Top-rated heat pump installers and replacers.

Get matched with top heat pump installers and replacers in Diamond Bar, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Heat pump installers and replacers in Diamond Bar

Avatar for Air Innovations

Air Innovations

414 Sievers Ave
4.50(
1
)
Approved Pro

Air Innovations

414 Sievers Ave
4.50(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Our AC broke down during the hottest week of the year. We decided to replace it proactively as it was old. Tony and his crew took care of everything next day. Highly recommend."

Tim K on September 2022

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Our AC broke down during the hottest week of the year. We decided to replace it proactively as it was old. Tony and his crew took care of everything next day. Highly recommend."

Tim K on September 2022


Avatar for All Plumbing & Air Solutions

All Plumbing & Air Solutions

PO Box 7119
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

All Plumbing & Air Solutions

PO Box 7119
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2 years of experience
Free onsite estimate

All Plumbing Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

All Plumbing Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.


Avatar for HD MECHANICAL INC

HD MECHANICAL INC

7445 Mohawk Circle
5.00(
20
)
Approved Pro

HD MECHANICAL INC

7445 Mohawk Circle
5.00(
20
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
283 local quotes requested

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.

"Great! The problem was solved quickly, and the A/C is working well again."

Eleonore G on July 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.

"Great! The problem was solved quickly, and the A/C is working well again."

Eleonore G on July 2025


Avatar for Air-Tech Air Conditioning & Heating Inc

Air-Tech Air Conditioning & Heating Inc

204 S. Rosemead Blvd.
4.83(
173
)
Approved Pro

Air-Tech Air Conditioning & Heating Inc

204 S. Rosemead Blvd.
4.83(
173
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
137 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 was great. I would HIGHLY recommend. I initially had 2 other companies besides Air Tech come out for a replacement estimate. Price wise Air Tech was right in the middle but were doing a lot more than the other 2 quotes I got. For example they were changing the copper refrigeration lines, which the other 2 weren’t going to do. When I called the other 2 companies to add the lines in there was going to be an additional $1500-$2000 charge. I’m very pleased with this the work that was done by Air Tech"

Deanna M on January 2024

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 was great. I would HIGHLY recommend. I initially had 2 other companies besides Air Tech come out for a replacement estimate. Price wise Air Tech was right in the middle but were doing a lot more than the other 2 quotes I got. For example they were changing the copper refrigeration lines, which the other 2 weren’t going to do. When I called the other 2 companies to add the lines in there was going to be an additional $1500-$2000 charge. I’m very pleased with this the work that was done by Air Tech"

Deanna M on January 2024


Avatar for RT Olson Plumbing, Heating and Air Conditioning

RT Olson Plumbing, Heating and Air Conditioning

9064 Pulsar Ct
4.71(
38
)
Approved Pro

RT Olson Plumbing, Heating and Air Conditioning

9064 Pulsar Ct
4.71(
38
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
66 local quotes requested

RT Olson Plumbing, Heating and Air Conditioning, is a licensed Plumbing and HVAC company serving Orange and Riverside Counties. We are located in Corona and Anaheim Ca. We provide all residential plumbing and HVAC services including water Free leak detection, leak repair, hot water heater replacement, tankless water heaters. Air Conditioning repairs, Furnace repairs and much more. Customer satisfaction is guaranteed. Family Owned and operated with over 500+ five-star reviews!

"Right on time. Great customer service"

Amanda H on May 2023

RT Olson Plumbing, Heating and Air Conditioning, is a licensed Plumbing and HVAC company serving Orange and Riverside Counties. We are located in Corona and Anaheim Ca. We provide all residential plumbing and HVAC services including water Free leak detection, leak repair, hot water heater replacement, tankless water heaters. Air Conditioning repairs, Furnace repairs and much more. Customer satisfaction is guaranteed. Family Owned and operated with over 500+ five-star reviews!

"Right on time. Great customer service"

Amanda H on May 2023


Avatar for True Home Heating and Air Conditioning

True Home Heating and Air Conditioning

4 Faraday
4.93(
30
)
Approved Pro

True Home Heating and Air Conditioning

4 Faraday
4.93(
30
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

True Home Heating and Air Conditioning is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!

"Very prompt service to a very urgent need. The professional that responded to our office was outstanding in every way."

VICTOR L on November 2023

True Home Heating and Air Conditioning is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!

"Very prompt service to a very urgent need. The professional that responded to our office was outstanding in every way."

VICTOR L on November 2023


Avatar for SO CAL BOYS HEATING & AIR INC

SO CAL BOYS HEATING & AIR INC

13397 Harlow Ave
4.96(
47
)
Approved Pro

SO CAL BOYS HEATING & AIR INC

13397 Harlow Ave
4.96(
47
)
Approved Pro
Customers say: True professional
73 local quotes requested
3 years of experience

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 General Contractor 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!

"fantastic job. Professional. Provided advise on what needs be done in the future."

Sean O on October 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 General Contractor 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!

"fantastic job. Professional. Provided advise on what needs be done in the future."

Sean O on October 2025


Avatar for Top Energy Solutions, Inc.

Top Energy Solutions, Inc.

8265 W Sunset Blvd. Ste 201
4.85(
23
)
Approved Pro

Top Energy Solutions, Inc.

8265 W Sunset Blvd. Ste 201
4.85(
23
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
6 years of experience

When it comes to home upgrades, Top Energy Solutions is the market leader. We are a client-focused company that works hard to deliver the best possible results in all of our projects. We understand the importance of trusting a company to deliver your dream, so we strive to meet all of our customers’ expectations and make their dreams come true. We know your house is valuable, and we treat it like it was our own. Enjoy the benefits of lower costs, wide network, access to the best systems on the market, along with the comfort of a client-driven business that is still family-owned and operated. Our company is here to look after you. We will do our very best to fulfill all your HVAC, Insulation, Roofing, Windows, and Solar needs.

"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."

Terri T on September 2024

When it comes to home upgrades, Top Energy Solutions is the market leader. We are a client-focused company that works hard to deliver the best possible results in all of our projects. We understand the importance of trusting a company to deliver your dream, so we strive to meet all of our customers’ expectations and make their dreams come true. We know your house is valuable, and we treat it like it was our own. Enjoy the benefits of lower costs, wide network, access to the best systems on the market, along with the comfort of a client-driven business that is still family-owned and operated. Our company is here to look after you. We will do our very best to fulfill all your HVAC, Insulation, Roofing, Windows, and Solar needs.

"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."

Terri T on September 2024


Avatar for Efficient Incorporated

Efficient Incorporated

101 North Citrus Avenue
5.00(
2
)
Approved Pro

Efficient Incorporated

101 North Citrus Avenue
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
598 local quotes requested

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 Harmony Electrical, Plumbing and Air

Harmony Electrical, Plumbing and Air

11121 First Ave
5.00(
13
)
Approved Pro

Harmony Electrical, Plumbing and Air

11121 First Ave
5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3899 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!

"Very good company, great service and always on top of everything would highly recommend to anyone!!"

Lauren D on October 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!

"Very good company, great service and always on top of everything would highly recommend to anyone!!"

Lauren D on October 2025

...
Showing 1-10 of 999

The Diamond Bar, CA homeowners’ guide to heat pump installations and replacements

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

  • Solar panel on the roof of a home

    HomeAdvisor's Solar Panel Price Guide gives the average home solar system and panel prices. Explore solar panel pricing per watt or square foot.

  • solar panels on roof in suburban neighborhood

    HomeAdvisor’s Virginia solar panel cost guide digs into the average cost of solar panels in Virginia and cost factors around the state. Find prices and pros for your solar project.

  • Solar panel system on single roof

    HomeAdvisor’s Solar Panel Cost Guide for Pennsylvania covers project costs in Philadelphia and Pittsburgh. Use this guide to find solar panel costs for PA.

  • A house with installed solar panels on the roof

    HomeAdvisor's guide to the cost of solar panels in Texas explores solar panel cost by type and location. Find out how much you'll pay to install solar panels on your Texas property.

  • Solar panels on shingle roof of Florida house

    HomeAdvisor's Guide to the Cost of Solar Panels in Florida explores solar panel costs by type and location. Find out how much you'll pay to install solar panels on your Florida property.

  • Solar panels on a flat roof of a mediterranean house

    HomeAdvisor’s Solar Panel Cost Guide looks at the average cost of solar panels in Arizona. Find out how much solar panels cost in your city.