Residential Service


Proper preventative maintenance should be completed on all HVAC systems, at least on a yearly basis, to ensure that the system is performing efficient and to capacity.

Maintenance Contracts

R&S McKay offers Preventative Maintenance Agreements to help you get the most out of your HVAC system and ensure your home and family maintain a year round comfort level.


Repair or Replace? When is it time? If your system is past the point of repair, R&S McKay can evaluate and install the best replacement system for your needs.

The total benefits

Maximum efficiency, maintenance, repair, and adjust your equipment for better performance

Increased equipment life with scheduled visits and preventive maintenance procedures

Helps prevent costly downtime and large, unexpected repair bills

Tranquility for the whole family when the unit is at maximum efficiency

Increased comfort of your home

We are here to help.

We offer financing options for qualified customers. 

Commercial Service

New Facilities/Projects

Every facility need is unique, every new commercial HVAC system installation requires its own unique design, installation and service considerations. Our experience, combined with technical expertise, makes R&S McKay the ideal HVAC partner for your new construction or remodeling project.

Emergency Services

We believe that you should never have to run your business without properly functioning heating and cooling systems, and our service technicians are always on call to ensure that we uphold this ideal. Call us 24/7 and we’ll send a professional technician to your business to repair the problem.

Maintenance Contracts

You change the oil in your car every 3,000 to 5,000 miles. Your HVAC equipment needs the same attention to extend the life of the units and keep them running within manufacturer’s specifications. Our number 1 goal is to assist you in maintaining your equipment.

The total benefits

Maximum efficiency by maintaining, repairing, and tuning your equipment to optimum performance

Increased equipment life with scheduled visits and preventive maintenance procedures

Consistent comfort levels by understanding and calibrating your mechanical system controls

Improved  building operations by anticipating your needs and analyzing your systems

Helps avoid costly down time and large, unexpected repair bills

Provides peace of mind that your system is operating at peak efficiency

Increased productivity of employees

Service you can trust.

With and A rating from The Better Business Bureau, you can rest assured we will handle your HVAC needs with respect and professionalism.

The core of our business at R&S McKay Heating & Air Conditioning is our services. We offer the highest quality of commercial and residential heating and cooling service in the greater Atlanta area. Our technicians are the best air conditioning contractors in Atlanta, and they’re the tops at roof top AC repair.

We also offer a huge menu of services for other components and systems. For instance we’re one of the leading firms for commercial HVAC maintenance in Atlanta and the surrounding area. Air conditioner sales, furnace repairs and replacements are all part of the services we provide.

In the summer, central air conditioning service is one of the most common requests that we receive. Our hot and humid southern summers make keeping your central air conditioner in great shape is a number one priority for most home owners. Once of the best ways to do this is to schedule a yearly maintenance check and cleaning each spring before the hot temperatures hit. A consistently yearly clearing and check can prevent unexpected failures in the future. R&S McKay has created yearly Preventative Maintenance Agreements to help you keep on schedule to maintain the health of your HVAC system.

This is one of the reasons that we head the field in Lawrenceville heating and air conditioning repair. We rather see your system stay in great running shape than to have to make repairs on it. We’re also the number one company that people call for new AC installations in Lawrenceville. Our expert technicians are simply the best at what they do—installing and fine-tuning the performance of heating and air conditioning systems. We’re glad to take to take a look at your current system to determine if it can be fixed or if the system needs to be replaced completely.

Although the majority of our current customers are residential, we’re also welcoming new commercial customers. Do you have a factory, office building, processing plant or some other building that needs efficient and reasonably priced heating and cooling? If so, please give us a call. We’ll welcome your questions and we’re happy to stop by your place of business to give an estimate for installing a new or update heating and air conditioning system.

For our commercial customers who are involved with new construction, our years of experience can make a significant difference to you when designing or creating the HVAC system for your new building. Give us a call and we’ll help you design an HVAC system that is uniquely suited to your building and company activities.