A practical guide to furnace and boiler care in New Jersey
Heating problems tend to show up on the coldest nights. Knowing how your system works, what you can check safely and when to call for help makes those situations easier to handle.
Furnace, boiler or heat pump: know what you have
A furnace heats air and sends it through ductwork to vents in each room. A boiler heats water and circulates hot water or steam through radiators, baseboards or in-floor tubing. A heat pump moves heat from outdoor air into the home using electricity. Many New Jersey homes use gas or oil furnaces and boilers, and some combine a heat pump with a furnace.
Knowing the type, fuel and approximate age of your system helps when you describe a problem. The model and serial number are usually on a label inside the access door or on the side of the unit; a photo of that label is useful when you contact a technician.
Checks you can make before calling
Confirm the thermostat is set to Heat and above the current room temperature, and replace its batteries if it uses them. Check that the furnace power switch, which often looks like a light switch near the unit, is on and that the breaker has not tripped. Look at the air filter; a badly clogged filter can cause a furnace to overheat and shut itself off.
For a boiler, check that the thermostat and power are on and note the pressure gauge reading if it is visible. If a basic check does not restore heat, avoid repeatedly resetting the equipment, as repeated resets can hide or worsen an underlying fault.
Safety first: gas and carbon monoxide
If you smell gas, leave the building right away, do not operate switches or appliances and call your gas utility or 911 from outside. Fuel-burning heating equipment can produce carbon monoxide, an odorless gas, if venting or combustion is not working properly.
Keep working carbon monoxide alarms near sleeping areas and on each level of the home, and test them regularly. Headaches, dizziness or nausea that improve when you leave the house can be a warning sign; get everyone outside and call 911.
Understanding efficiency and AFUE
Furnaces and boilers are rated by AFUE, which estimates the share of fuel converted to usable heat over a season. A higher AFUE means less fuel is wasted. High-efficiency condensing equipment typically vents through plastic pipe and produces condensate water that needs a drain, which can affect where and how the equipment is installed.
When comparing a repair with an upgrade, consider the system's age, recent repair history, comfort in each room and fuel costs, rather than efficiency ratings alone.
Why annual heating maintenance helps
Over a season, burners, flame sensors, blowers and filters collect dust and wear. An annual check before winter gives a technician a chance to clean key parts, look at venting and safety controls and point out problems while there is time to plan. It is not a guarantee against breakdowns, but it reduces surprises.
Between visits, keep the area around the furnace or boiler clear of stored items, especially anything flammable, and keep supply vents and radiators unobstructed so heat can reach each room.
This guide is general information. Your system and property may differ; a technician can explain what applies to your situation.