All Service Heating and Conditioning Inc. — Your HVAC Contractor in Islip Terrace, NY

All Service Heating and Conditioning Inc. was built on a simple conviction: homeowners in Islip Terrace, NY deserve straightforward answers, reliable workmanship, and a contractor who treats their home with the same care as their own. Located at 2975 Sunrise Highway in the heart of Islip Terrace, the company has established itself as one of Suffolk County's most trusted HVAC contractors. The team handles everything from oil burner service and boiler repair to central air installation and water heater replacement — bringing the depth of a full-service operation to every job. With 92 verified Google reviews averaging a 4.2-star rating, the business has a track record built in the real world, through real jobs completed across the South Shore.

The company's expertise reflects the specific demands of Long Island's HVAC market. Postwar homes along the Islip Terrace corridor present a mix of oil-fired heating systems, cast iron boiler setups, and ductwork configurations that vary building by building. Technicians at All Service Heating and Conditioning Inc. are trained across multiple system types and manufacturer platforms — including Rheem, Trane, Mitsubishi, Fujitsu, York, Carrier, Rinnai, Coleman, Ruud, and Lennox — and carry the equipment to diagnose and resolve most heating and cooling issues on the first visit. That readiness translates directly into fewer callbacks, less disruption for homeowners, and more reliable outcomes across Islip Terrace, Bay Shore, East Islip, Central Islip, and the broader Suffolk County service area.

Beyond technical capability, what distinguishes All Service Heating and Conditioning Inc. is its commitment to communication. Before any work begins, technicians explain what they found, what they recommend, and why — in plain terms, not trade jargon. Written estimates are provided before any repair or installation proceeds. No surprises on the invoice. No pressure to upgrade to equipment that falls outside a homeowner's actual needs. This approach has built a loyal customer base across ZIP code 11752 and the surrounding communities, where word-of-mouth carries more weight than any advertisement. Emergency HVAC service is available around the clock, because heating and cooling failures do not wait for business hours.

2975 Sunrise Highway, Islip Terrace, NY 11752 · (631) 254-4328

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All Service Heating and Conditioning Inc. service vehicle at a residential job in Islip Terrace NY

Why Do Islip Terrace Homeowners Choose All Service Heating and Conditioning?

Homeowners across Islip Terrace and Suffolk County choose All Service Heating and Conditioning Inc. because the company delivers what it promises and stands behind its work. The team carries state licensing, full insurance coverage, and manufacturer certifications — the credentials that protect you as a homeowner. More importantly, technicians arrive on time, communicate clearly, and complete most jobs in a single visit. Whether it is a routine HVAC tune-up, an emergency boiler repair, or a full water heater replacement, the standard of care is the same. As an All Service Heating and Conditioning Inc. serving Islip Terrace NY, the company's goal is simple: earn your trust on the first call and keep it for every call that follows.

Call All Service Heating and Conditioning Inc. at (631) 254-4328 or visit us at 2975 Sunrise Highway, Islip Terrace, NY 11752

State licensed, fully insured, and manufacturer-certified — All Service delivers every job on time and to spec across Islip Terrace and Suffolk County.

What HVAC and Plumbing Services Does All Service Provide in Islip Terrace?

All Service Heating and Conditioning Inc. provides the full range of HVAC and plumbing services that Suffolk County homeowners rely on throughout the year. Heating services include oil burner installation and service, aqua boiler repair, warm air furnace service, and heat pump installation for homes transitioning away from fossil fuels. Cooling services cover central air installation and repair, ductless mini-split systems from Mitsubishi and Fujitsu, and seasonal maintenance for existing equipment. Plumbing services include water heater service and installation — both tank and tankless — and oil tank service for the aging underground and above-ground tanks common to the South Shore. Explore our HVAC services for Islip Terrace

From oil burners to ductless mini-splits and tankless water heaters — full-service HVAC and plumbing under one roof for all of Suffolk County.
HVAC service call in Islip Terrace NY — All Service Heating and Conditioning Inc. technician at work

All Service Heating and Conditioning Inc.'s Commitment to Islip Terrace and Suffolk County

The team at All Service Heating and Conditioning Inc. is committed to the Islip Terrace community in a straightforward way: show up on time, do the work right, and be available when homeowners need help. That means maintaining emergency availability 24 hours a day, seven days a week for heating and cooling failures across Islip Terrace, Bay Shore, East Islip, and the surrounding areas. It also means investing in technician training as HVAC technology evolves — from traditional oil systems to modern cold-climate heat pumps — so that the company remains capable of serving every configuration of home across ZIP code 11752 and Suffolk County. The commitment is not complicated: deliver the level of service that keeps customers returning year after year.

24/7 emergency availability and continuous technician training — All Service remains ready for every HVAC and plumbing need across Islip Terrace and Suffolk County.

Areas We Serve

All Service Heating and Conditioning Inc. serves customers throughout Islip Terrace and Suffolk County, including Bay Shore, East Islip, Islip, Central Islip, West Islip, Oakdale, Great River, Ronkonkoma, and Bohemia. Whether you're in a postwar home near Sunrise Highway in Islip Terrace or further east toward Oakdale and the Connetquot River corridor, our HVAC and plumbing team is close by.