300 Amp Service Upgrades for Larger Homes
Larger Suffolk County homes — especially those with multiple HVAC systems, pools, EV chargers, ADUs, or large additions — often need 300 or 400 amp service. We design and install commercial-grade residential service upgrades.
- Licensed & Insured
- Local Suffolk County
- Fast Scheduling
Trusted by homeowners across Suffolk County and Long Island
300 Amp Service Upgrade in Suffolk County, NY
- Supports multiple high-draw systems
- Ideal for additions, ADUs, and pool houses
- Future-proofs homes for full electrification
- Permit drawings & utility coordination included
When you need 300+ amps
Homes over ~4,000 sq ft, multiple HVAC zones, EV chargers + pool heater, or planned additions usually exceed 200A capacity.
Engineering & permitting
Larger services require load calculations and PSEG-LI coordination — all handled by our licensed electricians.
Ready for Your 300 Amp Service Upgrade?
Get a fast, no-obligation quote from a licensed Suffolk County electrician.
Frequently Asked Questions
Is this overkill?
Not if you're electrifying. Multiple EVs, heat pumps, and induction cooking quickly add up.
Get Your 300 Amp Service Upgrade Quote Today
Serving homeowners across Suffolk County, NY with safe, reliable electrical work.