HVAC Services in Holbrook, NY
Residential heating and air conditioning for homeowners in Holbrook — AC repair, furnaces and boilers, oil burners, heat pumps, ductless mini-splits, and the ductwork that ties it together.
Holbrook is a largely residential community south of Lake Ronkonkoma, with a housing stock dominated by post-war ranches, expanded ranches, and split levels on standard lots. Many of these homes were built with oil heat and hydronic baseboard, and central air was added later wherever the duct could physically fit — usually an attic or a crawlspace. The retrofit ductwork is often the weak half of the system and the source of comfort complaints.
Hartworx HVAC is a residential-only heating and cooling company based in Ronkonkoma, and Holbrook sits inside that service footprint. The owner, Travis Hart, has worked in the HVAC trade since 2017 and answers the phone himself — there is no dispatcher between you and the person who shows up at the door. When equipment in Holbrook fails, the call is to (631) 873-5844 and the job is to get it running again, not to sell you something you do not need.
Heating & air conditioning services in Holbrook
Homes in Holbrook run on a mix of forced-air furnaces, hot water and steam boilers, oil burners, central air, heat pumps, and ductless systems. The work below is what we do here — each links to the page that explains it in detail rather than repeating the same description on every town page.
What's different about Holbrook
Flex duct run through an unconditioned Holbrook attic in July is sitting in air far hotter than the house, and a run that was crushed, kinked, or disconnected at a boot when it went in starves the rooms it serves. Undersized or missing returns are common here, and a starved coil freezes and stops moving air entirely.
The point of naming it is that the fix is not the same everywhere. A condenser on a salt-air block, a flex duct run through a 120° attic, and a thirty-year-old cast iron boiler in a damp basement are three different jobs, and the wrong move on any of them is to treat it like the other two. On a service call in Holbrook, the equipment is looked at first and the diagnosis comes from what is actually there.
Holbrook HVAC questions, answered
Real questions from the kind of call that comes in from Holbrook. If yours is not here, call and describe what the system is doing.
My Holbrook attic has flex duct running through it and the upstairs doesn't cool. Is that the ducts?
It often is. Flex duct in an unconditioned attic that has been crushed, kinked, or disconnected at a boot starves the rooms it serves, and undersized or missing returns make a coil freeze and stop moving air. A new condenser bolted to bad duct is the most common way a homeowner spends a lot of money and stays uncomfortable.
My Holbrook home has oil heat. Do you service oil burners?
Yes. Hartworx services and repairs oil burners — we service oil, we don't convert it. We do not do oil-to-gas conversions and do not swap heat exchangers. If your burner is down, the job is to get it running.
There's water staining the ceiling under my attic air handler. Do I need to shut the system off?
A stain under an attic air handler usually means the condensate drain clogged and the secondary pan or float switch is missing or failed. Shutting the system off stops the water. The float switch that shuts the system down instead of letting water find the drywall is the detail that gets skipped on a lot of retrofits.
Do you work on boilers, or only forced air?
We work on boilers directly — hot water and steam, baseboard and radiators. Most heating and cooling companies in this area won't touch a boiler and hand it to a plumber. Hartworx does this work.
Holbrook on the map
Holbrook is in Town of Islip, Suffolk County. The map below is interactive — pan, zoom, and click to explore the area. Hartworx HVAC is based in Ronkonkoma and travels to Holbrook for residential service calls.
Request service in Holbrook
Tell us what is happening with your heat or AC. If it is out right now, calling (631) 873-5844 is faster — open seven days a week until 10 PM.
In Holbrook and need help now?
Open 7 days a week, until 10 PM. The person who answers is the person who comes out.
Nearby areas we serve
Communities around Holbrook where Hartworx HVAC also works.