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Air Conditioning

Up Front



On-Call Staff

Putting your confidence in an HVAC company to take care of your air conditioning tune-ups and maintenance needs is a big undertaking, but it’s worth it to avoid unwanted surprises. Cornerstone Services is proud to serve Northern Massachusetts and Southern New Hampshire, including Rockingham, Hillsborough, and Essex.

If you don’t prioritize the maintenance of your HVAC system, you may find yourself in need of AC installation and replacement sooner than you anticipated.

For more information about our air conditioning tune-up and air conditioning maintenance packages, don’t hesitate to reach out to our team today!

What Is an AC Tune-Up?

An air conditioning tune-up is not a quick process. The service is designed to be thorough so that any early signs of trouble are easily detected and remedied before they develop into more expensive repairs and problems.

You can expect an air conditioning tune-up to include:

  • Cleaning of the condenser and evaporator coils
  • Inspecting the refrigerant levels and checking for coolant leaks
  • Recalibrating your thermostat
  • Inspecting the ductwork
  • Confirming all electrical connections are secure and safe for system operation
  • Rating the performance and condition of the blower belt and motor
  • Changing air filters

If you use a portable or window unit air conditioning system, our tune-up services will include window seals to ensure the efficiency of your unit. For more information about our air conditioning tune and maintenance services, don’t hesitate to reach out today!

Turn to Our Air Conditioning Maintenance Services

Air conditioning maintenance is the key to making the most of your HVAC system’s lifespan and energy efficiency. Our maintenance services include air conditioning tune-ups and more in-depth repairs, depending on what your system needs. Central air conditioning systems may require air duct cleaning as part of your preventative maintenance plan.

Our qualified technicians will thoroughly inspect your system during your air conditioning maintenance and tune-ups. If anything is found to be wrong, they will be transparent about necessary repairs and estimates.

For more information about our repair services, AC tune-ups, and other maintenance services, reach out to our team today!

What We Do...

Air Conditioner Installation

Basement Remodeling

Bathroom Remodeling

Ceiling & Ventilation Fans

Ceiling & Wall Repairs

Door Repair/Installation

Fence Repair

Fixture Repair/Installation

Flooring Installation

General Maintenance

Gutter Repair/Cleaning

Home Security System

Kitchen Remodeling

Painting/Paint Removal

Shelving Installation

Skylight Installation

Soundproofing Installation

Spas, Hot Tubs & Pool Connections


Window Installation/Cleaning

Our Guarantee:


Our valued customers are never kept waiting for professional help to arrive. Our service vehicles are available on-call from multiple locations across southern New Hampshire and northern Massachusetts.


When it comes to services rendered, we believe in being fully transparent. Our per-job pricing model, as opposed to a per-hour one, ensures the price for the work required remains the same from quote to completion.


Our professional workers are trained to provide your home or business with safe, reliable electrical solutions, cleaning services, handyman services, plumbing works, and HVAC services.

Contact Us Today!

While our company is headquartered in Salem, we're proud to service areas throughout southern New Hampshire and northern Massachusetts including Rockingham, Hillsborough, and Essex Counties.

Want a quote? Reach out to us today to schedule an appointment or for more information about our services.

Location of requested service.

Our Other Services

Learn more about services we offer residential and commercial properties:

Electrician working on electrical box


We offer expert residential and commercial electrical solutions across southern New Hampshire as well as northern Massachusetts. When you turn to Cornerstone, you can expect on-time, reliable electrical services at up-front prices — a reputation that has solidified our team as the tried and trusted choice for homes and businesses throughout the area.

Cleaner cleaning storage room


We offer cleaning solutions for your home or business that give you peace of mind and clean, tidy areas! With cleaning services that cater to both residential and commercial spaces, our professionals are ready to tackle even the toughest of messes. Rest assured that we conduct background checks on each worker before they step foot onto your property.

Handyman working on house


Have a home project you need help getting done? Want to rely on a professional with the resources and equipment to do it the right way? Turn to our professional handyman services! We offer various home improvement services, including everything from yard clean-up to extensive electrical repairs.



Cornerstone Services now offers professional Heating, ventilation, and air conditioning (HVAC) solutions. With our trained experts in the field of HVAC, you can count on Cornerstone Services to install, repair, and or replace HVAC systems in both residential and commercial spaces. Click below to learn more about this amazing service.

Splashing water into a cup in a kitchen sink


We offer professional residential and commercial plumbing solutions across southern New Hampshire as well as northern Massachusetts. When you turn to Cornerstone for your plumbing needs, you can expect on-time, reliable plumbing repair and installation services — a reputation that is solidified by our team of specially-trained experts who have years of experience in the field and will offer you practical solutions.