How to service a HVAC system?

Author: Curt Jast  |  Last update: Friday, October 24, 2025

HVAC Maintenance Checklist
  1. Shut Off Power. Any time you are working with electricity, moving parts, and large appliances, you should shut off power to the unit right from the source. ...
  2. Clear Debris. ...
  3. Clean the Unit. ...
  4. Straighten the Fins. ...
  5. Oil the Motor. ...
  6. Clean the Coils. ...
  7. Restart Your HVAC Unit. ...
  8. Air Filter.

Can I service my HVAC myself?

You can service some parts of your air conditioner, such as cleaning or replacing filters, cleaning the condenser coils, and checking the thermostat. However, other tasks, like inspecting and cleaning the evaporator coils, checking refrigerant levels, and inspecting and sealing ductwork are best left to professionals.

How do you service an HVAC unit?

Easy Steps to Keep Your Air-Conditioning Unit Running Smoothly
  1. Shut Off the Power. ...
  2. Remove Debris. ...
  3. Clean the Fins. ...
  4. Straighten the Fins + Clean the Area. ...
  5. Clean Area Around the Unit. ...
  6. Level the Unit. ...
  7. Clean the Evaporator Coil. ...
  8. Clean the Evaporator Drain.

What is done when an HVAC system is serviced?

During an HVAC tune-up, your technician will perform the following services: Coolant level and pressure checks. Thermostat calibration. Electrical system inspection and tightening, including wiring, contacts, capacitors, and relays. Evaporator coil and condensate drain cleaning.

What is the checklist when servicing HVAC?

Preventive Maintenance Checklist for Your HVAC System

Replace all of your unit's filters. Check the outside unit, clear any debris, and ensure the cabinet door is closed. Check the cabinet for leaks. To ensure proper airflow, clear any clogs in the drain lines.

Yearly HVAC Maintenance Checks

What's included in a HVAC service?

What Does an HVAC Service Call Include?
  • Check refrigerant levels.
  • Inspect the fins for any debris accumulation.
  • Lubricate the fan and other moving parts.
  • Check electrical connections for loose or worn-down wires.
  • Look for physical damage to the casing or internal components.

What are the 4 types of maintenance HVAC?

That means plumbing, electrical, landscaping, janitorial work, and HVAC services are all covered.
  • Corrective Maintenance.
  • Preventative Maintenance.
  • Risk-Based Maintenance.
  • Predictive Maintenance.

How much should HVAC maintenance cost?

An HVAC repair pro can recommend services based on your system. HVAC maintenance costs $250 on average, with a range between $100 and $650, depending on the HVAC type, location, and time of year. For a split AC and heating unit, you might spend up to $350 for routine maintenance.

Are HVAC service plans worth it?

HVAC maintenance plans help protect you from costly HVAC repairs. Benefits of these plans include checkups, seasonal maintenance, and priority service. Disadvantages of this plan include upfront costs and competing warranties.

Can I clean my HVAC myself?

When it comes to the nitty gritty, cleaning air ducts is not a do-it-yourself job. It requires tools, such as a high-powered vacuum and rotary brushes, that you don't have lying around in the garage. In addition, an improper cleaning job could damage the ducts, resulting in expensive repairs.

How do you pay for HVAC service?

Many HVAC companies offer financing to their customers to streamline the HVAC replacement process and paying for it. Banks and credit unions may approve you for a personal loan, home equity line of credit, or a home improvement loan where loan proceeds are used specifically to make the upgrades your home demands.

What does a HVAC inspection consist of?

The HVAC technician inspects all electrical components for wear and tear, including the wiring, capacitors, and contactors. They also check the service valves, access panel, and blower shut off for proper operation. They inspect the suction line insulation and drain pan to prevent leaks or water damage.

How to service AC DIY?

DIY AC Maintenance: What Homeowners Can Do
  1. Change or Clean the Air Filter.
  2. Clean Your AC's Condenser Coils.
  3. Clear the Area Around the Outdoor AC Unit.
  4. Check the Thermostat Settings.
  5. Inspect the Ductwork for Leaks.
  6. Annual Tune-Up and Inspection.
  7. Refrigerant Level Check and Recharge.
  8. Deep Coil Cleaning.

Is HVAC service easy?

Working in the HVAC industry brings a new challenge every day and a new opportunity to work with your hands and solve complex problems. HVAC work requires plenty of technical knowledge and the ability to think critically, be flexible and work independently.

How to tune up HVAC yourself?

DIY AC Tune-Up: Step by Step
  1. Inspect and Clean Air Filters: Begin by turning off the power to the AC unit. ...
  2. Clean the Condenser Coils: ...
  3. Check and Straighten Coil Fins: ...
  4. Inspect the Thermostat: ...
  5. Examine Ductwork for Leaks: ...
  6. Evaluate Refrigerant Levels: ...
  7. Lubricate Moving Parts: ...
  8. Inspect Electrical Connections:

What is the most expensive part in an HVAC unit?

Usually, it is a quick fix, but sometimes the failure can be caused by a much bigger problem. The most expensive part of an AC unit to replace and repair is the air compressor.

Can I do my own HVAC maintenance?

While many HVAC maintenance tasks can be handled by homeowners, it's crucial to schedule regular professional HVAC maintenance. A certified HVAC contractor can perform thorough inspections, identify potential issues, and conduct necessary repairs and system adjustments.

How often should a HVAC be serviced?

Heating and Air Conditioning equipment, no matter what kind you have, should be inspected, cleaned, and serviced at least once a year. The best scenario is to have the heating system checked in the Fall and the air conditioning checked in the Spring.

What is considered a major repair in HVAC?

Question #1: A "major repair" under EPA's regulations would be;
  • Replacing a condenser coil.
  • Replacing a filter-drier.
  • Replacing a condenser fan motor.
  • Replacing a blower fan motor.

What does HVAC servicing include?

He or she will inspect your system for signs of leaks, problems with electrical connections and wiring, and efficient thermostat operation. The winter months require different maintenance options, such as checking the heating elements, the pilot and thermocouple, limit controls, burners and safety controls.

How long does an HVAC service take?

An annual or bi-annual HVAC maintenance appointment generally takes somewhere between 1-2 hours, although this can vary quite a bit depending on several factors. These factors include the type of AC you have, the size of your home, and the amount of time that has passed since your last tune-up.

How often should I change my HVAC filter?

Generally, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days, or 3 months. That can change based on where your home is located (ex. dusty, dry climates), if you have any pets, and the age of your system and equipment.

How to service a HVAC unit?

HVAC Maintenance Checklist
  1. Shut Off Power. Any time you are working with electricity, moving parts, and large appliances, you should shut off power to the unit right from the source. ...
  2. Clear Debris. ...
  3. Clean the Unit. ...
  4. Straighten the Fins. ...
  5. Oil the Motor. ...
  6. Clean the Coils. ...
  7. Restart Your HVAC Unit. ...
  8. Air Filter.

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