AC Installation Services

AC installation cost varies significantly based on the system selected, home size, installation complexity, existing infrastructure, and whether modifications are needed — new electrical circuit, ductwork repair, new refrigerant lines. A standard split-system replacement on a home with existing ductwork is very different from a new installation without ductwork. We evaluate your home and provide upfront pricing after assessing the installation requirements.

A standard central AC replacement — same equipment footprint, existing ductwork and electrical — typically takes one to two days. More complex installations involving new electrical, ductwork work, or different equipment configurations take longer. We provide a realistic timeline after evaluating your home and existing system.

Factors that favor repair: the system is under 10–12 years old, uses R-410A refrigerant, the failed component is a capacitor or contactor (relatively inexpensive), and no other components show wear. Factors that favor replacement: system is 12–18+ years old, uses R-22 refrigerant, the compressor has failed, repair cost exceeds 50% of new system cost, or the system has needed multiple repairs recently. We give you an honest evaluation after assessing your specific system.

Most central AC systems last 12–18 years with proper annual maintenance. Colorado's shorter cooling season (compared to Texas or Arizona) means AC systems accumulate fewer annual hours, potentially extending service life. Skipping annual maintenance — particularly condenser coil cleaning — significantly shortens service life by allowing the system to run under stress continuously.

AC sizing should be based on a Manual J load calculation — not just square footage. Insulation levels, window area and type, ceiling height, home orientation, Colorado's altitude, and air sealing quality all affect the right size. An oversized AC short-cycles, creating humidity problems and compressor wear. An undersized unit runs constantly and can't keep up during peak summer heat.

Consider replacement when: the system is 12–18+ years old, repair costs have been escalating, it uses R-22 refrigerant and needs service, the compressor has failed, it can't maintain comfortable temperatures on moderate days, or a single repair would cost 50%+ of a new system. Don't wait for a complete failure during a heat wave if multiple warning signs are present.

Key replacement indicators: frequent repairs over the past 2–3 seasons, noticeably higher electricity bills without change in usage patterns, the system can't keep the home cool on hot Colorado days, unusual noises that have worsened over time, the system is over 15 years old, or it uses phased-out R-22 refrigerant. Any combination of these makes a replacement evaluation worthwhile.

The repair-vs-replace decision comes down to age, repair cost, and reliability history. A useful rule: if repair cost × remaining useful years of the system is less than replacement cost × expected life of a new system, repair makes sense. A failed capacitor on a 10-year-old system is clearly repair. A compressor failure on a 16-year-old R-22 system is almost always replacement.

Modern minimum-efficiency central AC systems significantly outperform equipment from 10–15 years ago. The minimum SEER2 standard has increased over time. Beyond minimums, high-efficiency systems rated 16–20+ SEER2 further reduce energy consumption, particularly relevant for Colorado homes during the peak summer months when cooling demand is highest.

Beyond the equipment itself: ensure the air filter is replaced monthly (a clogged filter kills efficiency), have the condenser coil cleaned annually, ensure attic insulation is adequate, seal air leaks in the home's envelope, keep direct sunlight off west and south windows during peak afternoon heat, and set the thermostat to a consistent temperature rather than large swings that force the system to work harder to recover.

Priorities in order: proper sizing (the most important factor — even the best equipment performs poorly if wrong-sized), reputable equipment brands with proven reliability, adequate warranty (compressor warranty especially), correct refrigerant for long-term serviceability, SEER2 rating that makes sense for your climate and ownership timeline, and a contractor who does a Manual J calculation rather than matching whatever was there before.