Centennial HVAC Maintenance

AC Repair, Air Conditioning Service, Furnace Repair, and Preventative Maintenance for your Home.

We offer service 24 hours a day, 7 days a week, 365 days a year to Centennial & Surrounding Areas

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HVAC Maintenance

Your comfort system needs regular HVAC maintenance to deliver trouble-free, efficient performance all year round. Lack of maintenance is the #1 reason for system failure and GUARDIAN HEATING & AIR CONDITIONING encourages our customers to take a planned preventative approach to maintenance.

Planned preventative maintenance maintains your heating, ventilation, and air conditioning system in peak performance prolongs the life of your equipment and helps identify problems before they require costly repairs.

Let us serve you by taking over your equipment’s required maintenance with a one-year or two-year planned preventative maintenance agreement.

A Guardian Planned Preventative Maintenance Air Conditioner Tune-Up includes:

  • Checking refrigerant levels and adequate charge
  • Inspecting and cleaning the condenser and indoor coils
  • Checking the amp draw of the compressor
  • Oiling the fan motors
  • Inspecting the condensate drain
  • Checking that belts are well adjusted
  • Checking the system operating pressures and temperatures
  • Testing the capacitors and compressor contactors
  • Replacing air filter

A Guardian Planned Preventative Maintenance Furnace Tune-Up includes:

  • Monitoring and evaluating all safety controls
  • Observing heat exchanger for integrity and carbon dioxide levels
  • Inspecting and cleaning burners and furnace cabinet
  • Evaluating for proper venting and duct work
  • Cleaning blower assembly
  • Checking temperature rise
  • Inspecting, cleaning, and monitoring flame sensor
  • Testing gas pressure and adjusting for efficiency
  • Changing air filter
  • Cleaning and lubricating motor
  • Cleaning flame sensors
  • Measuring currents and electrical values
  • Testing for gas leaks in furnace and associated piping
  • Adjusting thermostat and monitor operation

If you need HVAC Maintenance you’re in the right place!

Keeping you comfortable is our goal – if you need HVAC maintenance call us for details. We can service your needs 24 hours a day, 7 days a week, 365 days a year.

We are the Top Choice for Centennial AC Repair and Service, Centennial Furnace Repair and Service, HVAC Installation, and HVAC Maintenance.




We proudly use products from the following manufacturers:

HVAC Financing Available!

To make your purchase more affordable, we offer financing for our customers. Contact us to learn more.

Centennial Air Conditioning Services

Centennial AC Repair

AC Repair

Our experienced team can handle your air conditioning repair needs.

Centennial AC Service

AC Service

Our NATE certified technicians can provide air conditioning service to your home.

Centennial ac installation

AC Installation

The team at Guardian is ready to handle your air conditioning installation. 

centennial ac maintenance

AC Maintenance

We know the importance of air conditioning maintenance to keep your system running. 


Centennial and Surrounding Areas


AC Repair, Air Conditioning Service, Furnace Repair, Indoor Air Quality, and Preventative Maintenance for your Home.

We offer service 24 hours a day, 7 days a week, 365 days a year to Centennial & Surrounding Areas

Office  303-952-9047
Emergencies  303-503-1446