Top-rated generator install pros.

Get matched with top generator install pros in Crystal Lake, IL

There are 9 highly-rated local generator install pros.

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Find Generator install pros in Crystal Lake

Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

New on AngiNew on Angi
Approved Pro

Tri-State Water, Power & Air

New on AngiNew on Angi
Approved Pro
98 local quotes requested
33 years of experience

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.


Avatar for Blazer Electric Co

Blazer Electric Co

4.69(
360
)
Approved Pro

Blazer Electric Co

4.69(
360
)
Approved Pro
Customers say: Quality work
417 local quotes requested
38 years of experience

We offer complete electrical service for residential and commercial properties. We will help you to add something new, or improve your existing system. With over 27 years of experience in the industry, we offer thorough practical and theoretical knowledge of electrical systems. Expert trouble-shooting and repairs. 4 employees. No subs. Cost is determined by the job. No travel charges. No after hours charges. Award winning.

"Blazer installed many wifi enabled light switches. Work was done quickly and professionally and have not had any post-installation issues since the install."

Adam E on July 2025

We offer complete electrical service for residential and commercial properties. We will help you to add something new, or improve your existing system. With over 27 years of experience in the industry, we offer thorough practical and theoretical knowledge of electrical systems. Expert trouble-shooting and repairs. 4 employees. No subs. Cost is determined by the job. No travel charges. No after hours charges. Award winning.

"Blazer installed many wifi enabled light switches. Work was done quickly and professionally and have not had any post-installation issues since the install."

Adam E on July 2025


Avatar for Toptec Heating, Cooling, Plumbing & Electrical, Inc.

Toptec Heating, Cooling, Plumbing & Electrical, Inc.

4.56(
540
)
Approved Pro

Toptec Heating, Cooling, Plumbing & Electrical, Inc.

4.56(
540
)
Approved Pro
Customers say: Super punctual
235 local quotes requested
32 years of experience

TOPTEC Heating, Cooling, Plumbing & Electrical, Inc. is a family-owned Home Comfort Services company since 1993 servicing the northern suburbs with locations in Libertyville and McHenry, IL. TOPTEC integrates TOP quality, ethical practices and skillsets with expertise in today’s TEChnology to service and sell solutions designed in mind with comfort, reliability and performance. Products and Services Services available from TOPTEC include all plumbing, hot water, sewer & drain service needs, heating and air conditioning design and installation including forced air, boilers and ductless systems, HVAC servicing of all types of equipment, electrical services, duct & dryer vent cleaning and maintenance agreements for peace of mind. Our Plumbing & Sewer division provides camera inspections, rodding, hydrojetting, sewer repairs, water heaters, sump & ejector pumps, and servicing of all pipes and plumbing fixtures Our HVAC division provides installation and servicing of Furnaces, Air Conditioners, Heat Pumps, Boilers, ductless systems, Humidifiers, Air Cleaners, dehumidification and fresh air solutions. Our Electrical division installs and services electrical distribution panels, EV chargers, backup generators, electrical rewiring, switches, outlets and lighting fixtures. Specialized expertise includes endless hot water systems, geothermal energy savings solutions, ventilation & airflow analysis along with balancing/zoning, condo and apartment multi-building heating/cooling systems installation and services, and comprehensive indoor air quality solutions for residential and commercial customers.

"I had my air ducts cleaned by TopTec and couldn’t be more impressed. Mostapha and Jesus were the technicians, and they were both fantastic — super professional, friendly, and incredibly thorough. They took the time to explain the process, answered all my questions, and treated my home with care and respect. The results speak for themselves. If you're considering duct cleaning, don’t look any further. TopTec is the real deal!"

CINDY T on September 2025

TOPTEC Heating, Cooling, Plumbing & Electrical, Inc. is a family-owned Home Comfort Services company since 1993 servicing the northern suburbs with locations in Libertyville and McHenry, IL. TOPTEC integrates TOP quality, ethical practices and skillsets with expertise in today’s TEChnology to service and sell solutions designed in mind with comfort, reliability and performance. Products and Services Services available from TOPTEC include all plumbing, hot water, sewer & drain service needs, heating and air conditioning design and installation including forced air, boilers and ductless systems, HVAC servicing of all types of equipment, electrical services, duct & dryer vent cleaning and maintenance agreements for peace of mind. Our Plumbing & Sewer division provides camera inspections, rodding, hydrojetting, sewer repairs, water heaters, sump & ejector pumps, and servicing of all pipes and plumbing fixtures Our HVAC division provides installation and servicing of Furnaces, Air Conditioners, Heat Pumps, Boilers, ductless systems, Humidifiers, Air Cleaners, dehumidification and fresh air solutions. Our Electrical division installs and services electrical distribution panels, EV chargers, backup generators, electrical rewiring, switches, outlets and lighting fixtures. Specialized expertise includes endless hot water systems, geothermal energy savings solutions, ventilation & airflow analysis along with balancing/zoning, condo and apartment multi-building heating/cooling systems installation and services, and comprehensive indoor air quality solutions for residential and commercial customers.

"I had my air ducts cleaned by TopTec and couldn’t be more impressed. Mostapha and Jesus were the technicians, and they were both fantastic — super professional, friendly, and incredibly thorough. They took the time to explain the process, answered all my questions, and treated my home with care and respect. The results speak for themselves. If you're considering duct cleaning, don’t look any further. TopTec is the real deal!"

CINDY T on September 2025


Avatar for Accent Tel USA

Accent Tel USA

4.89(
9
)
Approved Pro

Accent Tel USA

4.89(
9
)
Approved Pro
Customers say: Quick response
16 years of experience
Free onsite estimate

Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.

"Telephone System - Install or Upgrade - For Business "

Anthony O on September 2025

Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.

"Telephone System - Install or Upgrade - For Business "

Anthony O on September 2025


Amp Electric & Power, LLC

4.99(
39
)
Approved Pro

Amp Electric & Power, LLC

4.99(
39
)
Approved Pro
Customers say: True professional
6 years of experience
Free onsite estimate

At AMP Electric & Power LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I experienced great, clear, consistent communication throughout the process with Allin. Appreciated all his attention to detail. Everything was timely. I'd work with him again for sure!"

Ron A on September 2025

At AMP Electric & Power LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I experienced great, clear, consistent communication throughout the process with Allin. Appreciated all his attention to detail. Everything was timely. I'd work with him again for sure!"

Ron A on September 2025


Avatar for O'Carroll Electrical Contracting

O'Carroll Electrical Contracting

5.00(
1
)
Approved Pro

O'Carroll Electrical Contracting

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
31 years of experience

Chicagoland Union Electrical Contractor with over 100 years combined experience in the commercial and industrial sectors. O'Carroll Electrical Contracting is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! ocarrollelectric.com

"They did a very good job. They are a great company."

Ryan F on August 2021

Chicagoland Union Electrical Contractor with over 100 years combined experience in the commercial and industrial sectors. O'Carroll Electrical Contracting is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! ocarrollelectric.com

"They did a very good job. They are a great company."

Ryan F on August 2021


ICJ1 LLC

New on AngiNew on Angi
Approved Pro

ICJ1 LLC

New on AngiNew on Angi
Approved Pro
Free onsite estimate
Emergency services offered

I provide professional handyman and low-voltage services, specializing in: • CCTV camera installation and upgrades • Access points (AP) and internet/network setup • Network configuration and troubleshooting (Cat6 and fiber) • Building rewiring and low-voltage system integration • Ekahau-certified Wi-Fi design and testing Currently, I work as a subcontractor with several major companies on commercial projects, while also taking on residential jobs independently. I’m dedicated to delivering reliable, high-quality installations and efficient troubleshooting for all network and security systems.

I provide professional handyman and low-voltage services, specializing in: • CCTV camera installation and upgrades • Access points (AP) and internet/network setup • Network configuration and troubleshooting (Cat6 and fiber) • Building rewiring and low-voltage system integration • Ekahau-certified Wi-Fi design and testing Currently, I work as a subcontractor with several major companies on commercial projects, while also taking on residential jobs independently. I’m dedicated to delivering reliable, high-quality installations and efficient troubleshooting for all network and security systems.


Avatar for Rhodium Contractors

Rhodium Contractors

4.17(
6
)
Approved Pro

Rhodium Contractors

4.17(
6
)
Approved Pro
Customers say: Quality work
11 years of experience
Free onsite estimate

At Rhodium Contractors we specialize in indoor & outdoor home renovation, as well as general handymen work. We are strongly committed to providing high-quality work and customer service. We offer free estimates and will work with you side by side on every aspect along the way. We uphold a high standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. There is no job too big, or too small for our team. Call in today and let us put our experience to work for you!

"did a good job"

Alicia J on May 2024

At Rhodium Contractors we specialize in indoor & outdoor home renovation, as well as general handymen work. We are strongly committed to providing high-quality work and customer service. We offer free estimates and will work with you side by side on every aspect along the way. We uphold a high standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. There is no job too big, or too small for our team. Call in today and let us put our experience to work for you!

"did a good job"

Alicia J on May 2024


Avatar for DMT Unlimited, Inc.

DMT Unlimited, Inc.

4.98(
41
)
Approved Pro

DMT Unlimited, Inc.

4.98(
41
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
9 years of experience

We can take on a wide range of residential and commercial low voltage / electrical projects which might include the design and installation of a high end home theater system or just helping set up your new wireless home network. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and always guarantee your satisfaction.

"I had a electrical switch that kept overloading. I spoke to Dewayne in the morning and told him I was going to see replacing an outlet would fix the issue. He told me that was fine and not only told me to call him if it didn't fix the issue, but also offered to answer questions if I ran into difficulties. I wound up having Dewayne come out as my simple fix didn't work. Even though I called him again in the afternoon, he still came out the same day and found there was a short somewhere in one of the rooms. He was there for a while trying to locate the short and was able to get my problem resolved and got the switch to stop overloading. He was very friendly and explained everything he was doing as I wanted to understand. On top of that, he was very upfront with the potential costs and was willing to give me an idea of what my job might cost, given the likely issue. This extremely helpful and was unlike another company who only told me they priced the work by job!"

Scott F on June 2025

We can take on a wide range of residential and commercial low voltage / electrical projects which might include the design and installation of a high end home theater system or just helping set up your new wireless home network. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and always guarantee your satisfaction.

"I had a electrical switch that kept overloading. I spoke to Dewayne in the morning and told him I was going to see replacing an outlet would fix the issue. He told me that was fine and not only told me to call him if it didn't fix the issue, but also offered to answer questions if I ran into difficulties. I wound up having Dewayne come out as my simple fix didn't work. Even though I called him again in the afternoon, he still came out the same day and found there was a short somewhere in one of the rooms. He was there for a while trying to locate the short and was able to get my problem resolved and got the switch to stop overloading. He was very friendly and explained everything he was doing as I wanted to understand. On top of that, he was very upfront with the potential costs and was willing to give me an idea of what my job might cost, given the likely issue. This extremely helpful and was unlike another company who only told me they priced the work by job!"

Scott F on June 2025


Nighthawk Electric

New on AngiNew on Angi
Approved Pro

Nighthawk Electric

New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

Nighthawk Electric Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

Nighthawk Electric Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

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Generator Install questions, answered by experts

Generator size requirements vary wildly among properties, but typical generator sizes are listed below based on home square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14kW

  • 2,500 sq ft: 12–16kW

  • 3,000 sq ft: 16–20kW+

Unfortunately, home square footage isn’t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you’d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.

The cost to install a whole-house generator averages at $5,200, but costs can range from $1,500 to $8,900, depending on the type and size of the generator, and the labor required to install it. To find the best deal while still ensuring the unit meets all the needs of your household, hire an electrician to calculate the electrical load of your must-have appliances and electronics beforehand so you don’t pay for more power than you need. As always, be sure to get at least three quotes to find the ideal fit for your needs and budget.

No, you shouldn’t use an extension cord to plug a generator directly into your home without using a transfer switch. That’s because systems like pumps and HVAC fans need a steady power source that might not be available directly from your generator alone. If you bypass the circuit breaker box, you risk damaging your electrical system, creating a risk of electrical fire or electrical shock to you or any workers repairing lines on your local electrical grid.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

The Crystal Lake, IL homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.