That’s What All In One Offers
Discover why so many people have trusted their heating and cooling to us.

That’s What All In One Offers
Discover why so many people have trusted their heating and cooling to us.

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Why ALL IN ONE is the right call?

At All In One, we understand how important it is to have a reliable and cost-effective HVAC/R systems service company that keeps your equipment at peak performance and your home or business comfortable.

Commercial Refrigeration Repair

We service all major brands & models of commercial refrigeration: Walk-In Coolers, Freezers, Beer Coolers, Reach-In Coolers, Deli Cases, Prep Table Coolers & Many More! Count on our highly-skilled, experienced technicians to have your commercial refrigeration unit fixed ASAP.

Air Conditioning Repair

Our A/C Repair comes with our commitment to fix it right the first time. We are trained and licensed to service and repair all A/C brands. You will receive 5 Star Service. Have an A/C problem? Not sure what it is? We’ll come evaluate & repair your system.

Maintenance Service

Save money and hassles by getting regular preventative maintenance of your heat and air unit. A bi-yearly tune-up of your HVAC unit will prolong the life of your system and prevent sudden emergencies from striking when you least expect them.

Emergency Service

We offer emergency service for those unexpected and crucial times your walk-in cooler, freezer, or any other commercial refrigeration unit goes down and is in need of repair ASAP.

Friendly Staff 

A member of our courteous and professional staff is available seven days a week to speak with you about your HVAC or refrigeration needs. Our East Tennessee clients have left us five-star reviews on Google and Facebook. We strive for reliable service.


Reliable HVAC Service

We know how important your HVAC unit is. Our maintenance team goes to great lengths to make sure it’s running smooth. We deliver reliable service your unit deserves for your peace of mind.

24 Hour Emergency Service
Call (423) 256-2766

24 Hour Emergency Service

A Little More About All In One Refrigeration

Over the past three decades, we have grown substantially and have developed into a full service HVAC/R company. It is our goal to be your single-source for any and all HVAC/R needs for the life of your residential and commercial heating, air conditioning, and refrigeration equipment. From the initial installation of any piece of equipment, our objective is to provide a system that is comfortable for the occupants, reasonably priced, efficient to operate, and easy to maintain/operate. Over the years, we have developed and refined our internal systems in order to provide our customers with the best service possible.

All In One provides services in a multitude of market sectors to a wide variety of clients, small and large. When it comes to its experience, All In One has a diverse resume. We have developed, designed, constructed, and serviced HVAC systems throughout the commercial, industrial, and residential marketplaces. To be successful, it takes a dedicated staff of professionals that perform at a high level of customer service and have the expertise to design and build various types of systems.

The best way to help avoid costly repair bills and get more life out of your air conditioning system is to have regular maintenance. Forget about scheduling when you sign up for our Premium Protection plan.

& Insured

Serving Greater
Tri-Cities Region


Trust your heating and air conditioning systems to All in One!
All In One Refrigeration Services is a full-service heating, cooling, and refrigeration company located in the Tri Cities region of Northeast Tennessee. We specialize in Geothermal heating and cooling products for both residential and commercial needs.

For routine HVAC system maintenance, installation of new energy-saving heating, ventilation, and central air conditioning systems, or repair service to all brands, an expert HVAC contractor is only a phone call away.

We are a York, American Standard, and Fujitsu Mini-Split Heating and Air certified contractor with 25 years of experience, however, we are capable of servicing most brands of heating and air conditioning systems.

Regular maintenance on your heating and air conditioning units can improve air quality significantly in your home. Too much or too little humidity and airborne particles like dust and pet dander and even molds can contribute to the poor air quality in your home. Having a newer, more efficient complete HVAC system installed in your home will filter these particles out of the air, improving the quality of air that you and your family breathe. Regular maintenance on these units will keep your filters clean and the air you are breathing clean and free of unwanted particles. Not to mention having a complete HVAC unit installed in your home will save you significantly in heating and cooling costs. Regular maintenance will keep your unit running as efficiently as possible and if you ever need a repair you already know who to call for any HVAC servicing needs. We provide complete preventative maintenance packages to lengthen the life of any HVAC system. All In One is here for all of your HVAC installation, servicing, and repair needs.

It is important as a homeowner to make smart decisions when it comes to your HVAC. in typical homes, more than half of your energy goes to heating and cooling your home. Replacing older HVAC systems with newer, more efficient ones can save you tremendously on your energy costs. There are many other benefits to installing newer, more efficient HVAC units in your home.

NATE Certified Technicians

All In One Refrigeration Services
the Greater Tri-Cities Area


We provide service and repair on all major commercial refrigeration appliance units – Walk-In Coolers, Freezers, Beer Coolers, Reach-In Coolers, Deli Cases, Prep Table Coolers & Many More!


Whether you need a HVAC system install, maintained, or repaired, we offer affordable pricing and expert knowledge. We’re committed to providing you with the highest level of service.

Emergency Service

 If your restaurant walk-in cooler that has gone down or your heating and or cooling system is not working, we are available 24 hours a day for emergency situations.