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PGH ELECTRIC

5.00(
1
)
Approved Pro

PGH ELECTRIC

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

We are 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.

"I highly recommend PGH Electric. Pablo is very professional and detailed with his work. We are happy with the results. Very impressed with his knowledge and his efficiency in completing the job in such a timely manner."

Maria D on August 2024

We are 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.

"I highly recommend PGH Electric. Pablo is very professional and detailed with his work. We are happy with the results. Very impressed with his knowledge and his efficiency in completing the job in such a timely manner."

Maria D on August 2024


Avatar for Trinity Electric Services Inc.

Trinity Electric Services Inc.

5.00(
5
)
Approved Pro

Trinity Electric Services Inc.

5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1 years of experience

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. TRINITY ELECTRIC SERVICES INC strives to maintain our reputation as a high quality, very service oriented company with our main focus being on customer satisfaction.

"Josué is an amazing electrician and did a fantastic job with all the work required at our home, including upgrading wiring from the main panel to subpanel, installing additional 50 amp and 15 amp outlets, ripping out knob and tube, and installing new wiring and circuit breakers for the bathroom and kitchen we remodeled. Josué is extremely experienced, having started as an electrician for commercial and industrial building, and is very knowledgeable both about residential electrical code and best practices. I would absolutely recommend him!"

Andrew Z on October 2024

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. TRINITY ELECTRIC SERVICES INC strives to maintain our reputation as a high quality, very service oriented company with our main focus being on customer satisfaction.

"Josué is an amazing electrician and did a fantastic job with all the work required at our home, including upgrading wiring from the main panel to subpanel, installing additional 50 amp and 15 amp outlets, ripping out knob and tube, and installing new wiring and circuit breakers for the bathroom and kitchen we remodeled. Josué is extremely experienced, having started as an electrician for commercial and industrial building, and is very knowledgeable both about residential electrical code and best practices. I would absolutely recommend him!"

Andrew Z on October 2024


Avatar for Dalcon Electric

Dalcon Electric

4.56(
406
)
Approved Pro

Dalcon Electric

4.56(
406
)
Approved Pro
Super Service Award
Customers say: Quality work
827 local quotes requested
32 years of experience

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Clear and knowledgeable on what my request"

Howard Y on September 2025

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Clear and knowledgeable on what my request"

Howard Y on September 2025


Avatar for TECHINSF CONSULTING LLC

TECHINSF CONSULTING LLC

5.00(
5
)
Approved Pro

TECHINSF CONSULTING LLC

5.00(
5
)
Approved Pro
25 local quotes requested
22 years of experience

We specialize in professional Low-Voltage Wiring for homes and businesses, including Ethernet and phone cabling, speaker wiring, coax, fiber, underground wiring, and wire testing. In addition to clean, reliable cabling, we also offer full-service IT support, from WiFi systems and networking to cloud services, desktop help, and security solutions. Whether you need structured cabling, door access systems, TV mounting, or expert IT help, we deliver fast, dependable service with both remote and on-site options.

We specialize in professional Low-Voltage Wiring for homes and businesses, including Ethernet and phone cabling, speaker wiring, coax, fiber, underground wiring, and wire testing. In addition to clean, reliable cabling, we also offer full-service IT support, from WiFi systems and networking to cloud services, desktop help, and security solutions. Whether you need structured cabling, door access systems, TV mounting, or expert IT help, we deliver fast, dependable service with both remote and on-site options.


Avatar for Bluewire Electric

Bluewire Electric

5.00(
5
)
Approved Pro

Bluewire Electric

5.00(
5
)
Approved Pro
65 local quotes requested
1 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details. We look forward to building a lasting relationship and guarantee your satisfaction!

"The owner of BlueWire Electric Daniel T. Was extremely professional. I hired him to wire up an ADU that I am building and to wire up the panel. He was very informative and up to date on the current electrical code and title 24. I will definitely be a returning customer and look forward to have BlueWire Electric do all my future electrical work. "

Carlos R on September 2025

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details. We look forward to building a lasting relationship and guarantee your satisfaction!

"The owner of BlueWire Electric Daniel T. Was extremely professional. I hired him to wire up an ADU that I am building and to wire up the panel. He was very informative and up to date on the current electrical code and title 24. I will definitely be a returning customer and look forward to have BlueWire Electric do all my future electrical work. "

Carlos R on September 2025


Avatar for Glo-Electric

Glo-Electric

4.43(
7
)
Approved Pro

Glo-Electric

4.43(
7
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
321 local quotes requested

Family and veteran owned and operated company, professional trained, drug tested, background checked, electricians providing residential and commercial service, repair and new installations servicing the greater bay area with the best service in the industry.

"They did quality work on a tight timeline"

Jocelyn T on May 2024

Family and veteran owned and operated company, professional trained, drug tested, background checked, electricians providing residential and commercial service, repair and new installations servicing the greater bay area with the best service in the industry.

"They did quality work on a tight timeline"

Jocelyn T on May 2024


Avatar for BARAK ELECTRIC

BARAK ELECTRIC

4.80(
5
)
Approved Pro

BARAK ELECTRIC

4.80(
5
)
Approved Pro
10 local quotes requested
2 years of experience

Here at Barak Electric with over 20+ years of experience we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call us today!

"Install circuit breaker and 240 outlet in preparation for new electric tank water heater. Took the time to consult with water heater contractor to make sure the correct parts were used, and placement of shutoff was done properly. Professional, prompt, and thorough. We are very pleased with the work, and would not hesitate to rehire and recommend to our friends and family."

Louis S on January 2025

Here at Barak Electric with over 20+ years of experience we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call us today!

"Install circuit breaker and 240 outlet in preparation for new electric tank water heater. Took the time to consult with water heater contractor to make sure the correct parts were used, and placement of shutoff was done properly. Professional, prompt, and thorough. We are very pleased with the work, and would not hesitate to rehire and recommend to our friends and family."

Louis S on January 2025


Energy On Electrical and Plumbing Inc

5.00(
2
)
Approved Pro

Energy On Electrical and Plumbing Inc

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Energy On Electrical and Plumbing 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.

"They are very good at what they do, I didn't have any problems, they did a great job, the price was fair, everything was working perfectly and everything was within the expected time frame and as agreed with no surprises at the end."

Robson F on April 2024

Energy On Electrical and Plumbing 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.

"They are very good at what they do, I didn't have any problems, they did a great job, the price was fair, everything was working perfectly and everything was within the expected time frame and as agreed with no surprises at the end."

Robson F on April 2024


Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4.64(
655
)
Approved Pro

Service Champions Heating & Air Conditioning

4.64(
655
)
Approved Pro
Super Service Award
Customers say: Super punctual
605 local quotes requested
22 years of experience

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"

Lain L on September 2025

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"

Lain L on September 2025


Avatar for Value Electrical Construction Inc.

Value Electrical Construction Inc.

4.88(
8
)
Approved Pro

Value Electrical Construction Inc.

4.88(
8
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 local quotes requested

Professionalism, courtesy and reliability are some of the few words that describe Value Electrical Construction. Each customer receives a personal attention that produces a quality of service unmatched. From simple to complex projects Value Electrical Construction is your neighborhood electrician. Electrical Contractor for Residential, Commercial and Lighting Design

"Val came & did the work; also asked him to check on my bedroom light, it was fast. really appreciate of"

JANICE B on March 2019

Professionalism, courtesy and reliability are some of the few words that describe Value Electrical Construction. Each customer receives a personal attention that produces a quality of service unmatched. From simple to complex projects Value Electrical Construction is your neighborhood electrician. Electrical Contractor for Residential, Commercial and Lighting Design

"Val came & did the work; also asked him to check on my bedroom light, it was fast. really appreciate of"

JANICE B on March 2019

Showing 1-10 of 50
Generator Install questions, answered by experts

Yes, whole-house generators run constantly for extended periods. Whole-house generators can run for longer periods of time than portable generators, but be careful. First, they may need regular applications of engine oil (as frequently as daily), depending on the engine design. Second, running constantly for several days will increase the wear and tear on the generator and shorten its lifespan.

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.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

As long as they have enough fuel, whole-house generators can run for weeks at a time (400 to 500 hours) without suffering too much wear and tear. However, this type of extensive use isn’t ideal if you want to extend the life of your generator.

Two important points. First, some generators may need you to periodically check oil levels every day or so and refill as necessary for safe operation. Second, if your generator uses a fuel tank, keep it regularly full so it doesn’t suddenly shut off. Many backup generators can run through a full tank in a day when they are powering large portions of a home.

When installed and used correctly, generators are safe to use. The most critical generator safety tips to keep in mind are:

  • Never use a portable generator inside an enclosed space, as the carbon monoxide exhaust it creates is lethal.

  • Never attempt to connect your generator to your home’s electrical panel independently; hire a professional for this dangerous job.

  • Never overload your generator by connecting more appliances than for which it’s rated; you can damage your generator and appliances or even cause a fire.

The San Mateo, CA homeowners’ guide to generator installs

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