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Electrical Wiring and Rewiring

Outdated or unsafe wiring can lead to power failures, code violations, or even serious fire risks. At Althoff Home Services, we provide professional electrical wiring and rewiring services for homeowners in Crystal Lake and the surrounding Chicago suburbs. Whether you’re remodeling your home, adding new appliances, or replacing old aluminum wiring, our licensed electricians ensure every job meets current safety standards and local codes.

  • Family owned since 1961
  • We provide quotes before performing service
  • 100% satisfaction guarantee

Our team handles everything from small wiring repairs to complete home rewiring projects with precision and care. Let Althoff Home Services help protect your home and modernize your electrical system. Contact us today to schedule a consultation and get the expert wiring service your home deserves.

Proudly serving the Crystal Lake area for over 60 years! 

Types of Outdated Wiring That Might Be in Your Home

If your home was built before the 1980s, there’s a chance it still contains outdated or unsafe wiring. At Althoff Home Services, we frequently encounter older systems like knob-and-tube wiring, aluminum wiring, and cloth-insulated wires, all of which pose significant safety hazards. Knob-and-tube wiring, common in homes built before 1950, lacks grounding and can’t handle today’s electrical loads. Aluminum wiring, often used in the 1960s and ’70s, can become loose or overheat, increasing fire risk. Cloth-insulated wires deteriorate over time, exposing live conductors and raising the likelihood of shorts or electrical fires.

If your home still relies on any of these outdated materials, it’s time to take action. Our licensed electricians at Althoff Home Services offer professional inspections to assess your wiring’s condition and recommend safe, modern solutions. Upgrading your wiring isn’t just about code compliance, it’s about protecting your family and property from preventable electrical hazards.

When Do You Need a Full Home Rewiring?

A full home rewiring may seem like a major project, but in many cases, it’s the safest and most cost-effective solution long-term. At Althoff Home Services, we recommend rewiring if your home shows signs of frequent breaker trips, flickering lights, discolored outlets, or if your wiring is more than 40 years old. These symptoms often point to overloaded circuits, degraded insulation, or loose connections that can lead to fires or equipment failure.

Home rewiring is especially important if you’re planning major renovations or installing high-powered appliances like EV chargers, HVAC systems, or electric ranges. Old wiring simply wasn’t built to handle today’s electrical demands. Our team will work with you to develop a detailed plan, minimizing disruption while ensuring every outlet, fixture, and switch is safe and efficient. Serving Crystal Lake and surrounding suburbs, Althoff Home Services delivers rewiring solutions that future-proof your home and meet all current safety standards.

Let Licensed Electricians Handle New Wiring and Rewiring for Your Home

Electrical wiring is not a DIY job, it requires specialized knowledge, permits, and strict adherence to safety codes. At Althoff Home Services, our licensed electricians bring decades of experience to every project, whether you’re upgrading a single room or rewiring your entire home. We use high-quality materials, follow all local codes, and prioritize your safety at every step.

We’ve been family owned since 1961, and we proudly provide quotes before performing service to ensure transparency and trust. With our 100% satisfaction guarantee, you can feel confident that your home’s electrical system is in expert hands. If you’re unsure about the state of your wiring or planning upgrades, contact Althoff Home Services today for a professional assessment and reliable, code-compliant service.

What Are Other Homeowners Saying?

Excellent
Althoff Home Services4.8
Based on 1071 reviews
Very friendly and knowledgeable about anything I needed to know.
Steve Kolasa
4 days ago
Quality service and work !!! Clean and very informative about our AC and Furnace !!! Alex did a fantastic job !!!!
Catherine A
1 week ago
Scott was prompt, very pleasant and did a great job!
Gwen
1 week ago
Extremely pleased with this company and the employees I dealt with so far.
excellent service - professional and friendly. Andres was the best!
Daniel Bochneak
2 weeks ago
Regular interval preventive maintenance check-ups performed by a Althoff's HVAC professional assures that our HVAC system is safe and functioning with the level of efficiency necessary to maintain our household comfort and safety. We have used Althoff Home Services for several years and have always been extremely satisfied with their services. Our Althoff technician Scott is a trusted expert in his profession. We appreciate his diligence and attention to detail that has meaningfully contributed to our home's comfort & safety.
Jason Schumaker
2 weeks ago
Scott White is fantastic
Jim Andrulis
2 weeks ago
Althoff repairman advised me of a problem with my a/c. He gave me some options for repair and the cost estimates. They even sent another man to offer quotes for a whole system replacement. i appreciated the options with no pressure.
Cathy Wilkins
2 weeks ago
We had our A/C inspection today. Nick A on the Althoff Home Services A/C team arrived and checked everything inside and out. Nick was very courteous, polite, friendly and thorough. We were very pleased with his professionalism. This service is included in our annual membership. The office staff and technicians at Althoff Home Services are the reason we have had them servicing our homes since 2002.
Greg M.
2 weeks ago
Thorough check and clean of Furnace and Humidifier. The contact with the office and the work performed by Justin were both done in a professional manner. Thank you.
April Strong
2 weeks ago
He's friendly and efficient. The perfect combination!
Susan Richardson
3 weeks ago
I had a very nice young man for my technician. He checked and cleaned everything and told me all was well. Of course that made me happy. The technician was here to clean and check my heating system for the winter
Gary Newland
3 weeks ago
I appreciate the attention and professionalism. Thank you!
Mandy Bone
4 weeks ago
Althoff has helped us with our boiler system as well as our AC unit. They have repaired old units we had and even installed new ones when we needed. Everyone we worked with was kind, professional, and knowledgeable about the products.
Had difficult bulbs to replace and find they did it a short period of time and the installation was flawless
David Schaak
1 month ago
Very good and informative worker. You could tell that he enjoyed the work.
Melissa Mikos
1 month ago
Matthew was such a pleasure to work with. He explained everything in layperson terms. Which I appreciated because I was extremely stressed out from the whole issue at hand. He gave me several different options to deal with the water damage and diagnose the source of the problem. of the leak. In conclusion, I would and will go to Altoff for all my future plumbing needs.
Ouzelfalls
1 month ago
I recently switched to Altoff Services to do my annual A/C and Heater maintenance. They came this week to do the A/C. they did a thorough job in testing my A/C's cooling efficiency. they tested refrigerant levels.They removed the outside unit's shroud and thoroughly cleaned the unit. This was the first time anyone did that. I was very happy with the work they did.
Chris Warren
1 month ago
We use Althoff Home Services for almost all of our HVAC, Plumbing, and Electrical needs. Pros: - It is easy to schedule an appointment with them. If you are a member of their White Glove Club, you get priority scheduling. - They spend time explaining the work they perform and any recommendations they have. - Their pricing is transparent. Everything is quoted and sent via email, so you know what you are paying every time they come to your house. - Their employees do not work on commission, so there are no high-pressure sales tactics unlike some of their competitors. Cons: - Some of their services are a little expensive. I would hire a handyman to do things like re-seat a toilet or replace a faucet in lieu of hiring of one of their professional plumbers. - They charge to come out to your house to give pricing estimates, but will deduct this from your bill should you choose to use them. I highly recommend Althoff’s and their team of professional staff!
John Ruder
1 month ago
Always a pleasant experience when Todd comes for the annual inspection of the ROZ Valve. Polite, good conversation, explains what’s being done.
Logan Maughan
2 months ago
Quick and easy service, Nick was great. Their membership plan is really good too.
DAWN WADDICK
2 months ago
⭐️⭐️⭐️⭐️⭐️ I wholeheartedly recommend Althoff Home Services for all your heating, air-conditioning, plumbing, and electrical needs! With over 30 years of homeownership and countless service experiences, I can confidently say Althoff is the BEST. Their integrity, honesty, and customer-centric approach are unmatched. They're thorough, transparent, and genuinely care about building relationships. Although their service agreement costs a bit more, the exceptional service and personalized attention are worth every penny. They'll walk you through every step, show you the work, and offer valuable tips. I've been blown away by their performance, and I'm sure you will be too! Don't hesitate - give Althoff a try, and you'll see why they're the gold standard 👍
Cynthia K
2 months ago
Joe did A+ work on my plumbing job today.
Richard Elke
2 months ago
Scott was very professional. He explained all of our options and costs. He inspected our sub pump.
Kimberly Ritter
2 months ago
Timely, respectful and knowledgeable.
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