A Lennox 5-ton heat pump typically costs $8,000-$18,000 installed, with many standard replacement projects near $12,500. Equipment tier, ductwork condition, electrical changes, local labor rates, and whether the job includes a furnace or air-handler replacement can shift the quote substantially.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed 5-ton system | $8,000 | $12,500 | $18,000 | Standard replacement, equipment and labor |
| Heat pump equipment | $4,500 | $7,500 | $12,000 | Model, efficiency, and controls affect price |
| Installation labor | $2,000 | $3,500 | $5,500 | Typical replacement labor and setup |
| Installed rate | $1,600 | $2,500 | $3,600 | Approximate per ton, not a standalone quote |
What a Lennox 5-ton heat pump costs installed
For a straightforward replacement, budget $8,000-$13,000 for a basic or mid-tier Lennox system and $13,000-$18,000 for a higher-efficiency or variable-capacity setup. Complex projects with substantial duct repairs, electrical work, or a new air handler can exceed that range. A 5-ton system is nominally sized for about 60,000 Btu per hour, but correct capacity depends on a load calculation, not just home square footage.
A practical midpoint is about $12,500 installed for standard equipment, ordinary access, and compatible existing ducts. Prices vary by model and dealer; Lennox equipment is generally sold through contractors, so installation quotes often bundle the unit, controls, labor, startup, and warranty registration. Assumptions: U.S. replacement project, standard materials, no major duct redesign, and normal equipment access.
How equipment, labor, and removal shape the quote
Quotes may combine several tasks into one total. Asking for an itemized estimate helps distinguish a higher equipment price from necessary site work, and makes competing bids easier to compare.
| Quote item | Typical range | What changes the charge |
|---|---|---|
| Lennox outdoor unit and indoor coil | $4,500-$12,000 | Efficiency, compressor type, and product tier |
| Air handler or compatible furnace work | $1,500-$4,500 | New equipment, cabinet fit, and controls |
| Installation labor | $2,000-$5,500 | Crew time, access, and commissioning |
| Old equipment removal | $200-$700 | Haul-away, refrigerant recovery, and disposal |
| Electrical, pad, or line-set work | $300-$2,000 | Code needs, condition, and distance |
Labor commonly accounts for roughly $2,000-$5,500 of a replacement quote, though bundled pricing can obscure the exact allocation. Example: 16-24 crew-hours at an effective $125-$225 per hour produces $2,000-$5,400 in labor value.
Which efficiency ratings and duct sizes raise the price
Efficiency and staging are major price drivers. A basic single-stage model generally costs less than a variable-capacity system with communicating controls; the premium can add roughly $2,000-$5,000 installed, depending on the matched indoor equipment. Higher SEER2 and HSPF2 ratings may also raise the equipment price, while local energy costs affect whether that premium pays back.
Existing ductwork can matter as much as the model choice. A 5-ton system needs adequate airflow, commonly near 2,000 cubic feet per minute at typical design conditions. Undersized returns, leaking ducts, or long runs may require $500-$3,000 in modifications. If a refrigerant line set is longer than about 25-50 feet, inaccessible, or incompatible with the new system, replacement can add several hundred to more than $1,500.
When a 5-ton replacement needs extra crew time
A like-for-like swap often takes one working day, while a job involving an air handler, electrical upgrades, or duct repairs can take 1-2 days. Contractors may schedule a two-person crew, with more help needed for difficult attic, crawlspace, or rooftop access. Installation quotes should include evacuation, refrigerant charging, airflow checks, and system commissioning rather than equipment placement alone.
Unusual access or a same-day emergency can increase labor charges. Ask whether the estimate includes a service or diagnostic fee, crane or lift rental, thermostat setup, and startup testing. A lift may add $300-$1,500 or more depending on access and local rental rates; a standard permit may cost roughly $50-$500 where required.
How regional labor shifts Lennox heat pump pricing
Local labor, permitting, and demand can move installed prices even when the equipment is identical. Large metro markets and areas with high contractor demand may run 10%-25% above a typical national quote. Lower-cost rural markets may be 5%-15% below, although travel charges or limited installer availability can erase that difference.
Compare local bids for the same model and scope, not just the same tonnage. Cold-climate areas may favor higher-performance equipment and backup heat options, while milder regions can use simpler configurations. Ask contractors to identify model numbers, included indoor components, warranty terms, and any region-specific electrical or code work.
Three realistic 5-ton quote examples
| Project scenario | Scope and labor | Estimated total |
|---|---|---|
| Basic replacement | Standard single-stage unit, existing air handler and ducts, 14-18 crew-hours | $8,500-$11,500 |
| Mid-tier upgrade | Higher-efficiency system, new controls, minor electrical work, 18-24 crew-hours | $12,000-$16,000 |
| Complex system change | Variable-capacity unit, new indoor equipment, line-set or duct updates, 24-32 crew-hours | $16,000-$22,000 |
These examples assume ordinary residential access and no major structural repairs. The lower end fits compatible existing infrastructure; the upper end reflects more equipment or site work. Per-ton pricing is useful for a rough check, but it cannot account for duct condition, electrical requirements, or equipment matching.
Ways to lower the installed price without cutting scope blindly
Keep the project limited to work supported by an inspection. If ducts, line set, electrical service, and indoor equipment are compatible and in sound condition, replacing them automatically may add cost without a clear benefit. Conversely, retaining damaged ductwork can reduce airflow and undermine performance, so ask for documented reasons before approving repairs or declining them.
Compare at least three written bids with matching equipment specifications. Ask each contractor to separate equipment, labor, removal, permits, and optional upgrades. Scheduling outside peak heating or cooling demand may improve availability, though savings are not guaranteed. Avoid choosing solely by the lowest total: verify the exact Lennox model, startup and commissioning, labor warranty, and what happens if installation reveals additional work.