Smoke & CO Detector Installation in Bethesda, MD
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Cost Range
$100–$400
Local Pros
129 available
Overview
Install or replace smoke detectors and carbon monoxide detectors throughout your home. Includes hardwired interconnected systems where one alarm triggers all units, plus battery backup.
Bethesda Climate Considerations (mixed humid)
Common Signs You Need Smoke & CO Detector Installation
- • Detectors chirping or beeping
- • Detectors older than 10 years
- • Missing detectors in bedrooms
- • No carbon monoxide detectors
- • Moving into a new home
- • Failed home inspection
Smoke & CO Detector Installation Cost in Bethesda
Low
$100
Average
$250
High
$400
DIY vs. Call a Pro
Battery-operated detectors are simple to install with screws or adhesive mounts. Place smoke detectors on every level, inside each bedroom, and outside sleeping areas. CO detectors go near bedrooms and fuel-burning appliances.
Call a professional when:
Call an electrician for hardwired interconnected systems, if your code requires hardwired detectors, or if you need new wiring run to detector locations.
Electricians in Bethesda
L & M Electric & Plumbing LLC
Alexandria, VA
(703) 750-1222Nasr Electric
Alexandria, VA
(703) 675-1439Carmona Electric LLC
Alexandria, VA
(571) 492-8491Electricians A+ Ratings
Alexandria, VA
(703) 608-8481Founding Member
Premium spot in Bethesda
Ambassador
Lead the Bethesda community
Founding Member
Premium spot in Bethesda
Bethesda Housing Market
Median Home Price
$1,300,000
Homes for Sale
66
Price per Sq Ft
$497
Local Pros
600
Home Service Professionals Near Bethesda
Median Household Income
$191,348
Median Home Value
$1,129,700
Median Rent
$2,437/mo
Homeownership Rate
65.1%
Population
67,403
Median Year Built
1970
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
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Smoke & CO Detector Installation
Date
April 2026
Cost
$250
Vendor
Your local pro
Warranty
10-year material warranty
Bethesda average: $100–$400
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Warranty Details
10-year material warranty
Auto-Checkup Created
"Detector Test" — every 6 months
Property Health Score
Good
electrical category +15 pts(68 → 83)
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
Maintenance Plan for Bethesda
Recommended Maintenance Plan — Bethesda, Maryland
Key Risks
- • High heat & humidity spells
- • Ice storms
Schedule
Visual inspection (DIY)(DIY)
Professional smoke & co detector installation
Estimated: $100–$400
Emergency inspection for damage
Estimated: $100–$300
Plan for full replacement
Estimated: $300–$1,200
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I found 129 electricians in your area. Here are the top results:
Smith & Sons
Connectedelectrician
J&R Home Services
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Maryland Regulations
Building Code: IRC 2021
Seller Disclosure: Sellers must complete a Residential Property Condition Disclosure and Disclaimer Statement.
Natural Disaster Risks: Hurricanes, Flooding, Nor'easters