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Avatar for Albert Nahman Plumbing, Heating, and Cooling

Albert Nahman Plumbing, Heating, and Cooling

4.45(
686
)
Approved Pro

Albert Nahman Plumbing, Heating, and Cooling

4.45(
686
)
Approved Pro
Customers say: Super punctual
720 local quotes requested
44 years of experience

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 2025

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 2025


Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

4.66(
387
)
Approved Pro

Bell Brothers Plumbing Heating & Air

4.66(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
50 local quotes requested

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023


Pinnacle Energy Solutions-Unlicensed Contractor

5.00(
1
)
Approved Pro

Pinnacle Energy Solutions-Unlicensed Contractor

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

Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!

"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"

Greg N on August 2021

Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!

"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"

Greg N on August 2021


Avatar for Posert Energy Consulting

Posert Energy Consulting

4.72(
44
)
Approved Pro

Posert Energy Consulting

4.72(
44
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
16 local quotes requested

At Posert Energy Consulting, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe we can find the sources of high energy bills within an hour or two and set you on a path towards lower energy costs and energy independence. We are committed to eliminating greenhouse gas sources from residences as much as possible which includes our experience that about 2/3rd of the homes we visit have gas line leaks! We are experts, and will always keep you educated about the work process. We look forward to earning your business!

"Pete is fantastic! He called back promptly -- on a holiday -- and fit us in within 24 hrs. He did a home electrical audit, showed us how to read/interpret the smart meter and PG&E website re electrical usage, performed troubleshooting, and narrowed down the problem. Now we can hire an electrician because we know what the issue is! Great guy with a great personality and excellent customer service. Five out of five stars!!!!"

Jennifer L on May 2024

At Posert Energy Consulting, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe we can find the sources of high energy bills within an hour or two and set you on a path towards lower energy costs and energy independence. We are committed to eliminating greenhouse gas sources from residences as much as possible which includes our experience that about 2/3rd of the homes we visit have gas line leaks! We are experts, and will always keep you educated about the work process. We look forward to earning your business!

"Pete is fantastic! He called back promptly -- on a holiday -- and fit us in within 24 hrs. He did a home electrical audit, showed us how to read/interpret the smart meter and PG&E website re electrical usage, performed troubleshooting, and narrowed down the problem. Now we can hire an electrician because we know what the issue is! Great guy with a great personality and excellent customer service. Five out of five stars!!!!"

Jennifer L on May 2024


Avatar for BAZ Service Refrigeration

BAZ Service Refrigeration

4.94(
16
)
Approved Pro

BAZ Service Refrigeration

4.94(
16
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 local quotes requested

We are proud to offer fast, friendly, affordable and reliable service and installation for both residential and commercial equipment. We have the extensive experience and expertise to troubleshoot a wide range of equipment. Air Conditioning and Heating: We provide installation, repair, and replacement services for all brands of air conditioners, gas and heat pump systems, for both residential and commercial customers. Refrigeration We provide installation, repair, and replacement services for all refrigeration brands, both residential & commercial, including: wine cellars, walk-in boxes, produce coolers, ice machines, reach-in coolers, beverage coolers, and more. Maintenance We provide air balancing, efficiency testing, and required maintenance of refrigeration, gas, A/C, and heat pump systems for residential and commercial customers. Annual Inspections We inspect electrical disconnect boxes and test capacitors for proper rating and safety, inspect condenser coils and remove debris, and monitor refrigerant for proper operating pressures. Pre-Season Inspection We inspect both indoor and condenser coils, clean or replace existing air filters as needed, as well as test thermostats for proper operation.

"Good diagnosis and remedy."

Eugene C on April 2023

We are proud to offer fast, friendly, affordable and reliable service and installation for both residential and commercial equipment. We have the extensive experience and expertise to troubleshoot a wide range of equipment. Air Conditioning and Heating: We provide installation, repair, and replacement services for all brands of air conditioners, gas and heat pump systems, for both residential and commercial customers. Refrigeration We provide installation, repair, and replacement services for all refrigeration brands, both residential & commercial, including: wine cellars, walk-in boxes, produce coolers, ice machines, reach-in coolers, beverage coolers, and more. Maintenance We provide air balancing, efficiency testing, and required maintenance of refrigeration, gas, A/C, and heat pump systems for residential and commercial customers. Annual Inspections We inspect electrical disconnect boxes and test capacitors for proper rating and safety, inspect condenser coils and remove debris, and monitor refrigerant for proper operating pressures. Pre-Season Inspection We inspect both indoor and condenser coils, clean or replace existing air filters as needed, as well as test thermostats for proper operation.

"Good diagnosis and remedy."

Eugene C on April 2023


Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4.71(
619
)
Approved Pro

Service Champions Heating & Air Conditioning

4.71(
619
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
592 local quotes requested

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.

"The technicians, Chris F, Tyler H and Christian C, were friendly and personable. Great job on my new water heater! Chris got me 18 month financing with no interest. I would definitely use them again!"

Cindy F on June 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.

"The technicians, Chris F, Tyler H and Christian C, were friendly and personable. Great job on my new water heater! Chris got me 18 month financing with no interest. I would definitely use them again!"

Cindy F on June 2025


Avatar for Paradigm Shift Solar

Paradigm Shift Solar

No reviews yet

Paradigm Shift Solar

No reviews yet
3 years of experience

With over 7 years experience, we work with 5 of the top, most highly rated solar installers in the country. Unlike other solar companies, we are able to work with you to get you up to 3 competitive quotes to compare. No need to waste hours consulting with multiple solar sales people. One conversation. Three quotes. Our process starts with a quick 15 minute discovery call to determine exactly how much solar you need for your home. No more. No less.

With over 7 years experience, we work with 5 of the top, most highly rated solar installers in the country. Unlike other solar companies, we are able to work with you to get you up to 3 competitive quotes to compare. No need to waste hours consulting with multiple solar sales people. One conversation. Three quotes. Our process starts with a quick 15 minute discovery call to determine exactly how much solar you need for your home. No more. No less.



Avatar for CityWide Roofing INC

CityWide Roofing INC

1.00(
1
)

CityWide Roofing INC

1.00(
1
)
Customers say: Quick response
39 years of experience

Citywide Roofing is a full service, fully licensed contracting company specializing in Roofing and Energy Efficiency. Our company also works alongside the PACE program with homeowners to assist in the upgrades of your homes energy efficient projects. We have the experience and capability to solve any problems that plague homeowners, home builders, and building owners. Our company has assembled a highly-skilled team to provide quality services. Citywide does everything from prep to installation with new roofs on new construction, existing residential, and commercial properties. We are dedicated to the quality of our work from Roofing, HVAC, Solar, Insulation and more! Please feel free to look into our reviews on Google and Yelp!

"I contacted Citywide for a new roof quote. They promptly returned my call and set up an appointment. The next day I received a call to reschedule and we agreed on a new day. That day no one showed up and after a 90min wait I called. They said they thought the appointment was for the next day, so I agreed to meeting them the following morning. Again on the next morning no phone call and they were a no show. I would give them less than a 1 if it were possible. Beware of a company that treats you that way prior to having your money, who knows how they will treat you after they get your money."

Michael T on April 2023

Citywide Roofing is a full service, fully licensed contracting company specializing in Roofing and Energy Efficiency. Our company also works alongside the PACE program with homeowners to assist in the upgrades of your homes energy efficient projects. We have the experience and capability to solve any problems that plague homeowners, home builders, and building owners. Our company has assembled a highly-skilled team to provide quality services. Citywide does everything from prep to installation with new roofs on new construction, existing residential, and commercial properties. We are dedicated to the quality of our work from Roofing, HVAC, Solar, Insulation and more! Please feel free to look into our reviews on Google and Yelp!

"I contacted Citywide for a new roof quote. They promptly returned my call and set up an appointment. The next day I received a call to reschedule and we agreed on a new day. That day no one showed up and after a 90min wait I called. They said they thought the appointment was for the next day, so I agreed to meeting them the following morning. Again on the next morning no phone call and they were a no show. I would give them less than a 1 if it were possible. Beware of a company that treats you that way prior to having your money, who knows how they will treat you after they get your money."

Michael T on April 2023


Avatar for Duran HVAC inc

Duran HVAC inc

5.00(
8
)

Duran HVAC inc

5.00(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Duran HVAC, inc. is committed to providing quality work in heating, and cooling services to the South Bay, and surrounding area. From a small routine maintenance to a complete new install our service, and install technicians are ready to provide excellent service and address any needs of your indoor comfort.

"Tony and his team from Duran HVAC are the A team!! I give them an A++ on their work for us. Tony came out and has very helpful in thinking about the overall job, and we discussed options. His team led by Paul then came out and completed all the work described above in 4 days. Tony came by and checked on the work progress as well. This team is so skilled at what they do, they are a pleasure to work with, very careful with tarps and cleaning up each day, and the work has been completely superbly! They tested the system at the end of the last day and showed me how to program the two thermostats. They are the best! This is the beginning of an excellent long-term customer-service relationship. I will definitely be asking them to come back and handle the yearly maintenance checks of the systems. It is wonderful to find a team you know are highly competent, reliable, and great to work with! I highly recommend them to others! Do yourself a favor and call Tony at Duran HVAC now! You'll be very happy you did!"

Clare-Marie K on November 2020

Duran HVAC, inc. is committed to providing quality work in heating, and cooling services to the South Bay, and surrounding area. From a small routine maintenance to a complete new install our service, and install technicians are ready to provide excellent service and address any needs of your indoor comfort.

"Tony and his team from Duran HVAC are the A team!! I give them an A++ on their work for us. Tony came out and has very helpful in thinking about the overall job, and we discussed options. His team led by Paul then came out and completed all the work described above in 4 days. Tony came by and checked on the work progress as well. This team is so skilled at what they do, they are a pleasure to work with, very careful with tarps and cleaning up each day, and the work has been completely superbly! They tested the system at the end of the last day and showed me how to program the two thermostats. They are the best! This is the beginning of an excellent long-term customer-service relationship. I will definitely be asking them to come back and handle the yearly maintenance checks of the systems. It is wonderful to find a team you know are highly competent, reliable, and great to work with! I highly recommend them to others! Do yourself a favor and call Tony at Duran HVAC now! You'll be very happy you did!"

Clare-Marie K on November 2020

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Energy Efficiency Auditing questions, answered by experts

Smart home upgrades can be worth the money. Several upgrades, including smart thermostats and ceiling fans, can help reduce your energy bills. Others make life more convenient, freeing up your time to do what you love (or get more work done). And some smart home upgrades, such as entertainment systems, simply make life more enjoyable. All are worthy causes.

Audits include inspecting insulation, HVAC systems, windows, and appliances to identify energy inefficiencies.

Yes, with features like LED lighting and variable speed controls for efficiency.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

You can increase your home’s load factor by replacing fuse boxes with a circuit breaker, hiring a licensed electrician to upgrade your electrical panel, upgrading wiring, or installing subpanels. An electrical inspection by an expert can help determine the state of your current electrical systems and how they can be improved.

The Alviso, CA homeowners’ guide to energy efficiency auditing services

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