Smoke and carbon monoxide detector installation
Smoke detector installation is the smallest invoice we write and the only one that has ever mattered at three in the morning. Most houses we walk into have too few alarms, alarms older than the people living there, or a detector on a nine volt battery somebody pulled out in frustration two winters ago. This work sits inside our small electrical and fixture list and it is priced as one visit for the whole house rather than per device.
Service family Light fixture installation
Scheduling Monday through Friday, 8 a.m. to 4 p.m.
Service area Six counties across Southeast Michigan
Phone (734) 540-0347
What this visit covers
We count what you have, check the date stamped on the back of every unit, test each one, and replace or add devices so the house is covered room by room. Battery units mount and go. Hardwired units come off an existing plug and bracket and go back on the same connector. You get a written list at the end showing every location, every device type and the year it was fitted.
Where detectors belong in a house
Current practice puts a smoke alarm inside every bedroom, one outside each sleeping area, and one on every level including a finished or unfinished basement. Carbon monoxide coverage goes outside the sleeping areas and on any level with fuel burning equipment or an attached garage. Most houses built before the nineties were fitted to a thinner standard and have never been brought up.
Where our work stops and a licensed electrician starts
Battery devices and hardwired replacements at existing locations are ours. The list below belongs to a licensed electrical contractor, and we tell you which of the two you need before quoting the visit.
- Running new cable to add a hardwired detector where none exists
- Interconnecting existing hardwired units that are not already linked
- Panel work, circuit changes and service upgrades
- Anything needing a municipal permit and an inspection
- A detector circuit that reads dead or trips its breaker
Hardwired, battery and the interconnected set
Three arrangements turn up. Battery only, common in older houses. Hardwired with a battery backup, standard since the early nineties. Hardwired and interconnected, where one alarm sounding sets off every alarm in the house. The third is the one you want, and where a house already has it, every unit in the set has to be replaced with compatible devices at the same time or the link breaks.
The ten year rule nobody knows about
A smoke alarm is a sensor with a service life, and the sensor degrades whether the alarm ever sounds or not. Manufacturers date stamp the back and rate them for ten years. Carbon monoxide sensors run five to seven. We find units from the nineties in nearly every older house we visit, still chirping cheerfully and detecting very little. Age is the reason we replace rather than the reason we test.
Smoke alarms and carbon monoxide alarms are different devices
They detect different things and they belong in different places. A smoke alarm reads particles in the air and belongs on a ceiling. Carbon monoxide is roughly the same weight as air and its detector can sit low on a wall. Combination units cover both and are the practical choice outside bedrooms, but a combination unit inherits the shorter of the two service lives.
What gets checked in every room
- The date stamped on the back of each existing device
- Device type, and whether smoke and carbon monoxide are both covered
- Mounting location against ceiling fans, vents and bathroom doors
- Whether hardwired units are interconnected, and with what
- Battery type, and whether a sealed unit suits the location
Ionization, photoelectric and the kitchen problem
Ionization sensors react quickly to flaming fires and also to toast. Photoelectric sensors react faster to smouldering fires, which is what most house fires start as, and they nuisance trip far less near a kitchen. Dual sensor units cover both. For the alarm in a hallway off a kitchen, the sensor type is the difference between a device that stays on the ceiling and one that gets removed.
The alarm that chirps at three in the morning
Chirping at night is usually temperature rather than malice. A cooling house drops the voltage of a tired battery below the threshold, and the alarm reports it at the coldest hour. It is a real warning that the battery or the unit is at the end of its life. Pulling the battery solves the noise and removes the protection, which is how houses end up with dead detectors.
Sealed ten year batteries
Sealed lithium units have the battery built in for the life of the device, with no door and nothing to remove. They cost more up front and they end the chirping problem permanently. They are the right answer for high ceilings, stairwell landings, rental properties and anywhere a ladder is involved, and they are what we fit by default unless a house already has an interconnected hardwired set.
Basements, furnaces and attached garages
Fuel burning equipment and cars are the two carbon monoxide sources in a house, so a furnace room and an attached garage both change the plan. A detector goes on the living space side of a garage wall rather than in the garage, where exhaust and cold would trip it constantly. A finished basement needs its own smoke alarm regardless of what sits on the floor above.
Ceilings, walls and how far from a vent
Placement decides whether an alarm works. Smoke alarms belong on the ceiling, at least four inches off any wall, and away from supply vents, ceiling fan blades and bathroom doorways where steam reaches. A unit within a foot of a register gets clean air pushed past it all day. We move units that are badly placed rather than replacing them where they sit.
Rentals, inspections and the letter from an insurer
Detector counts show up in rental inspections, closing documents and insurer correspondence more than any other small item. Landlords cover it in rental turnover repairs, sellers in pre listing home repairs and buyers in a new homeowner package. The written location list we leave behind is what satisfies most of those requests.
Older adults, hearing loss and alarms that work at night
Standard alarms sound at a pitch that many older adults do not hear while asleep, and hearing aids sit in a drawer overnight. Low frequency alarms and units with a strobe or a bed shaker exist for exactly this. These go in as standard on our hospital discharge home prep and aging in place modifications visits.
How long a whole house takes
Eight to twelve devices across three levels is about two hours, including testing and the written list. A house with an interconnected hardwired set takes longer because the units get replaced as a matched group. Where we are already on site for outlet and switch replacement or a home inspection repairs list, it adds an hour rather than a trip.
Book detector installation with our crew
If you cannot say how old the alarms in your house are, they are old. The full bundle with extinguishers and dryer vents sits in our fire and carbon monoxide safety package; this page is the detector work on its own. We cover Novi and the rest of the Wright’s Repairs area, and an annual home check keeps the dates current. View our Portfolio, then contact us now for a free quote.
