Thank you for choosing 411 Heating & AC, LLC, Contra Costa Countys premiere HVAC service professional. For nearly a decade, we've specialized in all your heating and air conditioning needs. We proudly serve Concord and the surrounding areas. We look forward to earning your business.
"Our heater broke and my husband is medically fragile and It was 58 degrees INSIDE. I needed help ASAP. He's 88 and I'm 77 and calling people was frustrating until I checked top Angie reviews for my area. Even then, two out of three failed on ability to respond in less than 7-10 days. Another said we can come assess in three days and then schedule your repairs. 411 came within hours and had us heating up with a brand new, quieter, and quicker system the next day! Can't thank them enough. And the pricing was very fair based on checking with others in our neighborhood and relatives who have had to replace their systems."
Linda M on February 2025
Thank you for choosing 411 Heating & AC, LLC, Contra Costa Countys premiere HVAC service professional. For nearly a decade, we've specialized in all your heating and air conditioning needs. We proudly serve Concord and the surrounding areas. We look forward to earning your business.
"Our heater broke and my husband is medically fragile and It was 58 degrees INSIDE. I needed help ASAP. He's 88 and I'm 77 and calling people was frustrating until I checked top Angie reviews for my area. Even then, two out of three failed on ability to respond in less than 7-10 days. Another said we can come assess in three days and then schedule your repairs. 411 came within hours and had us heating up with a brand new, quieter, and quicker system the next day! Can't thank them enough. And the pricing was very fair based on checking with others in our neighborhood and relatives who have had to replace their systems."
Linda M on February 2025
At Ferreira's Heating And Air Conditioning, we pride ourselves on providing quality service that customers can believe in. We will always see the project through to the customer's satisfaction. Call us for a free estimate and to get a Air Conditioning and Heating professional out to your home today!
"great work at a much needed time"
Paul B on February 2021
At Ferreira's Heating And Air Conditioning, we pride ourselves on providing quality service that customers can believe in. We will always see the project through to the customer's satisfaction. Call us for a free estimate and to get a Air Conditioning and Heating professional out to your home today!
"great work at a much needed time"
Paul B on February 2021
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.
"Great customer service!"
John _ on March 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.
"Great customer service!"
John _ on March 2025
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.
"Kolby was very professional, timely, extremely helpful, ! If you need help with HVAC issues, he's the one to call! He's fantastic!"
Debra C on January 2025
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.
"Kolby was very professional, timely, extremely helpful, ! If you need help with HVAC issues, he's the one to call! He's fantastic!"
Debra C on January 2025
Remodeling business locally owned and operated we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Jonathan is meticulous and methodical, not to mention kind. The work was excellent and professional. I would hire again."
Brian M on April 2025
Remodeling business locally owned and operated we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Jonathan is meticulous and methodical, not to mention kind. The work was excellent and professional. I would hire again."
Brian M 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
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!
"He was not able to perform the service. He told me he did not have the correct parts. That I needed PGE to come back out. I had another professional come the following day and he was able to diagnose and fix both wall heaters with no issue. I was very diappointed and felt cheated."
Tracy D on April 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!
"He was not able to perform the service. He told me he did not have the correct parts. That I needed PGE to come back out. I had another professional come the following day and he was able to diagnose and fix both wall heaters with no issue. I was very diappointed and felt cheated."
Tracy D on April 2025
We have a 10 year experience in Handyman work, serving all around the bay area. We will always put in all our effort to give our costumers 100% satisfaction. We like to build good relationships with our customers. We do free estimates with no obligation to proceed.
"Didn’t get to finish due to a part cracked"
Ethan M on November 2024
We have a 10 year experience in Handyman work, serving all around the bay area. We will always put in all our effort to give our costumers 100% satisfaction. We like to build good relationships with our customers. We do free estimates with no obligation to proceed.
"Didn’t get to finish due to a part cracked"
Ethan M on November 2024
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
Family owned business with over 20 years of experience handling Construction and handyman services.
"Marcellus was collaborative, knowledgeable, Provided quality job and provided to work on time"
art H on December 2024
Family owned business with over 20 years of experience handling Construction and handyman services.
"Marcellus was collaborative, knowledgeable, Provided quality job and provided to work on time"
art H on December 2024
Most ductwork lasts between 15 and 25 years. Sheet metal ducts can last even longer—up to 30 to 50 years. The lifespan of your ductwork depends on factors like the quality of the materials, how well it's maintained, and the environment it's in. As ducts get older, you might notice deterioration and decreased performance. Regular inspections and proper maintenance can help your ducts last longer and keep your HVAC system running efficiently.
If you're looking for options that don't require ductwork, consider ductless mini-split systems. These systems are becoming increasingly popular because they require minimal installation. With multiple indoor air handlers and at least one outdoor compressor unit, mini-splits use heat pump technology to heat or cool your home through refrigerant lines. While mini-splits cost more upfront than traditional systems, they offer superior efficiency, zoning flexibility, and other advantages that can save you money in the long run.
Undersized ductwork restricts airflow, leading to uneven temperature distribution, strain on HVAC equipment, and other problems. Oversized ductwork similarly hurts HVAC efficiency and causes poor temperature distribution or consistency. In either case, improper ductwork sizing results in increased maintenance needs, more frequent repairs, higher operating costs, and a reduced lifespan for HVAC equipment.
You can replace only a portion of your ductwork when certain sections show issues while other areas remain sound. Targeted replacement is a cost-effective solution that focuses on problematic duct sections only. By addressing only the damaged segments, homeowners lower material and labor costs while still enhancing airflow. Partial replacements maintain system balance, protect well-functioning ducts, and minimize disruption during renovations.
Duct cleaning is a viable option to maintain your duct system when significant damage, leaks, or mold are not present. Routine cleaning improves airflow and indoor air quality. Removing accumulated dust, allergens, and debris restores efficiency and reduces energy loss. Homeowners observe improved HVAC performance and healthier living spaces without the need for complete duct replacement if the ducts are structurally sound.