Recent Blog Posts

Mini-split AC above text: “Why a Mini-Split?” and “Efficient Comfort.”

Mini-Splits: What Are They & When Are They a Good Option?

September 15, 2026
If you have a room that's always too hot or cold, an addition without ductwork, or a space that needs its own temperature control, a mini-split system could be a great solution.
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How to Get Up to $8,000 Off a New HVAC System in Arizona

May 6, 2026
BIG NEWS! Arizona homeowners may qualify for major upfront savings through the Efficiency Arizona Rebate Program — including up to $8,000 off qualifying HVAC systems and Mid-State Refrigeration is an Approved Contractor.
HVAC & Refrigeration Solutions
Casa Grande, AZ

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Parts and Labor Warranties Available

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Arizona's Trusted HVAC & Refrigeration Experts

Total Comfort. Year-Round.

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Explore Our Services

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Trusted HVAC Services for Arizona Homes and Businesses Since 1978
Trusted HVAC Services for Arizona Homes and Businesses Since 1978

When your heating or cooling system stops working properly, you need a team that responds quickly and fixes it right the first time. Mid-State Refrigeration has been serving Pinal and Southern Maricopa Counties with dependable HVAC solutions since 1978. As a family and woman-owned business, we understand how important it is to keep your home or business comfortable all year long.


Our NATE-certified technicians are factory authorized dealers for Bryant and Carrier, bringing you quality equipment and skilled installations. We're licensed, bonded, and insured, and we offer same-day emergency service when you need it most. Plus, we provide military and senior citizen discounts along with warranty on parts and labor. Contact us today to discuss your heating and cooling needs.

Mid-State Refrigeration Inc

Why Choose Us

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Same-Day Emergency Service

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Parts and Labor Warranties Available

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10% Military & Senior Discounts

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NATE-Certified Technicians

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Same-Day Estimates

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Licensed, Bonded, and Insured

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Residential HVAC Services

Your home should be comfortable in every season. We deliver installation, replacement, maintenance checks, and reliable service to keep your residential heating and cooling systems running smoothly across Pinal and Southern Maricopa Counties.

Commercial Services

Your business needs climate control that keeps operations running smoothly. We provide comprehensive HVAC solutions built for commercial spaces throughout Pinal and Southern Maricopa Counties. Our systems keep your employees and customers comfortable while helping you save on energy costs.

Installation and Specialty

Your HVAC system needs the right equipment, proper installation, and well-designed components to perform reliably. We provide professional HVAC product installation and ductwork services for homes and businesses, along with custom sheet metal fabrication. From installing HVAC equipment to creating tailored ductwork and specialty components, we deliver solutions designed to meet your project needs and support consistent airflow throughout your space.

Service and Maintenance

Your HVAC system needs dependable care to stay ready year-round. We provide HVAC repair, routine maintenance, and emergency service for homes and businesses, helping address system issues, maintain reliable operation, and keep your indoor environment comfortable.

Emergency Service

HVAC emergencies happen at the worst possible times, and we're ready when they do. Our team offers same-day emergency service to get your system back up and running fast, so you can get back to your normal routine.

Maintenance Plans

Keep your system running smoothly year-round with a maintenance plan tailored to your needs. We offer residential and commercial plans that include scheduled maintenance visits, repair discounts, and priority service to help protect your investment and maintain comfort.

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Here's what our satisfied customers are saying...

At Mid-State Refrigeration, we take pride in providing exceptional heating and air services to our customers.We would be grateful if you could share your thoughts about our company with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Mid-State Refrigeration and let others know what you think.

Best HVAC Contractor in Casa Grande 2025


- Business Rate

Carrier & Bryant Dealer

Quality Workmanship & 10-Year Warranty

Family Owned & Operated


Since 1978

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Best HVAC Contractor in Casa Grande 2025

— Business Rate

Proud Dealer of

Carrier logo in white italic text on a blue oval background
Bryant Heating & Cooling Systems logo in red and white with black text
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Quality Workmanship & 10-Year Warranty

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Family Owned & Operated

Since 1978

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Best HVAC Contractor in Casa Grande 2025

— Business Rate

Carrier logo in white italic text on a blue oval background
Bryant Heating & Cooling Systems logo with red oval and “Factory Authorized Dealer” text

Proud Dealer of

Shield icon with a checkmark, black outline on a white background

Quality Workmanship & 10-Year Warranty

Three outlined people icons, representing a group or team

Family Owned & Operated

Since 1978

Black outlined five-point star icon on a white background

Best HVAC Contractor in Casa Grande 2025

— Business Rate

Carrier logo in white italic text on a blue oval background
Bryant Heating & Cooling Systems logo in red and white with black text

Proud Dealer of

Shield icon with a checkmark

Quality Workmanship & 10-Year Warranty

Outline icon of three people with one central figure

Family Owned & Operated

Since 1978

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Describe some quality or feature of the company. Write a short paragraph about it and choose an appropriate icon.

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