Lennox Five Ton Gas Package Unit Price and Installation Cost

A Lennox five-ton gas package unit provides a self-contained heating and cooling solution in a single outdoor cabinet, ideal for mid-to-large homes with centralized ductwork. Price and installation costs vary with model features, efficiency, and the home’s existing HVAC setup. This guide outlines typical equipment costs, installation ranges, and factors that affect total expense, plus rebates and financing options. Understanding these elements helps homeowners compare bids, plan for permits, and ensure reliable performance for years to come.

Overview

A five-ton gas package unit combines a natural gas furnace and an air conditioner in one weatherproof outdoor cabinet. The five-ton rating corresponds to about 60,000 BTU per hour of cooling capacity, making it suitable for larger homes where ductwork is centralized. Efficiency is expressed through AFUE for the heating portion and SEER for cooling. Lennox offers multiple efficiency levels and features, such as multi-speed blowers and, in some models, two-stage gas valves. When sizing and selecting a unit, contractors consider climate, insulation, windows, and current duct performance to balance comfort and operating costs.

Because the unit is installed outside and connects to interior components, proper installation is essential. A correct match to the home, correct refrigerant charge, and proper venting and gas line connections influence reliability and efficiency. Costs are impacted by the specific model chosen, regional labor rates, and whether the existing ductwork can accommodate a packaged unit without substantial modification.

Price Of The Unit

The equipment price for a Lennox five-ton gas package unit typically ranges from about $4,500 to $9,000, depending on efficiency, features, and model. High-efficiency configurations with AFUE in the mid-to-high 90s and SEER in the mid-to-upper range can push equipment costs toward the upper end, roughly $8,000 to $11,000. Reading the technical specifications on the exact model and confirming installation compatibility are essential before selecting a unit.

• Standard efficiency (approximately 80–85% AFUE): $4,500–$6,500
• Mid-range efficiency (about 90% AFUE): $6,000–$8,000
• High-efficiency models (95–96% AFUE): $8,000–$11,000

Prices can vary by retailer, regional availability, and whether the unit includes any premium features or a bundled warranty. Always confirm whether installation is included in price quotes or if it will be billed separately.

Installation Cost

Installation costs cover labor, permits, ductwork connections, venting, gas line work, electrical connections, refrigerant charge, and commissioning. The total installed price depends heavily on the existing HVAC system and the complexity of the job. When ductwork is already compatible with a packaged unit, installation tends to be less expensive than when extensive duct modifications are required.

• With existing, compatible ductwork: roughly $2,800–$4,800 for installation
• With ductwork modifications or additions: roughly $4,000–$7,500
• Gas line upgrades or re-routing needed: $500–$1,500
• Permits and inspections (varies by locality): $100–$300

In most cases, homeowners should expect a total installed cost ranging from about $7,300 to $13,500, depending on the factors above and regional labor rates. Some projects, particularly in colder climates or historic homes, may exceed this range.

Cost Factors That Influence Price

• Efficiency and features: Higher AFUE and SEER ratings increase equipment cost but can reduce long-term energy bills.
• Ductwork condition: Existing ducts in good condition support a smoother installation and lower labor time.
• Gas line and venting requirements: Longer gas runs or specialized venting add material and labor costs.
• Electrical and thermostat integration: Smart thermostats and advanced controls may add upfront costs.
• Permits and local codes: Some jurisdictions require more extensive permitting, impacting total price.
• Labor rates by region: Urban or high-cost areas tend to have higher installation costs.
• Rebates and incentives: Utility programs and federal or state incentives can affect the overall value after rebates.
• Duct design needs: Poor existing duct design may require redesign or balancing to achieve optimal performance.

Key point: While higher efficiency increases upfront costs, promoting better comfort and energy savings over time can improve payback periods in many homes.

Warranties, Maintenance, And Longevity

Warranty terms vary by model, installer, and regional programs. Most Lennox gas package units provide a parts warranty that generally ranges from five to ten years, with some components or extended plans offering longer coverage. Labor coverage is less uniformly included and may require a separate warranty or extended contract. Regular maintenance is essential to preserve performance and reliability.

• Maintenance recommendations: Schedule a professional tune-up annually, inspect the burner flame, check refrigerant levels, clean coils, and replace filters regularly.
• Expected lifespan: With routine service, a Lennox five-ton gas package unit can last 12–20 years, depending on usage, climate, and maintenance.

Homeowners should verify exact warranty details with the installer and the model manufacturer, and consider extended warranties or maintenance plans to maximize long-term value.

Financing And Rebates

Financing options are commonly available through installers or third-party lenders. Many utility providers and state programs offer rebates or incentives for energy-efficient HVAC equipment, particularly for high-efficiency models. Availability and amounts vary by region, program design, and current funding. It is advisable to review incentives through official resources such as ENERGY STAR, the Database of State Incentives for Renewables & Efficiency (DSIRE), and local utility websites, and to discuss eligible rebates with the installing contractor before purchase.

Smart budgeting can include factoring potential incentives into the total installed cost and evaluating payback periods based on local energy prices and climate conditions.

Installation Timeline And Process

Typical steps begin with a detailed bid and equipment selection, followed by scheduling, permitting, and installation. Permits may take one to two weeks in busy seasons, after which installation generally takes one to three days depending on complexity. Commissioning ensures proper start-up, gas pressure, refrigerant charge, thermostat calibration, and system balance. A clean-up and walkthrough confirm that all components function correctly and that homeowners understand basic operation and maintenance needs.

Tip: Ask the contractor for a written project timeline and a checklist of what is included in the installation price to avoid scope surprises.

Alternatives And Considerations

For some homes, a split system with a separate furnace and air conditioner, or a modern heat pump with a gas furnace backup, may offer better value or performance depending on climate and electricity costs. In very cold climates, a dedicated gas furnace paired with a separate air conditioner can provide robust heating and cooling while allowing more flexible upgrades in the future. A professional HVAC contractor can help compare lifecycle costs, comfort, noise, and efficiency when choosing between a Lennox five-ton gas package unit and alternatives.

FAQs

What is the typical lifespan of a Lennox five-ton gas package unit? With regular maintenance and proper installation, expect 12–20 years of reliable service depending on climate and usage.

Do I need ductwork upgrades for a package unit? Often, existing ducts compatible with a packaged unit reduce installation costs and complexity. If ducts are undersized or leaky, upgrades or sealing may be necessary for optimal performance.

Are Lennox price premiums worth it? Higher efficiency and premium features can reduce energy bills and improve comfort. A careful comparison of upfront costs, energy savings, warranty terms, and local incentives helps determine value.

Can I get rebates or tax credits for this upgrade? Yes, many utility programs and federal incentives apply to high-efficiency HVAC equipment. Check ENERGY STAR and DSIRE for current opportunities and verify with the installer before purchasing.

Quick Reference Table

Element	Typical Range
Unit Price (Equipment Only)	$4,500–$9,000
Installation (No Major Duct Work)	$2,800–$4,800
With Duct Modifications	$4,000–$7,500
Permits/Inspections	$100–$300
Total Installed Cost	$7,300–$13,500