AC installation in Pasadena

About AC installation in Pasadena

Short answer

A central AC replacement in Pasadena starts at $7,900 installed with Airwork, including the permit from City of Pasadena Permit Center, HERS testing and haul-away. We size it with a Manual J load calculation and quote a fixed price in writing.

What we see in Pasadena homes

Adding or replacing central air in an older Pasadena house is a design job before it is an equipment job. The first question is where ducts can run without cutting plaster or historic trim. Raised foundations usually allow supply ducts under the floor, with registers set into the floorboards. Where a crawl space is too tight, a high-wall ductless head can be cleaner than a duct run. Second-floor rooms in Craftsman houses are the hardest, since their attics are shallow and hot. A small air handler in an attic knee wall often serves those rooms well.

Outdoor equipment needs the same care. In landmark districts, a condenser in the front setback draws attention, so we look for side or rear spots first. Quiet variable-speed units help on narrow lots where neighbors are close. In Hastings Ranch and Linda Vista, ranch layouts make a standard attic system simple, and the work is mostly sizing and duct sealing. We apply at the Pasadena Permit Center, book the HERS test and leave the final paperwork with you. If PWP's heat pump rebate applies, it is in the quote.

Basement furnaces in older houses can often be replaced with a heat pump air handler in the same spot. That keeps the duct layout and avoids new work upstairs. Hastings Ranch homes near the foothills also benefit from a filter rack sized for smoke season.

Where the equipment goes in Pasadena homes

In Bungalow Heaven and other landmark districts, the condenser belongs at the side or rear, screened from the street. Driveway strips beside detached garages are a common spot, as long as service access stays clear. Basements, where they exist, are the best place for the air handler, since ducts can run up through the floor. Crawl-space installs need enough height for service, so we measure before committing to that layout. Second-floor rooms in Craftsman houses can be served from a knee-wall air handler or a ductless head.

Questions to settle before a Pasadena install

• Does the property sit in a landmark or historic district with design review?
• Can ducts run under the floor without disturbing original woodwork?
• Is the electrical service large enough, or does PWP need to upgrade it?
• Should the old gravity or floor furnace stay or come out?
• Would a heat pump that replaces both furnace and AC be worth the PWP rebate?

After the install

Pasadena's inspector and a HERS rater check the work, and we attend both visits. PWP rebate paperwork goes in within its 180-day window. You keep the permit, HERS certificate and warranty registration in one packet.

Many Pasadena homes were never designed for central air, so a new system has to fit around original construction. In Craftsman houses, we look for duct routes through closets and attics that avoid cutting original trim or plaster. When that is not possible, ductless heads or a small-duct high-velocity system can keep the house intact. We show each option with its trade-offs before quoting.

Pasadena's historic districts may review where a new condenser sits if it is visible from the street. We plan placement in side or rear yards to keep that review simple. Pasadena Water and Power pays a smaller heat pump rebate than some neighbors, so the choice between a heat pump and a straight AC depends more on your heating needs. We price both so the comparison is clear.

The NOAA weather station in Pasadena, Pasadena, averaged 42 days a year at 95°F or hotter and 12 days at 100°F or hotter in 2016-2025. Its hottest reading was 115°F on September 6, 2020.

California requires a permit for a new or replacement central system, and most replacements also need a third-party HERS test of duct leakage and system performance. We pull the permit, schedule the HERS rater and meet the inspector.

Pasadena's landmark districts, Bungalow Heaven among them, have design guidelines for exterior changes seen from the street. We plan condensers at the side or rear and check whether design review applies before the mechanical permit.

In Pasadena (ZIP codes 91101, 91103, 91104, 91105, 91106 and 91107), 51% of homes were built before 1960 and 73% before 1980; 67% of households heat with natural gas, and 45% of homes are detached single-family houses.

Pasadena is served by PWP. About $150 to $170 per ton for qualifying heat pumps, with a small bonus when equipment is bought in Pasadena. That is far more than for a standard AC, so we price both options.