Central air conditioning systems cool your home by using a network of ducts to distribute cool air from a central unit, typically located outside. The system pulls warm air from your home, cools it using refrigerant, and then circulates the cool air back through your ductwork.
Central Air Conditioning
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For most of us these days, Central Air Conditioning is a given for any household. It is expected that any home built since the 1960s would have a central air unit of some sort in use as their home HVAC system. As these systems age, they are replaced with the same furnace and air conditioning packages as before. This also applies to new home construction and retrofitting older homes that do not have central AC. For these jobs, HVACDirect.com is your essential supplier for everything you need.
We carry three brands that represent what we feel is the best value out there for homeowners:
- ACiQ - Manufactured by one of the largest HVAC brands in the world, ACiQ is known for its superior comfortability and affordability.
- Goodman - a blue-collar champion that amazes the industry with its performance, popularity, and dependability.
- Style Crest - a leader of quality mobile home and manufactured home AC packaged systems and parent of the well-known brand Revolv.
Installing a central air conditioning system is a major undertaking, but it doesn’t need to be an overwhelming one. We have systems and components categorized into groups that make it easier to compare brands, to match systems to the need, and match components to each other.
Furnace and Air Conditioning Systems
The most common type of AC system for regions where the seasons run their course without extremes is a Furnace and Air Conditioning System. It combines an air conditioner condenser unit, where refrigerant is compressed and circulated, a furnace, where air is heated by electricity or gas burners, and an air handler, which forces the hot/cold air to the vents and ductwork.
These units are highly efficient, with AFUE ratings (furnace efficiency) of 80% to 98% and SEER/SEER2 ratings (AC efficiency) up to 20 (SEER) and 18 (SEER2). That will save you money on energy costs, regardless of the season. Choose from units ranging from 40,000 BTUs to 120,000 BTUs (furnaces) and from 1.5 ton to 5 ton (AC).
Air Conditioner Split Systems
A Split System Air Conditioner is called that because the major components are split between an outdoor unit (the compressor/condenser) and an indoor unit (evaporator coil/air handler), creating a full AC Split System.
An optional part of the indoor component is an electric heat strip, which on our models range from 3 kilowatts to 25 kilowatts. The heat strips are less energy efficient than the cooling system and are best suited for climates where the winters are not brutally cold or particularly long-lasting.
Air Conditioner and Coil Systems
Air Conditioner and Coil Systems are cooling-only systems designed for use where an air handler is already on the job. They include a condenser (outside) and an evaporator coil (inside). The evaporator coil must be housed in a cabinet (supplied on some models) and connected to the air handler, which moves the air coming off the coils and distributes it to the house via the duct system.
These carefully matched systems are designed to provide the ultimate comfort with minimum energy use. And “matched” doesn’t mean the condenser and coils have the same capacity. The coil should have a slightly greater capacity for the best heat transfer and efficiency.
Packaged Air Conditioners
Packaged Air Conditioners are great for applications where outdoor space is limited. They include all components in one heavy duty steel cabinet that rests outside on a slab, landing, or roof. These are extremely popular for light business applications as well as mobile or manufactured homes.
Individual Components
If you have a reliable, fairly new portion of an AC system already in place, you won’t need a complete set. You can order condensers, air handlers, coils, and furnace separately. Take advantage of our highly-trained and extremely helpful customer service team for the ultimate in information, advice, and assistance with your order.
Frequently Asked Questions
The size of your central air conditioner depends on your home’s square footage, insulation, and climate. A professional HVAC contractor can perform a load calculation to determine the appropriate unit size. For homeowners, it's recommended to consult with HVAC professionals or use our HVAC System Sizing Guide to ensure you select the right furnace size for your specific needs and home characteristics.
Costs vary depending on the brand, unit size, efficiency rating, and installation complexity. Basic systems can start around $2,000, while high-efficiency units with installation can exceed $10,000..
SEER (Seasonal Energy Efficiency Ratio) measures a unit’s cooling efficiency. Higher SEER ratings indicate greater efficiency, which can lower your energy bills and environmental impact.
With proper maintenance, a central air conditioner can last 10–15 years. Regular tune-ups and filter changes can extend the lifespan of your system.
Yes! High-efficiency units can significantly reduce your energy bills and often qualify for tax credits or rebates, making them a smart long-term investment.
Installing a central air conditioner requires professional expertise, tools, and knowledge of local codes. Improper installation can lead to inefficiency, breakdowns, and voided warranties.
Annual maintenance is recommended to keep your system running efficiently. A professional technician will inspect, clean, and tune up the system to prevent costly repairs.
A split-system has an outdoor condenser unit and an indoor air handler, while a packaged system combines all components into a single outdoor unit. Split-systems are more common in residential settings.
Yes! When paired with the right filters or air purifiers, central AC systems can help reduce dust, pollen, and other allergens, improving the air quality in your home.
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