Expert Heating & Cooling in Locust Valley, NY
Nassau County • 11560
Locust Valley homeowners choose us for premium HVAC services befitting this prestigious Gold Coast community's historic estates and luxury properties. · Free estimates · Financing available
What happens when you book in Locust Valley
Three simple steps from first click to a comfortable home — no surprises, no fees, no obligation.
1. Book online or call
Pick a time that works for you — same or next-day slots across Locust Valley. No pushy phone tag.
2. Free in-home estimate
A senior tech walks your mechanical spaces, runs a Manual J load calc, and hands you a written, itemized fixed-price quote. Zero pressure.
3. Review options and schedule
Compare the written scope, available financing, permit responsibility, and warranty terms before choosing an installation date.
What HVAC in Locust Valley Actually Looks Like
Honest notes from technicians who service Locust Valley every week — housing stock, the issues we see most, and what permitting looks like here.
Housing Stock in Locust Valley
Two very different Locust Valleys share one ZIP code. Out in Lattingtown and Matinecock it's classic Gold Coast: large 1910s–30s estates and shingle-style country homes on 2–10+ acre lots, many still carrying their original carriage houses, gatehouses, and pool pavilions. The village core is more intimate — 1900s village homes and modern customs in the 2,500–4,000 sq ft range.
Common HVAC Issues in Locust Valley
- Original 1910s–30s steam and hot-water boilers — restoration vs. high-efficiency gas conversion vs. heat pump hybrid is the typical conversation
- Multi-building VRF layouts that put main house, guest cottage, and pool house on one zoned system
- Lattingtown waterfront homes with salt-air condenser exposure from Long Island Sound
- Historic-character properties with limited mechanical chase space — high-velocity and ductless solutions are common
- Line sets of 100–200+ ft between buildings on the multi-acre estates — inverter equipment and careful design are prerequisites
Neighborhood Notes
Lattingtown and Matinecock are the deepest estate work — multi-zone VRF, modulating systems, and waterfront salt-air specs. The Locust Valley Village core near the train station and Piping Rock Club has more modest historic and custom homes with simpler replacements.
Permits & Local Code
Permitting depends on which Locust Valley you're in: the hamlet itself files with the Town of Oyster Bay only, while Lattingtown and Matinecock — both incorporated villages — add a separate village permit on top of the town's. Home Comfort rebates from PSEG-LI cover qualifying heat pump installs.
Climate & Microclimate
Waterfront installs in Lattingtown pick up salt air off Long Island Sound; everywhere else the story is trees — heavy mature cover that moderates summer temperatures while steadily loading condenser coils with leaf and pollen debris.
Three ways to save in Locust Valley
Book a visit, claim free furnace with your new ac system, or lock in the Home+ Comfort plan — whichever fits your home best.
Priority HVAC Services in Locust Valley
Fast response times, expert technicians, and guaranteed satisfaction
Emergency HVAC Services
24/7 emergency repairs for heating & cooling systems
Heating Services
Furnace repair, heat pump installation & maintenance
Cooling Services
AC installation, repair & maintenance services
Air Quality Services
Indoor air quality testing & improvement solutions
Get a free HVAC estimate in Locust Valley
Free in-home estimate. No obligation. A senior tech will call within 30 minutes with your fixed-price quote and financing options.
HVAC Services in Locust Valley
Explore our specialized HVAC services with detailed information for Locust Valley homeowners
Furnace Repair
in Locust Valley
No Heat Emergency
in Locust Valley
Furnace Installation
in Locust Valley
Heating Repair
in Locust Valley
Furnace Tune-Up
in Locust Valley
Furnace to Heat Pump Conversion
in Locust Valley
Hybrid Heating System
in Locust Valley
Heat Pump Repair
in Locust Valley
Emergency Heating Service
in Locust Valley
Heating Oil Service
in Locust Valley
Boiler Repair
in Locust Valley
AC Repair
in Locust Valley
AC Installation
in Locust Valley
AC Tune-Up
in Locust Valley
Boiler Installation
in Locust Valley
Heat Pump Installation
in Locust Valley
Mini-Split Installation
in Locust Valley
Oil to Gas Conversion
in Locust Valley
Need Help Choosing a Service?
Our HVAC experts are here to recommend the right solution for your Locust Valley home.
Proudly Serving Locust Valley and Surrounding Areas
Neighborhoods We Serve
- Locust Valley Village
- Lattingtown
- Matinecock
- Bayville borders
Local Landmarks
- Locust Valley Train Station
- Piping Rock Club
- Glen Cove Road
- Locust Valley Library
- Lattingtown Harbor
Nearby Cities
HVAC Permit Requirements in Locust Valley
Planning an HVAC installation or replacement in Locust Valley? Understanding local permit requirements is essential. Skipping permits can void warranties, create insurance issues, and cause problems when selling your home.
Jurisdiction: Town of Oyster Bay
Installing in Town of Oyster Bay Every Week
A local team that knows how homes here are built — and what your replacement actually needs.
- Full scope in writing before you sign
- Manual J load calculation
- 100% code-compliant
Heating Service in Locust Valley, Answered
Who offers emergency heating service in Locust Valley?
We do. No-heat calls in Locust Valley reach a live dispatcher 24/7, including nights and weekends, and dispatch confirms the next open arrival window for your address before you commit. Gas and oil furnaces, steam and hot-water boilers, and heat pumps are all covered.
What does furnace repair cost in Locust Valley?
A diagnostic visit gets you a written cause and a fixed repair price before any work starts — common Locust Valley repairs run from a simple igniter or flame sensor up to a control board or inducer motor. You approve the number first, and we show the repair-versus-replace comparison when the system is near end of life.
How fast can you handle heating repair near me in Locust Valley?
Same-day appointments are usually available for heating and no-heat calls across Nassau County, with 24/7 emergency dispatch outside business hours. Call (516) 259-1191 and we will tell you the real arrival window for Locust Valley before you book.
Do you handle heating installation and replacement in Locust Valley?
Yes — furnaces, boilers, and heat pumps, quoted after a Manual J load calculation rather than a guess from the old nameplate. Installation estimates in Locust Valley are free, financing is available, and qualifying heat pump work can pair with current PSEG-LI Home Comfort rebates.
Heating services in Locust Valley
No heat right now? Call (516) 259-1191 and dispatch confirms current availability for your address.
AC Repair & Installation in Locust Valley, Answered
Who does AC repair in Locust Valley?
We do. Air conditioning repair calls in Locust Valley reach a live dispatcher, and you get the next open arrival window for your address before you commit. Central air, ductless mini splits, and heat pumps running in cooling mode are all covered, including nights and weekends.
What does air conditioning repair cost in Locust Valley?
A diagnostic visit gets you the written cause and a fixed repair price before any work starts — Locust Valley repairs range from a capacitor or contactor up to a blower motor, coil, or refrigerant leak repair. You approve the number first, and we show the repair-versus-replace math when the system is near end of life.
Do you handle AC installation and central air replacement in Locust Valley?
Yes. New central air, high-efficiency heat pumps, and ductless mini splits are sized with a Manual J load calculation instead of matching the old nameplate. Installation estimates in Locust Valley are free, financing is available, and qualifying heat pump work can pair with current PSEG-LI Home Comfort rebates.
How do I pick an HVAC contractor in Locust Valley?
Ask for the load calculation, the exact model numbers, the line-set and electrical plan, and the labor warranty in writing — installation quality decides how a system performs far more than the brand on the box. We serve Locust Valley and the rest of Nassau County with insured, EPA 608-certified crews and written pricing on every visit.
Cooling services in Locust Valley
AC not cooling? Call (516) 259-1191 and dispatch confirms current availability for your address.
Heating & AC Installation in Locust Valley, Answered
Who installs new furnaces and heating systems in Locust Valley?
We do. Home+ installs furnaces, boilers, heat pumps, and full HVAC systems across Locust Valley, and the installation estimate is free. A comfort advisor measures the home, reviews your ductwork and venting, and gives you written equipment options with model numbers instead of a verbal ballpark.
How much does heating or AC installation cost in Locust Valley?
Your price depends on system type, capacity, and what the existing ductwork, venting, and electrical need — not on a per-ton guess. You get itemized good, better, and best options in writing with the installed price, the labor warranty, and any qualifying PSEG-LI Home Comfort rebate applied before you decide.
How is the new system sized for my Locust Valley home?
With a Manual J load calculation, not the nameplate on the old unit. Locust Valley housing stock ranges from older capes and colonials to newer additions, and oversized equipment short-cycles, runs humid, and fails early. Correct sizing is also required for the flat PSEG-LI heat pump rebate.
How long does a new system installation take in Locust Valley?
Most furnace, AC, or heat pump changeouts in Locust Valley are a one-day install, with larger jobs or added ductwork running two days. Your crew protects the work path, tests and commissions the system before leaving, registers the manufacturer parts warranty, and hauls away the old equipment.
Should I repair or replace my system?
If the equipment is past roughly 15 years, uses discontinued refrigerant, or the repair approaches a meaningful share of replacement cost, replacement usually wins. We show both numbers side by side on the same visit so the choice is yours — we serve Locust Valley and the rest of Nassau County with insured, EPA 608-certified crews and written pricing.
Installation services in Locust Valley
Ready for a free installation estimate? Call (516) 259-1191 and we will confirm the next available survey window for your address.
Water Heater Repair & Replacement in Locust Valley, Answered
Who repairs and replaces water heaters in Locust Valley?
Home+ Air and Heat does. We diagnose and replace gas, electric, hybrid heat pump, and tankless water heaters throughout Locust Valley, and you get the repair or replacement price in writing before any work starts.
I have no hot water in Locust Valley — what should I check first?
On a gas tank, confirm the gas valve is on and the pilot or igniter is lit; on an electric tank, check the breaker and the reset button on the upper thermostat. If water is pooling around the base, shut the cold supply and call us — a leaking tank cannot be repaired and should be replaced before it floods the space.
How much does water heater replacement cost in Locust Valley?
Price depends on fuel type, capacity, and what the venting, gas line, and water connections need to meet code. A standard 40- or 50-gallon tank swap sits well below a tankless or hybrid heat pump conversion, and we quote the installed number — equipment, labor, disposal, and warranty — as one written figure.
What size water heater does my Locust Valley home need?
We size on how many bathrooms and occupants you have, not the label on the old tank. Most Locust Valley homes with one or two baths run a 40- or 50-gallon tank, larger households step up to 75 gallons, and a tankless or hybrid unit works when you want continuous hot water or lower operating cost.
Is a tankless or heat pump water heater worth it here?
A hybrid heat pump water heater cuts electric operating cost sharply and can qualify for a PSEG-LI instant rebate when the install meets program requirements. Tankless suits homes with adequate gas supply and venting. We show you the tank, tankless, and hybrid numbers side by side so the tradeoff is clear.
How fast can you get to my Locust Valley address?
Water heater failures are treated as urgent because of the water damage risk. Call and we confirm the next available window for your Locust Valley address; we serve Locust Valley and the rest of Nassau County with insured, EPA 608-certified technicians.
Water heater services in Locust Valley
No hot water or a leaking tank? Call (516) 259-1191 and we will confirm the next available window for your address.
HVAC Service by Locust Valley Neighborhood
Home+ Air and Heat serves Locust Valley Village, Lattingtown, Matinecock, Bayville and the rest of Locust Valley, Nassau County — heating, cooling, and water heater work with written pricing.
Which Locust Valley neighborhoods do you cover?
We run the same service across every section of Locust Valley, including Locust Valley Village, Lattingtown, Matinecock, Bayville. Dispatch treats them as one Locust Valley zone, so the response window and the pricing are identical no matter which side of town you are on.
Do you do AC repair and installation in these areas?
Yes. Central air conditioner repair, condenser and air handler replacement, ductless mini-split installation, and full central AC installations are all handled in Locust Valley Village, Lattingtown, Matinecock, Bayville by insured, EPA 608-certified technicians on our own payroll.
What about furnace and boiler work?
We repair and replace gas and oil furnaces, steam and hot-water boilers, and heat pumps throughout Locust Valley and its bordering hamlets. Older village blocks lean toward boiler and high-velocity work; postwar sections are usually conventional forced air.
Is emergency service available in every section?
Yes. No-heat and no-cooling calls from anywhere in Locust Valley and the surrounding Nassau County neighborhoods go into the same emergency queue, and we confirm the next available window on the phone before you commit.
Do you charge more for one neighborhood than another?
No. The $199 residential diagnostic and every repair or installation price is the same across Locust Valley, and you get the number in writing before work begins. What changes between neighborhoods is the equipment approach, not the pricing.
Services available across Locust Valley
Not sure your street counts as Locust Valley? Call (516) 259-1191 and we will confirm coverage for your exact address.
HVAC Brands We Install & Service in Locust Valley
Trane, Mitsubishi Electric, and Bosch installations across Locust Valley, Nassau County — plus repair and maintenance on nearly every other residential brand already in local homes.
Trane in Locust Valley
Our default for full central air and furnace replacements — strongest parts availability on Long Island and the platform our installers know best.
Mitsubishi Electric in Locust Valley
Ductless and cold-climate heat pump work: single-zone heads, multi-zone systems, and Sandy-era homes where ductwork is not practical.
Bosch in Locust Valley
Inverter heat pumps and air handlers where quiet operation and tight side-yard clearances matter.
Brands we repair and maintain in Locust Valley
Which brands do you install in Locust Valley?
We lead with Trane, Mitsubishi Electric, and Bosch on new installations in Locust Valley. That is a deliberate short list — stocking parts and training our own installers deeply on a few platforms produces better Locust Valley installs than carrying a dozen badges.
Do you repair and service brands you did not install?
Yes. Locust Valley repair and maintenance calls cover Carrier, Lennox, Goodman, American Standard, York, Rheem, Bryant, Amana, and most other residential equipment, whoever installed it. The $199 diagnostic and written repair pricing are the same regardless of brand.
Does the brand or the installation matter more?
The installation. Sizing from a Manual J load calculation, duct static pressure, refrigerant charge, and condenser placement decide how a system performs in a Locust Valley home far more than the nameplate. A well-installed mid-tier system beats a badly installed premium one every time.
Can you match my existing Locust Valley system when only one part fails?
Usually yes. If your condenser or furnace is repairable we quote the repair first, in writing. If a matched replacement is the better value we show both numbers side by side — repair cost, replacement cost, and any Nassau County rebate or PSEG Long Island incentive you qualify for.
Not sure what brand is in your basement? Call (516) 259-1191 and read us the model number — we will tell you what parts we stock for it.
Emergency HVAC Repair in Locust Valley
No heat, no cooling, or something that smells wrong in Locust Valley, Nassau County — here is exactly how an urgent call works, what it costs, and what you can check first.
Start here by symptom
What counts as an HVAC emergency in Locust Valley?
No heat in freezing weather, no cooling during a heat advisory, a burning or gas smell, water pouring from an air handler, a tripping breaker, or a carbon monoxide alarm. Those get dispatched ahead of routine work. A noisy fan or a thermostat you want reprogrammed is a normal appointment, and booking it that way costs you less.
Do you take after-hours and weekend calls in Locust Valley?
Yes — evenings, weekends, and holidays are covered for no-heat and no-cool calls in Locust Valley and the rest of Nassau County. We do not promise a fixed arrival window over the phone. When you call we tell you honestly where you sit in the queue that day so you can decide whether to wait or book the next morning.
What does an emergency AC or heating repair cost here?
The diagnostic is $199 and it is waived for Home+ Comfort members. Every repair is priced in writing before we start, so you approve the number, not an hourly meter. Common Locust Valley repairs land between $250 and $900 — capacitors, contactors, blower motors, ignitors, condensate pumps, and refrigerant leak work.
What can I check before you arrive?
Confirm the thermostat is calling and has fresh batteries, check the furnace or air handler switch on the wall, look at the breaker, and replace a clogged filter. For no cooling, clear leaves off the outdoor condenser. If you smell gas, leave the house first and call the gas utility, then call us.
Will you repair my system or push a replacement?
On an emergency call the goal is heat or cooling back on tonight. If the system is repairable we repair it. If it is failed beyond a safe repair we show the repair number and the replacement number side by side, including any PSEG Long Island rebate you qualify for, and you decide with both figures in front of you.
Losing heat or cooling right now? Call (516) 259-1191 and describe what the system is doing — we will tell you whether it is a tonight call or a next-morning appointment.
Visit Our Jericho Office
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Home+ Air & Heat
55 Jericho Tpke Suite 203, Jericho, NY 11753
Frequently Asked Questions
Real answers for Locust Valley homeowners, based on the homes and systems we work on every week.
Nearby Towns We Serve Near Locust Valley
We also provide expert heating and cooling services to these nearby communities
Why Locust Valley Homeowners Choose Home+ Air & Heat
We've been serving Locust Valley families with expert HVAC services for years. Our commitment to quality, reliability, and customer satisfaction sets us apart.