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TRUSTED BY DIAMOND, MO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon46
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Diamond, MO

*The Angi rating for Heating And Air Conditioning Service companies in Diamond, MO 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, MO 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 November 13, 2025

Find Heating and air conditioning pros in Diamond

Avatar for JAG Electric

JAG Electric

4.93(
45
)
•Approved Pro

JAG Electric

4.93(
45
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I’ve used them multiple times. Fair prices and quality work. They actually clean up after themselves and respect your property. They are good with dogs also!"

Micah F on March 2022

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I’ve used them multiple times. Fair prices and quality work. They actually clean up after themselves and respect your property. They are good with dogs also!"

Micah F on March 2022

Ozark Air Master

5.00(
3
)
•Approved Pro

Ozark Air Master

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

Ozark Air Master 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!

"Of course the air went out after 5:00 on Friday evening, sent a message to Ozark Air Master, received a call within 5 minutes, a technician came out within 30 minutes and addressed the problem and repaired. Thank you Seth! They will be my go to from now on! 5 stars for this company! Regina McMillan "

Regina M on September 2025

Ozark Air Master 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!

"Of course the air went out after 5:00 on Friday evening, sent a message to Ozark Air Master, received a call within 5 minutes, a technician came out within 30 minutes and addressed the problem and repaired. Thank you Seth! They will be my go to from now on! 5 stars for this company! Regina McMillan "

Regina M on September 2025

Sundown Plumbing and Handyman

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Sundown Plumbing and Handyman

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Sundown Plumbing and Handyman is a small family owned business with over 10 years of experience in the construction field. We can handle all of your small business or residential needs. Specialties include: drywall installation and repairs, painting, plumbing, parking lot painting, furniture building, light installation, door repairs, and more!

Sundown Plumbing and Handyman is a small family owned business with over 10 years of experience in the construction field. We can handle all of your small business or residential needs. Specialties include: drywall installation and repairs, painting, plumbing, parking lot painting, furniture building, light installation, door repairs, and more!

Elite Mechanical and Construction LLC

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Elite Mechanical and Construction LLC

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Emergency services offered

Service & Maintenance on all HVAC/R Residential/Commercial/Industrial applications! New Construction & Remodel - Complete Install of Any equipment to meet your needs! - Retrofit, dated equipment with the new modern efficiency rated equipment! Technologically Advanced - We have an extensive background in the upcoming technologies that will become standard in our industry and for you as the consumer! 20 Combined Years of Knowledge! - We have wide array of experience ranging from Servicing/Installing Residential Homes to Large Supermarkets! - We are ASHRAE & NATE Certified, along with BBB Certified! We appreciate your consideration to service your needs!

Service & Maintenance on all HVAC/R Residential/Commercial/Industrial applications! New Construction & Remodel - Complete Install of Any equipment to meet your needs! - Retrofit, dated equipment with the new modern efficiency rated equipment! Technologically Advanced - We have an extensive background in the upcoming technologies that will become standard in our industry and for you as the consumer! 20 Combined Years of Knowledge! - We have wide array of experience ranging from Servicing/Installing Residential Homes to Large Supermarkets! - We are ASHRAE & NATE Certified, along with BBB Certified! We appreciate your consideration to service your needs!

Neely mechanical inc

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Neely mechanical inc

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Free onsite estimate

With a staff young enough to do but old enough to know , Neely Mechanical brings together the best of youthful enthusiasm with knowledge gained only by age and experience, combined with the best prices in the 4 states, Neely Mechanical is your best choice for your HVAC needs

With a staff young enough to do but old enough to know , Neely Mechanical brings together the best of youthful enthusiasm with knowledge gained only by age and experience, combined with the best prices in the 4 states, Neely Mechanical is your best choice for your HVAC needs

Heating and Air Co.

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Heating and Air Co.

No reviews yet

Residential HVAC Service. Enjoy rock bottom pricing with this first year company. Apartment complexes that have individual HVAC units applicable. Service call - $40 Labor rate - $60/hr Preventative Maintenance - $60/system

Residential HVAC Service. Enjoy rock bottom pricing with this first year company. Apartment complexes that have individual HVAC units applicable. Service call - $40 Labor rate - $60/hr Preventative Maintenance - $60/system

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Heating and Air Conditioning questions, answered by experts

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

You should know the main components of an air conditioner: the condenser coils, evaporator coils, drip pan, AC filter, ducts, and refrigerant. Each part plays a key role in the performance and safety of your AC system. When tracking the source of AC issues or odors, it helps to know where to look. Your outdoor unit houses your condenser coils, fan, and compressor. Your indoor unit houses your evaporator coils, drain lines, and filter, and it connects to your ductwork. 

A dirty AC filter can lower the efficiency of your system, so depending on how dirty it was, you may notice a temperature difference when you clean your filter. You can try other solutions if your AC isn’t blowing as cold as it used to. You can call in a local HVAC tech to make sure everything is running correctly, fix your air seal if it’s a window unit, and clean your coils.

The Diamond, MO homeowners’ guide to heating and air conditioning services

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

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