Modern homes in Northbrook, Skokie, and Evanston are packed with sensitive electronics: smart thermostats, Wi-Fi-connected appliances, heat pumps, and now — electric vehicles. A single power surge can destroy thousands of dollars in equipment in milliseconds. And if you’ve just invested in an EV, you need more than a standard outlet to charge it efficiently.
MMDS is a licensed electrical contractor serving the North Shore and northwest suburbs. This guide covers two of the most common electrical upgrades we install: whole-house surge protection and Level 2 EV charger installation.
Part 1: Whole-House Surge Protection
What Is a Whole-House Surge Protector?
A whole-house surge protector (also called a surge protection device or SPD) installs directly at your electrical panel. It intercepts voltage spikes before they reach your home’s wiring and connected devices. Think of it as a bouncer for your electrical system — it lets normal power through and blocks the dangerous stuff.
This is different from power strips. Plug-in surge protectors only protect what’s plugged into them, and they degrade over time without warning. A whole-house SPD protects every circuit in your home, including hardwired appliances like your HVAC system, water heater, and oven.
Why Northbrook and Skokie Homes Need Surge Protection
The north suburbs experience frequent power surges from:
- Lightning strikes: Chicago averages 25–30 thunderstorm days per year. A nearby lightning strike can send massive surges through power lines.
- Utility grid switching: ComEd regularly switches power feeds and substations. Each switch can produce a small surge.
- Large appliance cycling: Your own AC compressor, heat pump, or dryer motor creates small surges every time it starts and stops. Over time, these micro-surges degrade electronics.
- Tree and debris contact: High winds and storms cause tree branches to contact power lines, creating surges before the outage.
The real cost of not having surge protection:
- Smart thermostat: $200–$500
- Furnace control board: $300–$800
- Refrigerator control board: $400–$700
- Home office equipment: $1,000–$5,000
- Heat pump inverter board: $500–$1,500
- EV charger electronics: $300–$600
A single major surge event can destroy $2,000–$10,000+ in equipment. Whole-house surge protection costs a fraction of that.
Whole-House Surge Protector Cost (2026)
| Protection Level | Cost (Installed) | Features |
|---|---|---|
| Basic (Type 2 SPD) | $300 – $500 | Panel-mount, 40,000–60,000 amp surge rating |
| Mid-Range (Type 1+2 combo) | $500 – $800 | Higher surge rating, LED status indicator |
| Premium (Type 1+2 + extended warranty) | $700 – $1,200 | Highest protection, connected equipment warranty |
Installation takes 1–2 hours and doesn’t require any changes to your existing wiring.
Part 2: Level 2 EV Charger Installation
Why You Need a Level 2 Charger
If you’re charging your electric vehicle on a standard 120V outlet (Level 1), you’re getting about 3–5 miles of range per hour. That means a full charge can take 40–60 hours. For most EV owners in Northbrook, Skokie, or Evanston, that’s not practical for daily driving.
A Level 2 charger (240V) delivers 25–35 miles of range per hour, fully charging most EVs overnight in 6–10 hours. It’s the difference between “I hope I charged enough” and “I know I’m fully charged every morning.”
EV Charger Installation Requirements
A Level 2 EV charger needs:
- Dedicated 240V circuit: 40-amp or 50-amp, depending on the charger
- Proper wire gauge: 6-gauge or 8-gauge copper, depending on circuit size and run length
- GFCI protection: Required by current NEC code for EV charging
- Adequate panel capacity: Your electrical panel needs available amperage for the new circuit
Does Your Panel Have Enough Capacity?
This is the #1 question we get from Northbrook and Skokie homeowners. Here’s how to think about it:
- 200-amp panel: Almost always has enough capacity for a Level 2 charger, even with a heat pump, AC, and electric dryer. This is the standard for most modern homes.
- 150-amp panel: May have enough capacity depending on your current load. We’ll perform a load calculation to confirm.
- 100-amp panel: Likely needs an upgrade to 200-amp service before adding an EV charger. Many older Skokie and Evanston homes still have 100-amp panels.
If you also have a heat pump or are planning one, a 200-amp panel upgrade may be the smart move — it handles both the heat pump and EV charger with room to spare.
EV Charger Installation Cost in the Chicago Suburbs (2026)
| Component | Cost Range | Notes |
|---|---|---|
| Level 2 charger unit | $400 – $800 | ChargePoint, Emporia, JuiceBox, Tesla Wall Connector |
| Basic installation (panel in garage) | $500 – $1,000 | Short wire run, available panel capacity |
| Extended installation (panel far from garage) | $1,000 – $2,500 | Long wire run, trenching, or sub-panel needed |
| Total typical installation | $900 – $2,000 | Most homes fall in this range |
| Panel upgrade to 200-amp (if needed) | $2,500 – $4,500 | Includes new panel, meter base, ComEd coordination |
Rebates and incentives: Check with ComEd for current EV charger rebates. Illinois also offers EV-related incentives that can offset installation costs. MMDS can help you identify applicable programs.
Financing: Sunbit and PowerPay financing available for panel upgrades and charger installations.
Popular EV Chargers We Install
- Tesla Wall Connector: Best for Tesla owners — up to 48 amps, sleek design, Wi-Fi enabled
- ChargePoint Home Flex: Universal (works with all EVs), adjustable amperage, energy tracking app
- Emporia Smart Charger: Budget-friendly with smart features, integrates with Emporia energy monitoring
- JuiceBox 48: Smart charging with TOU scheduling, works with all EVs
- Grizzl-E Classic: Rugged, affordable, no-frills reliable option for outdoor installation
Combining Surge Protection with EV Charger Installation
Here’s what we recommend for homeowners getting an EV charger installed: add whole-house surge protection at the same time. Here’s why:
- EV chargers contain sensitive electronics that surges can damage
- We’re already working in your panel, so adding an SPD takes minimal extra time
- You protect your entire home’s electronics — not just the charger
- Combined installation saves on labor costs
Many of our Northbrook and Skokie customers bundle the two, and we offer a discount on the surge protector when installed with an EV charger.
Permit and Code Requirements
Both surge protector and EV charger installations require permits in Northbrook, Skokie, and Evanston. Key code requirements include:
- NEC 2023 compliance: GFCI protection for EV charging circuits, proper wire sizing
- Village inspections: Most municipalities require an electrical inspection after installation
- ComEd coordination: Required for panel upgrades (meter disconnect/reconnect)
MMDS handles all permitting and inspections as part of every electrical project. You don’t need to visit the building department or coordinate with ComEd — we take care of it.
Frequently Asked Questions
Can I install an EV charger outdoors?
Yes. Most Level 2 chargers are rated for outdoor installation (NEMA 4 or NEMA 3R enclosure). We install chargers in garages, carports, and on exterior walls. Outdoor installations may require a weatherproof outlet or a hardwired connection.
How much does an EV charger add to my electric bill?
Charging a typical EV at home costs $30–$60/month based on average driving (1,000 miles/month) and ComEd residential rates. That’s roughly equivalent to $1.00–$1.50 per gallon of gas equivalent. Using ComEd’s time-of-use rate and charging overnight can reduce costs further.
Do I need a separate panel for the EV charger?
Usually not. Most 200-amp panels have enough capacity. If your panel is full or undersized, we may install a small sub-panel or recommend a main panel upgrade. We’ll assess this during the free estimate.
How long does a whole-house surge protector last?
Quality SPDs last 10–20 years under normal conditions. However, a single major surge event (like a nearby lightning strike) can use up the protection capacity. Most premium models have LED indicators that show when they need replacement.
Is a whole-house surge protector worth it if I already use power strips?
Absolutely. Power strips protect individual devices but not your hardwired appliances (HVAC, oven, dryer). They also degrade over time without warning. A whole-house SPD provides a first line of defense for everything, and your power strips provide a second layer for plugged-in electronics. The two-tier approach is ideal.
Get a Free Electrical Estimate in Northbrook or Skokie
Whether you need surge protection, an EV charger, a panel upgrade, or all three, MMDS provides expert electrical services across Northbrook, Skokie, Evanston, Glenview, Wilmette, and the entire North Shore.
Call (847) 221-6280 or request your free estimate online. Licensed, insured, and financing available through Sunbit and PowerPay.
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