-home and new-construction HVAC installations from load calc through final inspection.
For homes without existing central air, or for full system replacements where the old equipment is beyond salvage, Saguaro Mechanical delivers complete new-unit installations across the Valley. Most projects fall between $4,500 and $8,500 all-in — equipment, materials, labor, permits and startup.
The price range reflects real Valley homes: single-story 1,400 sq. ft. ranch on the low end, 2,800 sq. ft. two-story with tricky attic access on the high end. The written quote is fixed, not an estimate.
Every new-unit install includes matched components (never a mismatched coil and condenser), full permitting, and manufacturer warranty registration at the time of startup.
We coordinate directly with your city (Phoenix, Scottsdale, Glendale, Mesa, Tempe, Surprise) on permits and inspections so you don't have to.
Written scope, fixed pricing, and a real technician on every visit — not a subcontractor you've never met.
Manual J-style sizing so you get the right tonnage for your actual home, not the wrong tonnage that happens to match the label on the old unit.
Condenser, evaporator coil, air handler or furnace — all from the same product family for full rated efficiency and warranty.
New copper line-set where practical, brazed under nitrogen, pressure-tested and evacuated below 500 microns before charging.
New whip, new disconnect, correct breaker sizing — inspected and up to current NEC and local code.
Smart thermostat included on most installs, wired and configured for your specific equipment stages.
Old equipment hauled off, refrigerant reclaimed to EPA spec, job site left cleaner than we found it.
Load calc, duct check, options review, financing discussion if needed.
Written, itemized, valid 30 days. Multiple efficiency tiers presented.
We handle the paperwork with your city.
Typically one day for a standard swap, two for larger or new-construction jobs.
City inspector signs off, system is commissioned, warranty registered.
Written quote before work starts. No day-of surprises.
0% and low-interest programs available through our HVAC financing partners for qualified buyers.
Registered manufacturer parts warranty plus our own labor warranty on the install itself.
Every new-unit install is permitted where required and passes city final inspection.
Tonnage, efficiency tier (14 vs. 16+ SEER2), single-stage vs. two-stage or variable, single-story vs. two-story, attic access, existing electrical, and whether the ductwork needs any work. A one-hour on-site visit is enough for a fixed number.
Minor duct repairs and sealing typically yes. Full duct replacement is quoted separately.
One day for a straight swap. Two days for larger homes, new construction, or when ductwork or electrical work is added to the scope.
Yes — 10-year manufacturer parts warranty when we register the equipment at startup, plus our own labor warranty on the install.
Yes, year-round. In peak July heat we prioritize no-cool emergency installs and can typically have equipment set within 24–72 hours of the signed quote.
This service is available in every community we cover — click your area for local details, response times and ZIP-level coverage.