Home Maintenance

Smoke & CO Detector Replacement — $59/unit

Here’s the check most homeowners have never done: take a detector off the ceiling and look at the date on the back. Smoke alarms expire 10 years after manufacture (NFPA 72), and CO alarms after 7–10 years depending on the model — because the sensors inside physically degrade, whether or not the test button still beeps.

Most homes have at least one expired unit, and the expired one is usually in the spot that matters — the hallway outside the bedrooms, or the only CO alarm on the furnace level. It’s a ten-second check that almost nobody does, guarding against the two fastest-moving dangers a house has.

The Service — What we actually do

We check the date and type of every detector in the house, replace the expired or missing ones, and test each unit before we leave — including checking that you have coverage where code and common sense want it: every bedroom hallway, every level, and CO protection near sleeping areas and fuel-burning appliances. You get a simple rundown of what’s installed and when each unit will next need attention.

$59 per replaced unit, flat-rate labor, with units purchased by you or through NEHH. Just need fresh batteries? The whole-house battery swap is $30 plus $4 per unit.