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Franklin Borough sits just north of Newton in the heart of Sussex County, a close-knit community long defined by its mining heritage and its stock of older working-class homes. Many of the houses here were built in the mid-twentieth century or earlier — solid construction, but not designed around modern high-efficiency HVAC equipment. When a furnace reaches the end of its service life in a Franklin home, the replacement process goes well beyond swapping out the old unit. It starts with a proper load calculation that accounts for your home’s actual heat loss: the older insulation, the original ductwork runs, the basement or crawlspace configuration, and the fact that Sussex County winters are legitimately cold at this elevation.
Constant Air has been based in Newton since 1999, and Franklin is just a few miles up the road — close enough that we can get out the same day for an estimate. We run a full Manual J load calculation on every installation so the system we recommend is sized to your home, not pulled off a square-footage chart. Franklin’s housing stock tends to run toward ranch-styles and two-story colonials from the 1950s through 1970s, many with original ductwork and older flue configurations that need to be assessed before a high-efficiency furnace can be installed correctly. We factor all of that in up front so there are no surprises once work begins.
Our team handles every part of the job — equipment selection, gas line connections, venting and combustion air, thermostat setup, and Sussex County permit coordination. Free in-home estimates are always included, pricing is written before we start, and Hearth financing is available so a failing furnace doesn’t have to wait through another Franklin winter.
Franklin homeowners don’t need a regional chain dispatching from an hour away — they need a crew that knows this part of Sussex County and can actually get there when it matters. Constant Air has been working out of Newton since 1999, and Franklin is just a short drive up Route 23. We know the older housing stock common throughout the borough, the kind of ductwork and flue setups found in homes built before 1970, and what a mid-January cold snap means for a furnace that’s already running on borrowed time. Every installation is performed by NJ HVACR #19HC00108700 licensed technicians with full insurance on the job. We offer free in-home estimates, 24/7 availability if something comes up after startup, and Hearth financing so a properly sized, high-efficiency furnace is a real option rather than something you keep putting off.
Straight, written estimate before any work starts.
We diagnose for your actual Franklin home — not a one-size guess.
NJ-licensed techs (#19HC00108700), done right the first time.
We stand behind the work and answer 24/7.
We run a Manual J load calculation on every installation — it accounts for your home’s square footage, ceiling heights, insulation levels, window count, and local climate data for Sussex County. Older Franklin homes often have air leakage and ductwork configurations that make generic BTU estimates unreliable. Call (973) 948-0680 to schedule a free in-home estimate and we’ll size the system to your specific home, not a ballpark chart.
Yes — New Jersey requires a mechanical permit for furnace replacements and new installations, and Franklin Borough is no exception. Constant Air handles the permit application and coordinates the final inspection as part of every job. You won’t need to deal with the borough or county offices, and having a proper permit on file protects you when it’s time to sell the home.
Qualifying high-efficiency furnaces may be eligible for NJ Clean Energy Program rebates, and Hearth financing is available if you’d prefer to spread out the cost. During your free in-home estimate we’ll identify which systems qualify and walk you through the current incentive amounts before you commit. Reach us at (973) 948-0680 to get started.
A straightforward furnace replacement usually takes four to six hours. Homes that need venting modifications, ductwork adjustments, or gas line work may run a full day. We cover the full scope during the free in-home estimate so there are no surprises on installation day. Questions before you schedule? Call (973) 948-0680 — we’re just a few miles away in Newton.
Newton’s local HVAC team since 1999 — we answer 24/7 and serve all of Sussex County.
At Constant Air, we specialize in delivering high-quality heating, ventilation, and air conditioning services that keep your home and business comfortable all year round.
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