HVAC Installation in Kissimmee, FL
Complete heating and cooling systems for Kissimmee homes, additions and new builds: heat pumps, air handlers, ductwork and controls, designed together, permitted with the city or county, and inspected before handover.
A new system here runs most of the year and has to pull moisture out of the air as hard as it cools. We plan the equipment, ducts and controls as one job, starting with a load calculation. We file the permit with the office that covers your parcel.
What are you planning?
The outdoor unit, the air handler and often the ducts come out together, with the new system sized from a room-by-room load calculation.
We check whether your existing system has spare capacity, then extend the ducts, add a separate ducted system or go ductless.
The HVAC goes in with the conversion permit, and an air handler that lives in the garage often moves to an interior closet.
We size and design the system from your plans, then install at rough-in and trim-out.
Leaking, crushed or undersized attic ducts are replaced on their own or alongside new equipment.
Licensed & insured
Load calculation and duct check on every project
Permit filed for you
What an HVAC Installation Covers
We install the whole air path, not just the boxes at either end of it.
A whole-system replacement that reuses sound ducts usually takes one to two days on site. New ductwork, or a system for an addition or new build, takes longer; the timeline section breaks it down. Every house is different, so call us and ask our professionals what your project needs.
Equipment
A heat pump outdoor unit and matched air handler, rated by AHRI as a pair, or a packaged heat pump. Backup electric heat strips are sized to the heating load.
Ducts
Supply and return runs designed for the house, sealed and insulated where they cross a hot attic.
Refrigerant and water
New or flushed refrigerant lines, the condensate drain, and a secondary pan or float shut-off wherever an overflow could reach a ceiling.
Outdoor setup
A level pad, wind anchoring, and a placement that meets setbacks and any association rules.
Electrical
Circuit and disconnect checked against the new equipment, with surge protection as an option.
Controls and air
A thermostat or zoning controls, the filter location, and outdoor-air ventilation where the house needs it.
Paperwork
The permit, startup test results, the final inspection and a walkthrough.
Projects We Handle: Full Systems, Additions, Conversions and New Builds
Most calls we get fit one of these five projects. Each has its own deciding question.
Full-system replacement
The outdoor unit, air handler and often the ducts come out together.
- Under Florida's current energy code, when the complete central system is replaced in our climate zone, electric heat strips can't be the primary heat. So most whole-system changeouts in Kissimmee become heat pump installs, or gas where a line exists.
- If you're not sure the old system is finished, get the current system diagnosed first.
- If only the cooling side is changing, we handle that as a cooling-only equipment swap.
Room additions and Florida rooms
The question is whether the existing system has spare capacity, and in a code-sized Florida home it usually doesn't. Florida's energy code caps new cooling equipment at 115% of the calculated load.
The answer comes from the load calculation. It points to one of three paths:
- Extend the ducts.
- Add a separate ducted system.
- Choose one of our single-room ductless options.
Garage conversions
Osceola County requires a permit to convert a garage to living space, and the HVAC goes with it.
Many Kissimmee homes keep the air handler in the garage, so a conversion often means moving it to an interior closet. The building code also bars duct openings into an attached garage. That matters for any duct work while part of the garage stays a garage.
New builds and custom homes
Osceola County issued 7,366 building permits in 2025 (U.S. Census). New homes are held to the energy code's sizing limits, duct-leakage test and attic-duct insulation levels.
We size and design from your plans and install at rough-in and trim-out.
Duct system replacement
Original attic ducts in 1980s–90s subdivisions such as Buenaventura Lakes are often leaking, crushed or undersized on the return side. We replace them alone or alongside new equipment.
Six Stages of an HVAC Installation Project
The order below is the same for a changeout, an addition or a new build. What changes is how long each stage takes.
Getting in touch
Call (844) 520-1341 and we'll set up a site visit. These details shape that visit:
- The project: whole-system replacement, addition, garage conversion, duct replacement or new build.
- The house: single-family, two-story, condo, townhome, manufactured home or rental.
- What's there now: where the air handler sits, whether the ducts are original, and how the house is heated today.
- Plans or drawings: for any addition or new build.
- What you want fixed: a damp house, a hot upstairs, noise, bills or a room that never cools.
- Your electric utility and association: which utility bills you, and whether an HOA or condo association is involved.
- For rentals: the booking calendar.
The site assessment
In an existing home, we run a room-by-room load calculation and survey the attic ducts: their size, leaks, insulation and how air gets back to the return. On the old system, we measure static pressure, which shows how much air the duct system can actually move. That one number often decides whether the ducts can stay.
We also check:- The air handler location: the closet, garage or attic platform, and whether code access and clearances work.
- The panel: capacity and breaker space for the heat pump and the heat strips.
- The outdoor unit: placement, setbacks, screening rules and flood exposure.
- Gas: whether a Peoples Gas line serves the address, if gas heat is on the table.
For a new build or addition, we work from the plans, so the system is designed before framing closes.
The written proposal
You'll see more than one way to do the job. A typical spread:
- The AHRI matched-system reference
- SEER2 and HSPF2 ratings
- The heat strip size
- The duct scope
- Controls, ventilation and filtration
- Permit handling and what's included
- Any rebate it qualifies for
- A total price
Prices in a proposal are estimates until the scope is final; call us and ask our professionals to confirm yours.
Scheduling and permits
The install date is set once you choose an option and any approvals are in hand.
- Permits: a changeout or duct replacement gets a mechanical permit. An addition or new build carries its HVAC under the building permit's process.
- Associations: an HOA or condo association gets equipment specs before the outdoor unit moves or changes size.
- Utility pre-checks: if a rebate needs one (Duke's Home Energy Check, or KUA's energy audit), it goes on the calendar first.
- New construction: the work follows the build. Ducts and the air handler go in at rough-in, before drywall; equipment is set and started at trim-out.
Installation
The crew protects floors and the path to the equipment, recovers refrigerant from the old system and removes it.
- Air handler: it goes on its stand or attic platform, with a secondary pan or float shut-off where an overflow could do damage.
- Ducts: new or modified runs are connected, sealed with mastic at the joints, insulated, and fitted with balancing dampers where rooms need them.
- Garage air handlers: if the air handler stays in a garage, any duct there is sheet steel with no openings into the garage.
- Outdoors: the outdoor unit is set on its pad and anchored for wind loads.
- Lines and power: the refrigerant lines are pressure-tested and evacuated. Then the system is charged, wired at the disconnect, and connected to its thermostat or zone controls.
Startup, inspection and handover
We measure static pressure, room-by-room airflow, temperature split and refrigerant charge. We run the heat strips and the heat pump's heating mode, and run water through the condensate line.
- Duct leakage test: where code requires one, as on new builds and many additions, it's done and the report goes with the permit file.
- Inspection: the permit office inspects.
- Handover: we walk you through the filter, the thermostat or zones, any ventilation control and the drain cleanout, and hand over the paperwork.
After the first season, seasonal service visits keep the system and its records current.
Project Timelines by Type of Installation
These are general on-site ranges, not dates. Permit offices, associations and builders set the rest of the calendar, and we confirm your dates once those are known.
Select a project type to see its timeline.
On-site work, general range
One to two days
What else sets the calendar
Mechanical permit and final inspection, set by the permit office.
On-site work, general range
About two to four days
What else sets the calendar
Attic access and the size of the duct system.
On-site work, general range
One to several days, by house size and attic layout
What else sets the calendar
The same permit steps.
On-site work, general range
Split into rough-in and finish visits
What else sets the calendar
The construction schedule and building inspections.
On-site work, general range
Rough-in before drywall, trim-out near completion
What else sets the calendar
The builder's schedule and the energy-code duct test.
On-site work, general range
No change on site
What else sets the calendar
The association's review, before work starts.
A typical Kissimmee project
Illustrative example, not a specific customer.
- The house: a 1990s single-story home in Buenaventura Lakes. The owners are converting the garage into a bedroom, and the air handler sits in that garage on a stand.
- The load calculation: run for the house plus the new room. The existing system has no headroom for it.
- The proposal:
- A new heat pump system sized for the whole house
- The air handler moved into a new interior closet
- A supply run and a dedicated return for the bedroom
- Replacement of the attic trunk, which has leaked for years
- The permits: Osceola County issues one for the conversion and one for the HVAC.
- The schedule: the duct rough-in happens while the walls are open; the equipment is set and started after drywall.
Storm season
Hurricane season runs June 1 to November 30. Kissimmee took Hurricane Charley's eye in 2004, and Hurricane Ian flooded neighborhoods along Shingle Creek in 2022. After a named storm, supply houses, crews and inspectors across Central Florida get busier, which can stretch any project. Outdoor units are anchored for wind on every install, and in low-lying spots we talk through pad height before anything is set.
Heat Pump, Air Handler and Duct Systems We Install
Which system fits mostly depends on how the house is heated now and where the equipment can live.
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Split heat pump with air handlerWhat goes in
An outdoor heat pump, an indoor air handler with backup heat strips, and a single-stage, two-stage or variable-speed compressor
Where it fits in KissimmeeMost ducted homes, and the usual choice for a full-system replacement under the energy code
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Packaged heat pumpWhat goes in
All components in one outdoor cabinet, ducted through a wall or under the floor
Where it fits in KissimmeeManufactured homes, including communities around Campbell and Osceola Park, and houses with no indoor equipment closet
-
Heat pump with gas furnace (dual fuel)What goes in
A gas furnace as backup heat in place of strips
Where it fits in KissimmeeHomes on a Peoples Gas line, which reached downtown Kissimmee in 2021. Gas isn't available on every street, so we check the address first.
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Air handler replacement or relocationWhat goes in
A new air handler moved out of an attic or garage into an interior closet
Where it fits in KissimmeeHomes where attic heat, garage conversions or service access make the old spot a problem
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Duct systemsWhat goes in
New supply and return design, attic trunks, returns and transfer grilles
Where it fits in KissimmeeOlder ducts, starved bedrooms, additions and new builds
-
ZoningWhat goes in
Motorized dampers and a zone panel that split one system into areas
Where it fits in KissimmeeTwo-story homes and bonus rooms over garages
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Ventilation and filtrationWhat goes in
An energy recovery ventilator (ERV) or controlled fresh-air intake, plus a media filter cabinet
Where it fits in KissimmeeTight new homes, and households that want better filtration without choking airflow
Two related services round out these systems: room-by-room humidity control with a dedicated dehumidifier, and wall controls through our thermostat choices.
Brands We Install for Whole-System Projects
We install systems from Carrier, Lennox, Rheem, Trane, Goodman, Daikin, Bryant and York, along with other manufacturers. If you already favor a brand, say so at the assessment. Otherwise we'll recommend the line that fits the load, the duct system and the budget.
Brands are listed for reference; listing one doesn't mean we're affiliated with or endorsed by that manufacturer, and lineups change by model year.
Not sure which system fits your house?
Tell us how it's heated now and where the equipment can live. We'll point you to the right fit.
(844) 520-1341Matching the System to Your Kissimmee Property
Osceola County's population grew about 24% between 2020 and 2025, to roughly 482,000 (U.S. Census). That growth means a lot of newer houses sit beside 1980s stock and resort-area rentals, and each needs something different from a system.
Choose your property type
System choice that usually fits
Split heat pump, often two-stage for longer, drier run cycles
What to watch
Attic duct condition, and an air handler in the attic heat
System choice that usually fits
One system with zoning, or one system per floor
What to watch
The upstairs return path; bonus rooms over the garage
System choice that usually fits
A compact air handler in a closet, with a heat pump on a shared pad or roof
What to watch
Association approval, equipment size limits and roof access
System choice that usually fits
Separate systems or zones for wings or floors, sized for full occupancy
What to watch
Humidity control while the house sits empty between bookings; installs planned around check-ins
System choice that usually fits
Variable-speed or two-stage equipment, with humidity control the owner can watch remotely
What to watch
Long empty stretches in the wet season
System choice that usually fits
Standard-efficiency heat pump with straightforward controls
What to watch
Tenant access, filter access and the owner's hold period
System choice that usually fits
A packaged heat pump or downflow air handler, matched to the data plate
What to watch
Equipment must be approved for manufactured housing
System choice that usually fits
A system designed from the plans, ducts inside or sealed and tested
What to watch
Architectural review of outdoor equipment
Load Calculation, Duct Design and Humidity Control
From June through August, morning relative humidity at Orlando International, the long-term weather station closest to Kissimmee, sits near 90% (FSU Climate Center normals). A system that's oversized or starved for air will cool a house here without drying it.
We size from an ACCA Manual J load calculation and select equipment with Manual S. For new homes and additions, Florida's energy code bans padding: cooling capacity can't exceed 115% of the calculated load, and the system has to cover the latent (moisture) load too. The 9th edition of the code, scheduled for December 31, 2026, adds sizing options for two-stage and variable-speed equipment. It also lets a dehumidifier carry the moisture load.
We lay out ducts with ACCA Manual D, so each room gets the air it needs and gets it back to the return. Many Kissimmee houses have one hallway return, so closed bedroom doors starve the system; transfer grilles or added returns fix that.
Ducts in an unconditioned attic need R-8 insulation, and new-construction duct systems are leak-tested against the energy code's limit.
Two-stage and variable-speed equipment runs longer at low speed, which pulls more water out of the air. An ERV brings in fresh air with less moisture than an open intake, but it doesn't dehumidify the house.
High-MERV filters need a larger filter cabinet; a high-rated filter jammed into a small slot raises static pressure and can make ducts sweat in an attic.
| Equipment | Federal minimum in Florida |
|---|---|
| Split heat pump | 14.3 SEER2/7.5 HSPF2 |
| Packaged heat pump | 13.4 SEER2/6.7 HSPF2 |
New split heat pumps mostly use R-454B or R-32, both rated A2L (mildly flammable) and installed to the ASHRAE 15 standard Florida's mechanical code adopts. Under an EPA rule finalized in May 2026, split systems built from components made or imported before 2025 can still be installed. Indoor and outdoor units must use the same refrigerant.
Code details vary by project, so call us and ask our professionals which ones apply to yours.
(844) 520-1341What a New HVAC System Costs in Kissimmee
As a general estimate, replacing a complete ducted heat pump system (outdoor unit and air handler) in a typical Kissimmee home tends to run somewhere around $7,000 to $16,000. New ductwork, zoning, ventilation equipment, or a system for an addition or new build is scoped separately and can take a project well past that range.
All figures here are general estimates, not actual prices. What you pay depends on your home and the system you choose, so confirm by calling us and asking our professionals.
What changes the total
For actual prices, connect with our professionals.
(844) 520-1341Heat Pump Rebates, Incentives and Financing
Which rebate you can get depends on who sends your electric bill. These amounts come from each utility's own pages, checked in October 2026, and are subject to change without notice.
Who sends your electric bill?
Kissimmee Utility Authority (KUA)
Heat pump rebate$250
Rebate
- $250 for a heat pump central A/C replacement
Conditions to know
- KUA's heat pump page lists the older rating terms (16 SEER / 8.5 HSPF) and asks for an AHRI certificate and the permit.
- Its main rebate page says an in-home energy audit comes first.
Heat pump rebate$500 – $1,000
Rebate
Conditions to know
- A Home Energy Check before installation, or one in the past 24 months.
- Its duct test-and-repair program uses prequalified contractors.
OUC (St. Cloud)
Heat pump rebate$45 – $1,150
Rebate
- $45 to $1,150, by size and efficiency, at 15.2 SEER2 or higher
Conditions to know
- An AHRI certificate matching the invoice
- Receipts within 6 months
Credits, programs and paying for the system
Federal credit
The 25C tax credit doesn't apply to systems installed after December 31, 2025.
State program
Florida's income-based home energy rebates (the Florida Energy Saver Program) hadn't opened as of October 2026.
Financing
Financing options are available; ask about current terms at the assessment.
Paperwork
We supply the AHRI certificate utilities ask for.
Rebate rules change often, so call us and ask our professionals which ones apply at your address.
Permits, Energy Code and Inspections for System Installs
The permit depends on the kind of project as much as the address.
Choose your project
Whole-system or duct replacement
Permit
Mechanical permit from the City of Kissimmee or Osceola County, depending on the parcel (Orange County in Hunters Creek)
What gets inspected or tested
- Final mechanical inspection
Room addition
Permit
HVAC handled within the addition's building permit; the City of Kissimmee treats it as a sub-permit
What gets inspected or tested
- Rough and final inspections
- Energy-code paperwork
- Duct testing where the code requires it
Garage conversion
Permit
A building permit for the conversion (Osceola County lists it), plus the HVAC work
What gets inspected or tested
- The same inspections as a room addition: rough and final inspections, energy-code paperwork, and duct testing where the code requires it
- Plus the garage-separation duct rules
New build
Permit
Under the home's building permit
What gets inspected or tested
- Sizing documentation
- Energy-code compliance
- The duct leakage test
Code and licensing rules to know
HB 803
Florida's 2026 permit-exemption law, in effect since July 1, 2026, doesn't cover mechanical work. Every project above still needs a permit.
Strip heat
When a complete central system is replaced, the energy code bars electric resistance as the primary heat. The 9th edition, scheduled for December 31, 2026, extends sizing and strip-heat rules to new systems in additions.
Licensing
HVAC installation is licensed work. We're licensed and insured, and we file the permit and schedule inspections for you.
Requirements differ by parcel and project; call us at (844) 520-1341 and ask our professionals which apply to yours.
Warranty Questions on a New System
Coverage varies by manufacturer, by component and by the paperwork behind the install, so we don't summarize it here.
Coverage varies by
- Manufacturer
- Component
- Paperwork behind the install
Call us at (844) 520-1341 and ask our professionals about warranty terms and claims for the equipment in your proposal.
Until then, keep these together
Tick them off as you file them.
Vacation home?
Where We Take On Installation Projects
Primary area
- Kissimmee including Downtown and the US-192 Corridor
- Buenaventura Lakes
- Hunters Creek
- Celebration
- Poinciana
- St. Cloud
- ChampionsGate
- Four Corners
Extended coverage
- Davenport
- Clermont
- Winter Park
- Altamonte Springs
Other communities
- Campbell
- Sanford
- Apopka
- Ocoee
- Lake Mary
The utility changes with the area, and so does the rebate: St. Cloud homes are on OUC, whose program works differently from KUA's.
Questions About New HVAC Systems in Kissimmee
Filter by topic
Plan Your HVAC Installation With Us
Send us the project: the house, any plans, and what the current system isn't doing. We'll measure, run the load calculation and lay out the options in writing.
Send us the project
- The house
- Any plans
- What the current system isn't doing
-
Step 1
We'll measure
-
Step 2
Run the load calculation
-
Step 3
Lay out the options in writing
Kissimmee HVAC 1551 N Kelley Ave, Kissimmee, FL 34744 Licensed and insured