All Seasons Air Conditioning provides expert HVAC services to Port Washington homeowners and businesses — AC repair, AC installation, heating repair, boiler service, furnace replacement, and annual tune-ups. Family-owned for 58 years. Same-day service available. Free estimates.
We respond within 1 business hour
From same-day AC repairs and emergency heating service to boiler replacements and new system installations — All Seasons handles every HVAC need for Port Washington residents, backed by 58 years on Long Island.
AC not cooling? Fast, same-day AC repair for Port Washington homes. All brands and makes serviced. Transparent pricing before work begins.
New central AC and ductless mini split installation for Port Washington homes. Authorized Daikin dealer. Free estimates, financing available.
Annual AC tune-ups for Port Washington homeowners. 21-point inspection, all brands. Book your spring service before summer slots fill up.
Furnace not working? Boiler issues? All Seasons repairs all heating systems in Port Washington — same-day emergency service available. Gas, oil, and boilers.
New furnace, boiler, or heat pump installation for Port Washington homes. Free estimates, financing available, completed in one day for most systems.
Ductless mini split installation for Port Washington homes without existing ductwork. Ideal for older properties and additions. Authorized Daikin dealer.
Port Washington's older housing stock includes many homes with hot water boilers and baseboard radiators — a heating system that requires specialized expertise to service properly. All Seasons technicians are experienced with gas boilers, oil boilers, and hydronic heating systems common in North Shore Nassau County homes.
Whether your boiler won't fire, is losing pressure, making unusual noises, or has reached the end of its service life, we provide fast diagnosis, honest repair-vs-replace advice, and professional installation of modern high-efficiency replacement systems.
Port Washington is a prominent waterfront community on Nassau County's North Shore — known for its harbor, parks, commuter rail access, and a mix of historic estates, colonial homes, and modern construction along Manhasset Bay. The area's diverse housing stock ranges from grand older properties with original boiler systems to newer homes with central air, and All Seasons has served them all since 1968.
Our technicians know Port Washington well — including the neighboring hamlets of Port Washington North, Manorhaven, Flower Hill, and Sands Point. We understand the specific heating and cooling challenges of waterfront homes (humidity, salt air, corrosion considerations) and the older boiler-heated properties common to the North Shore.
"All Seasons replaced our 28-year-old boiler in Port Washington. They came out the same week, gave a fair estimate, and had the new system running in one day. Highly professional from start to finish."
"Called them when our AC died on a July Friday afternoon. They were at our house by 6pm, found the problem, and fixed it that evening. Incredible response. We've used All Seasons ever since."
"We have an older home in Port Washington and All Seasons installed a ductless system for us. They were knowledgeable about working in older homes and the installation was done cleanly and efficiently."
We serve all of Nassau County and Long Island's North Shore — including neighboring hamlets and communities around Manhasset Bay.
All Seasons has been Long Island's trusted heating and AC company since 1968. Same-day service, free estimates, and transparent pricing — every job, every time.
