Ariston Heating and Cooling Incorporation, 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.
"Personnel were friendly, explained clearly how the system would work. Showed up on time and completed the work as promised."
Dh M on July 2023
Ariston Heating and Cooling Incorporation, 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.
"Personnel were friendly, explained clearly how the system would work. Showed up on time and completed the work as promised."
Dh M on July 2023
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.
"Junior was totally on top of things. Installers were on time, polite and very efficient. I was given 5 quotes from other companies but General Air Technology was BY FAR the lowest quote."
nadine D on January 2022
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.
"Junior was totally on top of things. Installers were on time, polite and very efficient. I was given 5 quotes from other companies but General Air Technology was BY FAR the lowest quote."
nadine D on January 2022
Eagle Air has been in business since 1993 and is a recognized authority in HVAC design, installation, repair, maintenance, and replacement of residential and commercial heating and air conditioning systems. Eagle Air offers equipment and certified professional service.
"Good"
Ani B on August 2024
Eagle Air has been in business since 1993 and is a recognized authority in HVAC design, installation, repair, maintenance, and replacement of residential and commercial heating and air conditioning systems. Eagle Air offers equipment and certified professional service.
"Good"
Ani B on August 2024
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
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 dedicated to providing our clients with the very best in service, installation and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long term relationships with our clients and guarantee your satisfaction.
"They did a good job."
Oskar W on June 2021
We are dedicated to providing our clients with the very best in service, installation and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long term relationships with our clients and guarantee your satisfaction.
"They did a good job."
Oskar W on June 2021
Electric Air is a heat pump installer that offers quick estimates and transparent pricing.
Electric Air is a heat pump installer that offers quick estimates and transparent pricing.
Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.
"Peter, and his crew, were very reliable and professional. I purchased a new RUUD furnace and A/c. Their price was better than the other 3 bids I got. Everything was inspected by Archon. The final permit/inspection was issued. The system has been up and running for 6+ months now. No problems."
Kathy C on September 2021
Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.
"Peter, and his crew, were very reliable and professional. I purchased a new RUUD furnace and A/c. Their price was better than the other 3 bids I got. Everything was inspected by Archon. The final permit/inspection was issued. The system has been up and running for 6+ months now. No problems."
Kathy C on September 2021
AireServ of Pleasanton is a locally/owner run and operated company. We service all of East Bay Area. 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. AireServ has been around for over 20-years with over 250 locations.
AireServ of Pleasanton is a locally/owner run and operated company. We service all of East Bay Area. 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. AireServ has been around for over 20-years with over 250 locations.
Albert Nahman Plumbing, Heating, and Cooling is a full service plumbing company dedicated to delivering exceptional service and warranties to the homeowner, apartment manager or building professional. We employ advanced diagnostic tools to solve your plumbing problems quickly and accurately. Our range of services include expert repairs to existing plumbing water, gas and sewage systems, copper piping, water main replacements, trenchless sewer replacements and tank or tankless water heater installations. We have been an early supporter of energy saving products such as tankless water heaters and are locally known as the tankless water heater specialist having installed and serviced all models of tankless water heaters for more than twenty years. We also have expertise in renovating existing kitchens, baths or laundries to help make your design dreams a reality or to simply upgrade your fixtures with high efficiency products.
"Not the first time I've gone with Albert Nahman and won't be the last. Working with this team is always very smooth and easy. This time worked with expert plumber Cole, and he was very easy to work with, helped me understand the issue clearly, gave me some tips for how I can help out with my own skills, and made sure I was getting the best deal."
Josh W on April 2025
Albert Nahman Plumbing, Heating, and Cooling is a full service plumbing company dedicated to delivering exceptional service and warranties to the homeowner, apartment manager or building professional. We employ advanced diagnostic tools to solve your plumbing problems quickly and accurately. Our range of services include expert repairs to existing plumbing water, gas and sewage systems, copper piping, water main replacements, trenchless sewer replacements and tank or tankless water heater installations. We have been an early supporter of energy saving products such as tankless water heaters and are locally known as the tankless water heater specialist having installed and serviced all models of tankless water heaters for more than twenty years. We also have expertise in renovating existing kitchens, baths or laundries to help make your design dreams a reality or to simply upgrade your fixtures with high efficiency products.
"Not the first time I've gone with Albert Nahman and won't be the last. Working with this team is always very smooth and easy. This time worked with expert plumber Cole, and he was very easy to work with, helped me understand the issue clearly, gave me some tips for how I can help out with my own skills, and made sure I was getting the best deal."
Josh W on April 2025
Heat pumps rely on evaporation and condensation processes. The unit transfers heat through the system via a compressed refrigerant. The compressor within the pump circulates the refrigerant through two coils. The first coil evaporates the refrigerant and absorbs warmth from the air. The refrigerant then passes to the second coil, where it condenses, and the unit releases the absorbed heat.
A well-installed and well-maintained heat pump lasts an average of 12 to 20 years. Routine filter changes, annual tune‑ups, and prompt repairs help the equipment reach the upper end of that range, while skipped maintenance or poor installation can shorten its life and raise long‑term costs. Ask your heat pump installation pro for maintenance recommendations so you can get the maximum benefit from your unit.
Heat pumps are most effective in regions where winter lows remain above approximately 40°F. Efficiency starts to drop below that point and falls off sharply near 25°F. If you live in a colder area, look for a model with a high Heating Seasonal Performance Factor (HSPF) and plan on supplemental heat during deep freezes to keep energy use in check.
The biggest drawbacks are the upfront cost and poor cold-weather performance. Installation can require electrical upgrades or duct changes, and once temperatures fall well below freezing, the unit may need help from a furnace or electric resistance coils. Factor in those add‑ons, along with routine maintenance, when you weigh the long‑term savings against the initial investment.