AC Installation in Hewlett Harbor, NY

Cool Comfort That Actually Lasts

Professional AC installation that keeps your home comfortable all summer long without the breakdowns.

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Professional HVAC Installation Services

What Proper Installation Really Means

You get consistent temperatures in every room. No more hot spots upstairs or freezing cold zones downstairs that make you constantly adjust the thermostat.

Your energy bills drop because the system is sized correctly for your home. Most contractors guess at sizing, but proper load calculations mean your AC runs efficiently instead of working overtime.

The system actually lasts as long as it’s supposed to. When installation is done right the first time, you’re not dealing with premature breakdowns or calling for repairs every summer.

Hewlett Harbor AC Installation Experts

We Know Long Island HVAC

Excellent Air Conditioning and Heating Service has been handling residential and commercial AC installation throughout Nassau County for years. We understand how Long Island’s coastal humidity affects your cooling needs.

Our technicians are licensed, insured, and trained on the latest HVAC technology. We’re not the cheapest option, and that’s intentional—quality installation costs more upfront but saves you money over time.

We’ve installed everything from central air systems in older Hewlett Harbor homes to ductless mini-splits in modern renovations. Each installation is different, and we treat it that way.

Our AC Installation Process

Here's How We Handle Installation

First, we assess your home’s cooling needs with proper load calculations. This isn’t guesswork—we measure square footage, insulation levels, window placement, and local climate factors to determine the right system size.

Next, we walk you through equipment options that fit your budget and efficiency goals. We explain the differences between standard efficiency and high-efficiency units, ductless versus central air, and what warranties actually cover.

Installation day involves careful removal of old equipment, proper installation of new components, and thorough testing. We protect your floors, clean up completely, and show you how to operate your new system before we leave.

After installation, we provide maintenance recommendations and warranty information. Most manufacturers require professional installation for warranty coverage, which is exactly what you get with us.

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Complete AC Installation Services

What's Included in Every Installation

Every AC installation includes proper system sizing, professional installation of indoor and outdoor units, electrical connections, refrigerant lines, and condensate drainage. We handle permits when required and ensure everything meets local building codes.

You get manufacturer warranties on equipment plus our workmanship guarantee on installation. We also provide operating instructions and maintenance schedules to keep your system running efficiently.

For homes without existing ductwork, we install ductless mini-split systems that provide zoned cooling without major renovations. These work particularly well in Hewlett Harbor’s older homes where adding ductwork isn’t practical.

We also handle central air installation for homes with existing ductwork, including upgrades to electrical systems when needed for higher-efficiency units.

How long does AC installation typically take to complete?

Most residential AC installations take one full day, though some complex jobs require two days. Central air installation in homes with existing ductwork usually takes 6-8 hours. Ductless mini-split installations are often faster, typically 4-6 hours depending on the number of indoor units. If electrical upgrades are needed or we’re working with challenging access areas, we’ll let you know upfront so you can plan accordingly. We always aim to have your system running by the end of the scheduled installation day.

What size AC unit do I need for my home?

AC sizing depends on multiple factors including your home’s square footage, insulation levels, ceiling height, window placement, and local climate conditions. A unit that’s too small won’t cool effectively, while an oversized unit cycles on and off frequently, wasting energy and failing to remove humidity properly. We perform Manual J load calculations to determine the exact cooling capacity your home needs. This engineering-based approach ensures optimal comfort and efficiency, unlike the common practice of simply matching the old unit’s size or using rough square footage estimates.

Do you handle permits and inspections for AC installation?

Yes, we handle all necessary permits for AC installation in Hewlett Harbor and throughout Nassau County. Most installations require electrical and HVAC permits, especially when upgrading electrical service or installing new systems. We’re familiar with local building codes and inspection requirements, so you don’t have to navigate the permit process yourself. The permit costs are included in our installation quotes, and we coordinate with local inspectors to ensure everything passes inspection the first time. This protects you legally and ensures your installation meets all safety standards.

What's the difference between central air and ductless systems?

Central air uses ductwork to distribute cool air throughout your home from a single indoor unit, while ductless systems use individual indoor units mounted in each room or zone. Central air works well when you already have ductwork and want uniform cooling throughout the house. Ductless systems are ideal for homes without existing ducts, room additions, or when you want different temperatures in different areas. Ductless installation is less invasive and often more energy-efficient since there’s no duct loss, but the indoor units are visible on your walls. Both options can provide excellent comfort when properly installed and sized.

How much does professional AC installation cost in Hewlett Harbor?

AC installation costs vary significantly based on system type, size, complexity of installation, and any electrical upgrades needed. Basic central air installation typically ranges from $3,000 to $7,000, while high-efficiency systems or complex installations can cost more. Ductless mini-split systems generally range from $2,500 to $6,000 depending on the number of indoor units. These ranges include equipment, professional installation, permits, and warranties. We provide detailed written estimates that break down all costs, so you know exactly what you’re paying for without surprises.

What warranties come with new AC installation?

New AC systems typically include manufacturer warranties ranging from 5-12 years on major components, with compressors often having the longest coverage. However, these warranties usually require professional installation by licensed technicians to remain valid. We also provide a workmanship warranty on our installation, covering any issues related to our work. Extended warranties are available for additional coverage beyond the standard manufacturer warranty. We’ll explain all warranty terms before installation and provide you with all warranty documentation and registration information to ensure your coverage is properly activated.

Local Resources

Hewlett Harbor, NY is located in Nassau County in New York State