Get matched with top heating and air conditioning pros in Diamond Bar, CA
There are 55 highly-rated local heating and air conditioning pros.
Matching on Angi
Verified Reviews for Heating And Air Conditioning Service pros in Diamond Bar, CA
*The Angi rating for Heating And Air Conditioning Service companies in Diamond Bar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Diamond Bar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on March 03, 2025
Heating and air conditioning pros in Diamond Bar
J Martin Indoor Air Quality is your go to heating and air professional! We are locally and family owned and operated and have been in business since 2014, proudly serving Yorba Linda and the surrounding Southern California community. With unparalleled expertise and a precise focus on 100% customer satisfaction, our goal is to make your heating and air conditioning needs easy and stress free. From installation to service, central air conditioners to heat pumps, we will make sure the climate in your house is efficient and comfortable! Please give us a call today to see if we can be of service. Thank you and God Bless!
"Verry good"
Long H on February 2023
J Martin Indoor Air Quality is your go to heating and air professional! We are locally and family owned and operated and have been in business since 2014, proudly serving Yorba Linda and the surrounding Southern California community. With unparalleled expertise and a precise focus on 100% customer satisfaction, our goal is to make your heating and air conditioning needs easy and stress free. From installation to service, central air conditioners to heat pumps, we will make sure the climate in your house is efficient and comfortable! Please give us a call today to see if we can be of service. Thank you and God Bless!
"Verry good"
Long H on February 2023
Trinity Heating and AC is so much more than another heating/AC company. We take great pride in our work, attention to detail and customer service. We often times exceed our customer’s expectations and standards in a number of ways. We arrive within the promised time frame and leave our work space cleaner then we found it! Also, 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. We are service focused company that offers maintenance and repair services as well. Maybe 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 here to help!
"Perfect. All done in one day and the installation looks like it was done by a surgeon."
Lawrence F on February 2025
Trinity Heating and AC is so much more than another heating/AC company. We take great pride in our work, attention to detail and customer service. We often times exceed our customer’s expectations and standards in a number of ways. We arrive within the promised time frame and leave our work space cleaner then we found it! Also, 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. We are service focused company that offers maintenance and repair services as well. Maybe 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 here to help!
"Perfect. All done in one day and the installation looks like it was done by a surgeon."
Lawrence F on February 2025
Heating and air conditioning specialists: We are a team of experienced professionals providing Residential Quality Heating and Air conditioning services, weather you need routine maintenance, emergency repairs or new installation. We are here to provide year round comfort at competitive pricing...
"Javier was excellent. They serviced two of my AC units. No BS, honest and straightforward. Will be counting on them going forward."
Cesar R on March 2025
Heating and air conditioning specialists: We are a team of experienced professionals providing Residential Quality Heating and Air conditioning services, weather you need routine maintenance, emergency repairs or new installation. We are here to provide year round comfort at competitive pricing...
"Javier was excellent. They serviced two of my AC units. No BS, honest and straightforward. Will be counting on them going forward."
Cesar R on March 2025
RKM heating and air conditioning is a full service contractor for your heating, cooling, air conditioning and air quality needs. Our technicians are continually trained to ensure top level performance in all areas of service, repair installation and design. Our specialist can help insure your family’s safety in your home with eco friendly solutions and air quality and air purification products. Licensed C20, Nate, green, Honeywell contractor pro, hers certified. Award winning. HEPA air duct cleaning and dryer vent cleaning, Furnace cooling and air purification specialist Hero and Sanbag approved. Additional DBAs - RKM Heating and Air Conditioning, R K M Heating and Air Conditioning, RKM Heating & Air Conditioning.
"cassandra answered all my questions and gave great customer service"
Kenneth H on November 2023
RKM heating and air conditioning is a full service contractor for your heating, cooling, air conditioning and air quality needs. Our technicians are continually trained to ensure top level performance in all areas of service, repair installation and design. Our specialist can help insure your family’s safety in your home with eco friendly solutions and air quality and air purification products. Licensed C20, Nate, green, Honeywell contractor pro, hers certified. Award winning. HEPA air duct cleaning and dryer vent cleaning, Furnace cooling and air purification specialist Hero and Sanbag approved. Additional DBAs - RKM Heating and Air Conditioning, R K M Heating and Air Conditioning, RKM Heating & Air Conditioning.
"cassandra answered all my questions and gave great customer service"
Kenneth H on November 2023
.png){kind=logo}
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
Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.
"Repairman didn't clean up after this one"
Norma H on October 2024
Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.
"Repairman didn't clean up after this one"
Norma H on October 2024
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!
"Great. Took care of problem."
Kevin B on October 2024
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!
"Great. Took care of problem."
Kevin B on October 2024
We’ve been around since 2002 and our staff has over 20 years of experience in the field. We're knowledgeable, fully trained on a full range of HVAC products, maintenance and technology. We offer professional services and quality work because your home is the place where you should be able to breathe easy and be comfortable, no matter what time of the year it is! Aside from offering excellent services, we also offer a wide range of high technology and innovative HVAC products. When you work with Temp Air System Inc., you’ll find products that may be more efficient and overall reduce your utility costs. We make sure you're 100% satisfied and that we are 100% prepared – that’s experience you can count on! Whether you need heating or cooling services such as repair and maintenance or you need to replace your HVAC system, we’re ready to help. We offer financing at zero money down and zero interest. Payments as low as $149 for new system! (WAC) Please call us for full details!
"Temp Air personnel are responsible, honest, knowledgable, and their customer service is top of the line. They were accommodating with a scheduled that worked for us. Also, the techs that came to our house were professionals and answered all of our questions. I highly recommend them."
Yeni P on September 2020
We’ve been around since 2002 and our staff has over 20 years of experience in the field. We're knowledgeable, fully trained on a full range of HVAC products, maintenance and technology. We offer professional services and quality work because your home is the place where you should be able to breathe easy and be comfortable, no matter what time of the year it is! Aside from offering excellent services, we also offer a wide range of high technology and innovative HVAC products. When you work with Temp Air System Inc., you’ll find products that may be more efficient and overall reduce your utility costs. We make sure you're 100% satisfied and that we are 100% prepared – that’s experience you can count on! Whether you need heating or cooling services such as repair and maintenance or you need to replace your HVAC system, we’re ready to help. We offer financing at zero money down and zero interest. Payments as low as $149 for new system! (WAC) Please call us for full details!
"Temp Air personnel are responsible, honest, knowledgable, and their customer service is top of the line. They were accommodating with a scheduled that worked for us. Also, the techs that came to our house were professionals and answered all of our questions. I highly recommend them."
Yeni P on September 2020
Air conditioning and heating, ducts with over 25 years of experience. We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"Absolutely great work."
glenn b on February 2025
Air conditioning and heating, ducts with over 25 years of experience. We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"Absolutely great work."
glenn b on February 2025
The industry's best technicians make the happiest customers. Turn to the pros at All City Plumbing, Air, & Electrical for all of your plumbing, HVAC, and electrical needs. Proudly serving San Bernardino, Riverside, Los Angeles, and Orange Counties. We have over 5000s 5 star reviews across the web from our thrilled customers. Our company goal is to make sure that we have 100% customer satisfaction. We have options and payment plans that can fit in everyones budget. We provide free estimates and you only pay when you're happy. It's no surprise we've received the Angie's List Super Service Award six years in a row! Established in 2009. ACP was created to deliver exceptional service with the highest quality of craftsmanship. We guarantee you will be happy with our services in that we offer a money back guarantee. Our technicians are regarded by their peers to be some of the best in the industry. Our service experts are continuously trained. There isn't a plumbing or hvac problem we can't solve. We have the experience, knowledge and focus to solve any problem you may have. Give us a call today and let us earn your confidence.
"Michael arrived to fix our main water line after it ruptured. He was able to quickly replace the main riser and also had time to take care of a couple other repairs around the house that needed attention. Great service."
Damian C on March 2025
The industry's best technicians make the happiest customers. Turn to the pros at All City Plumbing, Air, & Electrical for all of your plumbing, HVAC, and electrical needs. Proudly serving San Bernardino, Riverside, Los Angeles, and Orange Counties. We have over 5000s 5 star reviews across the web from our thrilled customers. Our company goal is to make sure that we have 100% customer satisfaction. We have options and payment plans that can fit in everyones budget. We provide free estimates and you only pay when you're happy. It's no surprise we've received the Angie's List Super Service Award six years in a row! Established in 2009. ACP was created to deliver exceptional service with the highest quality of craftsmanship. We guarantee you will be happy with our services in that we offer a money back guarantee. Our technicians are regarded by their peers to be some of the best in the industry. Our service experts are continuously trained. There isn't a plumbing or hvac problem we can't solve. We have the experience, knowledge and focus to solve any problem you may have. Give us a call today and let us earn your confidence.
"Michael arrived to fix our main water line after it ruptured. He was able to quickly replace the main riser and also had time to take care of a couple other repairs around the house that needed attention. Great service."
Damian C on March 2025
Heating and air conditioning services FAQs
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an uncertified HVAC pro could lead to poor quality work, costly future expenses, and potential code violations. A certified HVAC technician tackling your home projects protects you as a homeowner.
As you browse our pro listings, take note of the “Angi Certified” badge. Angi Certified businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.
While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.
The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.
The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.
