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AfterAC Replacement in Hempstead, NY
AC replacement in Hempstead typically costs between $5,200 and $11,500 for a complete system swap, depending on the unit’s size, efficiency rating, and whether your ductwork needs modification. Most homeowners in Hempstead replace their system when repair costs exceed half the value of the unit, usually around the 12 to 15 year mark. At Dalton Heating & Air Hempstead, every replacement gets a written price before work starts and a full-year guarantee in writing when the job is done, backed by our AC repair installation services.
Call (516) 559-4840 for a free replacement estimate. We’re the team Marco Benitez built around one rule: show up when we say, price the job on paper, and stand behind the install for 365 days. If a repair could still stretch the life of your current unit, we’ll tell you that too. Our AC Repair & Installation in Hempstead page covers the repair side of what we do, but when replacement makes more sense than another patch job, this page walks you through what to expect.
When You Need AC Replacement
Hempstead summers are humid, and a system that limps through July often fails outright in August. Here’s what tells us a replacement beats another repair:
- Your system is 12 years old or more. Even well-maintained units lose efficiency as they age. By year 15, most are running at 60 to 70 percent of their original efficiency, which shows up in your LIPA bill during the cooling season.
- Repair estimates are stacking up. If the compressor or evaporator coil needs replacing, the math is simple: multiply the system’s age by the repair cost. When that number tops $4,000, a new unit usually pays for itself in lower operating costs and fewer service calls.
- R-22 refrigerant is running low. Older systems run on R-22, which was phased out of production and is now expensive to source. If your unit needs an R-22 recharge every spring, you’re paying for a refrigerant that’s only getting harder to find.
- Your cooling bills climb while your comfort drops. Hot and cold spots between rooms, a system that runs constantly, or a house that never quite hits the thermostat setting point to a unit that’s losing capacity.
- You hear the system before you feel it. Compressors that grind, fans that rattle, or a condenser that sounds like it’s working harder than it should are all signs of mechanical wear that indicates the end is near.
We service all nine major residential brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. If you own one of those units and it’s on its last legs, we can quote a direct replacement or upgrade without guessing at compatibility.
Our AC Replacement Process
Replacing a central air system is a full-day job, sometimes two. Here’s how we run it:
- In-home load calculation. We measure the conditioned square footage, window exposure, insulation levels, and ceiling height in your home. This tells us the exact cooling load, measured in BTUs. Guessing at unit size means short-cycling, humidity problems, and higher bills, so we don’t guess.
- Written equipment quote. Before any work begins, you get the price in writing, itemized by equipment, materials, and labor. No number changes at the door. That’s part of The Garrison Standard and it’s not negotiable.
- System removal and site prep. We disconnect and remove the old equipment, inspect the line set and pad, and clean the work area before the new unit goes in. If the existing ductwork can be reused, we test it for leaks and seal what needs sealing.
- Installation and setup. The new system gets installed, brazed, charged with the correct refrigerant, and wired to code. We install equipment from brands like Rheem, York, Daikin, and Bryant, matched to your home’s load and your budget.
- System startup and verification. We run the system through a full startup sequence, measure the temperature split across the coil, verify refrigerant pressures, and check airflow. If it doesn’t hit spec, we don’t leave until it does.
- You inspect the job. We walk the site with you, explain what we installed, and hand you the written warranty and the number to call. The site is clean before we pull out of the driveway. That’s The Garrison Code.
AC Replacement Pricing in Hempstead
Here’s what we see across Hempstead homes in 2026:
| Replacement Type | Typical Range | Notes |
|---|---|---|
| Basic 13 – 14 SEER system, 1.5 – 2.5 ton | $5,200 – $7,800 | Direct swap, existing ductwork in usable shape |
| Mid-efficiency 15 – 16 SEER system, 2 – 3.5 ton | $7,500 – $9,800 | Most common choice for Hempstead homes; includes new pad, line set, and smart thermostat in many cases |
| High-efficiency 17 – 20+ SEER system, 3 – 5 ton | $9,800 – $14,000 | Two-stage or variable-speed compressor; qualifies for utility rebates in many cases |
| Full system with ductwork replacement | Add $3,000 – $6,500 | Needed when ducts are leaking, undersized, or damaged |
Your actual price depends on the size of your home, the condition of the ductwork, the efficiency level you want, and whether the electrical panel needs an upgrade to support the new equipment. Older homes near Hofstra or in the neighborhoods off Front Street often need an electrical update, which adds cost but is a one-time fix that protects the new system.
Every quote is free, it’s written, and it doesn’t expire in 48 hours. Call (516) 559-4840 and we’ll schedule a walkthrough at a time that works for you.
FAQs – AC Replacement
How much does AC replacement cost in Hempstead?
Most complete AC replacements in Hempstead run between $5,200 and $11,500, with mid-efficiency systems landing around $7,500 to $9,800. The biggest variables are system size, SEER efficiency rating, ductwork condition, and whether electrical upgrades are required. Call (516) 559-4840 for a written estimate, free of charge.
Is it cheaper to repair or replace my AC?
When the repair cost multiplied by the system’s age in years exceeds $4,000, replacement is usually the smarter spend. A Compressor Repair or coil replacement on a 14-year-old unit often costs more than half the price of a new system, and you still have an old unit that’s losing efficiency. If the math is borderline, we’ll tell you so.
Can you replace my AC the same day?
No, not responsibly. A proper replacement requires a load calculation, equipment pull, and a full-day install. We don’t rush a full system swap into a same-day window because doing so would mean skipping steps that protect the equipment and your warranty. Same-day is for repairs. Replacement typically takes 2 to 5 business days from estimate to completion, depending on equipment availability.
What brand should I choose for my new AC?
The brand matters less than the install quality. A mid-tier Rheem or York installed correctly will outperform a premium-brand system cut into bad ductwork. We install Rheem, York, Daikin, Bryant, and the other major brands, and we’ll recommend the best match for your budget and the cooling load of your Hempstead home.
Do you handle the old unit and permits?
Yes. We remove the old equipment, perform a proper Refrigerant Recharge recovery per EPA requirements, and haul everything off-site. For Hempstead work, we pull any required mechanical permits and schedule the inspection. You get the sign-off, not the paperwork headache.
Written by Marco Benitez, Owner at Dalton Heating & Air Hempstead, serving Hempstead.