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AC Installation in Pasadena, CA

The short answer

AllPro HVAC Services installs central air conditioners and heat pumps in Pasadena homes. Each system is sized to your house through a load calculation, and we check your ductwork and electrical service before installing. We also confirm which utility rebates apply to your address before quoting them.

Pasadena summers can run long and hot, and an air conditioner that is the wrong size, poorly placed, or connected to leaky ducts will struggle on the days you need it most. AllPro HVAC Services installs central air conditioners and heat pump systems for homes across Pasadena, from ZIP codes 91101 through 91107 and 91125. Our base in Los Angeles is about 7 miles southwest of the city. This page covers what matters for a new AC system in Pasadena specifically: sizing for inland heat, working with older houses, choosing between a straight AC and a heat pump, and checking which rebates actually apply to your address.

Sizing an AC for Pasadena's Inland Heat

Los Angeles has a Mediterranean climate with dry summers and mild winters, but inland areas run much hotter in summer than neighborhoods near the coast. Pasadena is well inland, so a system that would be fine for a beach-area home can fall short here. Fall Santa Ana winds can also bring hot, dry spells late in the season, after many people expect the heat to be over.

That doesn't mean bigger is better. An oversized unit cools the air quickly, shuts off, and cycles again. This wastes energy, wears parts faster, and leaves rooms feeling uneven. We size equipment with a load calculation that accounts for your home's square footage, insulation, windows, sun exposure, and ceiling heights. We don't rely on a rule of thumb or simply match the old unit's size.

Installing AC in Older Pasadena Homes

Many Pasadena houses were built before central air was common. Some have no ductwork at all, some have ducts sized only for a furnace, and some have limited attic or crawlspace room. Before recommending a system, we look at what your house can realistically support.

Depending on what we find, options can include reusing and sealing existing ducts, adding or resizing duct runs, or using ductless mini-split heads in rooms that are hard to reach. We also check your electrical panel, because adding a new outdoor unit sometimes requires a dedicated circuit or panel work.

Central AC or Heat Pump?

A heat pump cools exactly like an air conditioner and can also heat your home in winter. Pasadena winters are mild, so a heat pump can often handle heating on its own. That lets you replace an aging furnace and AC with one system.

If you currently have a gas furnace, the furnace decision matters too. South Coast AQMD Rule 1111 limits NOx emissions from natural-gas central furnaces sold and installed in this region. The district has been amending the rule toward zero-emission requirements, and it sets and revises the compliance dates. If you're planning a furnace replacement alongside a new AC, check the current rule first. We can walk you through how a heat pump fits into that picture.

Rebates and Tax Credits: What Applies in Pasadena

Equipment rebates depend on which utility serves your address. LADWP offers rebates on qualifying heat pump systems to its residential customers, but Pasadena is outside the City of Los Angeles, so that program may not apply to your home. We confirm the current offer from your utility before we include any rebate in a quote.

On the federal side, the Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025. It is not available for new installations after that date.

What a Pasadena AC Installation Involves

Every job is different, but a typical installation follows these steps:

  • An in-home visit to measure the house, inspect ducts, and check electrical capacity
  • A load calculation and equipment recommendation, with options explained in plain terms
  • Removal and disposal of the old equipment, if there is any
  • Setting the outdoor unit on a level pad, with attention to clearance and noise near property lines
  • Installing or connecting the indoor coil or air handler, refrigerant lines, condensate drain, and thermostat
  • Sealing duct connections and checking airflow to each room
  • Startup, refrigerant charge verification, and a walkthrough of how to operate and maintain the system

Serving Pasadena and Nearby Cities

Along with Pasadena, we install AC systems in San Marino, South Pasadena, San Gabriel, Alhambra, and Glendale. We also offer 24/7 emergency service if an existing system fails during a heat wave while you're planning a replacement.

More services in Pasadena

Related

What to expect

How a visit goes

  1. Diagnosis before recommendations

    We find the cause of the problem first, then recommend a fix. You'll know what's wrong and why before we start any work.

  2. Straight talk on repair vs. replace

    Not every breakdown means a new system. We lay out the trade-offs so you can decide what fits your home and budget.

  3. Rebates checked for your address

    Rebate programs depend on which utility serves your home. We confirm the current offer for your address instead of assuming.

FAQ

Common questions

Don’t see your question? Call (213) 444-2507 and we’ll talk it through.

How do I know what size AC my Pasadena home needs?

The right size comes from a load calculation based on your home's size, insulation, windows, sun exposure, and layout. Matching the old unit's size isn't reliable, because the old system may have been sized incorrectly.

Can you install central air in a house with no ductwork?

Often, yes. We can add ductwork where there's attic or crawlspace room. In rooms that are hard to reach, ductless mini-splits are another option. We'll tell you what's practical after seeing the house.

Is a heat pump a good choice in Pasadena?

For many homes it is. Winters are mild, so a heat pump can usually handle both cooling and heating. That's worth considering if your furnace is also near the end of its life.

Can I get the LADWP heat pump rebate in Pasadena?

LADWP rebates are for LADWP residential customers. Pasadena is outside the City of Los Angeles, so check which utility serves your address. We confirm current rebate offers before quoting them.

Is there still a federal tax credit for a new heat pump?

No, not for new installations. The 25C credit applied to qualifying heat pumps placed in service before December 31, 2025.

Do I need to replace my furnace when I install a new AC?

Not always. If your furnace is aging, though, it can make sense to plan both together. Gas furnace replacements are subject to South Coast AQMD Rule 1111, so check the current compliance requirements first.

Need Heating or Cooling Help?

Whether your system needs a repair, a tune-up or a replacement, AllPro HVAC Services can take a look and explain your options. Emergency service is available 24/7.

(213) 444-2507
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