"},"url":"https://www.angi.com/companylist/us/ca/san-jose/a-1-heating-and-cooling-reviews-6395307.htm"},"position":3},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Speedy Plumbing","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Kay-lee L."},"reviewBody":"My water heater is good."},"url":"https://www.angi.com/companylist/us/ca/unknown/speedy-plumbing-reviews-8552093.htm"},"position":4},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Mighty Plumbing","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Charles C."},"reviewBody":"They arrived quickly after the first call, did the job, replaced the water heater and did the job with competitive prices. They removed the old heater and cleaned up after them selves"},"url":"https://www.angi.com/companylist/us/ca/daly-city/mighty-plumbing-reviews-1.htm"},"position":5},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"EMBARCADERO AUTOMOTIVE","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Evan P."},"reviewBody":"Had to bring the car back twice for them to redo the work they originally did. Car was leaking oil, never did before and car ran very rough. Also, they broke my air conditioning unit when they had t remove my dash and they wanted to charge me another $1000 for them to fix what they broke. Ended up getting it fixed for free but will never go there again. "},"url":"https://www.angi.com/companylist/us/ca/san-francisco/embarcadero-automotive-reviews-485824.htm"},"position":6},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Bayhill Heat & Air","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Nazy F."},"reviewBody":"The technician was very nice, he fixed the heater that was broken. I also needed to have another heater replaced and he was supposed to give us a call back after he found some pricing and never called us back."},"url":"https://www.angi.com/companylist/us/ca/san-mateo/bayhill-heat-and-air-reviews-2349778.htm"},"position":7},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"ANNUZZI HEATING & COOLING INC","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Kathy T."},"reviewBody":"I really like Annuzzi Heating and Cooling, and am going to contact them to order a new heater. Our current heater is more than 20 years old; it's a good heater (one of the early energy efficient heaters), and it has lasted longer than its expected life. Occasionally, over the years, the heater has stopped working. Several times, Annuzzi Heating and Cooling has been able to breathe new life into it. (Their competition, other companies, have given me the hard sell to buy a new heater [ex: a technician from The Competition (not Annuzzi's] never did identify the problem, and was reluctant to call the manufacturer for guidance in identifying the problem/ordering new parts.) The Annuzzi technician figured out what the problem was--a corroded battery in the thermostat, and when he replaced it, the heater worked! What would you rather pay for, a new battery, or a new heater? So yes, I'm a big fan of Annuzzi's, and when we order our new heater, you BET it will be from Annuzzi's! I recommend them high;y! "},"url":"https://www.angi.com/companylist/us/ca/south-san-francisco/annuzzi-heating-and-cooling-inc-reviews-210088.htm"},"position":8},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"SPEEDEE OIL CHANGE & TUNE-UP","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Susan R."},"reviewBody":"I go to them for oil change and I was there about 3 months ago."},"url":"https://www.angi.com/companylist/us/ca/san-bruno/speedee-oil-change-and-tune-up-reviews-3325487.htm"},"position":9},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Water Heaters Only, Inc","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Robert R."},"reviewBody":"I called in about a leaking hot water heater in the late afternoon and a representative - Alex - was at my condo within a couple hours. We assessed the situation and decided that a new water heater was needed and I chose a somewhat smaller 40 gallon size. From then on it was all Alex. He did a super job quickly removing the old heater and installing the new one. He also replaced some aging connecters and pipes at no charge. He was finished in less than two hours with no trash or debris left behind. Alex was totally professional, explained what he had done plus some instructions for the new heater. It was a great job and I fully recommend the company (and Alex). WO #1026809"},"url":"https://www.angi.com/companylist/us/ca/redwood-city/water-heaters-only%2C-inc-reviews-148562.htm"},"position":10}]}
Heating Oil Service reviews from real Angi homeowners in Foster City, CA
Last update on October 15, 2025
Randall D.
5.0
01/2018
First person who came said that he couldn’t do it on his own. Harris Water Heaters were sent out next. The work was done the following day. He was very professional, skilled and punctual. What more can you ask for?
Deanna B.
5.0
07/2017
Very prompt! Called them in the morning and they installed the new water heater by the afternoon. They took away the old broken water heater. The whole job took less than two hours.
The technician was very nice, he fixed the heater that was broken. I also needed to have another heater replaced and he was supposed to give us a call back after he found some pricing and never called us back.
Kathy T.
5.0
09/2013
I really like Annuzzi Heating and Cooling, and am going to contact them to order a new heater. Our current heater is more than 20 years old; it's a good heater (one of the early energy efficient heaters), and it has lasted longer than its expected life. Occasionally, over the years, the...
I called in about a leaking hot water heater in the late afternoon and a representative - Alex - was at my condo within a couple hours. We assessed the situation and decided that a new water heater was needed and I chose a somewhat smaller 40 gallon size. From then on it was all Alex. He...
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"
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's 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 consumer's 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."
Ignite HVAC 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.
Ignite HVAC 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.
We are a family owned full service heating and air conditioning company. We pride ourselves on delivering professional service to our clients. We are experts in all areas of heating and cooling installation and repair. There is no job to big or to small so please give us a call!
"We chose repair of a very old air conditioning unit due to the cost of a new unit. It is working now but we have no guarantee of for how long.
Global responded quickly and repaired the unit within hours."
Wayne B on July 2025
We are a family owned full service heating and air conditioning company. We pride ourselves on delivering professional service to our clients. We are experts in all areas of heating and cooling installation and repair. There is no job to big or to small so please give us a call!
"We chose repair of a very old air conditioning unit due to the cost of a new unit. It is working now but we have no guarantee of for how long.
Global responded quickly and repaired the unit within hours."
Welcome to ALANIS AIR, a family-owned and operated, top performing, highly rated HVAC company. We started 10 years ago in San Diego. Thanks to our unwavering dedication to quality and customer satisfaction, we're now serving the SF Bay Area and surrounding areas with one mission: to provide unparalleled comfort and care to every home we serve. We are offering the BEST deals in the industry in order to grow our business and demonstrate our excellence in service. At Alanis Air, we understand that your home is your sanctuary, and our goal is to ensure it remains a haven of comfort throughout every season. When you choose Alanis Air, you're not only selecting a service provider; you're inviting a trusted partner into your home. We take time to listen to your needs, so we can deliver solutions that fit your budget and lifestyle. If you're looking for TOP QUALITY work at a GREAT PRICE, Alanis Air will exceed your expectations! ALANIS AIR? Where Comfort Meets Care, Every Step of the Way.
"I highly recommend this company to do your heating and air conditioning project. John Alanis and his crew did an excellent job and the pricing he gave us beat the competition.
Thank you John and I’ll make sure to spread the word to my friends and relatives. "
Rod S on August 2025
Welcome to ALANIS AIR, a family-owned and operated, top performing, highly rated HVAC company. We started 10 years ago in San Diego. Thanks to our unwavering dedication to quality and customer satisfaction, we're now serving the SF Bay Area and surrounding areas with one mission: to provide unparalleled comfort and care to every home we serve. We are offering the BEST deals in the industry in order to grow our business and demonstrate our excellence in service. At Alanis Air, we understand that your home is your sanctuary, and our goal is to ensure it remains a haven of comfort throughout every season. When you choose Alanis Air, you're not only selecting a service provider; you're inviting a trusted partner into your home. We take time to listen to your needs, so we can deliver solutions that fit your budget and lifestyle. If you're looking for TOP QUALITY work at a GREAT PRICE, Alanis Air will exceed your expectations! ALANIS AIR? Where Comfort Meets Care, Every Step of the Way.
"I highly recommend this company to do your heating and air conditioning project. John Alanis and his crew did an excellent job and the pricing he gave us beat the competition.
Thank you John and I’ll make sure to spread the word to my friends and relatives. "
Need help repairing your appliance? We can help! Happy Again Appliance is working to make YOU HAPPY. We try to make your appliance fixing same day. With over 10 years of appliance repair and HVAC experience, we are here to help you with all your major appliance needs and HVAC needs EXCEPT DISHWASHERS. Ask us about our senior discount. You will love our customer service and patience with your project. We are passionate about quality work and you won't find better service with any other company. Message or text now to schedule your service! Thank you to be HAPPY AGAIN
"Vincent and his assistant Sergei took on a difficult job of installing a stove top and a downdraft fan that posed some challenges of fitting into an existing counter space. An installer sent by the dealer failed at this task but they were careful and creative in finding solutions. We appreciated the attention to detail and their hard work - and the result was fabulous. Not least, the price was reasonable and both of them were easy and pleasant to work with. No hesitation in recommending their services."
Daniel S on December 2024
Need help repairing your appliance? We can help! Happy Again Appliance is working to make YOU HAPPY. We try to make your appliance fixing same day. With over 10 years of appliance repair and HVAC experience, we are here to help you with all your major appliance needs and HVAC needs EXCEPT DISHWASHERS. Ask us about our senior discount. You will love our customer service and patience with your project. We are passionate about quality work and you won't find better service with any other company. Message or text now to schedule your service! Thank you to be HAPPY AGAIN
"Vincent and his assistant Sergei took on a difficult job of installing a stove top and a downdraft fan that posed some challenges of fitting into an existing counter space. An installer sent by the dealer failed at this task but they were careful and creative in finding solutions. We appreciated the attention to detail and their hard work - and the result was fabulous. Not least, the price was reasonable and both of them were easy and pleasant to work with. No hesitation in recommending their services."
Giant HVAC is the Bay Area's premier Heating and AC company. Owner operated by a family man, we stand tall to ensure you and your family stay comfortable. With more that 18 yrs of experience in the HVAC industry and as an HVAC energy inspector, we are really proud to provide quality services and installation. Our specialties include: -Free Estimates -Heating and AC Installation -Service and Repair -Duct Leakage Experts
"Very pleased"
Richard R on June 2024
Giant HVAC is the Bay Area's premier Heating and AC company. Owner operated by a family man, we stand tall to ensure you and your family stay comfortable. With more that 18 yrs of experience in the HVAC industry and as an HVAC energy inspector, we are really proud to provide quality services and installation. Our specialties include: -Free Estimates -Heating and AC Installation -Service and Repair -Duct Leakage Experts
After 17 years of providing quality, reliable and timely plumbing services as an employee and being disappointed by some of the dishonest and questionable tactics of my constituents, I have ventured out under my own license to provide superior plumbing services at honest, fair prices. Customers may choose to accept flat-rate bids for larger jobs or terms for an hourly estimate based upon their needs. Full payment is due upon completion of contracted work and we gladly accept cash, check or credit card.
After 17 years of providing quality, reliable and timely plumbing services as an employee and being disappointed by some of the dishonest and questionable tactics of my constituents, I have ventured out under my own license to provide superior plumbing services at honest, fair prices. Customers may choose to accept flat-rate bids for larger jobs or terms for an hourly estimate based upon their needs. Full payment is due upon completion of contracted work and we gladly accept cash, check or credit card.
Air conditioning service and heating installations is servicing the Sunnyvale, San Jose, Saratoga, Los Gatos, Cupertino, Los Altos, Milpitas and fremont, California since 1998, with residential and commercial hvac, furnace repair, furnace replacements, maintenace available by contract only, refrigeration service and repair, applaince repair and service, water heater replacement, heat pump service. Carrier, trane, bryant, rheem, lennox, american standard, york, amana, goodman, day and night air conditioning and heating. we service all brands and models, A and R FURNACE and heating is a reliable company that specializes in Residential and Commercial HEATING service/repairs installations and replacements, central air, furnace repair and service, wall heaters, Heat pumps, Air handlers, roof top heaters, ac and heating package units, wall heaters, floor heaters, boilers, radiant water heaters, water heaters, boilers, refrigeration, appliance repairs, compressors, evaporator coils, thermostats, electronic air cleaners, duct replacement and cleaning, refrigeration service, freezer repairs, walking coolers, Ice makers, washers and dryer service, thankless water heaters, We are providing FURNACE and heating services in Fremont, San Jose, Livermore, Pleasanton, Castro Valley, Danville, Saratoga, Palo Alto, Santa Clara, Sunnyvale, Saratoga, Los Gatos, Cupertino, Los altos, mountain view, Atherton, Menlo Park, Woodside, Portola valley, San Carlos, Union City, Newark, Hayward, San Leandro, San Lorenzo, Oakland, Alameda, Alamo, Danville, Lafayette, Orinda, Moraga, walnut creek, Tracy, California. ALL HEATING AND FURNACE MAKES AND MODELS Trane, Carrier, Bryant, Lennox, York, Payne, American Standard, Day and Night, Amana, Goodman, Coleman, Sears, general electric, Ruud, Maytag, Kenmore, Mitsubishi, turbo air,
Air conditioning service and heating installations is servicing the Sunnyvale, San Jose, Saratoga, Los Gatos, Cupertino, Los Altos, Milpitas and fremont, California since 1998, with residential and commercial hvac, furnace repair, furnace replacements, maintenace available by contract only, refrigeration service and repair, applaince repair and service, water heater replacement, heat pump service. Carrier, trane, bryant, rheem, lennox, american standard, york, amana, goodman, day and night air conditioning and heating. we service all brands and models, A and R FURNACE and heating is a reliable company that specializes in Residential and Commercial HEATING service/repairs installations and replacements, central air, furnace repair and service, wall heaters, Heat pumps, Air handlers, roof top heaters, ac and heating package units, wall heaters, floor heaters, boilers, radiant water heaters, water heaters, boilers, refrigeration, appliance repairs, compressors, evaporator coils, thermostats, electronic air cleaners, duct replacement and cleaning, refrigeration service, freezer repairs, walking coolers, Ice makers, washers and dryer service, thankless water heaters, We are providing FURNACE and heating services in Fremont, San Jose, Livermore, Pleasanton, Castro Valley, Danville, Saratoga, Palo Alto, Santa Clara, Sunnyvale, Saratoga, Los Gatos, Cupertino, Los altos, mountain view, Atherton, Menlo Park, Woodside, Portola valley, San Carlos, Union City, Newark, Hayward, San Leandro, San Lorenzo, Oakland, Alameda, Alamo, Danville, Lafayette, Orinda, Moraga, walnut creek, Tracy, California. ALL HEATING AND FURNACE MAKES AND MODELS Trane, Carrier, Bryant, Lennox, York, Payne, American Standard, Day and Night, Amana, Goodman, Coleman, Sears, general electric, Ruud, Maytag, Kenmore, Mitsubishi, turbo air,
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Heating Oil questions, answered by experts
HVAC systems usually last between 10 and 30 years, with most having a lifespan of around 20 years. Factors that impact a unit’s life expectancy include which brand you choose, how often you use it, and how well you maintain it. To make sure yours lasts as long as possible, make sure to keep it clean and schedule an annual service with an HVAC technician.
DIY maintenance like filter cleaning is possible, but professional servicing ensures proper pressure, refrigerant levels, and loop performance.
A geothermal heat pump system will take about 10 years to pay for itself, and it has a life span of anywhere from about 25 to 50 years. Installing a geothermal heat pump will cost about $14,250 upfront, but it can reduce your energy bills by around 65% when compared to a conventional HVAC system.
While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.
Yes, including optimizing settings and suggesting upgrades if needed.
By submitting this question, I acknowledge and agree that Angi may publicly display my name, city, state, and question on the website for professionals and others to see.
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