A Flex AC system, commonly referring to a GREE Flexx variable-speed ducted heat pump, typically costs $8,000-$16,000 installed in a U.S. home. Final pricing depends on system capacity, existing ductwork, electrical work, local labor rates, and whether the quote includes both heating and cooling equipment.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete installed system | $8,000 | $12,000 | $16,000 | Typical replacement with usable ducts |
| Outdoor and indoor equipment | $4,500 | $6,500 | $9,000 | Capacity and model affect price |
| Installation labor | $2,000 | $3,500 | $5,500 | More for difficult access or system changes |
| Duct repairs or modifications | $0 | $1,200 | $4,000 | May be unnecessary if ducts are sound |
What a Flexx heat pump installation usually costs
For a standard changeout, homeowners commonly pay $8,000-$13,000 for a complete GREE Flexx system, including the outdoor heat-pump unit, compatible indoor air handler, basic controls, refrigerant connections, and installation. A larger home, new ductwork, electrical upgrades, or premium accessories can bring the total to $14,000-$20,000 or more.
The equipment is a variable-capacity central heat pump designed to work with ducted systems. It provides both cooling and heating, so a quote should cover the indoor and outdoor units rather than an outdoor condenser alone. A basic replacement generally assumes existing ducts, electrical service, and condensate drainage are in usable condition.
A practical budget is about $10,000-$14,000 for a common 2- to 4-ton installation with ordinary access and limited duct repairs. Prices vary substantially by location; coastal metros and areas with high contractor demand often land above the national midpoint.
Assumptions: U.S. residential installation, standard equipment configuration, existing ductwork retained, and no major structural or electrical upgrades.
How equipment, labor, and duct repairs shape the quote
Ask for itemized pricing. A single installed total can conceal whether the contractor included a new air handler, permits, commissioning, removal of the old equipment, or duct corrections. The ranges below describe common quote components; not every job needs every line item.
| Quote component | Typical price | Unit or scope | What changes the charge |
|---|---|---|---|
| Outdoor heat pump and indoor air handler | $4,500-$9,000 | Complete equipment pair | Capacity, model, included controls |
| Installation labor | $2,000-$5,500 | Roughly 16-32 crew hours | Access, line-set work, replacement complexity |
| Duct sealing or balancing | $300-$1,500 | Whole-system service | Leakage, airflow problems, number of branches |
| Duct replacement or major modification | $2,000-$8,000 | Partial or extensive duct scope | Attic access, duct length, insulation needs |
| Electrical work and disconnect | $300-$1,800 | Per system | Panel capacity, wiring distance, code needs |
| Permit, haul-away, and startup | $150-$900 | Per project | Local fees, disposal, testing included |
Labor pricing may be shown as a package rather than an hourly bill. For comparison, installed labor often corresponds to roughly $75-$150 per technician-hour, depending on market and crew size. Confirm whether the estimate includes evacuation, refrigerant charging, airflow checks, thermostat setup, and a documented startup test.
Equipment is only part of the installed price; duct and electrical conditions can add several thousand dollars. A quote that excludes duct repairs may be reasonable if the system is verified to have adequate airflow and no significant leakage.
Why tonnage, duct condition, and electrical capacity change price
System capacity is a major cost driver. A roughly 2-ton setup may suit a smaller, well-insulated home, while a 3- to 5-ton system may be needed for a larger or higher-load house. Capacity should follow a professional load calculation, not just the size of the old unit. Oversizing can raise equipment cost and contribute to poor comfort or humidity control.
As a broad budgeting comparison, moving from a 2-ton to a 4- or 5-ton equipment configuration can add about $700-$2,000, before any related duct or electrical work. The exact difference depends on the available model, matching air handler, and installation scope. Ask the contractor to state the selected capacity and explain the load estimate.
Ductwork can sharply change the project total. Sealing a few accessible leaks may cost $300-$800, while replacing or extensively reworking ducts can add $2,000-$8,000 or more. A duct system with undersized returns, crushed flex duct, or runs longer than about 25-30 feet may need correction to deliver the intended airflow.
Electrical work depends on the existing panel and the distance to the equipment. A straightforward disconnect or circuit adjustment may cost $300-$700. A new circuit, long wire run, or service-panel upgrade can push the electrical portion to $1,000-$3,500. Permit requirements and inspection fees vary by city and county.
Capacity, duct airflow, and available electrical service should be checked before equipment is ordered. These details affect both the system’s fit and the likelihood that the first estimate reflects the final bill.
How many installation hours does a ducted Flexx system take
A straightforward replacement often takes one workday, or about 8-12 hours for a two-person crew. The crew removes the old equipment, sets the new units, reconnects refrigerant and electrical lines, and tests operation. A more complicated installation can take 2-3 days, especially when ductwork, a condensate route, or electrical circuits need substantial changes.
At a rough labor benchmark of $75-$150 per technician-hour, a two-person crew working 8-12 hours represents $1,200-$3,600 in labor time before overhead and other job costs. Actual contractor pricing may not follow an hourly formula: flat-rate bids also account for insurance, travel, warranty obligations, tools, and business expenses.
Access affects schedule and price. A cramped attic, tight crawlspace, long line-set route, or equipment location requiring a lift can add several hours and sometimes $300-$1,500 in labor or handling charges. Confirm whether the estimate includes old-unit removal and cleanup.
Budget one day for a simple replacement and allow extra time when ducts or wiring are part of the scope. A contractor should explain which tasks could extend the job and whether additional work requires approval before charges are added.
Regional labor rates move Flexx system prices up or down
Local labor, permitting, and contractor availability can shift a comparable project by roughly 10%-25%. High-cost metro areas in the Northeast, West Coast, and parts of Hawaii may price 10%-25% above a national midpoint. Smaller cities in the Midwest or South may come in about 5%-15% below it, particularly when the installation is a simple equipment replacement.
These are planning comparisons, not fixed regional price lists. Rural projects can also cost more when travel is long, qualified installers are scarce, or equipment delivery requires special handling. In hot-weather markets, peak-season demand can tighten schedules and affect quote availability.
Request two or three written estimates from contractors serving the same area and compare equipment capacity, model numbers, labor scope, permit fees, and warranty terms. A low quote may exclude duct sealing or electrical work that another contractor included.
Compare complete scopes rather than judging a Flexx system quote by its total alone. Regional price differences are most useful when the compared estimates include equivalent equipment and startup work.
Three Flexx installation examples with different scopes
These examples show how capacity and site conditions change a realistic budget. They are illustrative U.S. estimates, not guaranteed local quotes, and assume a licensed contractor installs and starts up the equipment.
| Project | Equipment | Labor and other work | Estimated total |
|---|---|---|---|
| Small-home changeout | 2-ton pair, $4,800-$5,800 | 16-20 crew hours; basic connections and haul-away, $2,200-$3,200 | $7,500-$9,500 |
| Typical 2,000-sq-ft replacement | 3-ton pair, $5,500-$7,000 | 20-26 crew hours; balancing and minor duct sealing, $3,000-$4,500 | $9,500-$13,500 |
| Large home with duct changes | 4- to 5-ton pair, $6,500-$9,000 | 28-40 crew hours; duct and electrical work, $5,000-$9,000 | $12,500-$20,000 |
The 2,000-square-foot example is not a sizing rule. Insulation, windows, ceiling height, climate, and layout can change the required capacity. For all three cases, ask the contractor to specify whether the total includes tax, permit fees, thermostat, disposal, and any warranty registration or commissioning.
A larger house can cost more because of both equipment capacity and work beyond the equipment installation. A quote with a low equipment price may still be expensive after duct repairs and electrical additions are included.
Flexx heat pump pricing versus standard AC and mini-splits
A conventional central AC replacement commonly falls around $6,000-$12,000 installed, while a ducted heat pump such as a Flexx system often costs about $8,000-$16,000. The heat pump can provide heating as well as cooling, but the comparison depends on whether the alternative quote includes a furnace, backup heat, or other necessary components.
A ductless mini-split may cost about $3,500-$7,500 for one zone, with multi-zone systems commonly reaching $8,000-$18,000. Mini-splits can avoid new ductwork, but they are not a direct substitute in every home: room coverage, indoor-unit locations, and heating needs matter. Repairing an existing central system may cost $200-$1,500 for common issues, but major compressor or coil work can exceed that range.
Compare expected scope, not just equipment labels. A central system with sound ducts may be less disruptive than installing multiple indoor heads. Conversely, extensive duct replacement can make a ductless option worth pricing. A contractor should identify the parts being replaced and whether existing heating equipment will remain in service.
The lowest upfront option depends on what the house already has and which heating components the project replaces. Request a separate estimate for repair when the existing system is otherwise serviceable.
Which Flexx quote items can homeowners control
Keep the project scope clear before comparing bids. Ask each contractor to price the same capacity, indoor and outdoor equipment, thermostat, duct work, electrical scope, permits, and disposal. If duct replacement is proposed, request the measured area or runs involved and a separate price for sealing or repair where appropriate.
Choosing a standard control package and retaining usable ducts can avoid unnecessary upgrades. Do not reduce the system capacity simply to lower the quote; instead, ask for the load calculation and compare the proposed capacity with the home’s conditions. A documented airflow or duct assessment can help distinguish needed improvements from optional work.
Scheduling before the hottest or coldest weeks may provide more appointment options, though seasonal savings are not guaranteed. If a system has failed, ask whether a temporary repair is safe and practical while comparing replacement estimates. Bundling unrelated work only makes sense when the labor or mobilization savings are clearly itemized.
Scope control and matched, written estimates are the most reliable ways to prevent avoidable charges. Check payment terms, labor warranty length, equipment warranty requirements, and exclusions before approving the work.