Heating and cooling a home right takes the right tools and a methodical approach, and that is exactly what Lynbrook HVAC Company brings to every job in Lynbrook and across Nassau County. Whether you own a single-family home, manage a rental property, or run a commercial space, the core work is the same: heating repair, cooling repair, full system installation, and seasonal maintenance, all handled under one number. Residential HVAC. Commercial HVAC. One number for both.
When you call, the diagnosis is explained on every call before anything is scheduled. You know what the visit covers and what it costs before anyone shows up at the door.
Call (363) 999-8289 for a quote.
Choosing the right HVAC fix is easier than it sounds, especially when someone who knows the trade walks you through it on the phone. We handle the full range of everyday heating and cooling work: AC repair and service, heating and furnace repair, heat pump repair and installation, full system installation and replacement, thermostat and smart-control installation, ductwork repair and sealing, indoor air quality, and seasonal maintenance and tune-ups.
On the diagnostic side, that means refrigerant leak checks, airflow and uneven-temperature troubleshooting, air handler and blower service, and efficiency assessments that tell you whether a repair or a replacement makes more sense for your situation. The rate is given on the call, before anything is scheduled, and what the visit covers is explained up front.
We'll explain the diagnosis before any work is authorized.
A no-cool call in the middle of a Nassau County summer is not something to sit on. When the house is not cooling, the AC is running but blowing warm air, or temperatures swing from room to room, the visit starts with a full system assessment: refrigerant level and leak check, condenser and evaporator coil inspection, and a blower and airflow evaluation. The system is tested before the visit ends, so you know what was found and what was done before the technician leaves.
Some repairs make sense. Others, on a unit that is aging, running on a phased-out refrigerant, or losing efficiency season over season, do not. When replacement is the better call, the installation process starts with a load calculation to size the new equipment correctly for the space. An undersized unit runs constantly and never catches up. An oversized one short-cycles and leaves the air humid. Getting the sizing right is part of the job scope, not an afterthought.
We'll get the repair scoped and scheduled.
A no-heat call in January on Long Island is an emergency, and we treat it that way. When the furnace is not heating, the visit covers the heat exchanger, ignition system, burner operation, and airflow through the cabinet and distribution system. A furnace tune-up follows the same checklist and catches the small problems before they become the reason you are without heat on the coldest night of the year. When a furnace is beyond repair, we handle the replacement and installation from equipment selection through startup.
Heat pumps handle both heating and cooling, which means they run year-round and need attention on both sides of the calendar. A heat pump not heating in winter and a heat pump not cooling in summer often trace back to refrigerant charge, defrost cycle issues, or airflow restrictions, and the diagnosis tells you which. Seasonal tune-ups keep the system running at rated efficiency. For homeowners looking to move away from fossil-fuel heating, heat pump installation is a serious path worth talking through.
Call us and we'll walk you through your options.
Nassau County sits at the intersection of old housing stock, humid summers, and cold winters. A lot of the homes here were built before central air was standard, and many still run on systems that were installed decades ago. That combination drives three specific types of work more than almost anything else in this area.
Boilers are common throughout Lynbrook's older neighborhoods, and cast-iron steam and hot-water radiator systems are still the primary heat source in a large share of the housing stock here. Servicing these systems means more than a filter swap. It means checking operating pressure, testing zone valves and circulator pumps, bleeding radiators that are not heating evenly, and inspecting the heat exchanger and controls. A boiler that is losing pressure or cycling erratically on a cold Long Island night needs a proper diagnosis, not a guess. We handle both repair and full boiler replacement when the system has reached the end of its service life.
The Northeast carries the overwhelming share of oil-heated homes in the country, and Nassau County is no exception. The reasons homeowners here are moving away from oil vary: fuel price volatility, the cost of maintaining an aging oil system, and the availability of natural gas on most streets in the area. On the HVAC side, a conversion means removing the old oil equipment, connecting the new unit, and assessing the existing ductwork to make sure it can handle the new system's airflow requirements. For homeowners who want to go fully electric, a heat pump conversion is the alternative path. Both options are worth a conversation before any work is scheduled.
Older homes without ductwork, room additions, converted attics, and detached garages all share the same problem: there is no practical way to extend central air to them. A ductless mini-split solves that without major construction. Installation involves mounting the indoor air handler, running the refrigerant line set to the outdoor unit, and setting up the zone controls. One outdoor unit can serve multiple indoor heads, which means a whole floor or a whole addition can be conditioned independently. Commercial rooftop units are covered as well as residential, so property managers with mixed-use buildings have a single number for both.
When the heat goes out in February or the AC quits on the hottest day of August, the problem does not wait for a convenient time slot. We take emergency calls every day, 8:30 AM to 10:00 PM. When you call, the job is scoped on the phone: what the system is doing, what it was doing before it stopped, and what the visit will cover. The rate is given before anything is scheduled.
Heating checked. Cooling checked. Airflow measured.
We'll take the details and get it scheduled.
You shouldn't have to chase a contractor for answers, especially when a piece of commercial equipment is down and a business is affected. We cover the commercial side across Lynbrook and Nassau County: office buildings, retail spaces, restaurants, and small businesses that need rooftop unit repair and service, commercial furnace and heat pump repair, and commercial AC repair. Rooftop units require their own service approach, and we handle both the diagnostic work and the repair without treating it as a residential call with a bigger unit.
For property managers who need regular maintenance on multiple systems, commercial HVAC inspection and tune-up work is part of what we do. The diagnosis is explained before any work begins, and the scope is confirmed before parts are ordered. The system is tested before the visit ends, so you have a clear record of what was done.
Leaky ductwork shows up as uneven temperatures, rooms that never quite reach the set point, higher energy bills, and dust that reappears faster than it should. Duct sealing starts with an inspection to find where conditioned air is escaping, followed by sealing at the joints and connections. Where sections are damaged beyond sealing, replacement is the right call.
A thermostat that is not reading temperatures correctly, failing to trigger the system, or simply too old to communicate with newer equipment is worth replacing. Installation covers the wiring, compatibility with the existing heating and cooling equipment, and a programming walkthrough so the new controls are set up correctly from day one.
Making comfort simple is most of what the job is, and air quality is part of that. Whole-home air purifiers, UV air purifiers, HEPA filtration systems, and whole-home humidifiers and dehumidifiers all fall within the scope of what we install and service. Humidity control matters year-round in Nassau County's climate: summers bring the kind of sticky, heavy air that makes a correctly sized and properly dehumidifying system worth every dollar, and dry winter air has its own set of comfort and health implications.
A quick tune-up and a full system swap are two different jobs, but both start with the same principle: know what you have before the season demands it. Pre-season maintenance catches the problems that turn into no-heat and no-cool calls. An AC tune-up covers coil cleaning, filter inspection, refrigerant level check, and airflow measurement. A furnace tune-up covers ignition testing, burner operation, heat exchanger inspection, and airflow through the distribution system.
Scheduling is straightforward. We are available every day, 8:30 AM to 10:00 PM, which means a tune-up before the first heat wave or the first cold snap does not require rearranging your week around a narrow window.
Pricing on HVAC work varies based on what the job actually is: a repair on an existing system, a full replacement, a new installation, or a conversion from one fuel type to another. What does not vary is when you get the number. The rate is given on the call, before anything is scheduled.
What drives cost differences is the scope: the type of system, the size of the equipment, the condition of the existing ductwork, and whether parts need to be ordered. None of that is a mystery. If you have questions about what a particular job typically involves, ask on the call and you will get a straight answer. The visit is scoped before it starts, and the price is confirmed before anyone heads out.
Lynbrook is the primary service area, and we cover the surrounding communities throughout Nassau County as well. Nearby towns we serve include Valley Stream, Rockville Center, Malverne, Hewlett, Baldwin, Oceanside, East Rockaway, and Freeport. Both residential and commercial properties across the area are covered, from single-family homes to multi-unit buildings and commercial spaces.
We cover the full range of residential and commercial HVAC work, including furnace repair and service, boiler repair and replacement, heat pump repair and installation, central air repair and installation, ductless mini-split installation, ductwork repair and sealing, thermostat and smart-control installation, indoor air quality systems, and seasonal tune-ups. We also handle oil-to-gas and heat pump conversions, which come up often in Nassau County's older housing stock. Emergency calls are taken every day from 8:30 AM to 10:00 PM.
Call (363) 999-8289 and we will walk through what the job involves before anything is scheduled.
Yes. We cover commercial rooftop units, commercial furnace and heat pump repair, commercial AC repair, and full commercial HVAC installation across Lynbrook and Nassau County. Property managers and building owners get the same process as residential customers: the job is scoped on the call, the price is confirmed before the visit is booked, and the system is tested before the visit ends. One number handles both sides.
Call (363) 999-8289 and describe what the system is doing: whether it is not turning on at all, running but not heating or cooling, or cycling on and off without finishing.
That information helps scope the visit on the phone before anyone comes out. We take emergency calls every day from 8:30 AM to 10:00 PM, covering both residential and commercial properties in Lynbrook and the surrounding area. The price is given before the visit is dispatched.
Call (363) 999-8289 during our hours, every day from 8:30 AM to 10:00 PM.
On the call, we go through what the system is doing, what type of equipment is in the property, and what the job is likely to involve. The rate is given on the call, before anything is scheduled, and it covers what the visit includes. There is nothing to settle after the fact because the scope and the price are confirmed before the work starts.
It helps to know the type of system in the property, whether it is a furnace, boiler, heat pump, or central air unit, along with the approximate age of the equipment if you know it. Describe what the system is doing and when the problem started. If there are any error codes showing on the thermostat or control panel, have those ready as well. That information lets us scope the visit accurately and give you a price on the call rather than after someone arrives.
The price covers the visit itself and what was agreed on the call: the diagnostic work, the repair or service that was scoped, and a full system test before the technician leaves. If the job turns out to be more involved than the initial description suggested, that conversation happens before additional work is authorized, not after it is already done. Parts and materials are priced separately and confirmed before they are ordered. The diagnosis is explained on every call so the quote reflects what the job actually is.
We cover Lynbrook and the surrounding communities throughout Nassau County, including Valley Stream, Rockville Center, Malverne, East Rockaway, Hewlett, Baldwin, Oceanside, and Freeport. If the property is outside those towns, call and we will confirm whether it falls within the service area. Coverage is confirmed on the call before anything is scheduled.
We are available every day from 8:30 AM to 10:00 PM, including weekends. That window covers both routine service visits and emergency calls, so scheduling around a standard weekday workday is not required.
Call (363) 999-8289 and we will confirm what is available on the schedule for your address.
The scope of the job is the main driver. A repair on an existing system, a full replacement, and a new installation each carry different costs, and within those categories the size of the equipment, the condition of the existing ductwork, and whether parts need to be ordered all affect the total. Access also matters: equipment in a tight attic or a finished basement takes more time to service than a unit in an open utility room. All of that is discussed on the call before the visit is booked.
A system that is losing efficiency season over season, requiring repeated repairs, or running on a refrigerant that is no longer readily available is worth evaluating for replacement rather than repair. The age of the equipment matters too: a unit past its expected service life is less likely to hold a repair for long. We go through the options on the call and explain what each one involves before anything is scheduled. The goal is a decision that makes sense for the property, not a repair that buys a few more months on a system that is past its useful life.
Lynbrook HVAC Company handles heating, cooling, installation, maintenance, commercial HVAC, and emergency service across Lynbrook and Nassau County. Whether you need a furnace repaired before winter, a mini-split installed in a room that has never had air conditioning, or a commercial rooftop unit serviced before the summer season, the process starts with a call.
Call (363) 999-8289 for a quote. We are available every day, 8:30 AM to 10:00 PM.
Heating and cooling cover a wide range of jobs, and the right starting point is knowing what the work actually involves. The table below lays out what each service covers, who it fits best, and one practical detail worth knowing before you call. Every price is confirmed on the phone before anything is scheduled, and the diagnosis is explained before any work is authorized.
| Service Type | What the Service Includes | Common Needs | Things to Know |
|---|---|---|---|
| Full System Installation & ReplacementMost Popular |
| A system that is past the point where repair makes sense, or a property upgrading from window units to central air | A large share of Nassau County's housing stock was built before central air was standard, so duct layout and equipment sizing vary significantly from one property to the next. |
| Heat Pump Repair & Service |
| A heat pump that is losing output in heating or cooling mode, or switching modes incorrectly | Heat pump failures in heating mode often trace back to the reversing valve or defrost controls rather than the compressor itself. |
| Boiler & Hydronic Heating Service |
| Homes in Lynbrook and Nassau County running on steam or hot-water radiator systems | Many properties in this area were built with boiler-based heating and are still running on the original distribution system. Boiler replacement is also available when repair is no longer practical. |
| AC Repair & Service |
| A system that is running but not cooling the space down to the set temperature | Short-cycling and weak airflow often trace back to different causes, so a diagnostic visit is the right first step before any parts are quoted. |
| Indoor Air Quality & Air Filtration |
| Homes dealing with excess summer humidity, dry winter air, or airborne dust and allergen concerns | Nassau County summers are humid enough to promote mold growth inside the system if moisture is not managed. Winter dryness creates a separate set of comfort and damage concerns. |
| Ductwork Repair & Sealing |
| Uneven room temperatures, higher-than-expected energy bills, or dusty air at the registers | Leaking ducts allow conditioned air to escape into attics and crawlspaces before it reaches the living space. Sealing them improves comfort without replacing any heating or cooling equipment. |
| Thermostat & Smart-Control Installation |
| A system behaving erratically, or a homeowner wanting better control over comfort and energy use | A smart thermostat wired to a heat pump requires different connections than one on a gas furnace. We confirm compatibility before installation begins. |
| Heating & Furnace Repair |
| A furnace blowing cold air, failing to start, or cycling on and off without reaching the set temperature | Nassau County winters put heating systems under sustained load, so a furnace showing intermittent problems in fall is worth diagnosing before the coldest weeks arrive. |
| Ductless Mini-Split Installation |
| Older homes with no ductwork, room additions, converted garages, or finished attics | One outdoor unit can serve multiple indoor heads, making a mini-split practical for conditioning an entire floor or several separate zones without running new ductwork. |
| Emergency HVAC Service |
| A heating or cooling system that has stopped working and the building is uncomfortable or unsafe | We take emergency calls every day from 8:30 AM to 10:00 PM. Describing what the system is doing when you call helps scope the visit before anyone is dispatched. |
| Seasonal Maintenance & Tune-Ups |
| Homeowners, landlords, and commercial property managers who want to catch problems before a breakdown | A fall tune-up covers the heating side. A spring tune-up covers the cooling side. Both end with the system run through a full cycle to confirm it is operating within normal parameters. |
| Oil-to-Gas & Heat Pump Conversion |
| Properties still running on oil-fired systems that are due for replacement or becoming expensive to operate | The Northeast carries the largest share of oil-heat homes in the country, and Nassau County reflects that. We handle the equipment and air side. The gas-line run to the unit is plumbing work handled separately. |
Call (363) 999-8289 and we will go through the details, confirm the scope, and get the right visit scheduled for your property.
(363) 999-8289