Whether you are replacing a tired system in a 1950s home or adding cooling to a house that only ever had a furnace, a new AC is only as good as the installation behind it. We size every La Crescenta system with a real load calculation, not a square footage guess, so it keeps up with hot valley summers without being oversized.
Repairing an aging system is not always the wrong call, but sometimes a new install is the smarter financial decision. These are the clearest signs it is time to stop repairing and start planning a replacement.
Most residential AC systems are built to last 12 to 15 years. Past that mark, efficiency drops and the odds of a major component failure rise sharply, even with regular maintenance.
If you have called for repairs more than twice in the last two summers, or a single repair quote is approaching half the cost of a new system, replacement usually saves money over time.
Many La Crescenta homes from the 1940s through the 1960s were built with heat only. Adding cooling can be simple if the existing system can carry it, or it may call for a heat pump or ductless zones. We check before we recommend.
R-22 was phased out of production in 2020. If your system still uses it, refrigerant for a leak repair is expensive and getting harder to source, and replacement is often the more practical route.
Some rooms cold, others warm, no matter the thermostat setting, often means the system was undersized or poorly matched to the home from the start, not just a maintenance issue.
A system that short cycles or runs nearly nonstop is either the wrong size for the home or losing efficiency fast. Either way, a proper load calculation on a new install usually resolves it for good.
La Crescenta sits around 1,500 feet up between the San Gabriel and Verdugo Mountains, and the ridges keep most of the ocean air out. That means a system sized for a coastal home will fall short here. August highs sit in the high 80s, heat waves push well into the 90s, and the AC often runs long cycles for weeks at a time.
Location on the slope matters too. Homes above Foothill Boulevard get more sun and wind and often have tight side yards for the outdoor unit, while homes near Honolulu Avenue and Montrose sit lower and more sheltered. We look at sun exposure, insulation, the electrical service, and where the condenser can breathe before choosing a size.
We measure the home, inspect existing ductwork, and run a Manual J calculation to determine the correct tonnage for your specific property.
You get a clear, itemized quote showing the equipment, SEER rating, and total cost before anything is ordered.
Old equipment is removed, new line sets are brazed, and the system is installed to manufacturer and code specifications, typically in a single day.
We verify refrigerant charge with digital gauges, test airflow at every vent, and walk you through the new thermostat before we leave.
Final pricing depends on tonnage, SEER2 rating, and your home's electrical and line set condition. These are typical ranges for a full installation in La Crescenta.
| System Type | Typical Range |
|---|---|
| 2 to 2.5 ton, standard SEER2 | $5,500 – $8,500 |
| 3 to 3.5 ton, standard SEER2 | $6,500 – $9,500 |
| 4 to 5 ton, standard SEER2 | $8,000 – $12,000 |
| High-efficiency upgrade (18+ SEER2) | Add $1,500 – $4,000 |
| Smart thermostat upgrade | Add $250 – $600 |
TOP CLUB members and financing options are available. Every quote is written and itemized before any work begins.
Free load calculation, written itemized quote, and financing options available.
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