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TRUSTED BY DIAMOND, MO HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon10
    Verified heating oil services reviews

Verified Reviews for Heating Oil Service pros in Diamond, MO

*The Angi rating for Heating Oil 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 Oil Service needs.

*The HomeAdvisor rating for Heating Oil 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 Oil Service needs.

Last update on December 05, 2025

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Ozark Air Master

5.00(
3
)
•Approved Pro

Ozark Air Master

5.00(
3
)
•Approved Pro
Super Service Award
Customers say: Quick response
32 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

Avatar for A-Z Air & Refrigeration Llc

A-Z Air & Refrigeration Llc

No reviews yet

A-Z Air & Refrigeration Llc

No reviews yet
11 years of experience

A-Z Air & Refrigeration llc is a veteran owned small business currently applying for service connected status with vetbiz.gov . We are a member owned company launched in 2014 and listed on the BBB of southwest MO. Our CEO is a service connected veteran who served with honor in Operation Enduring Freedom . Our highly skilled and trained team holds multiple licenses including EPA, NCCER , AS Degrees with accredited HVACR schools and many more. We are licensed and Bonded with up to date Letters of good standing with the state of MO and recently launched operations in KS . We service, repair, replace, upgrade and diagnose almost all brands of HVACR for residential and light commercial applications. This includes Boilers, Chillers, and Hydronic systems. We currently have active accounts with many commercial companies. A-Z Air & Refrigeration llc was launched as a veteran service company offering many veteran discounts and billing options. We will extend our coverage areas to meet any veteran needs per our industry. All non veterans continue to receive top quality work at competitive pricing and standard service contract rates. Whether you did or did not serve our country we are the team you want, If you did serve our country we are the team you need.

A-Z Air & Refrigeration llc is a veteran owned small business currently applying for service connected status with vetbiz.gov . We are a member owned company launched in 2014 and listed on the BBB of southwest MO. Our CEO is a service connected veteran who served with honor in Operation Enduring Freedom . Our highly skilled and trained team holds multiple licenses including EPA, NCCER , AS Degrees with accredited HVACR schools and many more. We are licensed and Bonded with up to date Letters of good standing with the state of MO and recently launched operations in KS . We service, repair, replace, upgrade and diagnose almost all brands of HVACR for residential and light commercial applications. This includes Boilers, Chillers, and Hydronic systems. We currently have active accounts with many commercial companies. A-Z Air & Refrigeration llc was launched as a veteran service company offering many veteran discounts and billing options. We will extend our coverage areas to meet any veteran needs per our industry. All non veterans continue to receive top quality work at competitive pricing and standard service contract rates. Whether you did or did not serve our country we are the team you want, If you did serve our country we are the team you need.

Heating Oil questions, answered by experts

It’s a better use of energy (and your money) NOT to run an ERV system all the time. Most experts recommend that you cycle your ERV system on and off throughout the year. However, the recommended advice could change based on your climate, the number of people in your home, the size and style of your home, and your heating and cooling system. Contact a local pro for more specific advice.

Leaks, poor airflow, reduced efficiency, and loop blockages are common problems requiring service.

Yes, geothermal heat pumps are worth the money. You can save about 70% on heating costs in the winter and around 50% on cooling costs in the summer with a geothermal heat pump compared to a traditional HVAC system. Over time, your savings on monthly utilities will pay for the cost of the geothermal heat pump installation. If you have an incredibly small yard, however, you may not have enough space for this type of system.

If a geothermal heat pump is installed correctly, then you shouldn’t have to worry about having a backup heat source such as a furnace or oil boiler. However, there are geothermal systems installed that include a backup in case the heat pump fails due to extreme cold. This is simply a backup heat pump you’ll likely never need and not an alternative heat source.

An evaporator or swamp cooler is a common alternative for small spaces. These coolers blow moist air into a space to help cool it down. They are more affordable than misters and use much less water. However, coolers will not have the same cooling effect as misters, cannot help plants survive the heat, and only reach a small area.

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