Suffolk County, New York

HVAC Services in Setauket, NYComfort You Can Trust

Comfort solutions built around Setauket’s historic homes — including cooling for houses that were never built for ductwork.

  • ZIP codes served11733
  • From our Selden shopabout 6 miles — same-day service
  • Suffolk CountyLicensed & insured · 24/7 emergency

Your Setauket Heating & Cooling Contractor

Setauket has some of the oldest housing stock on Long Island. Homes around the Setauket Presbyterian Church, Frank Melville Memorial Park and the historic district date to the 18th and 19th centuries, and they were built long before anyone imagined forced-air heating, let alone central air conditioning. That single fact drives most of the HVAC work we do here.

You do not have to gut a historic home to make it comfortable. Ductless mini-splits mount on an exterior wall with a three-inch line-set penetration, zone room by room, and give you both heating and cooling from one system. For homes that do have usable chases, we run high-velocity or conventional ducting where it can be done without damaging original finishes. Either way, we walk the house first and tell you what is actually feasible.

Mustang Heating & Air is licensed and insured in Suffolk County. We handle Town of Brookhaven permits, we work carefully in older homes, and every estimate is free and written out before we start.

Homes We Work On in Setauket

Setauket runs from genuine 18th-century colonials and 19th-century farmhouses in the historic district to postwar ranches and 1980s–1990s development in South Setauket. The older homes typically have hydronic baseboard or radiator heat with no ductwork at all, uninsulated or under-insulated wall cavities, and plaster that does not forgive rough installation work. The newer South Setauket homes are conventional forced-air and mostly need equipment that is at or past 20 years old replaced.

Local Conditions

What Affects HVAC Systems in Setauket

Every neighborhood has its own patterns. These are the issues we run into most often on Setauket calls — and what we actually do about them.

Historic homes with no duct chases

Original framing bays, plaster-and-lath walls and preservation-minded owners make conventional ductwork impractical in much of Old Setauket. Ductless mini-splits are usually the right answer — full heating and cooling, room-by-room zoning, and one small penetration per indoor head instead of soffits running through every room.

Radiator and baseboard heat that stays, cooling that gets added

Many Setauket homeowners want to keep working hydronic heat and simply add air conditioning. A ductless multi-zone system does that cleanly, and it also gives you a high-efficiency backup heat source that runs on electricity when oil prices spike.

Envelope work matters more than bigger equipment

In a 200-year-old house, an oversized system is a worse answer than a right-sized one paired with sensible air sealing. We calculate the load on the house as it is insulated today and tell you honestly when sealing and insulation will do more for comfort than another ton of capacity.

Harbor-side humidity and shoulder seasons

Homes near Setauket Harbor and Conscience Bay run damp in spring and fall when neither the heat nor the AC is running much. Inverter-driven equipment and whole-home dehumidification handle those shoulder months far better than a single-stage system that only knows on and off.

Common Questions

Frequently Asked Questions

Get a Free Estimate Today

Speak with a Mustang Heating & Air expert about your needs — no obligation, no hidden fees. Call us now for a fast, honest, upfront quote.

Call for Your Free Estimate(631) 871-4762

Need HVAC Service in Setauket?

Call Mustang Heating & Air for heating, cooling and indoor air quality service throughout Setauket and Suffolk County. Licensed, insured, and available 24/7 for emergencies.

Phone

(631) 871-4762

Email

info@mustangheatingandair.com

Business Hours

Open 24 hours

Guarantee

Peace of Mind