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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Outdated or unsafe wiring can lead to power failures, code violations, or even serious fire risks.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Types of Outdated Wiring That Might Be in Your Home

If your home was built before the 1980s, there’s a chance it still contains outdated or unsafe wiring.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If your home still relies on any of these outdated materials, it’s time to take action.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 1096 reviews
Bob Rozycki
2 days ago
Yesterday we had our furnace, air conditioning unit, air filter system and whole house humidifier replaced. Alex Florita and Wiktor Kruzel were the two technicians who removed the old equipment and installed the new products. To say the installation was flawless, incredibly clean and perfectly done would be a gross understatement. These craftsmen did a fantastic job, were very careful in our home and answered all of our questions completely. We , as usual with Althoff, were totally satisfied. Today, Jesse Hernandez from Althoff came to us to replace our water heater. He was incredible. He was friendly, professional, and went way beyond my expectations. He answered every one of our questions, provided us with advice on how to best use the equipment and did an outstanding installation of our new tankless water heater. We have been customers of Althoff Home Services for over thirty years Over that time we have worked with many technicians and staff members to address our needs. I can say, without reservation, that all of these people met or exceeded our expectations. Jesse, Alex and Wiktor FAR exceeded those expectations. Jesse is an incredible technician. And what a truly nice person. Totally outstanding in every way. Bob and Sharon Rozycki
Gary Downing
3 days ago
I had a plumbing issue. I called and they had sent Mat out in a few hours and he fixed it was thorough and explained the cost to me and what he was doing. I would recommend this place to anyone needing plumbing service.
Karen Pieroni
4 days ago
I've never had such good service as Althoff brings. Exceeds my expectations every visit.
Donna Borman
7 days ago
We have been using Althoff Home Services for ALL of our plumbing, HVAC and electrical needs for many years now (after 2 bad experiences with another company). Althoff is a family owned & operated company and it shows in their professionalism, kind and courteous approach and the steps they take to make sure we feel like our job is their only priority. Their pricing is fair, work is thorough and absolute top-quality! Highly recommend!
Ginda Owens
2 weeks ago
Seasonal maintenance on boiler and hydroponic heating system was done, and water heater was checked and flushed. Excellent service. Thank you Brian!
Stash Stanton
2 weeks ago
On time arrival for a new Trane furnace installation. Technicians were polite, friendly and did an expedient professional installation. Cleaned up before they left. I was impressed as expected with Althoff Ind. installers. Thank you for a job well done!
Lyn Cablk
1 month ago
Altoff's service is always excellent. We've never been disappointed and our history with them goes back 28 years, ever since we moved to this community!
tiffany foreman
1 month ago
Mark was friendly, professional and thorough. He did a great job fixing and cleaning my AC unit. He took time to look everything over and made recommendations for services in the future. I appreciated his advice and attention to detail. I would definitely recommend him!
John Cadwell
1 month ago
AC tune-up - very thorough.
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.
Lois
1 month ago
I was out of the state when my son texted about the water leak in the basement. Althoff responded promptly and resolved the issue. So happy with the service they provide!
Laura Frayn
1 month ago
My A/C stopped working due to an unusual problem. Edwin used excellent analytical skills to find the solution. He was professional, thorough, and an excellent communicator. I highly recommend Edwin and Althoff
Greg Vachon
1 month ago
We had new a/c compressor and attic fan unit installed in the spring. Team was efficient and did a great job. Completed just as stated. Electricity bill went from above average for neighbors to below average according to ComEd report. It has been a lot of savings (plus house is cool - old one wasn't working well). Technicians have been wonderful in ensuring working just right (Ryan Staral, thanks! ... Brian Pulaski, thanks!). The staff calling us for our maintenance check (free with install) were so polite and accommodating. Really stellar service!
Mark Palmer
1 month ago
Jon at Althoff was a lifesaver. Had a leak that several other companies were unable to fix. Jon had a great attitude and resolved my problem quickly. I will be using Althoff in the future.
Mark Paszkiet
2 months ago
HVAC check-up
Jackie Dugger
2 months ago
Erik was quick, kind, and clean. Excellent service as part of my regular AC maintenance plan.
Althoff just finished the second job at our home this year. They do everything at the highest possible level. Great workmanship with great attitudes. Would recommend!!
Janet
2 months ago
Brian was our tech at my dad's place. He did an HVAC checkup. My 99 yr old dad wanted to go to the basement with Brian so she could see what Brian recommended. He took the time to explain everything to dad, which I thought was so nice, given the fact it took dad awhile to get down the stairs! Great service.
Randy Malin
2 months ago
Jim our tech was amazing Explained everything so we understood everything he was doing Very professional and knowledgeable! Thank you Jim
Jim Marks
3 months ago
Very good explanation of what needs more immediate attention if anything, or what could wait.
Becki Parsons
3 months ago
Todd was very nice and knew what he was talking about. Suggested things we can do. He was very pleasant to talk to and we would love to request him every time we to service our home. 5 stars and more!!!!
Steve S.
3 months ago
Would highly recommend Althoff for your electrical needs. Our tech. Scott was friendly, efficient and professional. He explained exactly what he was doing and the need for safety repairs to our electrical panel. Great job!!
Susan Richardson
3 months 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
Fred Ichinose
3 months ago
Super responsive, communicative, informative, friendly, competitive and got the job done well. Highly recommended.
L
3 months ago
We are so pleased with the work Victor and Braden did-- professional, friendly, fast, and with great explanations. We could not be happier with their work, as we always are with your company's work. The Daikin unit is working perfectly, keeping our open concept kitchen, family room, music room, and dining room a uniform, warm temperature. THANKS!!!
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