Why Sizing and SEER2 Matter
A new system is the biggest comfort decision a homeowner makes, and in a climate where the AC runs most of the year, sizing it right matters more than the brand on the box. A/C Now installs and replaces high-efficiency systems across the Treasure Coast and northern Palm Beach County, matching equipment to your actual home instead of a rule of thumb.
Cooling load isn't uniform across this region — a block home near the water in Jensen Beach gains and sheds heat differently than a two-story in Palm Beach Gardens or a ranch in Fort Pierce. We run a room-by-room Manual J load calculation before we quote, so you're not paying to over-cool or fighting hot rooms after the install. With long, humid summers this far south, right-sized high-SEER2 equipment is what protects both your comfort and your power bill — and we handle permitting and haul-away so the changeover stays clean.
Professional Installation Protocols
Complete 10-Year Warranties
Every new HVAC installation includes a 10-year manufacturer warranty on parts (with standard registration within 60 days of install).
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Ready to upgrade your home comfort? Submit your details to receive an upfront, competitive AC installation quote. We reply the same business day for requests received Mon–Fri before 5 PM.
Ductless Mini-Split Installation Across Martin County
A Martin County address can sit under any of five permitting authorities: the county itself for unincorporated land, and separately Stuart, Sewall's Point, Ocean Breeze and Jupiter Island. Requirements and inspection scheduling are not the same between them, and the address decides which set applies.
That moves a start date further than any equipment choice does, so it is established first.
They agree on one thing. A condenser is equipment left standing outdoors, so it has to carry wind loads — a rated pad or bracket, the specified fasteners, and documentation an inspector can read. A unit resting on a loose paver or strapped to a fence will not pass here, and correcting it afterwards means disturbing pipe already cut to length.
HVAC Equipment & Environmental Factors in Martin County, FL
Martin County's residential HVAC market is intentionally low-density — the county's growth management policies have kept building intensity lower than neighboring St. Lucie County, and the result is a mix of older waterfront estates, mid-century ranch homes on large lots, and newer construction in gated communities clustered around Jensen Beach and Palm City. Those building types sit at very different points in their equipment life cycle and carry very different installation considerations. We serve all of them and approach each based on what the actual structure demands, not a standard product.
Martin County HVAC permits are processed through the county building department in Stuart, which has specific documentation requirements for mechanical permit applications including load calculations on any new installation or major equipment change. The inspection cadence in Martin County is efficient for permitted residential work — typically two to three days for residential inspection scheduling — and the inspectors are thorough. We prepare complete permit packages including load calculations as standard, which avoids back-and-forth with the building department that delays jobs.
🌧️ Climate Reality Check: High Water Table & Humidity Control
Heavy summer downpours and high local water tables create extreme indoor humidity loads. We size variable-speed inverter equipment and elevated hurricane pads so the system keeps up with the humidity load, and the outdoor unit sits above standing water.
Martin County's building permit process for HVAC replacements requires a Notice of Commencement and a county-issued mechanical permit — we pull the permit, schedule the inspection, and provide the final signed inspection card to the homeowner as part of every installation. Stuart, the county seat, has strict historic district guidelines for Flagler Avenue and adjacent blocks: equipment must not be visible from the street facade, which often requires creative placement or sound-attenuating screening that meets both HOA aesthetics and required clearance minimums. Palm City's South Fork corridor and Jensen Beach's Indian River Lagoon waterfront properties represent the two poles of Martin County installation complexity — Palm City requires elevation assessment and flood-zone pad specifications; Jensen Beach requires coastal-spec coatings and titanium-option heat exchangers for the most exposed positions.
Frequently Asked AC Installation Questions
Common questions about AC replacement, SEER2, warranties and permits.
Our Martin County home is a 1965 CBS ranch with original interior walls — we can't run new ductwork without major disruption. What are our options for a full HVAC replacement?
You very likely will not need to. In most 1965 CBS ranch homes the distribution already runs overhead — an attic trunk with branch runs dropping into ceiling registers — so opening walls is off the table from the start. What we do first is test the existing ductwork for static pressure and leakage, because a system sized to leaky ducts will be sized wrong once they are sealed. Where the runs are sound, we seal and re-insulate them and match the replacement equipment to the duct's measured capacity. Where the trunk is undersized or crushed, it can almost always be reworked in the attic without touching finished ceilings or interior walls. You get the duct findings before you choose equipment, so the quote reflects the real scope rather than a surprise partway through.
Does Martin County require a permit for a like-for-like residential HVAC replacement, or only for new installations?
Martin County requires a mechanical permit for all residential HVAC replacements, including like-for-like equipment swaps. The permit triggers a final inspection after installation, which protects the homeowner by creating an official record that the work was performed to code. We handle the permit application and inspection scheduling as part of every installation — the homeowner doesn't need to contact the building department directly.
Does A/C Now LLC handle the building permit process?
Yes. We handle the entire local municipal permitting process for your new AC installation. The state of Florida requires building permits and inspections for all HVAC changeouts to ensure safety, structural wind load limits, and code compliance. We file permits in municipalities from Palm Beach Gardens and Jupiter to Stuart and Port St. Lucie, and coordinate inspections.