Top Heating & Furnace Contractors in Castro Valley, CA
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Featured Service Pros
In business since 2020
Areas Of Expertise: HVAC, General Contracting
About us: "With years of experience in the construction industry, we are the experts you need to take care of your home or business. We handle all of your general contracting and HVAC needs with great care. We will treat your home as we would treat our own. Give IY Development & Renovation, Inc. a call today, we look forward to working with you!"
Areas Of Expertise: Bathroom Remodel, HVAC
"Thus company really cares about their customers and doing good work at fair prices. Adam goes the extra mile to make sure things are going well."
Chris R. in July 2017

Areas Of Expertise: Professional installation by experienced local contractors. A dedicated project coordinator will guide you every step of your project., Robust financing options and product selections to meet every budget, Manufacturer limited product warranty of up to 10 years (ask representative about written warranty details) , and 2 more
"Very professional And Timely courteous with both installation and removal of old boiler I would recommend them to anyone."
Otis C. in January 2023
Service Pros

Areas Of Expertise: Insulation
"We had the batts insulation installed in 2021. As well as the eco friendly radiant barrier which was suggested after researching we went with it. Wonderful recommendation from Attic Pros. Helps keep our home cooler in hot w weather as well as warmer in cold. The service comes with a warranty for Rat proofing. Recently we heard some potential rat noises from the attic. I called Attic Pros and was set up with an appointment for a technician to come and re check the work an seal off any potential areas of entry. They must have sent their best technician not only was he completely thorough as far as inspecting previous work and repairing anything that needed. He was very informative and courteous. We feel fortunate to have had Said sent to our home to do the work. As of now I couldnâ t me more pleased. If ever we need a service from attic pros. We will definitely request Said"
Dave O. in December 2022
Areas Of Expertise: Additions and Remodels
"It was great working with Dream to Reality Remodeling Overall the experience was amazing. From start to finish it went smoothly. The final outcome was impressive. They Remodeled our kitchen and the before and after difference was out of this world."
Gannie M. in May 2021

Areas Of Expertise: Furnace Repair, Repair A/C Unit, Replace A/C Unit , and 2 more
"After being told by other companies that I needed to replace my 80-year-old gravity furnace (to the tune of $20, 000 I did not have), I finally called Empire. I know that old machines are simple with few parts and no electronics, so I quickly learned that few people know how to REPAIR not just install. They do both. Pavel has studied heating repair for over 2 years in addition to his practical experience. He came to SF within 24 hours and even returned without grumbling when I got stuck in a dog emergency. He was polite, efficient, was able to diagnose and already had all the parts to do the fix immediately. Heat pronto! He put everything back in place and charged a fair price. When I am ready to replace my furnace and water heater, based on attitude and workmanship, I will definitely use them. I had done homework on new furnaces, and the Bryant brand heater (same owner as Carrier) they install are among the highest rated; well beyond the Lennox partnered with Costco. As a senior, a woman of color and homeowner, I have been burned many times. If I realized Empire was around I could have been securely toasty months ago. Thank you, Pavel."
a H. in January 2019

Areas Of Expertise: Heating Cooling Filtration Indoor Air Quality, HVAC, Heating Cooling Filtration Indoor Air Quality , and 4 more
"To start, I put in for an emergency call to Freschi and was told they would call me 30 minutes before. They never called me back. Freschi sucks!!!I I also put in a request on HomeAdvisor on Thursday night and was given Global Warming Heating and Air as one of their verified contractors. I got a call at 7am from Rudy. I called back around 830am and we made an appointment for 1130am. He showed up at 1105am and quickly diagnosed the problem. He recommended replacing the furnace(which houses the blower assembly) due to the cost of repairs and its 17 year old condition. He didn t try to up sell me for an entire new system. He said my AC is working well so there s no need to replace it. I decided to replace the furnace and he said he d be back around 130pm. Rudy and his crew were back by 1pm. From the start of demo to it running again was less than 2 hours. Rudy s customer service is top notch!! From now on, I will only be calling Global Warming Heating and Air. I can t say enough good things about Rudy s business ethics and timeliness. A+++++"
Dave R. in July 2020

Areas Of Expertise: AC Repair, Furnace Repair, HVAC
"Very good communication, fast service. We have an old floor furnace that needed a part replacement with an update to current standards The estimator spent a good half hour identifying the problem and the solution, and explained it to us clearly. That cost was deducted when we had them fix the heater, which they did quickly and successfully. Very happy with the service, if we replace the furnace we will turn to them first."
Avi R. in January 2021

Areas Of Expertise: Air Conditioning - Repair, Replace or Installation, Heat Pump - Repair, Replace or Installation, Zone Systems , and 2 more
"I needed my old wall heater removed and they installed ducts and vents and the whole system. I was worried about any potential mess but that was unwarranted. They were so clean and neat, professional, courteous and easy to work with. They explained everything they were doing and showed my how to program my new thermostat. I'm very happy with Raul and his crew and highly recommend them."
Anna T. in April 2015
Areas Of Expertise: HVAC, Bath Remodels, Doors and Windows , and 2 more
"Great experience with very professionals. From our very first meeting I felt confident that the job would be done efficiently. Very pleased and would highly recommend."
Yvonne S. in July 2021
Areas Of Expertise: Energy Assessments, Home Energy Upgrades, Heating and Cooling , and 1 more
"The service was wonderful! Scheduling was very easy and accurate and the technician was timely, knowledgeable, honest and direct. I would highly recommend this business."
Joan A. in September 2019

Areas Of Expertise: San Rafael, HVAC, Novato
"Furnace replacement was excellently installed, and thus far has worked to perfection. I would highly recommend Red Mountain Heating and Air."
Terry S. in March 2022

Areas Of Expertise: Furnace Repairs, Air Condtioner Repairs, Heat Pumps
"Thank you Eric for getting me in your schedule so quickly, being on time and getting my heater working! You did a great job fixing my wall heater at a reasonable price and I now don’t have to shiver the rest of the winter. Most others I have had come over have tried to convince me into getting central heating as my only option, but you were able to make my wall heater work again (and quickly). The best part of this experience was how professional, courteous & knowledgeable you were. I will definitely work with you guys again!"
India S. in December 2018
In business since 2018
Areas Of Expertise: Repairs, Commercial HVAC Service
About us: "At Polairis Mechanical, Inc, we pride our company on reliability, communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We look forward to earning your business!"

Areas Of Expertise: Air Ducts & Vents - Clean, Central A/C - Install/ Service/Repair, Ducts & Vents - Install or Replace , and 1 more
"They did a good job on checking my furnace and changing my air filters. The only issue was that they arrived three hours later than they had stated on the phone."
Jeremiah W. in December 2021
In business since 1992
Areas Of Expertise: Central Heating, All of your heating & cooling needs, Central A/C
About us: "Sears Home Services has helped consumers transform their homes for over 100 years. Trust our experts to replace, repair or maintain your heating and cooling systems. Right now, you can save $325 on a new HVAC purchase of $1,500 or more. Restrictions apply. And, if you need HVAC repair or maintenance, ask about our HVAC Savings Program. Every paid HVAC repair and maintenance service with Sears Home Services earns you dollar for dollar savings towards your next HVAC replacement, up to 10% of your new unit purchase price."

Areas Of Expertise: Plumbing
"I highly recommend this company!!! He responded within minutes of my searching for a plumber. He came the next day and installed a new tankless water heater. He also found a faulty electrical outlet and repaired it as well. Quality workmanship. I will keep his number. His name was Harry."
valerie A. in December 2022

Areas Of Expertise: Heating & Cooling, HVAC, Insulation
"I would recommend them."
Shiri S. in October 2017
In business since 1983
About us: "ALLIED HEATING & AIR CONDITIONING CO INC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 35 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!"

Areas Of Expertise: Air Conditioning, Ductwork and Insulation Installation, Heating , and 2 more
"We had a new A/C put in on 7-19-19 and we had a bumpy start. The person who installed it didn’t notice wires were not plugged in up in the attic by the furnace. The house didn’t cool down for days. I called them back and Service champions made it right the very next day. Travis was courteous and friendly assessing our needs for our house, giving us a clear estimate, and Ben was thorough and friendly and reassuring when he fixed our problem for free when I called them back. I would also like to note that service champions has a live person on the phone 24/7. Perfect for emergencies. Give them a shot!"
Courtney M. in July 2019

Areas Of Expertise: Gas Piping Replacements and Repairs, Water Heater Replacements and Repairs, Faucets / Fixtures / Pipes - Replacements and Repairs , and 2 more
"I called Big Blue to repair my water heater which wouldn't relight, and was very impressed with the professionalism of Technician Nathan Jones. More than on time, Nate arrived and contacted me a half hour early. Fully prepared to replace my flooded out burner, Nate attempted to relight my pilot one more time, and it worked. He didnt try to upsell me and convince me to replace the burner anyway. Instead he gave me an estimate to replace the burner, made some recommendations for other areas of improvement, such as a sump pump to avoid potential flooding again, and gave me an estimate for that. Best of all, he didn't charge me for the simple fix, and instead used the service call as a complimentary job estimate and quotation. Awesome! Thanks Nate, for the excellent service! I will definitely call upon Big Blue again for any future plumbing needs, and I would highly recommend Nate to anyone for service."
Mark P. in January 2023
Out of Network Heating & Furnace Contractors in Castro Valley, CA
- STS Electric Company
1452 Greenlawn Drive
Danville, CA 94526
- Bay Boiler
94 Wool St.
San Francisco, CA 94110
- First Choice Heating & Air Conditioning
1675 Poplar Ct
Los Banos, CA 93635
- Nowak's Heating & Air Conditioning, Inc.
18744 Lamson Rd.
Castro Valley, CA 94546
- Bene' Electric
Pleasanton, CA 94566
PO Box 774 /
Pleasanton, CA 94566
- B & B Plumbing & Installation
3629 San Leandro St
Oakland, CA 94601
- Bay Area Plumbing & Htg.
30 Stein Am Rhein Ct
Redwood City, CA 94063
- Taylor Electric
4653 Stauffer pl
Oakland, CA 94619
- N V Heathorn Inc
1155 Beecher St
San Leandro, CA 94577
- Black Diamond Mechanical
3754 Sailboat Dr
Discovery Bay, CA 94505
Frequently Asked Questions
What is a furnace?
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What is a furnace?
A furnace generates and distributes heated air throughout your home. A vital part of the heating, ventilation, and air conditioning (HVAC) system—though it does not cool air—you activate a furnace when you set or adjust the temperature in a room using the thermostat. Furnaces can run off natural gas, oil, electric, or propane.
How long does a furnace last?
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How long does a furnace last?
The average gas furnace lasts 15 to 20 years, though some electric furnaces can last 30 years or more.
- Gas furnace: 15–20 years
- Electric furnace: 20–30 years
- Oil furnace: 15–20 years
In addition to furnace type, your unit’s lifespan also depends on its size and the heating system you have—two-stage furnaces are more efficient and less likely to break than single-stage furnaces.
Having a reputable HVAC technician perform annual furnace maintenance and inspections can help ensure you get the most out of your unit. And, as always, change your filters regularly—a dirty filter can block airflow and overwork the motor.
How often should you change your furnace filter?
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How often should you change your furnace filter?
You should change your furnace filter every one to three months to help maintain air quality, keep energy costs in check, and extend your unit’s lifespan. If people in your home have dust or pet dander allergies, you may consider changing your filters more regularly. Looking for an even simpler guideline? If the filter is dirty, replace it.
How much does a new furnace cost?
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How much does a new furnace cost?
The average cost of a furnace unit is $2,300 to $7,200, plus $150 to $500 per hour for installation. Furnace replacement prices depend on the type of furnace you need, its size, and local labor costs.
- Gas: $3,800–$10,000
- Electric: $2,000–$7,000
- Oil: $6,750–$10,000
- Mini-Split: $2,000–$15,000
- Geothermal: $4,000–$17,000
If your furnace installation requires new gas lines or additional ductwork, add $250 to $800 for the gas lines and $3,00 to $5000 on average for the ductwork to your overall project costs.
Top Heating & Furnace Systems Projects
- Install a Geothermal Heating or Cooling System
- Install a Radiant Floor Heating System
- Install or Replace a Boiler or Radiator Heating System
- Install or Replace a Heat Pump
- Install or Replace a Thermostat
- Install or Replace Ductwork
- Install or Replace Furnace or Forced Air Heating System
- Repair or Service a Boiler or Radiator Heating System
- Repair or Service a Heat Pump
- Repair or Service Furnace or Forced Air Heating System
HomeAdvisor Community Rating
Castro Valley Heating & Furnace Contractors are rated 4.4 out of 5 based on 1,074 reviews of 21 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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Recent Job Requests for Heating & Furnace Contractors in Castro Valley, CA
NewProject: Geothermal Heating or Cooling Install Location: Castro Valley, CADate: 03/25/23Current Heating System: Gas-fired forced air(central heating)Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingComment: Need a furnace inspection and possible replacementNewProject: Gas Furnace - Repair Location: Castro Valley, CADate: 03/22/23Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingLocation: Home/ResidenceIs this an emergency?: NoCurrent Heating System: Natural gas firedComment: Air coming out of vents is cold. When thermostat turned to OFF, air still coming out as if it were on. Took out batteries. Cool air still coming out and system wonât go off.Project: Heat Pump Repair Location: Castro Valley, CADate: 03/18/23Location: Home/ResidenceIs this an emergency?: NoDesired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingProject: Electric Furnace - Install Location: Castro Valley, CADate: 03/08/23Nature of Project: Replace existing central heating systemAge of Heating Equipment: Less than 5 yearsKind of Heating System: Electric firedLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingOther Features: Electronic air cleanerComment: We just put in a new air conditioning unit with our central gas heating. Because of increase in natural gas prices, we are wondering what it would cost to convert to electric, including replacement of gas water heater w electric, preferably, tankless. We have a 200 Amp service, but would probably need a panel upgrade. Also considering solar, and ev charging unit.Project: Heat Pump Repair Location: Castro Valley, CADate: 03/02/23Location: Home/ResidenceIs this an emergency?: YesDesired Completion Date: Timing is flexibleAfter Business Hours: YesCovered by Insurance: NoComment: The furnace is in the attic and it's relatively easy to access. First, the thermostat wasn't communicating with the furnace. I replaced the batteries but there was no improvement. The next day, the thermostat is sending a signal to the furnace to start or stop. However, only cold air flows.Project: Heat Pump Install Location: Castro Valley, CADate: 02/28/23Install or Replace: Installing newHeating System Type: Gas-fired forced air (central heating)Heat pump type wanted: Air sourceLocation: Home/ResidenceDesired Completion Date: Within 1 weekRequest Stage: Planning & BudgetingComment: Existing gas furnace needs to removed. No AC unit on old furnace. Located in basement ( 4 ft of clearance). Looking for two stage heat pump with Merv 13 or better filter. UV also. An AC line set will need to be run.Project: Gas Furnace - Repair Location: Castro Valley, CADate: 02/25/23Current Heating System: Natural gas firedLocation: Home/ResidenceIs this an emergency?: NoDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireComment: Pilot light is out on floor furnace