Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in San Lorenzo, CA

There are 22 highly-rated local heating and air conditioning pros.

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon244
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in San Lorenzo

Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4430 Yankee Hill Rd
4.64(
655
)
Approved Pro

Service Champions Heating & Air Conditioning

4430 Yankee Hill Rd
4.64(
655
)
Approved Pro
Customers say: Super punctual
437 local quotes requested
22 years of experience

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"

Lain L on September 2025


Avatar for Albert Nahman Plumbing, Heating, and Cooling

Albert Nahman Plumbing, Heating, and Cooling

3333 Martin Luther King Jr Way
4.45(
686
)
Approved Pro

Albert Nahman Plumbing, Heating, and Cooling

3333 Martin Luther King Jr Way
4.45(
686
)
Approved Pro
Customers say: Super punctual
690 local quotes requested
44 years of experience

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!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 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!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 2025


Avatar for Qualtech Heating & Cooling

Qualtech Heating & Cooling

4115 Blackhawk Plaza Circle
3.00(
4
)
Approved Pro

Qualtech Heating & Cooling

4115 Blackhawk Plaza Circle
3.00(
4
)
Approved Pro
Customers say: Quick response
85 local quotes requested
18 years of experience

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


Avatar for Smart Heating and Air Conditioning, Inc.

Smart Heating and Air Conditioning, Inc.

1717 Solano Way
5.00(
12
)
Approved Pro

Smart Heating and Air Conditioning, Inc.

1717 Solano Way
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
102 local quotes requested

Smart Heating and Air Conditioning has what you need when it comes to AC Repair and Furnace Repair, with over 20+ years of experience. From small to large A/C Repair or Furnace Repair to routine maintenance, Smart Heating and Air Conditioning specializes in repair, service and maintenance of your home's Central Heating & Cooling, Ductwork, or Indoor Air Quality / Filtration. Not to mention Smart HVAC excellent equipment replacement and installations. Cities we service throughout Contra Costa and Alameda County include: Alameda, Alamo, Antioch, Berkeley, Brentwood, Clayton, Clyde, Concord, Danville, Diablo, Discovery Bay, Dublin, El Cerrito, Hayward, Hercules, Kensington, Lafayette, Livermore, Martinez, Montclair, Moraga, Oakland, Oakley, Orinda, Piedmont, Pittsburg, Pleasant Hill, Pleasanton, Rossmoor, San Ramon, San Leandro and Walnut Creek, CA. Call today for your free estimate on equipment.

"Came on time, did a lot of work, all clean, explained about the furnace and that all is ok."

MATT W on October 2025

Smart Heating and Air Conditioning has what you need when it comes to AC Repair and Furnace Repair, with over 20+ years of experience. From small to large A/C Repair or Furnace Repair to routine maintenance, Smart Heating and Air Conditioning specializes in repair, service and maintenance of your home's Central Heating & Cooling, Ductwork, or Indoor Air Quality / Filtration. Not to mention Smart HVAC excellent equipment replacement and installations. Cities we service throughout Contra Costa and Alameda County include: Alameda, Alamo, Antioch, Berkeley, Brentwood, Clayton, Clyde, Concord, Danville, Diablo, Discovery Bay, Dublin, El Cerrito, Hayward, Hercules, Kensington, Lafayette, Livermore, Martinez, Montclair, Moraga, Oakland, Oakley, Orinda, Piedmont, Pittsburg, Pleasant Hill, Pleasanton, Rossmoor, San Ramon, San Leandro and Walnut Creek, CA. Call today for your free estimate on equipment.

"Came on time, did a lot of work, all clean, explained about the furnace and that all is ok."

MATT W on October 2025


Avatar for DUKES HEATING & AIR CONDITIONING

DUKES HEATING & AIR CONDITIONING

36601 Newark Blvd #10
4.89(
127
)
Approved Pro

DUKES HEATING & AIR CONDITIONING

36601 Newark Blvd #10
4.89(
127
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
20 years of experience

Dukes Heating & Air Conditioning is in HVAC business for 37 years now and continuously remains on the top of the industry. We do this by providing honesty and good workmanship that our customers love the most. We- Dukes Heating & Air Conditioning , also make sure that we have the latest technology that enables us to be more competitive & expert in the field and stand behind any work we have performed. Our in-house employees are all professionally trained and deliver only excellence to whatever project they work on.

"Great service"

Noah H on October 2023

Dukes Heating & Air Conditioning is in HVAC business for 37 years now and continuously remains on the top of the industry. We do this by providing honesty and good workmanship that our customers love the most. We- Dukes Heating & Air Conditioning , also make sure that we have the latest technology that enables us to be more competitive & expert in the field and stand behind any work we have performed. Our in-house employees are all professionally trained and deliver only excellence to whatever project they work on.

"Great service"

Noah H on October 2023


Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

3266 Investment Blvd
4.66(
387
)
Approved Pro

Bell Brothers Plumbing Heating & Air

3266 Investment Blvd
4.66(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
56 local quotes requested

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023


Avatar for Jim's Heating and Air Conditioning

Jim's Heating and Air Conditioning

3781 Daniel Drive
New on AngiNew on Angi
Approved Pro

Jim's Heating and Air Conditioning

3781 Daniel Drive
New on AngiNew on Angi
Approved Pro
58 local quotes requested
5 years of experience

At Jim's Heating and Air Conditioning, 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.

At Jim's Heating and Air Conditioning, 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.


Avatar for BARR-951 Construction

BARR-951 Construction

6518 3rd Street
5.00(
2
)

BARR-951 Construction

6518 3rd Street
5.00(
2
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

My name is Amilcar Barrientos and I'm offering my services as a General Contractor. With over 20 years of experience in residential and commercial construction, I started BARR951 construction company 3 years ago to embark on this independent journey. We specialize in all types of construction and remodeling such as fences, decks, concrete, paint, plumbing, roofing, kitchens, bathrooms, flooring, and more. Additionally, we provide project management services and offer free estimates. Feel free to reach out to us at [email protected] or 415.216.7460. There is no limit for imagination, our commitment is to deliver quality and exceed client expectations. Mi nombre es Amilcar Barrientos y ofrezco mis servicios como Contratista General. Con más de 20 años de experiencia en construcción residencial y comercial, comencé mi compania BARR951 en construcción hace 3 años para embarcarme en este viaje independiente. Nos especializamos en todo tipo de construcción y remodelación como cercas, terrazas, concreto, pintura, plomería, techos, cocinas, baños, pisos y más. Además, brindamos servicios de manejo de proyectos y ofrecemos presupuestos gratuitos. No dude en comunicarse con nosotros al [email protected] o al 415.216.7460. No hay limite para la imaginacion, nuestro compromiso es la calidad y sobrepasar las expectativas de nuestros clientes.

"Five star quality, very professional. I was very impressed and satisfied with the work they have done."

Jimmy T on November 2024

My name is Amilcar Barrientos and I'm offering my services as a General Contractor. With over 20 years of experience in residential and commercial construction, I started BARR951 construction company 3 years ago to embark on this independent journey. We specialize in all types of construction and remodeling such as fences, decks, concrete, paint, plumbing, roofing, kitchens, bathrooms, flooring, and more. Additionally, we provide project management services and offer free estimates. Feel free to reach out to us at [email protected] or 415.216.7460. There is no limit for imagination, our commitment is to deliver quality and exceed client expectations. Mi nombre es Amilcar Barrientos y ofrezco mis servicios como Contratista General. Con más de 20 años de experiencia en construcción residencial y comercial, comencé mi compania BARR951 en construcción hace 3 años para embarcarme en este viaje independiente. Nos especializamos en todo tipo de construcción y remodelación como cercas, terrazas, concreto, pintura, plomería, techos, cocinas, baños, pisos y más. Además, brindamos servicios de manejo de proyectos y ofrecemos presupuestos gratuitos. No dude en comunicarse con nosotros al [email protected] o al 415.216.7460. No hay limite para la imaginacion, nuestro compromiso es la calidad y sobrepasar las expectativas de nuestros clientes.

"Five star quality, very professional. I was very impressed and satisfied with the work they have done."

Jimmy T on November 2024


Avatar for SMB servs

SMB servs

5.00(
5
)

SMB servs

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I work for general construction for the last 10 years, doing different projects like plumbing, electrical, paint, carpenter, hardwood flooring, tile, windows, drywall, etc.

"Great! Salvador Benavente did an excellent job, efficient, knowledgeable, courteous, reasonably priced & friendly. Will definitely use his services again."

Toula S on July 2025

I work for general construction for the last 10 years, doing different projects like plumbing, electrical, paint, carpenter, hardwood flooring, tile, windows, drywall, etc.

"Great! Salvador Benavente did an excellent job, efficient, knowledgeable, courteous, reasonably priced & friendly. Will definitely use his services again."

Toula S on July 2025


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Heating and Air Conditioning questions, answered by experts

Unfortunately, a freon leak will persist even when your AC unit is off. The freon in the AC unit is under pressure no matter the status of the system, so it will continue to drip through the leak even when you shut off the entire unit. It will continue to leak freon until it’s completely empty.

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

The standard HVAC warranty is around five years. Still, many brands offer an extension to 10 years if you register the product within a specific timeframe, typically 60 to 90 days post-purchase or HVAC installation. Over the past decade, warranty periods have substantially increased, shifting from 3-5 years in the 90s to the now-prevalent 10+ year warranties. Both warranty types cover parts failing due to manufacturer defects, incurring no additional costs. Some manufacturers provide extended warranties surpassing the usual 15- to 20-year window, though these often involve extra fees. 

The San Lorenzo, CA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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