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★★★★★ 4.8 · 1,300+ reviews
Lic. CAC1819196 · CFC1431159

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Air conditioning

Looking for AC Installation in Keystone?

Expert AC Installation Services in  Keystone

Keystone is a semi-rural community in northwest Hillsborough County known for its larger lot sizes, horse properties, and a mix of older ranch homes and newer custom builds. Homes here range from modest 1,200 square foot houses built in the 1970s to sprawling 4,000 square foot custom homes on acreage.

Replacing the AC on your Keystone property? We run a full Manual J, measure the line-set run and quote Goodman and Daikin side by side in writing.

Home Therapist serves Tampa Bay, Florida. In the area? FREE estimates and FREE diagnosis.

  • Licensed CAC1819196 & CFC1431159
  • 4.8 stars from 1,405 reviews
  • Background-checked, drug-tested techs
  • Hablamos español

At a glance

New AC system
$7,141 to $19,931 installed, plus the permit fee
Typical Keystone home
$8,063 to $12,000
Thermostat
Included with every package
Long line sets
Condenser pads often sit 50 to 80 feet from the air handler
Load calc
Full ACCA Manual J on every Keystone install
Permit
Hillsborough County permit; we pull it, the fee is billed separately
TECO rebate
Up to $550 on qualifying systems
ZIP code
33556: Steeplechase, Eagle Trace, Stillwater

Years of Experience

Licensed HVAC technicians delivering professional AC installation in Keystone and the Tampa Bay area for over a decade.

Licensed (CAC1819196), Bonded & Insured.

Free Estimates

Whether it’s a small leak or a major AC repair, our team provides clear, upfront pricing to Keystone homeowners.

Same Day Services

AC problems can’t wait, that’s why we answer 24/7, and same-day service is often available for Keystone residents.

AC Installation Costs in Keystone

ServicePrice
Value Tier (Goodman, standard efficiency)$7,141 to $10,132
Premium Tier (Goodman, high efficiency)$9,027 to $12,384
Elite Tier (Goodman GZV6S or Daikin DH6VS, side-discharge inverter)$13,999 to $19,931
Thermostat Upgrade (add-on)Included; smart upgrades quoted
Ductwork Replacement (if needed, per drop)$639 to $859

Pricing updated October 2026. All AC installation prices include equipment, labor, and warranty; permit fees are billed separately. Free in-home estimates. Financing available.

Keystone AC Installation Pricing

All projects include FREE in-home estimate, FREE diagnosis on existing equipment, and a written warranty; labor coverage depends on the system.

Goodman Value Tier

From $7,141

  • Goodman GLXS4B single-stage R-32 condenser
  • 10-year manufacturer parts warranty
  • Full ACCA Manual J load calc included
  • Correctly sized line set for long Keystone runs
  • Hillsborough County mechanical permit handled for you (permit fee billed separately)

Elite Tier: Goodman GZV6S or Daikin DH6VS

Up to $19,931

  • Goodman GZV6S or Daikin Fit DH6VS side-discharge inverter condenser
  • Parts and unit replacement warranty: 10 years Goodman, 12 years Daikin
  • Up to 18 SEER2 efficiency rating
  • Communicating thermostat included
  • Inverter modulation 30 to 100 percent output
  • TECO rebates eligible

Financing available with $0 down for qualifying applicants. TECO Energy runs rebate programs for qualifying high-efficiency systems; the amount depends on its current program, so check it before you buy. The federal heat pump tax credit ended for installs after December 31, 2025.

January 1, 2026 A2L Refrigerant Rules and Equipment Lifespan

Effective January 1, 2026, every new residential AC system manufactured in the United States ships with an A2L refrigerant (R-32 or R-454B, depending on the brand) instead of R-410A. R-454B has 78 percent lower global warming potential and an A2L mildly flammable classification, which requires updated installer training, leak detection sensors on indoor air handlers, and refrigerant line set diameters sized to the new specification. For Keystone homeowners weighing whether to repair a 12-year-old R-410A system or replace now, the new R-32 equipment ships with 12-year parts warranties from Daikin and 10-year parts from Goodman, and R-410A refrigerant cost will climb sharply through 2026 and beyond. Florida South minimum SEER2 is 14.3. TECO Energy rebates (up to $550 on qualifying systems) still apply; the federal heat pump credit ended for installs after December 31, 2025, and Florida's HEAR rebate is not open yet.

Keystone AC at end-of-life? Call (813) 343-2212 for a FREE estimate with full Manual J and proper line-set sizing.

What Does a New AC System Cost in Keystone?

Free Estimates and Financing Available

Keystone AC installations require a flexible approach because no two properties in this community are quite alike. TECO provides electric service throughout the Keystone area, and homes with larger square footage see the most dramatic savings when upgrading to high-efficiency equipment. Older ranch homes in Keystone frequently have ductwork routed under the slab or through enclosed soffits, which limits modification options and makes proper system sizing even more critical.

Last updated: April 2026

How Do You Choose the Right AC System?

Goodman, Daikin, and More

The varied construction means AC installation needs differ dramatically from one property to the next. Longer refrigerant line runs are common on properties where the home sits far from the ideal condenser location, and older homes on well water may have different humidity profiles than homes on county water. Along Gunn Highway and Keystone Road, older ranch-style homes on half-acre to five-acre lots frequently need complete system replacement including ductwork that was originally designed for a much smaller cooling load. In the newer Odessa-adjacent sections of Keystone near Van Dyke Road, custom-built homes often need 5 ton systems or even dual systems to handle their larger footprints.

Recent AC installation jobs in Keystone

A new Goodman AC unit beside a home in Odessa, FL 33556.
A new Goodman AC unit beside a home in Odessa, FL 33556.

Why Keystone homeowners choose us

Recent reviews from Tampa Bay homeowners, refreshed every day from Google. See all our reviews.

★★★★★★ 4.8 (1,405 verified reviews)
Verified4.8★ · 1,405 reviews
🛡 FL Licensed: CAC1819196 · CFC1431159💼 $1M General Liability + Workers’ Comp🏠 Family-owned since 2017⚡ Same-day service
★★★★★AC install

I was in need of air conditioning for my detached garage. My AI search for the most trustworthy mini-split AC installer led me to Home Therapist; my expectations were exceeded. Scheduling a…

Ricardo Gonzalez, M.D. · · Google
★★★★★AC install

Excellent service from Richard! He was professional, courteous, and very knowledgeable. He fixed my A/C problem quickly and explained everything clearly. I highly recommend Richard for anyone needing A/C service. had a…

mohammed suleiman · · Google
★★★★★

When my HVAC unit needed to be replaced, I chose this company based off of their reviews and the fact they offer a free estimate. I am very happy with my decision.…

Christine · · Google
★★★★★

Had a great experience with Home Therapist. They worked with me to stay within a budget, they communicated great, and they got the job done when they said they would. Will use…

Max Findreng · · Google
★★★★★

Archer was super nice and was very helpful in explaining the process. No gimmicks and pure professionalism. They were super responsive and it was easy to get a hold of them to…

Nina Seely · · Google
★★★★★Plumbing

Lester is a great plumber. He is friendly, professional, and his work is outstanding. The plumbing lines were placed perfectly in the garage and the area was left clean and neat. Certainly…

Al Car · · Google
★★★★★

Excellent service, quick response, and I already have air conditioning!

Kamirelis Ramirez Ortiz · · Google
★★★★★Plumbing

Hi I'm Wyatt, My experience with Home Therapist's plumber(Lester) was great. He came weeks earlier & gave a fair quote. Several others' left larger quotes with exaggerated upgrades; a few seems smug…

CLEANE CUT · · Google
★★★★★Water heater

I had a great experience with Home Therapist Cooling, Heating, and Plumbing. We were getting our house ready to sell and the home inspection identified several plumbing issues that needed to be…

Manny Velasquez · · Google
Latest review: October 2026 · auto-refreshed daily

What AC Installation Customers Say

Real Google reviews from Tampa Bay homeowners. Source: Home Therapist verified Google Business Profile (1,300+ five-star reviews aggregate).

★★★★★

They worked on my AC and were very helpful and friendly. Definitely recommend them!!
Muluken Damessa · Verified Google Review

★★★★★

I had a great experience with Alejandro from Home Therapist Cooling, Heating, and Plumbing. He repaired two toilets and installed the water line to my new refrigerator after the delivery team refused to connect it due to the existing plastic line. Alejandro truly went the ext..
Thomas Jones · Verified Google Review

Why Do Keystone Homeowners Choose Us?

Expert Installers Since 2017

Since 2017, Home Therapist Cooling, Heating, and Plumbing has been keeping Keystone homes comfortable year-round. Whether you live near Keystone Recreation Center, Keystone Community Church, Al Lopez Park, Gunn Highway Corridor, or out by Westchase Golf Club, our licensed technicians (license CAC1819196) provide same-day ac installation with upfront pricing with FREE diagnosis. We have completed more than 12,000 jobs across Tampa Bay since 2020, earned 1,300+ five-star reviews, and our trucks carry parts for most major brands, including Carrier, Trane, Lennox and Rheem. Keystone weather pushes home systems hard, and when yours stops working, we get there fast and fix it right the first time.

How Does Our Installation Process Work?

By Your Side at Every Step

  1. Call us or book online, we’ll handle the details hassle-free!
  2. Your AC Installation specialist arrives on time, ready for a job done right.
  3. Relax and enjoy the comfort of your home!

Condenser pad far from the house?

We measure the line-set run on the FREE visit and size the copper for it in your written quote. The estimate is FREE.

Why Keystone AC Installation is a 15-Year Decision

Keystone is a low-density Hillsborough rural-residential area in 33556 where Steeplechase, Eagle Trace, and Stillwater homes sit on 1-acre and larger lots with private wells, mature canopy, and longer line-set runs to remote condenser pads. The next AC install is a 15-year commitment that demands an honest ACCA Manual J for these custom 1990s through 2010s floorplans, attic-mounted air handler protection, ductwork integrity verification, and proper line-set sizing across the larger distances common in Keystone. Cut corners on Manual J or line set and you lose part of the efficiency you paid for. FREE in-home estimate. FREE diagnosis on every visit.

Licensed CAC1819196 (HVAC) | CFC1431159 (Plumbing) | 1,300+ Five-Star Reviews

Three Keystone Specifics That Change Our AC Installation

ACCA Manual J for Custom Keystone Floorplans

Keystone homes were built across a 15-plus year window with custom floorplans, variable insulation specs, and a wide range of window glazing. A generic ton-per-square-foot rule often under-sizes or over-sizes the equipment in this neighborhood. We run a full ACCA Manual J on every Keystone install that accounts for the actual window orientation (Keystone properties often have heavy west-facing glass for sunset views), real attic R-value, and infiltration measured at the front door. Right-sized equipment runs longer cycles at lower output, pulls more humidity, and lasts longer.

Full Manual J load calc included free on every Keystone install.

Long Line-Set Runs to Remote Condenser Pads

Keystone 1-acre and larger lots often have the condenser pad 50 to 80 feet from the indoor air handler, which is at the upper end of standard line-set lengths. Line sets sized for shorter runs cause low-charge faults and compressor strain. We measure the exact run distance during the FREE estimate and specify the correct line-set diameter (often 7/8 inch suction line vs the standard 3/4) plus add an oil trap for vertical lifts over 20 feet. Original installs frequently undersized the line set, which caused the compressor failure that triggered this replacement.

Line-set sizing math on every Keystone install estimate.

Attic Air Handler Protection in 130-Plus-Degree Summers

Most Keystone homes have air handlers in unconditioned attic space that hits 130 to 140 degrees in summer. This shortens motor and capacitor life compared to closet-mounted installs. We recommend either upgrading attic insulation around the air handler enclosure or specifying enhanced-spec motors and capacitors built for high ambient temperatures. We also include an overflow safety switch and a redundant condensate drain pan on every Keystone install: a clogged primary drain in an attic unit causes $4,000 to $8,000 in ceiling drywall damage when the secondary overflow is not installed.

Attic insulation review plus overflow safety on every Keystone install.

The techs who do the work

Our HVAC work is done under Richard Morales’s Florida Class B Air Conditioning Contractor license, CAC1819196. Every tech is background-checked and drug-tested, factory-trained, and trains with us every week. Meet the whole team.

Jandiel, HVAC technician at Home Therapist

Jandiel

HVAC technician

Roberto

HVAC technician

Alejandro, HVAC and plumbing technician at Home Therapist

Alejandro

HVAC and plumbing technician

AC installation questions from Keystone homeowners

How much does it typically cost to install AC?

A new central AC system from Home Therapist runs $7,141 to $19,931 installed, depending on the size and package you choose. Every package includes a thermostat; the permit fee is billed separately. Diagnosis and estimates are always FREE. Call or text (813) 343-2212.

What is the $5000 rule for AC?

It is a rule of thumb, not a Florida code or an industry standard. It says to multiply the system's age by the repair cost and compare the result to $5,000. We do not use it. We give you a FREE diagnosis and a written quote, so you can compare repair against replacement.

How much should AC installation cost?

A new central AC installed by Home Therapist runs $7,141 to $19,931, depending on the tier (Value, Premium or Elite), the tonnage and the condition of your ductwork. The estimate is FREE and written. The permit fee is billed separately, and every package includes a thermostat.

How much is a new AC unit for a 2000 sq ft house?

Square footage alone does not set the size. Tonnage comes from a load calculation that looks at insulation, windows, ducts and sun exposure. As a reference, a 3-ton Goodman Value AC is $8,018 to $8,475 installed. We size your home during a FREE estimate and put the price in writing.

What is the average cost of an AC service call?

Many Tampa Bay companies charge just to show up and diagnose. At Home Therapist the diagnosis and the estimate are FREE on every visit, at any hour, with no service call or after-hours fee. You approve a written quote before any repair begins. An AC tune-up is a flat $89 per system.

How much does a new AC system cost in Keystone?

Keystone AC installation costs vary more than most Tampa Bay communities because of the range of home sizes and property configurations. Standard replacements in conventional homes start at $7,141 for a Goodman Value system. Larger custom homes needing 5 ton systems or dual-system configurations are quoted in writing. The typical Keystone home falls in the $8,063 to $12,000 range, with longer refrigerant line runs and older ductwork being the most common factors that push costs toward the upper end.

What size AC unit do I need for my Keystone home?

AC sizing depends on your home’s square footage, insulation, window count, and layout. A rough guide is 1 ton per 500 square feet in Florida, but that varies. In Keystone, where most homes were built in the 1970s to 2010s, insulation quality and ductwork condition are key factors. An undersized unit will run constantly and never cool properly. An oversized unit will short-cycle and create humidity problems. We perform a Manual J load calculation to determine the exact size your Keystone home needs.

How long does AC installation take?

Many homes here from the 1970s to 2010s usually have straightforward access to the air handler and ductwork. If we are replacing ductwork or moving the air handler, it can take a second day. We schedule the work to minimize disruption and always clean up before we leave.

What AC brands do you install in Keystone?

We install Goodman as our Value and Premium tier and Daikin as our Elite tier. Both brands are well-suited for Keystone’s climate and older and newer homes. Goodman offers excellent reliability at a great price point, while Daikin provides top-tier efficiency that pays for itself through lower TECO bills. We help Keystone homeowners choose the best match for their budget and home layout.

Is it worth upgrading to a high-efficiency AC in Florida?

Yes. In Florida, your AC runs 8 to 10 months per year. Upgrading from a 10 SEER unit to a 16 SEER2 unit can cut your cooling costs by 30 to 40 percent. Many homes here from the 1970s to 2010s often have older, less efficient systems, making the upgrade impact even bigger.

Do you offer financing for AC installation in Keystone?

Yes, we offer flexible financing for Keystone homeowners. Plans include rates from 0% APR and a $0 down payment for qualified buyers. We work with multiple lenders so we can find an option that fits your budget. No one in Keystone should suffer through a Florida summer because of upfront costs.

Should I repair or replace my AC system?

Use the $5,000 rule: multiply the age of your system by the repair cost. If it exceeds $5,000, replace it. In Keystone, where systems from the 1970s to 2010s are now 10-20 years old, many homeowners are hitting that threshold. Also consider that older units often use R-22 refrigerant, which is phased out and expensive to recharge. A new system will lower your TECO bill and come with a full manufacturer warranty.

What is SEER2 and why does it matter?

SEER2 measures how efficiently an AC converts electricity into cooling. Higher SEER2 means lower operating costs. The minimum for new installations in Florida is 14.3 SEER2. We recommend 16 SEER2 or higher for Keystone homes because the energy savings are significant given Florida’s long cooling season. Keystone homeowners on TECO often see the biggest bill reduction from an efficiency upgrade.

Do I need a permit for AC installation in Keystone?

Yes, AC installations in Keystone require a Hillsborough County building permit and inspection. We handle all the permitting paperwork as part of our installation service. Our license (CAC1819196) is current and in good standing with the state of Florida. Skipping the permit can void your warranty and create problems when you sell your home.

How long should a new AC system last in Florida?

ENERGY STAR suggests considering replacement once a heat pump or air conditioner is more than 10 years old; a well-maintained system in Florida can run longer, and skipped tune-ups shorten its life. Keystone’s heat, humidity, and inland heat and dust are hard on equipment, so regular maintenance is critical. Our Home Therapy Club includes two tune-ups per year, priority scheduling, and discounts on repairs to help your new system last as long as possible.

Do you serve all of Keystone including Steeplechase, Eagle Trace, and Stillwater?

Yes, we serve every Keystone neighborhood in ZIP 33556, including Steeplechase, Eagle Trace, and Stillwater, plus the streets near Lake Keystone, the Suncoast Trail, and Brooker Creek Preserve. Our techs drive out from our Tampa shop via Suncoast Parkway north to Lutz-Lake Fern Road west.

Can you do same-day AC installation in Keystone?

Same-day full installation is rare because Hillsborough County requires a mechanical permit and Keystone installs often need a custom line-set length that we order to spec. Same-day FREE diagnostic estimate is standard. Most Keystone full installs schedule within 5 to 7 days once the permit clears and the equipment plus line set arrive at our warehouse.

Does my Keystone home need a longer line set than the standard?

Often yes. Keystone 1-acre and larger lots often have the condenser pad 50 to 80 feet from the indoor air handler, which is at the upper end of standard line-set lengths. Line sets sized for shorter runs cause low-charge faults and compressor strain. We measure the exact run distance during the FREE estimate and specify the correct line-set diameter (often 7/8 inch suction line) plus add an oil trap for vertical lifts over 20 feet.

Do you handle warranty work and permits for AC installation in Keystone?

Yes. Hillsborough County requires a mechanical permit on any AC install. We pull the permit at the Land Use Hub on Falkenburg Road, schedule the inspection, and meet the inspector. We honor Goodman, Daikin, Carrier, Lennox, and Trane manufacturer warranties when we install or service the equipment, plus a labor warranty that depends on the system (Value 1 year, Premium 5 years, Daikin Elite 12 years).

Is the Keystone AC installation estimate really free?

Yes. The in-home estimate is FREE in Keystone. No diagnostic fee, no service-call fee for AC installation estimates. If you decide not to proceed, you owe nothing.

Where we work near Keystone

We serve the three counties of Tampa Bay from our shop at 1408 W Linebaugh Ave in Tampa.

Hillsborough County

Tampa, Brandon, Riverview, Carrollwood, Town ’n’ Country, Plant City, Ruskin, Sun City Center, Apollo Beach, Valrico, Lutz, Seffner

Pinellas County

St. Petersburg, Clearwater, Largo, Dunedin, Oldsmar, Safety Harbor, Pinellas Park, Seminole, Tarpon Springs, Treasure Island, St. Pete Beach

Pasco County

Wesley Chapel, Land O’ Lakes, New Port Richey, Holiday, Hudson, Trinity, Zephyrhills, Dade City

All 62 cities where we do AC installation

Also Serving These Areas

Same-day ac installation across Tampa Bay

📍 Bloomingdale

📍 Northdale

📍 Safety Harbor

📍 Seffner

📍 Sun City Center

📍 Ybor City

📍 Tierra Verde

📍 Wimauma

📍 Zephyrhills

Our other services (31)

Air Conditioning Services

We specialize in providing top-of-the-line cooling solutions for your home or business. From Air Conditioning installation and maintenance to repair and replacement, we offer a comprehensive range of services to ensure your air conditioning system runs smoothly all year round.

Heating Services

We specialize in providing reliable, energy-efficient heating solutions for Tampa Bay homes. Whether you’re dealing with an emergency breakdown or planning a full system upgrade, Home Therapist is here with expert installation, repair, and maintenance services.

Ductwork and Air Quality Services

We help Tampa Bay homeowners improve indoor air quality, lower energy bills, and extend HVAC system life with professional ductwork and air treatment services. From duct sealing to air purification, we do it all.

Plumbing Services

Explore our full range of plumbing services by category. From leak detection and repiping to fixture installations and water heater solutions, we’ve got Tampa Bay’s HVAC needs covered.

See every city and ZIP code we serve

Ready for Your FREE Keystone AC Installation Estimate?

No diagnostic fee. No high-pressure sales. Full ACCA Manual J, correctly sized line set, attic air handler protection plan, and fixed-price written quote before any work starts.

Open 24 hours, 7 days a week. You approve the price before any work starts.

Hablamos español. Llámenos o envíenos un texto al (813) 343-2212.

Licensed CAC1819196 (HVAC) | CFC1431159 (Plumbing) | Serving Keystone since 2017