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Window a/c unit installers in Hercules

Avatar for Aleksandar Kastamanov

Aleksandar Kastamanov

101 Kendall Road
4.58(
45
)
•Approved Pro

Aleksandar Kastamanov

101 Kendall Road
4.58(
45
)
•Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
25 years of experience

Aleksandar Kastamanov has been in the residential construction business for the last two decades. Please get in touch with us for any of your bathroom, kitchen or major renovations and we can help. Covering Lafayette and Orinda.Call us today!

"Generally, I refrain from writing reviews for companies unless they perform their work beyond my expectations, Kastamamanov Construction happens to be one of those companies. Aleksandar Kastamanov and his son Aleks are both Perfectionists and men of good character they both demonstrate a willingness to work with you to address any concerns that arise during the project, they do quality work at a very competitive price, they are easy to work with, *accommodating and go beyond basic requirements for the sake of quality, safety, and stability. During the inspection the county inspector kept saying things like,* good job and most guys do not take the time to do that , referring to the qualify work they had done. They both demonstrate attention to details and invite input of ideas to see that you are happy with their work. This deck that Aleks replaced for me I built 50 years ago so I know what it takes to build a structure that will last through many years of use. Well, having watched their work from beginning to end I can tell you that Aleksander and Aleks have constructed a beautiful deck for us that is built to last for many many years. Attention to detail started when demolition began and lasted throughout the project until the final strand of stainless steel railing was installed. If you want a new deck or an old deck replaced there is a lot of contractors to choose from around but, if you want your project done right, done beyond the bare minimum required according to your City and County permits, and built at a very and competitive price, Kastamanov construction is the company for you. Aleksandar and his son Aleks are both men of integrity and good character, they are both easy to work with skilled and knowledgeable. Any future projects that I have, both interior and exterior will include a prejudiced request for a bid from Kastamanov construction."

Louis P on November 2020

Aleksandar Kastamanov has been in the residential construction business for the last two decades. Please get in touch with us for any of your bathroom, kitchen or major renovations and we can help. Covering Lafayette and Orinda.Call us today!

"Generally, I refrain from writing reviews for companies unless they perform their work beyond my expectations, Kastamamanov Construction happens to be one of those companies. Aleksandar Kastamanov and his son Aleks are both Perfectionists and men of good character they both demonstrate a willingness to work with you to address any concerns that arise during the project, they do quality work at a very competitive price, they are easy to work with, *accommodating and go beyond basic requirements for the sake of quality, safety, and stability. During the inspection the county inspector kept saying things like,* good job and most guys do not take the time to do that , referring to the qualify work they had done. They both demonstrate attention to details and invite input of ideas to see that you are happy with their work. This deck that Aleks replaced for me I built 50 years ago so I know what it takes to build a structure that will last through many years of use. Well, having watched their work from beginning to end I can tell you that Aleksander and Aleks have constructed a beautiful deck for us that is built to last for many many years. Attention to detail started when demolition began and lasted throughout the project until the final strand of stainless steel railing was installed. If you want a new deck or an old deck replaced there is a lot of contractors to choose from around but, if you want your project done right, done beyond the bare minimum required according to your City and County permits, and built at a very and competitive price, Kastamanov construction is the company for you. Aleksandar and his son Aleks are both men of integrity and good character, they are both easy to work with skilled and knowledgeable. Any future projects that I have, both interior and exterior will include a prejudiced request for a bid from Kastamanov construction."

Louis P on November 2020

Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

180 Steuart St., Box 194631
4.88(
38
)
•Approved Pro

Prosper Construction Development, Inc.

180 Steuart St., Box 194631
4.88(
38
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
180 local quotes requested

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

Avatar for New Creations

New Creations

1371 Via San Juan
5.00(
5
)
•Approved Pro

New Creations

1371 Via San Juan
5.00(
5
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
106 local quotes requested

We are small company that specializes in exterior and interior painting also any handyman projects. No job is too big or too small! Let us help you with your next project !

"Excellent. Daniel was very professional, knowledgeable, skilled and polite. I will absolutely hire him again and refer him as well."

C F on July 2025

We are small company that specializes in exterior and interior painting also any handyman projects. No job is too big or too small! Let us help you with your next project !

"Excellent. Daniel was very professional, knowledgeable, skilled and polite. I will absolutely hire him again and refer him as well."

C F on July 2025

RSF Construction Inc.

6910 Monte Verde Drive
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

RSF Construction Inc.

6910 Monte Verde Drive
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
190 local quotes requested
6 years of experience

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Avatar for McCormick Home Builders, Inc.

McCormick Home Builders, Inc.

23445 Haynes Street
4.33(
20
)
•Approved Pro

McCormick Home Builders, Inc.

23445 Haynes Street
4.33(
20
)
•Approved Pro
Customers say: True professional
163 local quotes requested
8 years of experience

MCCORMICK HOME BUILDERS INC We're 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 found McCormick home builders through Angie’s list. They were not one of our original contacts, but they contacted us and came out to give us a quote. Matteo was extremely helpful, informative, honest, and gave us reasonable realistic prices, and did not try to inflate the prices or pressure us in anyway. We felt very comfortable with him immediately. We felt like he was a member of the family that we could just talk to and ask questions he was very personable. He gave us his contact number in case we had other questions and he was always available when we needed him for any type of questions or concerns. Mateo‘s team did a beautiful job. They were fast. They were efficient. They cleaned up beautifully. They did a wonderful job. They were very considerate of our time our needs and our neighbors. They were an absolute pleasure to work with. I would highly recommend Matteo from McCormick home builders for any home building projects, and we will be calling him again in the future!"

Sheila C on September 2025

MCCORMICK HOME BUILDERS INC We're 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 found McCormick home builders through Angie’s list. They were not one of our original contacts, but they contacted us and came out to give us a quote. Matteo was extremely helpful, informative, honest, and gave us reasonable realistic prices, and did not try to inflate the prices or pressure us in anyway. We felt very comfortable with him immediately. We felt like he was a member of the family that we could just talk to and ask questions he was very personable. He gave us his contact number in case we had other questions and he was always available when we needed him for any type of questions or concerns. Mateo‘s team did a beautiful job. They were fast. They were efficient. They cleaned up beautifully. They did a wonderful job. They were very considerate of our time our needs and our neighbors. They were an absolute pleasure to work with. I would highly recommend Matteo from McCormick home builders for any home building projects, and we will be calling him again in the future!"

Sheila C on September 2025

ACP Mechanical

457 Cedar River Wy
5.00(
9
)

ACP Mechanical

457 Cedar River Wy
5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We take credit cards. Located in Sacramento, CA, we specialize in Heating, Ventilation and Air Conditioning (HVAC) installation, repair and maintenance. We work with you to make sure you have the most efficient and comfortable system for your home. A proper system can not only help improve air comfort and quality, but it can also help save you money on your energy bills. We are your one stop source that delivers quality work with a service oriented attitude. We service the greater Sacramento Area and neighboring cities. Emergency services available Call 916-704-8556. Ask about our Financing Options!

"Work was done promptly and efficiently."

James C on November 2019

We take credit cards. Located in Sacramento, CA, we specialize in Heating, Ventilation and Air Conditioning (HVAC) installation, repair and maintenance. We work with you to make sure you have the most efficient and comfortable system for your home. A proper system can not only help improve air comfort and quality, but it can also help save you money on your energy bills. We are your one stop source that delivers quality work with a service oriented attitude. We service the greater Sacramento Area and neighboring cities. Emergency services available Call 916-704-8556. Ask about our Financing Options!

"Work was done promptly and efficiently."

James C on November 2019

Avatar for Elite Custom Pools Inc

Elite Custom Pools Inc

4750 Almaden Expy
4.03(
29
)
•Approved Pro

Elite Custom Pools Inc

4750 Almaden Expy
4.03(
29
)
•Approved Pro
Customers say: True professional
1450 local quotes requested
Free onsite estimate

We are Pool & Spa specialists, We provide Installation and remodel for in-ground pools, We offer; Full service Chemical service Chem-plus service, Installation of the newest pool equipment on the market Automation Pool Pumps Pool Filters Pool Cleaners Heaters Salt systems We specialize in; Energy efficient pool equipment that saves the customers up to 90% on electricity, We guarantee CRYSTAL CLEAR WATER in 7 days, We have 15 years experience, We are; CPO- certified pool operator, CPI- certified pool inspector, CAEI- certified aquatic equipment installers We will be happy to answer any questions you might have about your swimming pool

"probably the best contractors i have ever had here. pool was resurfaced and re grouted in a timely manor. all workers were fast and very polite"

sunnyvale m on November 2021

We are Pool & Spa specialists, We provide Installation and remodel for in-ground pools, We offer; Full service Chemical service Chem-plus service, Installation of the newest pool equipment on the market Automation Pool Pumps Pool Filters Pool Cleaners Heaters Salt systems We specialize in; Energy efficient pool equipment that saves the customers up to 90% on electricity, We guarantee CRYSTAL CLEAR WATER in 7 days, We have 15 years experience, We are; CPO- certified pool operator, CPI- certified pool inspector, CAEI- certified aquatic equipment installers We will be happy to answer any questions you might have about your swimming pool

"probably the best contractors i have ever had here. pool was resurfaced and re grouted in a timely manor. all workers were fast and very polite"

sunnyvale m on November 2021

Avatar for Tyndall HVAC Inc.

Tyndall HVAC Inc.

.
4.36(
22
)
•Approved Pro

Tyndall HVAC Inc.

.
4.36(
22
)
•Approved Pro
Customers say: Super punctual
377 local quotes requested
21 years of experience

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 utmost 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.

"still thinking about getting the work done"

Janice B on August 2020

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 utmost 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.

"still thinking about getting the work done"

Janice B on August 2020

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
2834 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 AirGonomics Heating & Cooling

AirGonomics Heating & Cooling

Antioch
5.00(
5
)
•Approved Pro

AirGonomics Heating & Cooling

Antioch
5.00(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

AirGonomics Heating & Cooling provides Honest, Reliable HVAC services for your Home or Business. Whether you require equipment maintenance, replacement or an emergency repair, we are available to serve all of HVAC your needs. Your satisfaction matters. AirGonomics strives for 100% customer satisfaction. Give AirGonomics a call today. We will do our best to exceed your expectations.

"All work was done on schedule and actually under $ budget, which was surprising and nice to see, would definitely use this company again and highly recommend them"

Dave H on June 2024

AirGonomics Heating & Cooling provides Honest, Reliable HVAC services for your Home or Business. Whether you require equipment maintenance, replacement or an emergency repair, we are available to serve all of HVAC your needs. Your satisfaction matters. AirGonomics strives for 100% customer satisfaction. Give AirGonomics a call today. We will do our best to exceed your expectations.

"All work was done on schedule and actually under $ budget, which was surprising and nice to see, would definitely use this company again and highly recommend them"

Dave H on June 2024

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FAQs for window a/c unit installation projects in Hercules, CA

Window AC units can use a significant amount of energy. These units use about 12 to 17 kilowatt-hours per day, significantly more than a refrigerator's one to 1.5 kilowatt-hours per day. To keep your energy costs down, run your window AC only when necessary, keep doors closed to contain the cool air, regularly clean filters and coils, and seal any gaps around the unit to prevent cold air from escaping.

Inexpensive air conditioner units are often not worth it. Low-cost products from popular brands like General Electric, LG, Whirlpool, or Frigidaire may be a reasonable investment. However, putting a small, budget-friendly unit in a large room wastes energy and shortens the life span of the AC since it has to draw more power and work much harder to cool the space. The unit will consume more energy and stress the motor and other internal parts, resulting in early breakdown and costly repairs.

The best deals on window AC units come during the fall when businesses slash prices to clear out old inventory. You can also speak with your local AC installer, who may get you a good deal on a window AC unit since they have access to trade pricing. You can also watch for discontinued products and flash sales in your area.

Window AC repair costs between $110 and $390, with most people paying around $250. Parts cost between $2 and $150, with the rest going toward labor, at around $30 per hour. The occasional one-off repair or a routine AC tuneup cost $75 to $200. Servicing can keep your AC running in good condition for several more years before you need to pay for a replacement unit.

Window AC units last eight to 10 years when installed and maintained correctly. High-quality models last up to 20 years with proper care and routine maintenance. The unit’s longevity depends on its construction quality, regular cleaning, and electrical safety inspections. Keeping the filters and coils clean and addressing minor repairs promptly extends its effective performance and ensures reliable cooling.

The Hercules, CA homeowners’ guide to window a/c unit installations

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

See all articles
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