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3.5 Ton AC Unit Price Guide (by a real AC Company)

The 3.5 Ton AC Unit Price is on average $4,343.42 to $4,380.33

3.5 Ton AC Unit Price Guide

Complete 3.5-Ton AC Unit price guide
  • 3.5 Ton Outdoor AC Unit Price – $4,343.42 to $4,380.33
  • 3.5 Ton Indoor Furnace Cost – $3,999.67 to $4,438.86
  • 3.5 Ton HVAC System Cost – $8,343.09 to $8,819.19

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3.5 Ton AC Unit Price Breakout

The breakout of the 3.5-ton AC unit price is separated into equipment and labor costs. The equipment costs vary depending on factors such as type and efficiency. High-efficiency units with advanced features may come with a higher price tag. Additionally, the labor costs account for the expertise required for installation. Certain equipment might demand specialized knowledge or safety measures, increasing labor intensity. Installation of complex systems like ductwork or the integration of existing infrastructure can also contribute to higher labor and equipment costs. The breakout into equipment and labor allows for a transparent assessment of expenses related to both equipment quality and skilled labor.

3.5 Ton AC UnitEquipmentLaborTotal
Remove Old Outdoor AC Unit-$400.00$400.00
Set New Outdoor AC Unit$3,743.42$600.00$4,343.42
Reconnect Plenum, Line Set, & Drain$241.73$500.00$741.73
Install New, Filter Drier, Safety Switch, Locking Cap, & Thermostat$535.98$400.00$935.98
Calibrate & Commission System$221.81$300.00$521.81

What needs to be included in new HVAC installation

  • Pump Down The Unit
  • Remove Indoor Furnace & Outdoor AC Unit
  • Acid Flushing Line Set
  • Replace Disconnect & Whip (If Needed)
  • Install Max Circuit Protection Fuses (If Needed)
  • Install New Indoor Furnace & Outdoor AC Unit
  • Reconnect And Seal Plenum
  • Reconnect Line Set
  • Reconnect Drain Line
  • Install New Filter Drier
  • Install Safety Switch
  • Install Locking Caps
  • Install New Thermostat
  • Calibrate The System
  • Commission The System
  • Complete City Permit & City Inspection (If Needed)
  • Includes 10-year parts warranty & 2 year labor warranty
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Note: The installation process is critical to the long-term health and performance of the HVAC. If one of these steps is missed, it can significantly reduce the system’s useful life.

Price of 3.5 Ton AC Unit By Seer

As the SEER rating rises, so does the price of a 3.5 ton AC unit. SEER ratings indicate the efficiency of an air conditioner, with higher numbers representing greater efficiency and lower operating costs. Due to their higher technology and efficiency, units with higher SEER ratings typically come with a higher initial cost. However, this upfront investment often pays off over time through reduced energy bills. You should balance the initial price of the 3.5 ton AC unit against its long-term energy savings to make an informed decision about which SEER rating best suits your needs and budget.

AC Unit Cost
15.2 Seer2$4,380.33
16 Seer2$7,302.98
18 Seer2$8,800.52
21.5 Seer2$11,018.31

14.3 SEER Single Stage

The 14.3 SEER single-stage AC unit is the fundamental, budget-grade option in the market. With a moderate SEER rating, it offers a basic level of energy efficiency suitable for those prioritizing upfront affordability over long-term savings. As the base model, it provides essential cooling functionality without the added features or advanced technology of higher-tier units. While it may lack some bells and whistles, it remains a reliable choice for individuals seeking a cost-effective cooling solution. Its affordability makes it accessible to a wide range of consumers, particularly those with budget constraints or simpler cooling needs.

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16 SEER Two Stage

The 16 SEER two-stage AC unit represents a mid-tier option, balancing between efficiency and upfront affordability. With a higher SEER rating than base models, it offers improved energy efficiency, leading to potential long-term cost savings on energy bills. The two-stage compressor allows for a little more temperature control and better humidity management, enhancing comfort levels within the home. While it may come with a slightly higher initial investment compared to base models, its increased efficiency and performance can justify the cost for many consumers. This mid-tier model is for those seeking a reliable AC unit that offers a good balance of efficiency and affordability.

18 SEER Five Speed

The 18 SEER five-stage AC unit stands out as one of the top-tier models, really focusing on efficiency. With an impressive SEER rating, it represents industry technology designed to minimize energy consumption while maximizing cooling performance. The five-stage compressor allows for precise control and gradual adjustments to match the exact cooling needs of the space, optimizing energy usage throughout the day. While it may come with a higher initial investment, the significant energy savings over time can make it a compelling choice for those prioritizing efficiency and environmental sustainability. This top-tier model sets the standard for premium cooling solutions, delivering incredible performance and efficiency.

22 SEER Variable Speed

The 22 SEER variable-stage compressor is the best of the best for efficiency in AC technology. Its ability to make incremental adjustments to match the precise cooling demands of a space sets it apart as one of the most efficient options available. This sophisticated system continuously monitors and adapts to changing conditions, optimizing energy usage while maintaining optimal comfort levels. The variable-stage compressor guarantees that the unit operates at the most efficient capacity at all times, resulting in substantial energy savings over the long term. While it may have a higher upfront cost, its efficiency makes it a top choice for those seeking the best in cooling performance and environmental responsibility.

3.5 Ton AC Unit Warranty

Investing in a higher quality 3.5 ton AC unit inevitably comes with a higher price tag, but it can prove worthwhile in the long run. These premium systems typically come with advanced features, better energy efficiency, and enhanced durability, giving you greater comfort and lower energy bills over time. However, given the substantial initial investment, it’s often important to protect that investment with a comprehensive warranty. A warranty provides added peace of mind, protecting against unexpected repairs or malfunctions that could otherwise be additional costs. Considering the significant 3.5 ton AC unit price, choosing a warranty is a smart strategy to protect your investment and guarantee an issue-free operation.

Warranty TypeCost
5-Year Parts WarrantyIncluded
5-Year In Addition With Factory RegistrationRegister At Install
10-Year Total On PartsWith Registration
1-Year Labor WarrantyIncluded
3-Year Extended Labor Warranty$ 569.38
5-Year Extended Labor Warranty$ 1,027.95
10-Year Extended Labor Warranty$1,964.76


Keeping detailed paperwork is very important when you have a warranty, ensuring a smooth and stress-free process when servicing your system. Your warranty documentation serves as proof of purchase and outlines the terms and conditions of coverage. Without it, you may encounter difficulties or delays in accessing warranty benefits. Also as important, maintaining records of any maintenance or repairs performed on your system can further facilitate the claims process, demonstrating that you’ve upheld your end of the warranty agreement. Additionally, some manufacturers offer extended warranties as incentives, such as extending the standard 5-year factory warranty to 10 years. We will register your system for you so you not only benefit from an extended coverage period but also streamline the warranty process. Ultimately, record-keeping and taking advantage of warranty extensions can provide added security and peace of mind, ensuring that your AC unit remains protected for several years to come.

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Warranty Options

Our standard labor warranty offers peace of mind for 2 years, but we understand the value of comprehensive coverage. That’s why we provide the option to extend your labor warranty to either 5 years or 10 years. This extended coverage is our most comprehensive option, ensuring that both parts and labor for your AC unit are fully protected. By choosing this plan, you’re investing in long-term security for your AC unit, protecting  yourself from unexpected repair costs and guaranteeing continued comfort in your home or business. Whether it’s minor adjustments or major repairs, our extended labor warranty means you can rest easy knowing that any issues will be promptly addressed. With our commitment to customer satisfaction and reliable service, you can trust that your AC investment is in good hands for years to come.

3.5 Ton AC UnitDecibel Levels (dB)

When you are planning for a new AC unit, it’s important to note that noise levels vary significantly. Single-stage systems tend to be the loudest, emitting noticeable sound during operation. Two-stage systems do offer a slight improvement in noise reduction. However, for those prioritizing quiet operation, variable speed systems are the optimal choice. These units adjust their speed to precisely match the cooling needs, resulting in whisper-quiet performance during normal operation. While variable speed systems may come at a premium in the 3.5 ton air conditioner price range, their ability to add an additional level of comfort to an indoor environment makes them a worthwhile investment for those seeking the best comfort.

System TypedBEquivalent
Single Stage78Noisy Restaurant
Two Stage72Vacuum Cleaner
Variable Speed53Quiet Office


A single-stage unit stands out as the most economical option in the 3.5 ton AC price range, but it’s also the loudest type of system. These systems operate on a simple on/off mechanism, running at full capacity whenever activated. While this simplicity keeps costs down, it also means that the unit operates at maximum output whenever it’s running, leading to louder operation compared to more advanced models. Essentially, single-stage units lack the ability to adjust their output based on changing conditions, resulting in consistent noise levels regardless of the conditions. Despite being the noisiest choice, single-stage units remain popular for their affordability, making them an accessible option for budget-conscious consumers.

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Middle Ground

A two-stage AC unit offers a slight improvement in noise reduction compared to single-stage models, making it a more appealing option for those seeking a quieter cooling solution within the same price range of a 3.5-ton two-stage AC unit. With dual-stage operation, this system can adjust its output to match the cooling demands a little more accurately. During milder weather or when less cooling is needed, the unit operates at a lower capacity, resulting in quieter operation. It’s only when temperatures rise or there’s a higher demand for cooling that the unit ramps up to its full capacity. This staged approach not only enhances efficiency but also reduces noise levels, providing a more peaceful indoor environment. While two-stage units may come at a slightly higher initial cost than single-stage models, their quieter operation and improved efficiency might make them a worthwhile investment for many homeowners seeking comfort without compromising on noise levels.


Investing in a variable speed AC unit offers the top of the line in quiet cooling. These systems are the best in minimizing noise levels thanks to their innovative technology, which allows for incremental adjustments to indoor conditions. Unlike single-stage or two-stage units, variable speed units rarely operate at full capacity. Instead, they change their output to precisely match the cooling needs of the space. By operating at lower speeds more frequently, these units maintain consistent comfort levels while significantly reducing noise levels. The ability to fine-tune performance based on real-time conditions ensures that the unit operates very efficiently and quietly, creating a more serene indoor environment. While variable speed units may come with a higher initial investment, their whisper-quiet noise levels and exceptional energy efficiency make them a standout choice for homeowners seeking the best in comfort.

3.5 Ton Environmental Friendly AC Unit

New AC units have advanced technology that makes them more environmentally friendly than ever before. These units use innovative features such as variable-speed compressors, high-efficiency components, and environmentally friendly refrigerants to reduce energy consumption and minimize their carbon footprint. Additionally, improved insulation and sealing techniques enhance overall efficiency, further decreasing environmental impact. By investing in a modern AC unit, you not only enjoy better comfort but also contribute to sustainability efforts by reducing energy usage and greenhouse gas emissions, aligning with the global push for eco-friendly practices in AC units.

Heat Pumps

Heat pumps offer benefits for both the environment and your wallet, often in the form of government tax credits. These systems efficiently transfer heat between indoor and outdoor air, providing both heating and cooling with minimal energy consumption. By harnessing energy from the air or ground, heat pumps significantly reduce reliance on fossil fuels, slashing carbon emissions and mitigating environmental impact. Their high efficiency also translates to lower energy bills over time, offering substantial savings for homeowners. Additionally, the government is incentivizing the adoption of heat pump technology through tax credits and rebates, which further offset initial costs and make them an attractive investment. By leveraging these incentives, you can not only enjoy enhanced comfort and lower utility bills but also contribute to a more sustainable future by reducing greenhouse gas emissions. Heat pumps come out as a win-win solution for both environmental sustainability and financial savings.


SEER2, or the Second Generation Seasonal Energy Efficiency Ratio, represents an advancement in the efficiency ratings of AC units. This updated metric takes into account real-world operating conditions and seasonal variations, providing a more accurate reflection of a unit’s energy performance over time. SEER2 offers a more comprehensive assessment of energy usage, enabling you to make informed decisions when selecting your cooling systems. With SEER2, manufacturers are incentivized to develop more energy-efficient technologies, driving innovation in the AC industry and ultimately reducing energy consumption and environmental impact. You can benefit from lower utility bills and enhanced comfort, while society as a whole enjoys reduced strain on energy resources and decreased greenhouse gas emissions. SEER2 marks a significant step forward in the quest for more sustainable cooling solutions, focusing on the importance of efficiency in combating climate change and promoting energy conservation.


Advancements in refrigerant technology have led to the development of new alternatives that are significantly less harmful to the environment than traditional Freon. These modern refrigerants, such as hydrofluoroolefins and hydrocarbons, have lower global warming potential and ozone depletion potential compared to their predecessors. By transitioning to these eco-friendly alternatives, AC units can drastically reduce their environmental impact, mitigating the depletion of the ozone layer and slowing the pace of climate change. Additionally, these new refrigerants boast improved efficiency, enhancing the performance of AC units while reducing energy consumption and operating costs. The adoption of these environmentally friendly refrigerants represents a very important step towards sustainability in the AC industry, aligning with global efforts to combat climate change and preserve the planet for future generations. As regulations increasingly restrict the use of harmful refrigerants, the transition to these safer alternatives becomes not only beneficial but imperative for both environmental and human health.


How much should a 3.5 ton AC unit cost?

The cost of a 3.5 ton AC unit can vary depending on factors like brand, efficiency rating, and installation requirements. On average, you might expect to pay between $3,000 to $7,000 for the unit alone. However, installation costs can significantly impact the total expense, ranging from $1,500 to $5,000, depending on complexity and location. Additionally, higher efficiency models may have a higher upfront cost but can lead to lower energy bills over time. It’s essential to consider both the initial investment and long-term savings when purchasing an AC unit.

How many square feet will a 3.5 ton AC unit cool?

A 3.5 ton AC unit is typically suitable for cooling spaces ranging from 1,600 to 2,300 square feet. However, several factors can influence this estimate, including climate, insulation, ceiling height, and the number of windows. In moderate climates, a 3.5 ton unit may cool a larger area effectively, while in hotter climates or poorly insulated spaces, its coverage may be closer to the lower end of the range.

How long should a 3.5 ton AC unit last?

A well-maintained 3.5 ton AC unit typically lasts between 10 to 15 years. Regular maintenance, such as annual servicing, filter replacement, and keeping the outdoor unit clean, can help extend its lifespan. Factors like usage frequency, climate conditions, and installation quality also play a role in determining longevity. As the unit ages, efficiency may decrease, and repair costs may rise. It’s advisable to monitor its performance and consider upgrading to a newer, more efficient model if repairs become frequent or energy bills rise significantly.

Can an AC be too big for a house?

Yes, an AC unit can be too big for a house. Oversized units can lead to several issues, including:

1. Short cycling: An oversized unit cools the space quickly, causing it to shut off before adequately dehumidifying the air. This leads to frequent on-off cycling, which can increase wear and tear on the system and reduce efficiency.
2. Uneven cooling: Oversized units may not run long enough to evenly distribute cool air throughout the house, leading to hot and cold spots.
3. Higher energy bills: Despite the misconception that bigger is always better, oversized units consume more energy than necessary to cool the space, resulting in higher utility bills.
4. Increased humidity: Insufficient dehumidification can leave the indoor air feeling clammy and uncomfortable.

It’s essential to properly size the AC unit based on the house’s square footage, insulation, climate, and other factors to ensure optimal performance and efficiency.

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