Smoke Detectors: Ewa Gentry vs Mililani Town

Where do I have to put smoke alarms in my Ewa Gentry home?

Under IRC §R314 as adopted by ROH Chapter 16, you need a working smoke alarm inside every sleeping room, outside each sleeping area in the immediate vicinity of bedrooms, and on each additional story including habitable attics and basements. On multi-level homes, an alarm at the top of each upward stair is also required.

Do smoke alarms in my Ewa Gentry house have to be hardwired?

Yes for new construction and any alteration requiring a permit valued over $1,000, under IRC §R314.6 and R314.2.2 via ROH Chapter 16. Hardwired alarms must have battery backup and be interconnected. Battery-only alarms remain acceptable in existing dwellings not undergoing permitted alterations; HFD recommends 10-year sealed-lithium models.

Do I also need carbon monoxide alarms?

Yes if your Ewa Gentry dwelling contains a fuel-burning appliance (gas range, gas water heater, gas dryer) or has an attached garage. IRC §R315 as adopted by ROH Chapter 16 requires CO alarms outside each sleeping area in those dwellings, with the same hardwired-plus-battery-backup standard for new construction and permitted alterations.