Getting a New Jersey Home Ready for Winter

Do these yourself, in about an hour

None of it needs a technician and all of it prevents calls.

Run the heat before you need it

Turn the thermostat up on a mild September day and let the system run for twenty minutes. You are checking that it lights, that heat actually arrives at the registers or radiators, and that nothing smells wrong beyond the usual first-run dust burn-off. Finding a fault on a 60-degree day is an appointment. Finding it at 15 degrees is an emergency.

Change the filter

The cause of a genuinely large share of no-heat calls. A restricted filter trips the limit switch, so the furnace heats, stops before the house is warm, then restarts. Note the size printed on the frame and keep spares.

Test the carbon monoxide alarms

New Jersey requires them, and they expire — most have a service life stamped on the back, typically seven to ten years from manufacture. Press the test button on each, and check the date. This is the backstop for the one furnace failure that genuinely matters.

Clear the outside terminations

High-efficiency furnaces and boilers vent through PVC out a side wall, and those pipes have to stay clear — of leaves, of shrubs, and later of drifted snow. A blocked intake or exhaust shuts the appliance down, and after a heavy snowfall that is a common call that a homeowner could have prevented.

Find your shut-offs now

The gas shut-off, the water main, the service switch for the furnace or boiler, and the breaker. Knowing where they are before something goes wrong is worth more than it sounds at two in the morning.

What the annual service is actually for

Book it in September or October, not January.

The combustion analysis

The part that cannot be eyeballed and the reason the visit matters. It measures what is actually coming out of the flue, which is how incomplete combustion and cracked heat exchangers are found before they become dangerous.

The consumables

Flame sensor cleaned, igniter checked, condensate trap cleared, safeties tested. These are the parts that fail first, and they are far cheaper to replace on a scheduled visit than at an after-hours rate.

The warranty condition

Most manufacturer warranties require documented annual servicing, and that condition is enforced more often than people expect. Keep the invoice — it is the documentation.

Specific to older New Jersey housing

Three things that matter more here than in newer construction.

Steam systems want attention before the season

Check the sight glass water level, and look at whether the main vents in the basement are doing anything. Uneven heat that arrives in December is usually a venting problem that could have been sorted in October.

If you heat with oil, look at the tank

Level, obviously, but also the condition of the tank and lines if it is above ground. And if there is a buried tank, this is the season it matters — a failure in February is a much worse time to be dealing with it.

Pipes on exterior walls

Older New Jersey housing frequently runs plumbing through uninsulated exterior walls. Know which ones, because those are the ones to protect if the heat ever does fail: cabinet doors open, a thin trickle running from the furthest faucet.