Expert Heating & Cooling in Old Westbury, NY
Nassau County • 11568
Old Westbury homeowners trust our expert HVAC technicians for premium heating, cooling, and air quality services in this distinguished Nassau County community. · Free estimates · Financing available
What happens when you book in Old Westbury
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 Old Westbury. 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 Old Westbury Actually Looks Like
Honest notes from technicians who service Old Westbury every week — housing stock, the issues we see most, and what permitting looks like here.
Housing Stock in Old Westbury
What complicates HVAC work in Old Westbury isn't scale alone — it's preservation. Many of the large 1910s–30s Gold Coast mansions on the village's 2+ acre lots retain period-correct boilers, radiators, and detail work that modern upgrades have to respect. Alongside them, newer custom estates in the 5,000–15,000+ sq ft range add pool houses, guest cottages, and finished basements to the workload of one of Long Island's most exclusive estate villages.
Common HVAC Issues in Old Westbury
- Original 1910s–30s steam boilers and cast iron radiators requiring restoration, conversion, or hybrid heat pump pairings
- Estate-scale homes with separate guest cottages, pool houses, and garages each needing dedicated mini-splits or small heat pumps
- Multi-zone VRF (Mitsubishi/Daikin) designs with 6–12 indoor heads — common on full gut renovations
- Discreet mechanical concealment is a top design constraint — historic facades cannot show condenser pads from the road
- Line runs past 100 feet come standard on these 2+ acre wooded lots, so design margin matters
Neighborhood Notes
Wheatley Hills and the Post Road estates are the most involved multi-zone, VRF, and historic-restoration work — these are the homes where Mitsubishi Hyper-Heat, Trane modulating systems, and high-velocity solutions all get specified together. Old Westbury Village itself trends toward modern customs that are smaller than the estates, though still substantial homes.
Permits & Local Code
Plan for a double filing on Old Westbury replacements: the Village of Old Westbury permit and the Town of North Hempstead permit are both required, and the village layer brings strict design and concealment standards with it. Qualifying heat pumps remain eligible for PSEG-LI Home Comfort rebates.
Climate & Microclimate
Heavy tree cover works both ways in Old Westbury: it keeps summer temperatures moderate across the inland estate setting, but the pollen and leaf litter it drops mean condenser coils need quarterly cleaning during peak season to hold rated capacity.
Three ways to save in Old Westbury
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 Old Westbury
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 Old Westbury
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 Old Westbury
Explore our specialized HVAC services with detailed information for Old Westbury homeowners
Furnace Repair
in Old Westbury
No Heat Emergency
in Old Westbury
Furnace Installation
in Old Westbury
Heating Repair
in Old Westbury
Furnace Tune-Up
in Old Westbury
Furnace to Heat Pump Conversion
in Old Westbury
Hybrid Heating System
in Old Westbury
Heat Pump Repair
in Old Westbury
Emergency Heating Service
in Old Westbury
Heating Oil Service
in Old Westbury
Boiler Repair
in Old Westbury
AC Repair
in Old Westbury
AC Installation
in Old Westbury
AC Tune-Up
in Old Westbury
Boiler Installation
in Old Westbury
Heat Pump Installation
in Old Westbury
Mini-Split Installation
in Old Westbury
Oil to Gas Conversion
in Old Westbury
Need Help Choosing a Service?
Our HVAC experts are here to recommend the right solution for your Old Westbury home.
Proudly Serving Old Westbury and Surrounding Areas
Neighborhoods We Serve
- Old Westbury Village
- Wheatley Hills
- Post Road area
Local Landmarks
- Old Westbury Gardens
- SUNY Old Westbury
- Wheatley Hills Golf Club
- Jericho Turnpike
- Post Road
Nearby Cities
HVAC Permit Requirements in Old Westbury
Planning an HVAC installation or replacement in Old Westbury? Understanding local permit requirements is essential. Skipping permits can void warranties, create insurance issues, and cause problems when selling your home.
Jurisdiction: Village of Old Westbury
Installing in Village of Old Westbury 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 Old Westbury, Answered
Who offers emergency heating service in Old Westbury?
We do. No-heat calls in Old Westbury 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 Old Westbury?
A diagnostic visit gets you a written cause and a fixed repair price before any work starts — common Old Westbury 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 Old Westbury?
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 Old Westbury before you book.
Do you handle heating installation and replacement in Old Westbury?
Yes — furnaces, boilers, and heat pumps, quoted after a Manual J load calculation rather than a guess from the old nameplate. Installation estimates in Old Westbury are free, financing is available, and qualifying heat pump work can pair with current PSEG-LI Home Comfort rebates.
Heating services in Old Westbury
No heat right now? Call (516) 259-1191 and dispatch confirms current availability for your address.
AC Repair & Installation in Old Westbury, Answered
Who does AC repair in Old Westbury?
We do. Air conditioning repair calls in Old Westbury 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 Old Westbury?
A diagnostic visit gets you the written cause and a fixed repair price before any work starts — Old Westbury 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 Old Westbury?
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 Old Westbury 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 Old Westbury?
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 Old Westbury and the rest of Nassau County with insured, EPA 608-certified crews and written pricing on every visit.
Cooling services in Old Westbury
AC not cooling? Call (516) 259-1191 and dispatch confirms current availability for your address.
Heating & AC Installation in Old Westbury, Answered
Who installs new furnaces and heating systems in Old Westbury?
We do. Home+ installs furnaces, boilers, heat pumps, and full HVAC systems across Old Westbury, 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 Old Westbury?
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 Old Westbury home?
With a Manual J load calculation, not the nameplate on the old unit. Old Westbury 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 Old Westbury?
Most furnace, AC, or heat pump changeouts in Old Westbury 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 Old Westbury and the rest of Nassau County with insured, EPA 608-certified crews and written pricing.
Installation services in Old Westbury
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 Old Westbury, Answered
Who repairs and replaces water heaters in Old Westbury?
Home+ Air and Heat does. We diagnose and replace gas, electric, hybrid heat pump, and tankless water heaters throughout Old Westbury, and you get the repair or replacement price in writing before any work starts.
I have no hot water in Old Westbury — 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 Old Westbury?
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 Old Westbury home need?
We size on how many bathrooms and occupants you have, not the label on the old tank. Most Old Westbury 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 Old Westbury address?
Water heater failures are treated as urgent because of the water damage risk. Call and we confirm the next available window for your Old Westbury address; we serve Old Westbury and the rest of Nassau County with insured, EPA 608-certified technicians.
Water heater services in Old Westbury
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 Old Westbury Neighborhood
Home+ Air and Heat serves Old Westbury Village, Wheatley Hills, Post Road and the rest of Old Westbury, Nassau County — heating, cooling, and water heater work with written pricing.
Which Old Westbury neighborhoods do you cover?
We run the same service across every section of Old Westbury, including Old Westbury Village, Wheatley Hills, Post Road. Dispatch treats them as one Old Westbury 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 Old Westbury Village, Wheatley Hills, Post Road 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 Old Westbury 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 Old Westbury 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 Old Westbury, and you get the number in writing before work begins. What changes between neighborhoods is the equipment approach, not the pricing.
Services available across Old Westbury
Not sure your street counts as Old Westbury? Call (516) 259-1191 and we will confirm coverage for your exact address.
HVAC Brands We Install & Service in Old Westbury
Trane, Mitsubishi Electric, and Bosch installations across Old Westbury, Nassau County — plus repair and maintenance on nearly every other residential brand already in local homes.
Trane in Old Westbury
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 Old Westbury
Ductless and cold-climate heat pump work: single-zone heads, multi-zone systems, and Sandy-era homes where ductwork is not practical.
Bosch in Old Westbury
Inverter heat pumps and air handlers where quiet operation and tight side-yard clearances matter.
Brands we repair and maintain in Old Westbury
Which brands do you install in Old Westbury?
We lead with Trane, Mitsubishi Electric, and Bosch on new installations in Old Westbury. That is a deliberate short list — stocking parts and training our own installers deeply on a few platforms produces better Old Westbury installs than carrying a dozen badges.
Do you repair and service brands you did not install?
Yes. Old Westbury 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 Old Westbury 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 Old Westbury 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 Old Westbury
No heat, no cooling, or something that smells wrong in Old Westbury, 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 Old Westbury?
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 Old Westbury?
Yes — evenings, weekends, and holidays are covered for no-heat and no-cool calls in Old Westbury 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 Old Westbury 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
Showing directions from Old Westbury, NY
Home+ Air & Heat
55 Jericho Tpke Suite 203, Jericho, NY 11753
Frequently Asked Questions
Real answers for Old Westbury homeowners, based on the homes and systems we work on every week.
Nearby Towns We Serve Near Old Westbury
We also provide expert heating and cooling services to these nearby communities
Why Old Westbury Homeowners Choose Home+ Air & Heat
We've been serving Old Westbury families with expert HVAC services for years. Our commitment to quality, reliability, and customer satisfaction sets us apart.