Furnace Service, Repair, & Installation

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Keep Comfortable with A Lennox Furnace

We make owning a new furnace easy in terms of affordability and maintenance. We have many discounts, specials and rebates that are offered to all of our customers. The benefits with our furnace installations are so numerous that you will be counting them for months to come.

When your new furnace arrives, our friendly technicians will install it with their skilled techniques right in your home. Surrounding areas will not be disturbed and the job site will be thoroughly cleaned afterward. We respect your home as if it was our own and take every job very seriously.

Central Air Systems furnace installation!

As one of the best companies for furnace installation in Suffolk County, we strive for customer satisfaction. We understand manufacturer's warranties do not cover certain items like duct work repairs, labor, and other equipment costs, which is why we help by offering maintenance agreements.

Lennox furnace installed by Central Air Systems

Lennox Furnaces

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Lennox Furnaces


Lennox furnaces are some of the most efficient and quietest heating systems on the market. They’re engineered for perfect warmth and savings.


Lennox SLP 98
Variable-Capacity Gas Furnace

Precise Comfort® technology allows the SLP98V to keep the temperature held exactly where you want it. Heat is even throughout your home, with no cold spots. If it sounds perfect, it’s because it is.


Lennox EL296V
Variable-Speed, Two-Stage Gas Furnace

The EL296V can adjust its airflow speed, allowing it to gently disperse even heat throughout your home. Variable-speed airflow also prevents blasts of air when the system starts.


Feature Specifications
Energy Efficiency 96%
ENERGY STAR® Qualified
Stages of Heating Two-Stage
Quiet Operation SilentComfort™ Technology and Sound Absorbing Insulation
Motor Variable Speed
Enhanced Humiduty Control
Blower Compartment Insulated
Air Filter and Humidifer Compatible
Ultra-Low Continuous Fan
Ignition SureLight® Silicon Nitride Ignitor
Parts Warranty 5-Year Limited Warranty on covered components
Heat Exchanger Warranty Limited Lifetime Warranty

Lennox SL280V
Variable-Speed, Two-Stage Gas Furnace

While most furnaces are either off or on, the SL280V can actually deliver two different levels of heat based on how cold it is outside. This lets it fine-tune fuel use to carefully match your comfort, keeping your home warm and energy-smart.


Feature Specifications
Energy Efficiency 80% AFUE
Stages of Heating Two-Stage
Quiet Operation SilentComfort™ Technology and Sound Absorbing Insulation
Motor Variable Speed
Enhanced Humiduty Control
Blower Compartment Insulated
Air Filter and Humidifer Compatible
Ultra-Low Continuous Fan
Ignition SureLight® Silicon Nitride Ignitor
Parts Warranty 10-Year Limited Warranty on covered components
Heat Exchanger Warranty 20-Year Limited Warranty

Stay warm all winter with a high efficiency Lennox furnace! Central Air Systems is your local heating system expert, call us today to get yours!

Furnace Inspection Checklist

  • Check flue system for safety & carbon monoxide leaks
  • Check return & air filter
  • Lubricate motors and bearing as necessary
  • Check all parts for visible wear & tear
  • Check gas train and all electrical components / connections for safety
  • Test thermostat operation
  • Clean and check heat pump assembly if necessary
  • Check proper burner ignition and efficiency
  • Confirm complete system operation and safety

Furnace Cleaning

Is your furnace not producing enough heat? Are your gas bills extremely high? Is your furnace failing to keep up with the harsh winters? If you answered yes then you could use a tune-up. We perform annual service that has many benefits for your furnace. Call us today for your estimate!

 Does your furnace need cleaning or service? Call Central Air Systems today for any furnace service you need!

Why Get A New Furnace

Once the furnace install is finished, we will help you maintain it so that it lasts as long as possible. You can trust our service professionals to keep your furnace working better and longer.

Central Air Systems is your local furnace specialist! We know how to bring your existing furnace back up to speed or install a new high efficiency model to keep you comfortable with more savings!

Our Furnace sales staff can design the most efficient and comfortable heating system to meet your budget, desires, and lifestyles. We take the structural requirements for your home into consideration with all of our recommendations. When choosing a new furnace, considerations should include respiratory issues and allergies. Talk to our experts about all your concerns and we will guide you through the decision making process.

Our experts will do all they can to make owning a furnace easy. Numerous affordable options will be available to you. The greatest part about our installation service is our speed and efficiency. So no matter what time you need us to work, we will ensure the job is done in the best possible manner.

Furnace Repair

Before the cold winter months in Long Island are upon us, it's a good time to get your furnace inspected or repaired by one of Central Air Systems's professional repair technicians. Central Air Systems has established itself as the premier furnace repair specialist of the greater Suffolk County area, and you can take advantage of our affordable furnace repair services around the clock!