With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.
"5 star service!!! A crew of 3 arrived, Brandon H, Nestor C and Anthony A. They did an excellent job and very hard workers. I am thrilled with their professionalism, hot tips and work ethic. Will definitely recommend them!! Thank you again!!!"
Lisa V on May 2025
With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.
"5 star service!!! A crew of 3 arrived, Brandon H, Nestor C and Anthony A. They did an excellent job and very hard workers. I am thrilled with their professionalism, hot tips and work ethic. Will definitely recommend them!! Thank you again!!!"
Lisa V on May 2025
Eco Energy Bay Area | Pro attic is comprised of licensed professionals who are trained to safely and efficiently tackle rodent issues, insulation replacement and HVAC services in your attic, crawl space, and walls. Eco-friendly.
"He was nice and offered to fix one of my vents . Very professional."
Andy M on September 2022
Eco Energy Bay Area | Pro attic is comprised of licensed professionals who are trained to safely and efficiently tackle rodent issues, insulation replacement and HVAC services in your attic, crawl space, and walls. Eco-friendly.
"He was nice and offered to fix one of my vents . Very professional."
Andy M on September 2022
At Bell Brothers, our number priority to keep our customer, employees, and their families safe. As we continue to closely monitor the coronavirus situation, we want you to know that we have taken steps to ensure we are serving you in the safest way possible. As a precautionary measure, to ensure we are doing everything we can to ensure a safe and healthy work environment, we have implemented increased hygiene routines. This includes increased cleaning and sanitizing of all offices and high contact areas. All technicians will be taking precautionary measures such as: -Wearing gloves -Limiting contact such as handshaking -Hand washing and sanitizing before and after each customer visit -Wearing a mask on their face We will be doing everything we can to keep you and our technicians safe. Thank you for your trust in Bell Brothers. We remain committed to safely serving you.
"sometimes it takes time to complete the work"
Jayant S on August 2024
At Bell Brothers, our number priority to keep our customer, employees, and their families safe. As we continue to closely monitor the coronavirus situation, we want you to know that we have taken steps to ensure we are serving you in the safest way possible. As a precautionary measure, to ensure we are doing everything we can to ensure a safe and healthy work environment, we have implemented increased hygiene routines. This includes increased cleaning and sanitizing of all offices and high contact areas. All technicians will be taking precautionary measures such as: -Wearing gloves -Limiting contact such as handshaking -Hand washing and sanitizing before and after each customer visit -Wearing a mask on their face We will be doing everything we can to keep you and our technicians safe. Thank you for your trust in Bell Brothers. We remain committed to safely serving you.
"sometimes it takes time to complete the work"
Jayant S on August 2024
We are a local business here in the Bay Area We do everything from Replacing gas furnaces to instilling new all-electric furnaces A/C change out, mini-split installations, Heat pump systems, and heat pump water heaters. We are always trying to achieve our customer's satisfaction that's our goal!!
"From our first conversation to finishing my Heating project, Comfort Home Heating and Air was full on fabulous. Juan knows his trade very well and led me through my questions and decisions. Once we agreed on the project and date, Comfort Home showed up on time and seemed to use every moment effectively, by being Systematic and organized. They cleaned the area around the Heating and Air unit so it looked better than before. I can tell by looking at the installation that things were done thoughtfully and cleanly. I have worked with many contractors and have never come close to the satisfaction... even pleasure I had with Comfort. I cannot think of anything Comfort Home Heating and Air could have done better. I highly recommend them, if you want the best."
Leslie C on September 2024
We are a local business here in the Bay Area We do everything from Replacing gas furnaces to instilling new all-electric furnaces A/C change out, mini-split installations, Heat pump systems, and heat pump water heaters. We are always trying to achieve our customer's satisfaction that's our goal!!
"From our first conversation to finishing my Heating project, Comfort Home Heating and Air was full on fabulous. Juan knows his trade very well and led me through my questions and decisions. Once we agreed on the project and date, Comfort Home showed up on time and seemed to use every moment effectively, by being Systematic and organized. They cleaned the area around the Heating and Air unit so it looked better than before. I can tell by looking at the installation that things were done thoughtfully and cleanly. I have worked with many contractors and have never come close to the satisfaction... even pleasure I had with Comfort. I cannot think of anything Comfort Home Heating and Air could have done better. I highly recommend them, if you want the best."
Leslie C on September 2024
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
For over 35 years, for homeowners in Novato and northern California, the name Peter Levi has come to means just that — Trust. Reliable, experienced & certified premiere HVAC, all of Peter Levi technicians are some of the friendliest, most knowlegeable people you’ll ever meet! Drug screened and background checked, you can always count on a top-notch experience. We charge by the job, so you know the cost before we start. As one of the most trusted Novato and Vacaville commercial Plumbing and HVAC companies, we have worked with builders and homeowners alike for over 20 years, providing the highest quality, professional services with 100% customer satisfaction each and every time. Plus, you can always count on honest, upfront pricing with no hidden charges or fees and the confidence of knowing that a true professional is on the job! PLUMBING HEATING AIR CONDITIONING SEWER and DRAIN SERVICE and REPAIR COMMERCIAL AND SO MUCH MORE!
"It went very well; the thorough HVAC system checkup revealed some questionable component that were best suggested to be replace with new ones. I am not confident that my HVAC system is set for more that good performance going forward. I appreciated the non-pressured advice and suggestions in coming to my decisions. Thank you, Joaquin Ortiz."
Carlos G on May 2024
For over 35 years, for homeowners in Novato and northern California, the name Peter Levi has come to means just that — Trust. Reliable, experienced & certified premiere HVAC, all of Peter Levi technicians are some of the friendliest, most knowlegeable people you’ll ever meet! Drug screened and background checked, you can always count on a top-notch experience. We charge by the job, so you know the cost before we start. As one of the most trusted Novato and Vacaville commercial Plumbing and HVAC companies, we have worked with builders and homeowners alike for over 20 years, providing the highest quality, professional services with 100% customer satisfaction each and every time. Plus, you can always count on honest, upfront pricing with no hidden charges or fees and the confidence of knowing that a true professional is on the job! PLUMBING HEATING AIR CONDITIONING SEWER and DRAIN SERVICE and REPAIR COMMERCIAL AND SO MUCH MORE!
"It went very well; the thorough HVAC system checkup revealed some questionable component that were best suggested to be replace with new ones. I am not confident that my HVAC system is set for more that good performance going forward. I appreciated the non-pressured advice and suggestions in coming to my decisions. Thank you, Joaquin Ortiz."
Carlos G on May 2024
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!
"It was fine but to expensive sorry Ivan’s affort that much"
Rene T on May 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!
"It was fine but to expensive sorry Ivan’s affort that much"
Rene T on May 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.
"Service was good and timely."
Gerald W on April 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.
"Service was good and timely."
Gerald W on April 2025
With over 17 years of experience in the Bay Area, we are proud to offer an extensive array of HVAC solutions for all you indoor comfort needs. Our team of professionally trained and certified advisors and installers provide quality workmanship and excellent customer service. We are determined to go the extra mile to ensure that all of our customers are happy homeowners! We work closely with each individual client to fully understand their unique needs, preferences and budget. Our commitment to customer satisfaction means we won't rest until you are 100% satisfied. Specializing in heating and air conditioning replacement and repairs, furnace and heat pump upgrades and ductless systems. We also provide in depth assessments for air duct repair and replacements. Our Innovative approach to newer HVAC technology for home additions, ADU's and eco-concious homes is unparalled in the local industry.
"Tech said that the Freon leaked out and that the compressor burned out because of it. Quoted $4800 to replace compressor and recharge, or $7,000 for a new AC unit. Got a second opinion and hired a handyman. Turns out the breaker was tripped and needed some fiddling with. AC works great now. Can’t believe they were going to lie about what was wrong to replace the whole AC. Just because it was an old unit. Get a second opinion for them if they tell you something similar."
John N on July 2018
With over 17 years of experience in the Bay Area, we are proud to offer an extensive array of HVAC solutions for all you indoor comfort needs. Our team of professionally trained and certified advisors and installers provide quality workmanship and excellent customer service. We are determined to go the extra mile to ensure that all of our customers are happy homeowners! We work closely with each individual client to fully understand their unique needs, preferences and budget. Our commitment to customer satisfaction means we won't rest until you are 100% satisfied. Specializing in heating and air conditioning replacement and repairs, furnace and heat pump upgrades and ductless systems. We also provide in depth assessments for air duct repair and replacements. Our Innovative approach to newer HVAC technology for home additions, ADU's and eco-concious homes is unparalled in the local industry.
"Tech said that the Freon leaked out and that the compressor burned out because of it. Quoted $4800 to replace compressor and recharge, or $7,000 for a new AC unit. Got a second opinion and hired a handyman. Turns out the breaker was tripped and needed some fiddling with. AC works great now. Can’t believe they were going to lie about what was wrong to replace the whole AC. Just because it was an old unit. Get a second opinion for them if they tell you something similar."
John N on July 2018
Contact Big Air at (925) 687-7942 for installation of energy-efficient heating and air conditioning equipment. We install most brands including Trane, Rheem and Fujitsu. Call us today for your free in-home estimate.
"In the same day as my initial call , they sent a technician. She was very informative, professional, and very empathetic to my budget and needs. The estimate was free and the quotes were reasonable. The next day, my ducting was replaced. Thank you One hour. I will definitely recommend to all my friends and family."
Kandyce F on January 2018
Contact Big Air at (925) 687-7942 for installation of energy-efficient heating and air conditioning equipment. We install most brands including Trane, Rheem and Fujitsu. Call us today for your free in-home estimate.
"In the same day as my initial call , they sent a technician. She was very informative, professional, and very empathetic to my budget and needs. The estimate was free and the quotes were reasonable. The next day, my ducting was replaced. Thank you One hour. I will definitely recommend to all my friends and family."
Kandyce F on January 2018
The duration depends on your home's size and the testing method employed. A professional evaluation takes between one and three hours to complete properly. Larger homes with complex ductwork naturally require more time than smaller properties with straightforward systems. The technician needs sufficient time to assess all duct runs and connections to provide accurate results.
Addressing duct leakage can lead to meaningful energy savings, though the exact amount depends on the severity of the leaks and your overall system efficiency. Properly sealed ductwork ensures that conditioned air reaches its intended destinations rather than escaping into unused spaces. The investment in repairs provides returns through reduced utility costs.
Seek technicians with relevant industry certifications from recognized organizations. Professionals with NATE, BPI, or RESNET credentials have demonstrated knowledge of proper testing procedures and system diagnostics. Always verify that the company carries appropriate licensing and insurance coverage. Experienced technicians will explain their testing methodology clearly and provide detailed documentation of their findings and recommendations.