HVAC system replacement takes a large budget investment, though knowing what factors into it makes a better-informed budget decision. You might be installing a new 2 ton air conditioner or you might be upgrading to a 5 ton HVAC system, this guide will take you through HVAC cost, what to expect during installation and how to get the most value.
1. Understanding HVAC System Tonnage and Cost
The HVAC systems are rated in tons, which is an indicator of the cooling capacity. The most popular size is 2-ton, 3-ton, 3.5 ton, 4 and 5 ton units. The cost, furthermore, goes up with the tonnage; not only the unit cost but the installation cost too.
Case in point, the prices of buying a 4-ton AC unit vary between 5,500 to 9,000 dollars. This is totally depending on the brand and seer power as well as where you live. The cost of a 5-ton AC unit may be over 10,000 dollars, in case there exists a necessity to conduct ductwork or electrical upgrades.
2. HVAC Unit Cost Breakdown by Size
| Tonnage | Estimated Unit Cost | Installed Cost |
| 2 Ton | $3,200 – $4,500 | $4,000 – $6,000 |
| 3 Ton | $3,500 – $5,500 | $5,000 – $7,500 |
| 3.5 Ton | $3,800 – $5,800 | $5,500 – $8,000 |
| 4 Ton | $4,000 – $6,200 | $6,000 – $9,000 |
| 5 Ton | $4,500 – $6,800 | $7,000 –$11,000 |
The specific HVAC system you purchase determines your price, but in general the energy efficiency of non-abuse systems, including air conditioning and furnace, the brand name (American Standard, Goodman), and type of system cost less now than ever before.
3. Cost to Replace 3 Ton AC Unit and Furnace
An installed 3-ton AC unit with gas furnace will set you back by about 6000-9000 dollars. It involves the taking out of your old HVAC box and the installation of a new air handler coupled with electrical updates in case of need.
Your cost might go up a little bit, depending on what energy-efficient models you might be considering, with long term savings on the Energy Star appliances. Brands such as American Standard 3-ton AC should expect a heavy price because they are performance and durable.
4. Cost to Replace a 4 Ton AC System
A 4 ton air conditioner has a replacement cost which is between 6000 and 9500 dollars. These are, new condenser, air handler, refrigerant lines and thermostat upgrading.
Remember that you could have to pay more or less depending on the installation of a heat pump, the type of system you choose ( split or packaged) or ductwork requires adjustment. Some brand systems may be costly as compared to a Goodman 3.5-ton package unit.
5. Cost of a 5 Ton AC Replacement
In bigger houses, there can be a 5-ton AC unit. The price of a 5-ton air Conditioner might go as low as 7,000 dollars to 11,000 dollars inclusive of installation. When picking an AC package system with 5 tons, you might reduce the cost of labor but you might lose flexibility with placement of it.
The price may also surge due to high efficiency models and other attic work (such as the attic furnace replacement). The end result is, however, usually worth the expense in the long run in terms of comfort and reduced utility bills.
6. 2 to 3.5 Ton Systems: Budget-Friendly Solutions
Smaller houses would then only need 2.5 ton air conditioner or even 2 ton air conditioner. They are the least expensive and cost between 4000 and 6500 dollars to install.
It may be the cheapest 2.5-ton air handler replacement you ever have or simply, you may be seeking the air conditioning cost of a 3 ton air conditioner, but rest assured not only is the air conditioner with higher SEER rating cheaper than replacing the current system; it may bring down those monthly utility bills and enable you to get a rebate..
7. Commercial HVAC Costs Per Square Foot
Bigger systems with more power are in use in commercial buildings. HVAC cost per square foot of a commercial property depends on the size of the owned property, the kind of HVAC system installed in the building as well as the complexity of zoning.
The prices are averagely between 15 and 30 dollars per square foot. The rooftop units or multi-zone commercial installs may add much to cost. We suggest that a square foot estimate and cooling demand should be obtained.
8. HVAC Installation in Manhattan, NY: What to Expect
In Manhattan, Brooklyn, Queens, NY GN Mechanical Services offers affordable pricing disclosure, reliable installations in a short time, and skilled HVAC professionals. We deal with both new and old units in residential systems and in commercial systems with replacements of full systems and new 3 to 5-ton AC units.
Frequently Asked Questions
1. How do I know what tonnage my home needs?
Tonnage depends on your home’s square footage, insulation, climate zone, and layout. A general rule is 1 ton of cooling for every 500–600 square feet. A professional load calculation by an HVAC technician is the most accurate way to determine this.
2. What is included in HVAC system replacement costs?
Typical replacement costs include the new unit, removal of the old system, installation, refrigerant lines, electrical upgrades, thermostat (if needed), and any ductwork adjustments.
3. Is it cheaper to replace an AC unit and furnace together?
Yes. Replacing both at the same time often reduces labor costs and ensures system compatibility. Many installers offer combo discounts for installing a matched system.
4. How long does it take to install a new HVAC system?
Most residential HVAC replacements take 1 to 3 days, depending on complexity, size of the unit, and whether ductwork or electrical changes are needed.
5. Why do costs vary so much by location?
Labor rates, permitting fees, climate needs, and even brand availability vary by region. For example, installation in Manhattan, NY typically costs more than in rural areas due to higher labor costs and space constraints.
Final Thoughts: What Should a New AC Unit Cost?
Depending on a variety of factors a new air conditioner is installed at different costs, they are: tonnage, brand, efficiency, integration with furnace and size of the home. When you want to know how much does the 3.5 ton AC cost installed or even, what should the 5-ton AC cost, you are likely to spend anywhere between 4000 dollars to over 11000 dollars.
A-local and reliable HVAC installer such as GN Mechanical Services will give you proper quotes, licensed installation, and rest of mind.
