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Find Swamp cooler installers and replacers in Diamond Bar

Avatar for Aace's Heating Air Conditioning & Swamp Coolers

Aace's Heating Air Conditioning & Swamp Coolers

4.91(
64
)
Approved Pro

Aace's Heating Air Conditioning & Swamp Coolers

4.91(
64
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
68 local quotes requested

Aace's Heating Air Conditioning & Swamp Coolers 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 12 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!

"The job was done very well; but there was some follow-up items to complete afterwards and that was done to our full satisfaction."

Sheldon W on November 2025

Aace's Heating Air Conditioning & Swamp Coolers 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 12 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!

"The job was done very well; but there was some follow-up items to complete afterwards and that was done to our full satisfaction."

Sheldon W on November 2025


"The work that was done by this Business was beyond my families expectations. Sat down and talked with us about the best options of units to choose from. That right there built the trust and this why he is our go to guy and highly recommended to our friends and family !!! Thanks for your service to the community and my family !"

Dominique U on November 2024

We specialize in residential and light commercial HVAC equipment, installation, and repair and maintenance. Over 11 years experience.

"The work that was done by this Business was beyond my families expectations. Sat down and talked with us about the best options of units to choose from. That right there built the trust and this why he is our go to guy and highly recommended to our friends and family !!! Thanks for your service to the community and my family !"

Dominique U on November 2024


Avatar for Belle Air Services

Belle Air Services

4.71(
14
)
Approved Pro

Belle Air Services

4.71(
14
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
50 local quotes requested

Belle Air Services is a premier, all-inclusive HVAC contractor in the Los Angeles metro area. We are dedicated to providing our clients with the very best in installation, service, and repair for their heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating, and Furnace systems, as well as a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"Had them do 2 units on my property. The first one was great, the pre team is great, and the guys who actually do the work. After the 2nd one, where I chose the more expensive option to get a Mitsubishi Heat Pump, the unit would not turn the fan on some of the time. I told them, and wasted insane amounts of time. They kept saying things like 'I am trying to understand what doesn't work.' 'Pretty simple, you choose to run the fan to simply circulate the air and the icon goes, Nest thinks it is on, but does not go on.' Then they said they were going to have a Mitsubishi tech come out and for sure it would get resolved. Never happened. Just listened to a book on Benjamin Franklin and he and John Adams had to share a bed one time while traveling and Adams went to close the window and Franklin said this place will be a tomb if you do. That was what 250 years ago? and HVAC is their business? Guess I will have to take them to court. The office staff post job is a clown car of silly children. So if your job goes great, they will be a good choice. If you run into an issue you will wish you hired ANYONE else. You've been warned."

ROB W on April 2024

Belle Air Services is a premier, all-inclusive HVAC contractor in the Los Angeles metro area. We are dedicated to providing our clients with the very best in installation, service, and repair for their heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating, and Furnace systems, as well as a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"Had them do 2 units on my property. The first one was great, the pre team is great, and the guys who actually do the work. After the 2nd one, where I chose the more expensive option to get a Mitsubishi Heat Pump, the unit would not turn the fan on some of the time. I told them, and wasted insane amounts of time. They kept saying things like 'I am trying to understand what doesn't work.' 'Pretty simple, you choose to run the fan to simply circulate the air and the icon goes, Nest thinks it is on, but does not go on.' Then they said they were going to have a Mitsubishi tech come out and for sure it would get resolved. Never happened. Just listened to a book on Benjamin Franklin and he and John Adams had to share a bed one time while traveling and Adams went to close the window and Franklin said this place will be a tomb if you do. That was what 250 years ago? and HVAC is their business? Guess I will have to take them to court. The office staff post job is a clown car of silly children. So if your job goes great, they will be a good choice. If you run into an issue you will wish you hired ANYONE else. You've been warned."

ROB W on April 2024


Avatar for Trinity Heating and AC

Trinity Heating and AC

5.00(
9
)
Approved Pro

Trinity Heating and AC

5.00(
9
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 local quotes requested

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Chris was able to fix our ac unit, where my old account guy said we NEEDED to replace it!!! Plus Chris is very personable and I believe he is very honest and forthcoming as he could have sold us a new system, but found us a much cheaper option!!"

Sonja H on June 2025

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Chris was able to fix our ac unit, where my old account guy said we NEEDED to replace it!!! Plus Chris is very personable and I believe he is very honest and forthcoming as he could have sold us a new system, but found us a much cheaper option!!"

Sonja H on June 2025


Avatar for Magnolia Heating & Cooling Inc

Magnolia Heating & Cooling Inc

4.80(
729
)
Approved Pro

Magnolia Heating & Cooling Inc

4.80(
729
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
43 local quotes requested

100% customer satisfaction is our top priority. Please check out our 2500+ 5 star reviews across the internet with an 5 Star A+ rating. Homeowners, expect nothing but the best from their HVAC contractor, and Magnolia Heating and Cooling is ready to exceed your expectations. Call today for AC or Heater Repairs, Replacement, Installation or any other service.

"As always, Magnolia exceeded expectations. Christian, my technician, was prompt, personable and proficient. I am more than satisfied with my service visit."

Rick B on August 2023

100% customer satisfaction is our top priority. Please check out our 2500+ 5 star reviews across the internet with an 5 Star A+ rating. Homeowners, expect nothing but the best from their HVAC contractor, and Magnolia Heating and Cooling is ready to exceed your expectations. Call today for AC or Heater Repairs, Replacement, Installation or any other service.

"As always, Magnolia exceeded expectations. Christian, my technician, was prompt, personable and proficient. I am more than satisfied with my service visit."

Rick B on August 2023


Avatar for Harmony Electrical, Plumbing and Air

Harmony Electrical, Plumbing and Air

5.00(
12
)
Approved Pro

Harmony Electrical, Plumbing and Air

5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1092 local quotes requested

Harmony Electrical, Plumbing and Air is dedicated to delivering exceptional electrical, plumbing and Air services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!

"Tyler was excellent and Brian was very accommodating for my schedule. I would definitely use them in the future."

Pixie B on September 2025

Harmony Electrical, Plumbing and Air is dedicated to delivering exceptional electrical, plumbing and Air services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!

"Tyler was excellent and Brian was very accommodating for my schedule. I would definitely use them in the future."

Pixie B on September 2025


Avatar for Efficient Incorporated

Efficient Incorporated

5.00(
3
)
Approved Pro

Efficient Incorporated

5.00(
3
)
Approved Pro
Customers say: Quick response
46 local quotes requested
13 years of experience

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Went smoothly, very responsive, really pleasant to work with."

A W on October 2023

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Went smoothly, very responsive, really pleasant to work with."

A W on October 2023


Avatar for HD MECHANICAL INC

HD MECHANICAL INC

5.00(
24
)
Approved Pro

HD MECHANICAL INC

5.00(
24
)
Approved Pro
Super Service Award
Customers say: Quick response
126 local quotes requested
3 years of experience

We are small family operated company that has been in the HVAC industry for over 15years . We believe in honesty and good reliable timely service. As a licensed and certified company, we believe strongly in resolving any issues without up selling any unnecessary products and services. We treat every customer as if they are part of our family . CALL HD MECHANICAL TODAY for your free in home or business estimate.

"HD Mechanical did an excellent job. After trying to fix my water heater, the tech offered me two solutions, the first to repair the old unit and the second to replace it. I chose to replace the unit because it was 20 years old. He was able to return in two days and spend many hours at my home. The tech was courteous, professional, explained everything and made sure everything was working properly before he left. "

Judy N on December 2025

We are small family operated company that has been in the HVAC industry for over 15years . We believe in honesty and good reliable timely service. As a licensed and certified company, we believe strongly in resolving any issues without up selling any unnecessary products and services. We treat every customer as if they are part of our family . CALL HD MECHANICAL TODAY for your free in home or business estimate.

"HD Mechanical did an excellent job. After trying to fix my water heater, the tech offered me two solutions, the first to repair the old unit and the second to replace it. I chose to replace the unit because it was 20 years old. He was able to return in two days and spend many hours at my home. The tech was courteous, professional, explained everything and made sure everything was working properly before he left. "

Judy N on December 2025


Avatar for Air-Tech Air Conditioning & Heating Inc

Air-Tech Air Conditioning & Heating Inc

4.83(
174
)
Approved Pro

Air-Tech Air Conditioning & Heating Inc

4.83(
174
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
66 local quotes requested

If you're looking for comfort you can count on, you've found the right place! Whether you need service-and need it fast-or you're looking to replace or invest in new equipment for your home, AirTech Air Conditioning & Heating can help. Ask around... our name is well known and respected in because we care about impressing you so much that you'll want to call us next time and every time. Award-winning Air Conditioning & Heating Company including the Angie's List Super Service Award. Free estimates on replacement systems, new installations and duct cleaning/air purification. Servicing all major brands, makes and models for central and ductless/mini-split systems. Financing is available. AirTech is a participating HERO contractor.

"Air-Tech is one of the most professional companies I have ever dealt with. My first contact with the office was exceptional. They had Jose at my house the next day. Jose did a great job of trouble shooting the problem with my furnace and showed me which part was defective. He had to special order the replacement parts which took a few days. Soon after he left, someone dropped off two space heaters to keep our house warm until the parts arrived. Jose then installed the new parts and checked out the entire furnace to see if there were other problems. He took photos to help show what the problem was. He was efficient, conscientious, polite and thorough. The office staff and Jose kept me up to date on when he would arrive at my home. I wouldn’t hesitate to use Air-Tech again if the need arises. They are top notch. "

John H on December 2025

If you're looking for comfort you can count on, you've found the right place! Whether you need service-and need it fast-or you're looking to replace or invest in new equipment for your home, AirTech Air Conditioning & Heating can help. Ask around... our name is well known and respected in because we care about impressing you so much that you'll want to call us next time and every time. Award-winning Air Conditioning & Heating Company including the Angie's List Super Service Award. Free estimates on replacement systems, new installations and duct cleaning/air purification. Servicing all major brands, makes and models for central and ductless/mini-split systems. Financing is available. AirTech is a participating HERO contractor.

"Air-Tech is one of the most professional companies I have ever dealt with. My first contact with the office was exceptional. They had Jose at my house the next day. Jose did a great job of trouble shooting the problem with my furnace and showed me which part was defective. He had to special order the replacement parts which took a few days. Soon after he left, someone dropped off two space heaters to keep our house warm until the parts arrived. Jose then installed the new parts and checked out the entire furnace to see if there were other problems. He took photos to help show what the problem was. He was efficient, conscientious, polite and thorough. The office staff and Jose kept me up to date on when he would arrive at my home. I wouldn’t hesitate to use Air-Tech again if the need arises. They are top notch. "

John H on December 2025


Avatar for Alpine Plumbing, Heating, and Air

Alpine Plumbing, Heating, and Air

4.71(
28
)
Approved Pro

Alpine Plumbing, Heating, and Air

4.71(
28
)
Approved Pro
Super Service Award
Customers say: Quick response
63 local quotes requested
11 years of experience

Need fast, reliable plumbing help? Alpine Plumbing & Rooter serves residents and business owners throughout San Dimas, La Verne, and surrounding areas with expert services. Call the plumbers you can trust when you’re faced with a problem you need fixed right away. We have the fastest response time in the area - we’ll be at your door within 90 minutes! We put our customers first - one call can solve your home plumbing issues. We are a local, family owned and operated company based in San Dimas, specializing in drain cleaning, sewer replacement, and sewer repair services. Call the plumbers you can trust to schedule an appointment today.

"Mike came out and helped us with our plumbing issue, great service!"

Noah R on September 2025

Need fast, reliable plumbing help? Alpine Plumbing & Rooter serves residents and business owners throughout San Dimas, La Verne, and surrounding areas with expert services. Call the plumbers you can trust when you’re faced with a problem you need fixed right away. We have the fastest response time in the area - we’ll be at your door within 90 minutes! We put our customers first - one call can solve your home plumbing issues. We are a local, family owned and operated company based in San Dimas, specializing in drain cleaning, sewer replacement, and sewer repair services. Call the plumbers you can trust to schedule an appointment today.

"Mike came out and helped us with our plumbing issue, great service!"

Noah R on September 2025

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FAQs for swamp cooler installation and replacement projects in Diamond Bar, CA

Swamp coolers are quite energy-efficient, using only 15% to 35% of the electricity that traditional central air conditioning units consume. This can lead to significant savings on your energy bills. However, keep in mind that swamp coolers require water to operate and may not cool your home as effectively in extremely hot or humid conditions. When considering overall efficiency, it is essential to weigh both electricity and water usage, as well as the cooling needs specific to your local climate.

Evaporative coolers only work in dry climates because they cool by moistening the air. If the air is already moist, this will have little to no cooling effect. Central AC is a better choice if you live in a humid climate, such as the Midwest, eastern, or western coastal regions.

To install a swamp cooler on a roof, a local HVAC specialist will first find and cut a spot free of wiring and obstructions. They’ll then install metal bracing, legs, brackets, the ceiling duct register, ductwork, power, and thermostat wires. Once installed, they’ll seal all openings, attach duct connections, and install a thermostat. Before leaving, they’ll run cool water piping to the unit and inspect all the connections.

The cost to repair your swamp cooler ranges from $50 to $600, depending on the issue, whether new parts are needed, and the chosen repair service. Depending on the type of pad your system uses, you will need to change out the pads every one to three years for proper operation. When budgeting for the cost to repair a window unit, expect to pay around $230.

The U.S. Department of Energy states that swamp coolers can cool a single room by five to 15 degrees Fahrenheit. However, this largely depends on the size and installation method of the evaporative cooler. You can only achieve these results in a dry climate, such as the American South, as it’s easier to cool rooms in humid environments with central air.

Swamp cooler water usage varies depending on the size of the unit. Smaller evaporative units may use one gallon per hour, while much larger units could use up to 15 gallons of water per hour. Most homeowners can expect their unit to use between seven and 10 gallons of water per hour of usage.

The Diamond Bar, CA homeowners’ guide to swamp cooler installations and replacements

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