Top 10 HVAC Companies in Diamond Bar, CA

Porch Pro Headshot GC Heating & Cooling Inc.
HVAC Contractors
Serves Diamond Bar, California
"We were pleasantly surprised at the job these guy did removing our old 40 year old air conditioner and replacing it with our new one.They were efficient, quick and sensitive to our comfort while doing the work. The price was outstanding and our new air conditioner is a dream come true.We couldn't ...Read more about GC Heating & Cooling Inc.
"We were pleasantly surprised at the job these guy did removing our old 40 year old air conditioner and replacing it with our new one.They were efficient, quick and sensitive to our comfort while doing the work. The price was outstanding and our new air conditioner is a dream come true.We couldn't ...Read more about GC Heating & Cooling Inc.
Porch Pro Headshot Fix It Home Services
HVAC Contractors
Serves Diamond Bar, California
"I called Fix It! to look at my A/C. The technician Mike showed up. Mike was professional, onetime, and neatly dressed. Mike explained everything he was doing, which I really appreciated. Mike was the epitome of customer service. "
100% response rate
"I called Fix It! to look at my A/C. The technician Mike showed up. Mike was professional, onetime, and neatly dressed. Mike explained everything he was doing, which I really appreciated. Mike was the epitome of customer service. "
Porch Pro Headshot Magnolia Heating and Cooling
HVAC Contractors
Serves Diamond Bar, California
(1,723)
We are a family owned and operated business serving the Inland Empire area since 1951. Big enough to offer competitive pricing and services, small enough to put customer satisfaction as our No. 1 priority. NO FALSE PROMISES. We're just a neighborhood business asking for the opportunity to show the...Read more about Magnolia Heating and Cooling
We are a family owned and operated business serving the Inland Empire area since 1951. Big enough to offer competitive pricing and services, small enough to put customer satisfaction as our No. 1 priority. NO FALSE PROMISES. We're just a neighborhood business asking for the opportunity to show the...Read more about Magnolia Heating and Cooling
Porch Pro Headshot Home Comfort USA
HVAC Contractors
Serves Diamond Bar, California
(1,052)
"Called a few other AC guys and they're booked out two weeks! I researched a lot and found people in the AC business respect Home Comfort USA. I decided to give them a try-and I'm so glad we did! Their dispatch team went out of their way to squeeze me in... Believe me our not, they came out the nex...Read more about Home Comfort USA
"Called a few other AC guys and they're booked out two weeks! I researched a lot and found people in the AC business respect Home Comfort USA. I decided to give them a try-and I'm so glad we did! Their dispatch team went out of their way to squeeze me in... Believe me our not, they came out the nex...Read more about Home Comfort USA
Porch Pro Headshot The Right Choice
HVAC Contractors
Serves Diamond Bar, California
(681)
The Right Choice Heating and Air has provided services to homeowners, landlords, and business owners for many years. Our company is devoted to all matters related to heating, ventilation, and air conditioning. We provide thorough and professional assistance to ensure that all of our clients are sati...Read more about The Right Choice
The Right Choice Heating and Air has provided services to homeowners, landlords, and business owners for many years. Our company is devoted to all matters related to heating, ventilation, and air conditioning. We provide thorough and professional assistance to ensure that all of our clients are sati...Read more about The Right Choice
Porch Pro Headshot NUFLO DRYER VENT CLEANING
HVAC Contractors
Serves Diamond Bar, California
(442)
Dryer Vent Specialists Licensed, Bonded, Insured. Cleanings, Installations, Repairs, Parts & Supplies. Please call us today for your free quote! 714-231-4326
Dryer Vent Specialists Licensed, Bonded, Insured. Cleanings, Installations, Repairs, Parts & Supplies. Please call us today for your free quote! 714-231-4326
Porch Pro Headshot Smart Choice Heating and Air
HVAC Contractors
Serves Diamond Bar, California
(197)
Smart Choice Heating and Air has over 11 years of experience and we've been lucky enough to learn a thing or two over those years. We work hard to assure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal! Our tea...Read more about Smart Choice Heating and Air
Smart Choice Heating and Air has over 11 years of experience and we've been lucky enough to learn a thing or two over those years. We work hard to assure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal! Our tea...Read more about Smart Choice Heating and Air
Porch Pro Headshot BUILD A DREAM INC
HVAC Contractors
Serves Diamond Bar, California
(113)
"the first three people that came were very respectable and nice, the work was very good and neat, they cleaned up very good after they finished. the roof was 30 years old and it was pealing off, i'm very pleased with my new roof, we installed an energy efficient roof, and we can feel the difference...Read more about BUILD A DREAM INC
"the first three people that came were very respectable and nice, the work was very good and neat, they cleaned up very good after they finished. the roof was 30 years old and it was pealing off, i'm very pleased with my new roof, we installed an energy efficient roof, and we can feel the difference...Read more about BUILD A DREAM INC
Porch Pro Headshot Select Home Improvements
HVAC Contractors
Serves Diamond Bar, California
(125)
At Select Home Improvements we specialize in Windows, Textcote/Supercote Coolwall, HVAC, Roofing, Patio Covers, Vinyl Siding & Insulation. We are licensed, insured and bonded. We are also members of The League of California Home Owners. With our unmatched customer service we remedy all of our se...Read more about Select Home Improvements
At Select Home Improvements we specialize in Windows, Textcote/Supercote Coolwall, HVAC, Roofing, Patio Covers, Vinyl Siding & Insulation. We are licensed, insured and bonded. We are also members of The League of California Home Owners. With our unmatched customer service we remedy all of our se...Read more about Select Home Improvements
Porch Pro Headshot CWP Heating & Air, Inc.
HVAC Contractors
Serves Diamond Bar, California
(159)
C.W.P. Heating and Air's number one goal is to supply local residents and businesses with the highest quality HVAC service available. Whether it be a simple furnace repair, or a large A/C installation, our staff and technicians are trained to meet and exceed your expectations. Because we value custo...Read more about CWP Heating & Air, Inc.
C.W.P. Heating and Air's number one goal is to supply local residents and businesses with the highest quality HVAC service available. Whether it be a simple furnace repair, or a large A/C installation, our staff and technicians are trained to meet and exceed your expectations. Because we value custo...Read more about CWP Heating & Air, Inc.

Top questions to ask before hiring an hvac company

What type of insurance do you have? Heating, ventilation and air conditioning (HVAC) professionals work on a variety of mechanical areas of the home. You'll want to ask specific questions regarding professional training and licensing, as well as what types of insurance they have (for example, mold, air pollution or worker's compensation). It's fair to ask for the dollar amounts they are covered and a quality professional will show you verification of coverage.

HVAC professionals attend to a home's thermal needs as well as air quality. Because of the technical aspects of HVAC work, find out the scope of work your professional can perform. You may only need your heating unit serviced however, if this professional also specializes in energy efficiency, mold assessment, or offer ways for you to save on energy costs, you may want to hire them for future projects. Because some equipment is gas-powered, your professional should be able to answer questions about installing gas lines and permitting.

Ask about guarantees on labor or warranties on parts for your HVAC project. It's common to have a time limitation on parts and equipment. Save any paperwork related to your project so you can refer back to instruction manuals or serial numbers.

When working with a heating and cooling professional, ask if their company offers pricing incentives to encourage you to hire them on a regular basis. It's common to have your equipment inspected and serviced at least once a year. Your HVAC company may also offer special pricing on filters, ventilation cleaning or energy assessments.

Regardless of the scope of your project, find out what you need to do to prepare your home for their visit. For example, the HVAC professional will need access to the areas in question and may need access to other mechanical or ventilation points. Make sure pets and children are kept out of the way. Ask if your project will involve removing dry wall or making any other structural changes – you may need to hire a professional drywall contractor to patch up HVAC work. If you are adding a unit that may contribute to carbon monoxide within the home, find out if you need to purchase a carbon monoxide detector.

Recent reviews for Diamond Bar HVAC Contractors

39881

On Thursday I requested assistance with my Water Heater. The guy came out and looked at my pilot light and said it was out. He charged me $90 to assess the situation and then said he re-lit the pilot light and all I needed to do was wait 30 minutes to a...

- Michael Carpenter
36147

They were phenomenal. Supreme came through and figured out what the problem and repaired it when 4 ither companjes couldnt do the job. And they showed up in a timely matter with a 30 min prior to show up courtesy call.i would highly recommend supreme to a...

- Bobby Garcia
22572

Chris did a great job for me. He showed up looking professional, knew what he was talking about and his work was excellent. Would recommend him to anyone!

- Mike Stickley
23674

Experience counts and when it comes to experience Chris cant be beat. Add to that the best customer service out there you just cant go wrong. Had Cool Breeze install my system new from the ground up. It has performed flawless and perfectly matched to my n...

- Robert Herkelrath
22746

I have done a lot of work with this company, they are among the best. Chris is very professional and always willing to answer any questions you may have.

- Ricky Felix
22629

I live in illinois but own a rental home in Moreno valley. Chris has handled my Ac issues for several years. I love that I have someone I trust. Especially when the repairs and work he is doing, and what I'm praying for, aren't things I can just go out a...

- Rocky Stone
22575

Chris is a true professional and extremely talented in his trade.

- Michael Guinn
31090

no job done . Job was to small for them to do . Walked in looked at it and walked out with

- Sharon White
100576

I want to thank the crew and entire team of American Home for getting my roof and patio done. Everything was to my expectations and from this experience I would recommend them to anyone doing any project. From start I was very Informed about the process, ...

- Ricardo Gonzalez
100556

Had a great experience with these guys since the beginning and always kept me in the loop throughout the project. Project went smoother than I expected and I will definitely use this company again in the future and would recommend them to friends and fami...

- Juan Gonzalez

Everything You Need to Know About Diamond Bar HVAC Companies

How do I know that I found the right HVAC Contractor in Diamond Bar for my hvac project?

Finding the right hvac contractor for your project can be stressful.... when you don't search with Porch. We've pulled together everything you need to know about HVAC in Diamond Bar so you can have some peace of mind before starting your project.

Here’s what you need to know to choose the right hvac contractor in Diamond Bar:

  • Are they properly licensed? Diamond Bar has 18 licensed HVAC Contractors Pros.
  • Are they BBB accredited? 5 pros in Diamond Bar are.
  • Check if they are they BBB rated: 20 are A-rated in Diamond Bar.
  • Is the quality worth the price? Make sure to find the hvac contractor that can deliver the quality you're looking for, without going way over your budget. Don't forget that every job is going to be different.
  • Speak with them over the phone: Contact multiple hvac contractors pros to see if you’re on the same page when it comes to your project.

Will HVAC work in Diamond Bar require permits, inspections, special licenses, etc.?

Whether you’re hvac contractor job is in Diamond Bar or any other city, you're going to want to do a bit of research before hiring hvac contractors. Even small jobs may have certain regulations around them. Often, the hvac contractor performing the work will have any required permits, inspections, etc. under control, but not always. Short answer: Research yourself and double check with the hvac folks that everything is in order.

How many hvac contractors does Diamond Bar have?

There are around 50 companies throughout Diamond Bar to help you with your next hvac job.

  • 20 of them have an A or A+ rating from Better Business Bureau.

All HVAC Companies in Diamond Bar, CA

Porch Pro Headshot California Cool Breeze
HVAC Contractors
Serves Diamond Bar, California
(55)
"I'm very please from his work.. I perches old house and I asked from Christofer to give me an estimate for a new system and he explained to me about the high energy efficiency system. We're very happy from the low electric bill and the fair price."
"I'm very please from his work.. I perches old house and I asked from Christofer to give me an estimate for a new system and he explained to me about the high energy efficiency system. We're very happy from the low electric bill and the fair price."
Porch Pro Headshot HomePro Remodeling
HVAC Contractors
Serves Diamond Bar, California
(146)
We are a full service company that does everything you could ever think of regarding home improvement. No job is too small for us! We love to see the smile on our customers face at the end of a job. When you are happy, we are happy! If you have any questions, feel free to reach out to us at any time...Read more about HomePro Remodeling
We are a full service company that does everything you could ever think of regarding home improvement. No job is too small for us! We love to see the smile on our customers face at the end of a job. When you are happy, we are happy! If you have any questions, feel free to reach out to us at any time...Read more about HomePro Remodeling
Porch Pro Headshot B and N Heating and Air
HVAC Contractors
Serves Diamond Bar, California
(11)
"Great Company!! Reliable, honest and work completed ON TIME. They show up when they say they will be there, are very respectful and clean up when they leave, We have used them for installs on our rehab properties and repairs for our rental properties. Have not had any complaints from our te...Read more about B and N Heating and Air
"Great Company!! Reliable, honest and work completed ON TIME. They show up when they say they will be there, are very respectful and clean up when they leave, We have used them for installs on our rehab properties and repairs for our rental properties. Have not had any complaints from our te...Read more about B and N Heating and Air
Porch Pro Headshot A Plus General Contractors, Inc.
HVAC Contractors
Serves Diamond Bar, California
(28)
We've grown a lot since we opened our doors 15 years ago. Today, we have 25 skilled technicians able to meet all your comfort needs - every season of the year. We've become one of the best and most reputable air conditioning companies in Southern California. And our Trane Comfort Specialist™ Dealer ...Read more about A Plus General Contractors, Inc.
We've grown a lot since we opened our doors 15 years ago. Today, we have 25 skilled technicians able to meet all your comfort needs - every season of the year. We've become one of the best and most reputable air conditioning companies in Southern California. And our Trane Comfort Specialist™ Dealer ...Read more about A Plus General Contractors, Inc.
Porch Pro Headshot 20th Century Air Inc.
HVAC Contractors
Serves Diamond Bar, California
(16)
20th Century Air, Inc. - Heating and Air Conditioning in Orange County "21st Century Products with 20th Century Service" We are a family owned and operated company specializing in heating and air conditioning installation, replacements, maintenance, and repair in Orange, LA, and Riverside Counties...Read more about 20th Century Air Inc.
20th Century Air, Inc. - Heating and Air Conditioning in Orange County "21st Century Products with 20th Century Service" We are a family owned and operated company specializing in heating and air conditioning installation, replacements, maintenance, and repair in Orange, LA, and Riverside Counties...Read more about 20th Century Air Inc.
Porch Pro Headshot ALL TEMP HEATING & COOLING
HVAC Contractors
Serves Diamond Bar, California
(10)
Over 20 years serving the Inland Empires and Palm Desert Heating and Cooling needs! One job at a time. Following the latest technologies and providing are customers Energy Efficent Systems. We've been providing 24 Hour Emergency Service to new and exisitng customers 365 days a year since 1990!
Over 20 years serving the Inland Empires and Palm Desert Heating and Cooling needs! One job at a time. Following the latest technologies and providing are customers Energy Efficent Systems. We've been providing 24 Hour Emergency Service to new and exisitng customers 365 days a year since 1990!
Porch Pro Headshot M L Plumbing Heating & Air
HVAC Contractors
Serves Diamond Bar, California
(5)
"Mike was great, he quoted me on a tub installation, it quickly became a broken drain problem. He did all the work,all the while staying close to his original quote, he is a true professional. He did a great job!! Thanks Mike.."
"Mike was great, he quoted me on a tub installation, it quickly became a broken drain problem. He did all the work,all the while staying close to his original quote, he is a true professional. He did a great job!! Thanks Mike.."
Porch Pro Headshot American Home
HVAC Contractors
Serves Diamond Bar, California
(15)
"Just wanted to give this company a great review for the amazing work they performed at my home. My husband and I didn't have much faith in the site but once we got over the scary part Edgar made sure that everything went according to plan. We did have a minor delay with the permits but it was handl...Read more about American Home
"Just wanted to give this company a great review for the amazing work they performed at my home. My husband and I didn't have much faith in the site but once we got over the scary part Edgar made sure that everything went according to plan. We did have a minor delay with the permits but it was handl...Read more about American Home
Porch Pro Headshot Affordable Plumbing & Drain Cleaning
HVAC Contractors
Serves Diamond Bar, California
(3)
Affordable Plumbing, located in Rancho Cucamonga, is a bonded and insured plumbing company. For 33 years, they have been offering water testing, plumbing inspection, garbage disposal installation and other services. Affordable Plumbing is licensed by the state of California. They are also accredited...Read more about Affordable Plumbing & Drain Cleaning
Affordable Plumbing, located in Rancho Cucamonga, is a bonded and insured plumbing company. For 33 years, they have been offering water testing, plumbing inspection, garbage disposal installation and other services. Affordable Plumbing is licensed by the state of California. They are also accredited...Read more about Affordable Plumbing & Drain Cleaning
Porch Pro Headshot Global Green Solutions and Remodeling
HVAC Contractors
Serves Diamond Bar, California
(9)
"In our house we have noticed that certain rooms were a lot colder than others and that we had a high heating bill- $250.00 a month during cold months. I was also aware that some ducts in the attic were partially crushed. So when Global Green Solutions called to clean out the vents and inspect the...Read more about Global Green Solutions and Remodeling
"In our house we have noticed that certain rooms were a lot colder than others and that we had a high heating bill- $250.00 a month during cold months. I was also aware that some ducts in the attic were partially crushed. So when Global Green Solutions called to clean out the vents and inspect the...Read more about Global Green Solutions and Remodeling
Porch Pro Headshot Supreme Cooling Heating and Air Conditioning
HVAC Contractors
Serves Diamond Bar, California
(4)
Supreme Cooling Heating and Air Conditioning is an HVAC specialist that provides gas leak detection, air conditioning installation, and water heater services as well as other services. They are located in Moreno Valley. The state of California has licensed Supreme Cooling Heating and Air Conditionin...Read more about Supreme Cooling Heating and Air Conditioning
Supreme Cooling Heating and Air Conditioning is an HVAC specialist that provides gas leak detection, air conditioning installation, and water heater services as well as other services. They are located in Moreno Valley. The state of California has licensed Supreme Cooling Heating and Air Conditionin...Read more about Supreme Cooling Heating and Air Conditioning
Porch Pro Headshot Air Duct Professionals
HVAC Contractors
Serves Diamond Bar, California
Air Duct Professionals is committed to the safety of our customers and is taking every pre-caution to provide safe service to our customers during the Covid-19 pandemic as recommended by the CDC: * Our techs wear protective masks and gloves and wash/sanitize their hands often. * Our techs do not co...Read more about Air Duct Professionals
Air Duct Professionals is committed to the safety of our customers and is taking every pre-caution to provide safe service to our customers during the Covid-19 pandemic as recommended by the CDC: * Our techs wear protective masks and gloves and wash/sanitize their hands often. * Our techs do not co...Read more about Air Duct Professionals
Porch Pro Headshot Ramco Plumbing, Heating & Air
HVAC Contractors
Serves Diamond Bar, California
When a plumbing problem arises, don’t sweat it – you only need to pick up the phone and call Ramco Plumbing! Offering fast, friendly, five-star plumbing services plus water damage restoration services, Ramco Plumbing is the team you will want on your side. Their plumbers are dedicated to getting eve...Read more about Ramco Plumbing, Heating & Air
When a plumbing problem arises, don’t sweat it – you only need to pick up the phone and call Ramco Plumbing! Offering fast, friendly, five-star plumbing services plus water damage restoration services, Ramco Plumbing is the team you will want on your side. Their plumbers are dedicated to getting eve...Read more about Ramco Plumbing, Heating & Air
Porch Pro Headshot Xpress Heating & Air
HVAC Contractors
Serves Diamond Bar, California
We pride our company on reliability, great communication, integrity and quality work. We are experts in our HVAC work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.
We pride our company on reliability, great communication, integrity and quality work. We are experts in our HVAC work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.

Latest projects near Diamond Bar

Recent projects booked on Porch
Pomona 91766
Thermostat Replacement and Repair
Comments from Customer
just reolace
Chino Hills 91709
HVAC Inspection
Start Date
Within 48 hours
Purpose
Purchasing property
Inspection type
Heating and cooling
Property type
Single family residence
Property size
2,001-2,500 sq ft
Property age
21-30 years
Foundation type
Slab on ground
Relationship to property
Agent
Occupied
No
Utilities turned on
Yes
Specific services
None of the above