"Called them for Heat Pump Maintenance in Hicksville and they were fast and did a very thorough work."
Sucharu Subedi
Hicksville, NY · Heat pump maintenance
8.8 miles from our Levittown HQ
HVAC repair & installation in Williston Park, NY
Williston Park's compact village blocks of Tudors and Colonials need careful equipment placement — tight side yards, decorative trim, and historic streetscape. We design every install for both code and curb appeal. We bring trucks fully stocked with parts for every major brand serviced in Williston Park, so most repairs are completed on the first visit.
Same-day appointments available
Fully insured
Local crews, fast response
About HVAC service in Williston Park
Williston Park is a small incorporated village of largely 1920s through 1940s homes on compact lots. Duct systems are the exception rather than the rule here, which is why ductless work dominates what we do in the village — and why this hub carries the full scope. ZIP 11596, 8.8 miles from our Levittown shop.
Complete service menu
Every HVAC service we offer in Williston Park
All 13 services available across Williston Park — usually same-day for repairs, free in-home quotes for installs.
AC Repair in Williston Park
cooling · repair
Same-day cooling repairs most days across Long Island.
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AC Installation in Williston Park
cooling · install
High-efficiency central AC, sized and installed right.
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Ductless Mini-Split Installation in Williston Park
cooling · install
Room-by-room comfort with no ductwork required.
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AC Maintenance & Tune-Up in Williston Park
cooling · maintain
Annual tune-ups that prevent breakdowns and extend equipment life.
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Heating Services in Williston Park
heating · repair
Furnaces, boilers, and heat pumps — repaired, serviced, replaced.
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Furnace Repair in Williston Park
heating · repair
Emergency furnace repair, day or night.
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Furnace Installation in Williston Park
heating · install
High-efficiency furnaces that lower your gas bill.
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Boiler Repair & Installation in Williston Park
heating · repair
Boiler repair, cleaning and installation — steam, gas & combi.
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Heat Pump Installation in Williston Park
heating · install
Heat pump repair and installation — ducted & ductless.
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Water Heater Installation in Williston Park
heating · install
Tank, tankless, and heat-pump water heaters — installed right.
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Whole-Home Generator Installation in Williston Park
heating · install
Standby power sized and installed on Long Island.
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Emergency HVAC Repair in Williston Park
heating · repair
No heat. No AC. No waiting.
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Emergency Boiler Repair in Williston Park
heating · repair
Cold radiators. Leaking boiler. Call any hour.
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What we see in Williston Park
Common HVAC issues by season
We regularly service Williston Park year-round. Here's what tends to fail and when.
Summer in Williston Park
- No ducts for central air — Many Williston Park homes heated by hot water or steam never had ductwork. Window units strain circuits and leave upstairs rooms warm.
- Squeezed outdoor units — Tight side yards limit airflow around condensers, so units run hot, lose capacity and fail earlier than they should.
- Ductless drain leaks — Mini-splits in older homes can drip indoors when condensate lines clog or are pitched wrong, staining plaster ceilings and walls.
- Finished attics running hot — Rooms under the roof collect heat and rarely get airflow from any central system, so they are the last to cool.
Winter in Williston Park
- Steam vent and main problems — Prewar steam depends on venting that works. Clogged main vents leave radiators cold, and banging pipes usually mean water is trapped.
- Low-water cutoff lockouts — Sediment fouls the cutoff on old boilers, which then shut down even with water in the glass until the control is serviced.
- Near-boiler piping errors — Older boilers often have piping that was never right to begin with, causing wet steam, uneven heat and noise.
- Cold attic and rear rooms — Finished rooms at the far end of a radiator loop get little heat on the coldest days.
Deep dive · Williston Park
Ductless mini-split installation in Williston Park, NY
Williston Park is a village of compact pre-war and early post-war homes, many heated by hot water or steam with no ducts anywhere in the building. Adding conventional central air means losing closet space and boxing in ceilings. Multi-zone ductless gives the same cooling with no ductwork and per-room control, which suits these floor plans far better.
Multi-zone systems
Three to five wall heads on one or two outdoor units, $12,000–$19,000 installed. Each room sets its own temperature.
Single-zone for bedrooms and attics
Finished attics and rear bedrooms are the usual hot spots. One 9k–12k BTU head runs $4,200–$5,900 installed.
Heating too, not just cooling
Modern cold-climate heads produce heat down to 5°F, so shoulder-season heating can come off the mini-split instead of firing the boiler for the whole house.
Tight-lot condenser placement
On narrow village lots we use wall brackets or side-yard pads with vibration isolation to stay clear of walkways and neighbor windows.
Heating and cooling repair in Williston Park
The section above covers ductless installation. Because Williston Park has no service-specific pages yet, this section sets out heating and repair work for a village of prewar homes.
Boiler and steam service
Cast iron boilers, radiator and main venting, and low-water cutoffs on the systems these homes were built around.
Boiler replacement
Sized to connected load, with near-boiler piping rebuilt rather than reused where it was wrong to begin with.
Cooling repair
Service on existing central and ductless systems, including the multi-zone installs we and others have put in here.
Tight-lot placement
Outdoor unit placement is worked out against the village's real setback limits before we quote, not on install day.
Why Williston Park chooses us
Local Long Island knowledge — not a national chain.
- Just 8.8 miles from your front door — fast trucks, low fuel surcharges
- Trucks fully stocked with common parts — most repairs done first visit
- Honest, upfront flat-rate pricing — no surprise add-ons after the work starts
- Fully insured, EPA 608-certified technicians
- Full scope in writing before you sign
- 1-year warranty on every repair · up to 10-year parts on installs
EPA 608
Every technician
24/7
Emergency dispatch
Fully
insured
COI on request
⌖ HQ · Levittown, NY
9-mile radius
Williston Park sits 8.8 miles inside our 9-mile service zone.
Transparent Williston Park pricing
Real numbers, before any work starts
No surprise charges, ever. Williston Park homeowners see the full repair or install price in writing first.
Diagnostic visit
$199–$199
Waived with approved repair
AC capacitor replacement
$245–$420
Most-common summer fix
Furnace ignition repair
$285–$595
Igniter, flame sensor, board
AC tune-up
$189
Spring-special pricing
Furnace tune-up
$209
Includes safety inspection
Central AC install
From $7,200
$0 down on approved credit
Final pricing in Williston Park confirmed in writing after on-site diagnosis. No work begins without your approval.
Brands serviced in Williston Park
We service every major HVAC brand
No matter what's installed in your Williston Park home — we have parts, training, and dealer relationships for it.
CarrierTraneLennoxRheemGoodmanBryantAmerican StandardYorkMitsubishiDaikinFujitsuLGBoschWeil-McLainBurnhamLochinvarNavienBuderusPeerlessSlant/FinBradford WhiteA.O. Smith
What neighbors say
Long Island homeowners trust us
"Had my furnace maintenance done and I’m very happy with the service. The technician was friendly, professional, and took the time to check everything carefully. He explained what he was doing and made sure the furnace was running properly before he left. I’m in Hicksville and it’s nice to find someone local who is reliable and does good work. I would definitely recommend them for furnace maintenance or HVAC service."
Narendra Subedi
Hicksville, NY · Furnace maintenance
"I had a fantastic experience withLong Island HVAC Repair! My ac system was struggling to cool and I noticed a frozen line near the unit. I called for an emergency repair and they were at my home in 90 mins. The technician was professional, quickly located the leak, and had the system running perfectly in no time. Highly recommend for any local Levittown heating repairs!"
Pabitra Pun Bhattarai
Levittown, NY · Emergency AC repair
FAQs
Williston Park HVAC questions, answered
Where can an outdoor unit go on a tight Williston Park side yard?+
Often along a side wall, on a pad or a wall bracket, as long as there is room for airflow and for a technician to reach it. We plan the location with the street view in mind, since Tudors and Colonials here have trim and landscaping that owners want to protect.
Do I need multi-zone or single-zone ductless for a finished attic in Williston Park?+
A finished attic or rear bedroom can often run on a single-zone head with its own outdoor unit. If you want several rooms covered, multi-zone shares one outdoor unit across heads. The answer depends on how many rooms you cool, where the unit can sit, and the electrical capacity.
Can ductless cooling work alongside my Williston Park boiler and radiators?+
Yes. Many village homes keep their radiators or steam for heat and add ductless heads for summer, because there is no duct system to retrofit. The two systems work independently, and the boiler stays the main heat source in winter.
Do you provide HVAC service in Williston Park, NY?+
Yes — Williston Park (ZIP 11596) is well within our 9-mile service radius. We're just 8.8 miles away, so Williston Park addresses usually get same-day appointments.
How fast can you get to my Williston Park home for emergency service?+
For complete no-heat or no-cool emergencies in Williston Park, our 24/7 dispatch typically gets a technician on the way within 60–90 minutes. Standard same-day service is available almost every day.
What credentials and insurance do you carry in Williston Park?+
We're fully insured for residential HVAC work in Williston Park and across Long Island, and our technicians are EPA 608–certified. We provide current insurance and certification documentation on request.
How much does AC or furnace repair cost in Williston Park?+
Our diagnostic visit in Williston Park is a flat $199, waived when you approve the repair. Most common AC and furnace repairs — capacitors, ignitors, flame sensors, contactors, blower motors — run $180–$650 all-in with upfront flat-rate pricing before any work starts. Bigger jobs like refrigerant leak repair or a blower replacement are quoted on the spot, and if a repair no longer makes sense on an older system we'll show you repair-vs-replace numbers side by side.
Do you offer financing for Williston Park homeowners?+
Yes — through Synchrony Home Financing. Williston Park homeowners can apply for $0 down on approved credit, with monthly plans and full terms in writing before you sign.
What rebates can I get on a new system in Williston Park?+
Williston Park is in PSEG Long Island's service territory. PSEG runs incentive programs for qualifying cold-climate heat pumps and high-efficiency central AC; amounts and eligibility change by program year and household income, so check PSEG Long Island's current terms before you buy.
Nearby service areas
Towns near Williston Park we also serve
Need HVAC service in Williston Park?
Call now and we'll dispatch a technician — usually same-day across Williston Park and ZIP 11596.