Get matched with top heating oil pros in Castro Valley, CA
There are 3 highly-rated local heating oil pros.
TRUSTED BY HOMEOWNERS
4.5 
191 Heating oil pros in Castro Valley
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
Call for a free estimate! HVAC & Insulation Gurus have an extensive background in HVAC and insulation services. With fifteen years of experience on the field, the Gurus have earned a reputation as trusted installers. Our mission is to provide both our residential and commercial customers with reliability, expert advice, quality work integrity and an outstanding service. We dedicate ourselves 110% to our customers not only to achieve energy efficiency, comfort, and safety, but also to establish a friendship. Everybody needs a Guru in the family. Let us be yours!
"Great! Super knowledgeable and helpful."
Catherine M on March 2025
Call for a free estimate! HVAC & Insulation Gurus have an extensive background in HVAC and insulation services. With fifteen years of experience on the field, the Gurus have earned a reputation as trusted installers. Our mission is to provide both our residential and commercial customers with reliability, expert advice, quality work integrity and an outstanding service. We dedicate ourselves 110% to our customers not only to achieve energy efficiency, comfort, and safety, but also to establish a friendship. Everybody needs a Guru in the family. Let us be yours!
"Great! Super knowledgeable and helpful."
Catherine M on March 2025
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
"Very pleased"
Richard R on June 2024
We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!
"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"
Millicent M on January 2021
We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!
"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"
Millicent M on January 2021
Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!
"HK&S/Harry did a great job replacing our 75 gallon water heater, expansion tank and recirculating pump. Came on promised day and got the job done efficiently and at agreed upon price. Would recommend. "
Glenn G on May 2025
Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!
"HK&S/Harry did a great job replacing our 75 gallon water heater, expansion tank and recirculating pump. Came on promised day and got the job done efficiently and at agreed upon price. Would recommend. "
Glenn G on May 2025
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.
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
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025
Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!
"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"
Diane M on January 2021
Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!
"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"
Diane M on January 2021
MCCORMICK HOME BUILDERS INC Were a locally owned and operated company that values honesty and integrity and treats your home or business as if it were our own. We are experts in all aspects of roofing projects and our services are customizable to each individual project. We specialize in both installations and replacements. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"We recently remodeled our bathroom with McCormick, and it was a fantastic experience. Khaled was informative, patient, and genuinely helpful, guiding us through choices for a perfect design. The team’s professionalism showed in their punctuality and quality. Every aspect was done with care, from tile placement to lighting. The transformation is truly impressive; the bathroom now feels open and luxurious. We’re beyond pleased with the result and look forward to more projects with them."
Geoffrey C H on January 2025
MCCORMICK HOME BUILDERS INC Were a locally owned and operated company that values honesty and integrity and treats your home or business as if it were our own. We are experts in all aspects of roofing projects and our services are customizable to each individual project. We specialize in both installations and replacements. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"We recently remodeled our bathroom with McCormick, and it was a fantastic experience. Khaled was informative, patient, and genuinely helpful, guiding us through choices for a perfect design. The team’s professionalism showed in their punctuality and quality. Every aspect was done with care, from tile placement to lighting. The transformation is truly impressive; the bathroom now feels open and luxurious. We’re beyond pleased with the result and look forward to more projects with them."
Geoffrey C H on January 2025
Heating oil services FAQs
To buy heating oil for your house, contact local heating oil companies to compare prices and place an order once you decide on a supplier. The company will have to deliver your heating oil in a truck designed to carry and dispense heating oil safely. Call and order your heating oil early enough to have your oil delivered before you need to start using it for home heating.
On average, you’ll need about two gallons of oil per day to heat your house when it’s 50 degrees Fahrenheit outside. Most oil tank capacity is about 275 gallons, and heating your house with two gallons of oil per day will last about four and a half months. This consumption will vary depending on the climate and average temperature in your location. For example, if the winters are longer and colder where you live, you’ll probably need to refill your oil tank at least once to get through the winter.
You save money on heating oil in a few ways:
Make sure your home is well insulated and sealed against drafts and heat leakage.
Use a thermostat that’s working properly and calibrated accurately.
Increase energy efficiency by insulating your basement and attic.
Turn down your thermostat a few degrees.
Program your thermostat to lower the heat when you’re not home.
Order heating oil during the off-season when prices are likely to be lower.
Summer months tend to be when heating oil prices are lowest because of decreased demand. Buying heating oil during the off-season also prepares you for when the weather gets cold, and you need to start using the oil to heat your home. Although heating oil prices will fluctuate, it’s best to avoid purchasing between September and April, as that's the peak season for heating oil demand.
Overall, heating your home with an oil furnace tends to be less expensive than heating your home with an electric heating system. Oil heating systems stay warm for longer periods of time without drawing a constant electrical current to maintain a temperature. Plus, heating oil systems typically have a longer lifespan and lower price tag than their electrical counterparts, resulting in short- and long-term savings.
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