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HVAC Services in Warren County, NJ

Warren County is our closest neighbor — Hackettstown is about ten minutes from our Flanders shop. AGR HVAC serves Hackettstown, Washington, Phillipsburg, Belvidere, Blairstown, and Stewartsville with heating and cooling repair, installation, tune-ups, and ductless mini-splits.

Farmhouses, Older Homes, and Oil Heat

Much of Warren County is farmland and small river towns, and the housing stock shows it: older farmhouses, colonials along the Delaware, and homes that have heated with oil for decades. We work on those systems every week — aging oil furnaces, ductwork that’s been modified three times over fifty years, and additions the original system was never designed to reach. If your house has character and a heating system to match, that’s familiar territory for us.

What We Do Here

  • Heating repair & installation — including oil-fired systems common across the county
  • AC repair & installation — sized for older homes, not just new construction
  • Maintenance tune-ups — the single best way to keep an aging system alive longer
  • Ductless mini-splits & heat pumps — for additions, converted barns and outbuildings, and rooms the main system can’t reach

Minutes Away

Hackettstown, Washington, and the surrounding towns are the shortest drive we make. That means easy scheduling and quick turnaround on quotes and tune-ups across Warren County — usually within days, not weeks, and Hackettstown neighbors often get same-week slots.

Frequently Asked Questions

Our farmhouse still heats with oil. Can you keep it running? In most cases, yes — we repair oil-fired heating equipment and stock familiarity with the common failure points. When a system is genuinely past saving, we’ll tell you plainly rather than selling you repairs that won’t last.

Do you come to Phillipsburg and Belvidere? Yes — both are in our service area, along with Hackettstown, Washington, Blairstown, and Stewartsville.

We added a room and the furnace can’t keep up. What are our options? A ductless mini-split is usually the cleanest answer — it heats and cools the new space independently, without tearing into the existing ductwork or overloading the old furnace.

Is a tune-up worth it on an older system? It’s worth the most on an older system. That’s where we catch the worn capacitor, the clogged filter, or the burner issue before it becomes a no-heat situation.

Call AGR HVAC

Warren County homeowner? Call (201) 477-8301 — our hours are 9–5. AGR HVAC, 16 Donna Ln, Flanders, NJ 07836.

Our Services