Furnace Installation in Hackensack, NJ
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Bergen County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, and winters that don't go easy
Hackensack needs a working furnace from October through May. That's eight months out of the year, with winter nights averaging 25°F in December through February. A new furnace here has to carry most of the calendar, not just the coldest weeks.
Most homes in the area heat with gas, and any non-weatherized gas furnace built after November 2015 has to hit at least 80 percent AFUE by federal rule. That's the floor, not a target to aim for. Bergen County has also logged 34 winter storms and 155 damaging wind events over the past ten years, the kind of weather that knocks out power along with the heat. Across New Jersey, 11 percent of households lost power for 24 hours or more in 2024, which matters if the furnace you choose needs electricity to run.
- 8 months
- October through May, your furnace is on duty
- 25°F
- the average winter night it heats against
- 77%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $140 a year to run in Bergen County compared with a gas furnace.
Estimates for a typical Bergen County home, from EIA household energy data, New Jersey fuel prices and NOAA climate normals. Your home will differ.
New Jersey requires HVAC contractors to hold a state license.
The state board tests and records the contractor, not the job, so the license you're checking covers the business doing the work, not this specific furnace. New Jersey doesn't let towns layer on their own HVAC license on top of that, so the state license is the one that applies here no matter where in Bergen County the house sits.
For a furnace install, the local building office is the other check in place. Bergen County towns require a permit for a furnace replacement and an inspection once it's done, and that inspection is what catches a bad gas connection or a venting mistake before the furnace runs unattended. Most homes here heat with gas, so that inspection is doing real work in this county.
Sources: New Jersey Legislature · New Jersey Division of Consumer Affairs
- What size furnace does my house need?
- The right size comes from a load calculation, not from the square footage of your house alone. A contractor measures your walls, windows, insulation, and ceiling height, then runs those numbers through a standard formula to find how much heat your house actually loses on a cold night. Too big and the furnace short cycles, heating the air fast then shutting off before the house feels warm. Too small and it runs constantly through the winter and still can't keep up. With winter lows here averaging 25°F, getting this number right matters more than picking a furnace off a chart by house size.
- How do I know it's time to replace my furnace?
- Watch for uneven heat between rooms, a furnace that cycles on and off more than it used to, or a rise in gas bills with no other explanation. Age matters too. A furnace installed new today has to meet 80 percent AFUE at minimum, so if yours is much older and running less efficiently than that, it's burning more gas than it needs to for the same heat. Homes here need heat from October through May, eight months of the year, so a furnace on its way out gets worked hard and the signs tend to show up fast. If a contractor has been out for the same repair more than once in a season, that's usually the point to stop repairing and start pricing a replacement.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and how much you run the furnace, and a contractor can walk through that math for your specific situation. What's true everywhere is that a high-efficiency furnace burns less gas to produce the same heat, and with 76.9 percent of homes in Bergen County heating with gas, that difference shows up over a full heating season. Since homes here need heat eight months out of the year, from October through May, a furnace here logs a lot more run time than one in a milder climate, which changes the payback compared to a house that only heats for a few months. A contractor can price both options for your house and give you real numbers instead of a general answer.


