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Central AC, ductless mini-splits, or multi-zone systems - we select, size, and install the right cooling solution for your specific home layout, electrical capacity, and budget in Hillsdale.
AC Installation Specialists
The decision between central air conditioning, a ductless mini-split, and a multi-zone mini-split system is not just about price. It is about your home's layout, your existing ductwork condition, your electrical panel capacity, and how you actually use each area of the house. Getting this choice wrong means spending money on equipment that works harder than it should, or that leaves certain rooms perpetually uncomfortable. At All Year HVAC, we start every AC installation conversation with a site assessment designed to surface these factors before anyone opens a catalog.
Central air conditioning is the right answer when your home already has an existing duct system in reasonable condition. Even then, we walk every supply and return run before the install date. Undersized return air ducts are the most common problem we inherit from previous installs, and they starve even a new high-efficiency system of the airflow it needs. When we find duct issues, we address them as part of the installation scope rather than leaving you to discover performance problems six months later.
Ductless mini-splits are the right answer when the home lacks ductwork, when you are adding conditioned space like a finished garage or a room addition, or when you need independent temperature control for a room that runs much hotter or cooler than the rest of the house. Line set routing is where mini-split installs often go wrong in the hands of less experienced contractors. Refrigerant lines that are kinked, poorly insulated in attic runs, or routed without proper support develop problems early. We plan line set routing to minimize unnecessary bends, protect lines through unconditioned spaces, and maintain proper support intervals per manufacturer specs.
Electrical requirements are another area we evaluate early. Mini-splits require a dedicated circuit sized to the equipment's minimum circuit ampacity. In older Hillsdale homes, this sometimes means panel modifications or a sub-panel addition before installation day. We identify this during the site visit so you are not surprised by it on install day. Similarly, drain line installation for ductless air handlers requires careful attention to slope and termination point. An air handler that drains into an improperly sloped pan line or terminates too close to the building foundation creates moisture problems in short order.
First-run commissioning is the final step we take seriously. After installation is complete, we verify refrigerant charge using superheat and subcooling measurements rather than just connecting gauges and checking pressure. We measure supply air temperature against ambient, confirm that the drain pan and condensate line are clear and flowing correctly, and document all startup readings before leaving the job site. In Hillsdale's climate, a properly charged and commissioned AC system runs at rated efficiency from day one rather than underperforming through its first season.
AC Systems We Install
Full split-system central AC installation with indoor evaporator coil, outdoor condensing unit, refrigerant line set, and thermostat upgrade. We evaluate your existing duct system before sizing equipment and address any airflow restrictions as part of the installation. Every central AC install we complete in Hillsdale includes first-run commissioning with documented refrigerant charge verification and supply air temperature measurement.
Single-zone ductless mini-split installations for rooms, additions, garages, and areas not served by central ductwork. We plan line set routing to avoid excessive bends and insulate all lines through unconditioned attic and crawl space segments. Electrical circuit installation, condensate drain line setup, and wall or ceiling penetration sealing are all included. We commission the system at startup and confirm the drain line flows correctly before we leave.
Multi-zone mini-split installations allow one outdoor unit to serve two, three, or four indoor air handlers throughout the home, each with independent temperature control. These systems work well in homes that are adding cooling capacity in multiple rooms simultaneously. Proper outdoor unit placement and line set sizing for multi-zone configurations requires careful planning, and we handle that during the site visit so every zone performs at its rated capacity rather than being limited by undersized line sets or poor placement.
AC installations frequently require electrical work: a new dedicated circuit for the condensing unit, a proper disconnect switch within sight of the outdoor unit, or a circuit upgrade for a mini-split air handler. We handle this in-house rather than subcontracting it, which means the electrical and mechanical portions of your install are coordinated by the same crew on the same day. Panel capacity assessment is included in our site visit so any electrical work is identified before installation day.
Improper condensate drain line setup is one of the leading causes of early water damage from AC installations. We install primary and secondary drain lines with correct slope, proper trap configuration for air handler installations, and appropriate termination points that keep moisture away from the foundation and exterior walls. In attic-mounted installations in Hillsdale, a properly configured secondary drain or float switch is not optional, and we include it as standard practice rather than as an upsell.
Commissioning is the systematic verification that every part of the installed system functions correctly and at rated performance. We check refrigerant superheat and subcooling against manufacturer targets, measure supply air temperature at multiple registers, verify that the condensate drain flows freely, confirm thermostat operation and staging, and document all readings on a commissioning sheet that becomes part of your equipment records. This is how we guarantee the system is performing as expected before we leave the job site in Hillsdale.
Our Advantage
We install central AC, single-zone mini-splits, and multi-zone ductless systems. Recommending the right system type for your home's specific layout and electrical capacity is the first thing we do, not an afterthought.
Refrigerant lines that are kinked, improperly supported, or inadequately insulated through attic runs cause performance problems and early failures. We plan and execute line set routing to manufacturer standards on every job.
We handle dedicated circuits, disconnects, and panel work with our own licensed staff, not a third-party subcontractor. This keeps your installation on one timeline and one communication channel.
Every AC install we complete in Hillsdale ends with a documented commissioning report showing refrigerant charge readings, supply air temperatures, and drain line verification. You know it works before we leave.
The Process
We visit your home to assess duct condition, electrical panel capacity, available space for equipment, and the specific cooling needs of each area. This determines which system type and size is right before we quote anything.
We select the right equipment, plan the line set routing for mini-splits, identify any electrical or duct work needed, and give you a complete scope of work with no hidden items added later.
Our crew handles mechanical installation, refrigerant line set routing, electrical circuit work, drain line setup, and all penetrations and sealing in a single visit. The job site is cleaned before we leave.
We run the full commissioning checklist, verify refrigerant charge, measure supply air temperature, confirm drain flow, and give you a commissioning report with your equipment records at job closeout.
What Customers Say
"We had a room addition that the central system could never cool adequately. All Year HVAC assessed it, recommended a ductless mini-split rather than extending the existing duct system, and explained exactly why. The line set routing looks clean and professional, and the room is comfortable for the first time. They also identified a drain line issue on the existing unit during the same visit."
"They found that my panel did not have capacity for the mini-split circuit I needed during the site visit, which I did not know going in. They handled the panel upgrade the same day as the AC installation. No separate contractor, no coordination headaches. Commissioning at the end showed everything performing at spec. Worth every dollar."
"First AC installation where the contractor actually showed me the commissioning numbers before packing up. Superheat reading, subcooling, supply air temperature - all written down and in my file. That level of documentation tells you a company is serious about what they install. Very happy with the entire process in Hillsdale."
Frequently Asked Questions
Where We Work
Our AC installation crews serve Hillsdale and the surrounding communities across Hillsdale, NY. We are familiar with local permitting requirements, inspection schedules, and building code specifics that affect AC installations differently by jurisdiction.
Call us to confirm availability and scheduling for your specific location in Hillsdale, NY. We offer priority scheduling for homes without working air conditioning during heat events.
Schedule a Site Visit: +1-866-805-8548
Call All Year HVAC for an expert site assessment. We identify the right system type, plan the installation correctly, and commission it fully before we leave.
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