Posted on May 1 2025

Sort your HVAC system and lower energy bills





HVAC System Maintenance: How to Sort Your HVAC System for Better Performance and Lower Energy Bills


HVAC System Maintenance: How to Sort Your HVAC System for Better Performance and Lower Energy Bills

Proper HVAC system maintenance is essential for ensuring optimal performance and reducing energy costs. Your heating, ventilation, and air conditioning (HVAC) system plays a crucial role in maintaining a comfortable indoor environment. However, without regular maintenance, it can become inefficient, leading to higher energy bills and decreased comfort. In this comprehensive guide, we’ll explore how to effectively maintain your HVAC system to enhance its performance and lower your energy expenses.

Table of Contents

  1. Why HVAC System Maintenance Is Important
  2. Signs Your HVAC System Needs Maintenance
  3. Safety Precautions for HVAC Maintenance
  4. DIY HVAC System Maintenance Tips
  5. Regular Filter Replacement
  6. Cleaning Evaporator and Condenser Coils
  7. Checking and Sealing Ductwork
  8. Thermostat Calibration
  9. Lubricating Moving Parts
  10. Professional HVAC Maintenance Services
  11. Energy Efficiency and Cost Savings
  12. When to Replace Your HVAC System
  13. Common Mistakes to Avoid in HVAC Maintenance
  14. Conclusion
  15. About Wrestore

1. Why HVAC System Maintenance Is Important

Regular HVAC system maintenance is vital for several reasons. Firstly, it ensures that your system operates efficiently, which directly affects your energy bills. Secondly, maintenance helps prevent unexpected breakdowns, saving you from costly repairs. Furthermore, a well-maintained HVAC system improves indoor air quality, contributing to a healthier living environment.

Benefits of HVAC System Maintenance:

  • Enhanced Performance: Keeps your system running at optimal efficiency.
  • Lower Energy Bills: Reduces energy consumption and costs.
  • Extended System Lifespan: Prevents premature wear and tear.
  • Improved Air Quality: Reduces dust, allergens, and pollutants.
  • Fewer Repairs: Identifies issues before they become major problems.

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2. Signs Your HVAC System Needs Maintenance

Recognizing the signs that your HVAC system requires maintenance is crucial. Early detection allows you to address issues before they escalate, ensuring continued comfort and efficiency.

Common Indicators:

  • Unusual Noises: Banging, clanking, or squealing sounds during operation.
  • Inconsistent Temperatures: Uneven heating or cooling in different rooms.
  • Higher Energy Bills: Unexpected increases in energy costs.
  • Poor Airflow: Weak or reduced airflow from vents.
  • Frequent Cycling: System turns on and off more frequently than usual.
  • Unpleasant Odours: Musty or burning smells when the system is running.

Tip: If you notice any of these signs, schedule HVAC system maintenance promptly.

3. Safety Precautions for HVAC Maintenance

Before performing any HVAC system maintenance, it’s essential to prioritize safety. Taking proper precautions helps prevent accidents and equipment damage.

Safety Tips:

  • Turn Off Power: Always shut off the system at the thermostat and circuit breaker.
  • Wear Protective Gear: Use gloves and safety glasses when handling components.
  • Avoid Wet Conditions: Ensure the area is dry to prevent electrical hazards.
  • Use Proper Tools: Utilize appropriate tools for maintenance tasks.
  • Follow Manufacturer Instructions: Adhere to guidelines in the owner’s manual.

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4. DIY HVAC System Maintenance Tips

While some maintenance tasks require professional expertise, there are several DIY steps you can take to keep your HVAC system running smoothly. Regular attention can significantly improve performance and efficiency.

DIY Maintenance Tasks:

Tip: Regularly schedule these tasks to maintain consistent HVAC system performance.

5. Regular Filter Replacement

Replacing air filters is one of the simplest yet most effective HVAC system maintenance tasks. Clean filters improve airflow and indoor air quality.

Steps to Replace Filters:

  1. Turn Off the System: Ensure safety before removing the filter.
  2. Locate the Filter: Typically found in the return air duct or blower compartment.
  3. Remove the Old Filter: Note the size and airflow direction indicated on the filter.
  4. Install the New Filter: Insert it correctly, following the airflow direction.
  5. Turn On the System: Restore power and enjoy improved air quality.

Tip: Replace filters every 1-3 months, depending on usage and filter type.

6. Cleaning Evaporator and Condenser Coils

Over time, coils collect dirt and debris, reducing efficiency. Cleaning them is a vital part of HVAC system maintenance.

Steps to Clean Coils:

  1. Turn Off Power: Shut off the system at the breaker.
  2. Access the Coils: Remove the protective grilles or panels.
  3. Remove Debris: Use a soft brush to gently clean the coils.
  4. Apply Coil Cleaner: Spray a no-rinse coil cleaner as per instructions.
  5. Reassemble the Unit: Replace grilles or panels securely.
  6. Restore Power: Turn the system back on.

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7. Checking and Sealing Ductwork

Leaky ducts can lead to significant energy loss. Ensuring your ductwork is sealed is crucial for efficient HVAC system maintenance.

Steps to Check and Seal Ducts:

  1. Inspect Visible Ducts: Look for gaps, holes, or disconnected sections.
  2. Use Smoke Test: Hold incense near joints to detect leaks (smoke will waver).
  3. Seal Leaks: Apply mastic sealant or metal foil tape to seal gaps.
  4. Insulate Ducts: Wrap ducts in insulation to prevent energy loss.

Tip: Focus on ducts in unconditioned spaces like attics or crawl spaces.

8. Thermostat Calibration

A properly calibrated thermostat ensures accurate temperature control, contributing to efficient HVAC system maintenance.

How to Calibrate Your Thermostat:

  1. Check Temperature Accuracy: Compare thermostat reading with a reliable thermometer.
  2. Adjust Settings: Follow the manufacturer’s instructions to recalibrate.
  3. Upgrade if Necessary: Consider a programmable or smart thermostat for better control.

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9. Lubricating Moving Parts

Lubrication reduces friction in motors and bearings, extending the life of your HVAC system.

Steps to Lubricate Components:

  1. Turn Off Power: Always ensure the system is off before maintenance.
  2. Access the Motor: Remove the access panel carefully.
  3. Apply Lubricant: Use the appropriate oil for HVAC systems, applying to designated ports.
  4. Reassemble the Unit: Replace the panel securely.
  5. Test the System: Turn on power and check for smooth operation.

Tip: Refer to the owner’s manual for specific lubrication instructions.

10. Professional HVAC Maintenance Services

While DIY tasks are helpful, professional HVAC system maintenance is essential for comprehensive care. Experts can identify and address issues beyond the scope of routine maintenance.

Benefits of Professional Maintenance:

  • Expert Inspection: Thorough examination of all system components.
  • Advanced Cleaning: Deep cleaning of coils, burners, and other parts.
  • System Optimization: Adjustments to improve efficiency and performance.
  • Safety Checks: Ensure safe operation, including checking for gas leaks or electrical issues.
  • Professional Advice: Recommendations for repairs or upgrades.

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11. Energy Efficiency and Cost Savings

Effective HVAC system maintenance directly impacts energy efficiency, leading to significant cost savings. An efficient system uses less energy to achieve the desired comfort levels.

Ways to Improve Efficiency:

  • Regular Maintenance: Keeps the system operating optimally.
  • Programmable Thermostats: Automatically adjust temperatures to save energy.
  • Seal and Insulate: Prevent energy loss through ducts and building envelope.
  • Upgrade Equipment: Consider high-efficiency models when replacing components.
  • Monitor Energy Usage: Track consumption to identify areas for improvement.

Tip: Implementing these strategies can reduce energy bills by up to 30%.

12. When to Replace Your HVAC System

Despite regular HVAC system maintenance, there comes a time when replacement is more cost-effective than repairs. Recognizing the signs can help you make an informed decision.

Indicators for Replacement:

  • Age of System: Over 15 years old for furnaces, 10 years for air conditioners.
  • Frequent Repairs: Increasing frequency and cost of repairs.
  • Decreased Efficiency: Rising energy bills despite maintenance.
  • Poor Performance: Inability to maintain comfortable temperatures.
  • Environmental Concerns: Older systems using outdated refrigerants like R-22.

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13. Common Mistakes to Avoid in HVAC Maintenance

Avoiding common pitfalls ensures effective HVAC system maintenance and prolongs the life of your system.

Mistakes to Avoid:

  • Neglecting Regular Maintenance: Skipping routine tasks leads to inefficiency.
  • Ignoring Strange Noises or Smells: Early signs of problems that need attention.
  • Improper Filter Usage: Using incorrect filter sizes or types.
  • Blocking Air Vents: Furniture or drapes obstructing airflow.
  • DIY Repairs Beyond Expertise: Attempting complex repairs without professional help.

Tip: Always consult a professional if you’re unsure about any maintenance task.

14. Conclusion

Proper HVAC system maintenance is key to ensuring better performance and lower energy bills. By following the tips outlined in this guide, you can enhance your system’s efficiency, extend its lifespan, and enjoy a comfortable indoor environment. Regular maintenance not only saves you money but also contributes to a healthier living space.

Remember, while DIY maintenance is beneficial, professional services are essential for comprehensive care. Don’t hesitate to reach out to experts for inspections and complex tasks. With consistent attention and care, your HVAC system will serve you efficiently for years to come.

15. About Wrestore

Commercial and Residential Property Maintenance Specialists

At Wrestore, we are dedicated to helping homeowners maintain and enhance their properties. Based in London and serving areas within the M25, we bring over 30 years of combined experience in the property and built environment sector.

Our Services Include:

  • HVAC System Maintenance: Professional maintenance and repair services for your heating and cooling systems.
  • Plumbing: Expert installations and repairs by certified professionals.
  • Electrics: Safe and certified electrical services for peace of mind.
  • General Maintenance: From routine upkeep to minor repairs, we keep your property in optimal condition.
  • Decorating: Professional painting and decorating to transform your space.
  • Refurbishment: Comprehensive property upgrades tailored to your needs.
  • Handyman Services: Versatile assistance for various tasks around your property.

For more information on our services, visit our services page.

Why Choose Wrestore?

  • Reliability: We deliver hassle-free, dependable service that you can trust.
  • Expertise: Our skilled team ensures high-quality workmanship on every project.
  • Accreditations: We are accredited by Alcumus SafeContractor, Alcumus SafePQQ, and Gas Safe Register, demonstrating our commitment to safety and professionalism.
  • Customer Satisfaction: See our reviews on Trustpilot and discover why clients choose us for their property maintenance needs.

Check out our blog for more home maintenance tips, including our article on Cheap and Effective Ways to Improve Your Air Ducts for Better Air Quality.

Contact Us Today

Phone: +44 (0)207 183 2771
Email: works@wrestore.co.uk
Address: 227 Waterloo Road, London, SE1 8XH

Visit our website to learn more about how we can assist you in maintaining and enhancing your property.

Improve your comfort and save on energy bills by implementing effective HVAC system maintenance strategies today.

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Note: This blog post is intended for informational purposes and should not replace professional advice. Always consult qualified professionals for specific concerns related to your HVAC system.

Looking for more home improvement advice? Read our article on Spot and Repair Water Damage Before It Spreads.

For additional information on HVAC maintenance, visit the U.S. Department of Energy’s guide on maintaining your air conditioner. You can also consult the Health and Safety Executive’s guidelines on air conditioning and ventilation.


HVAC system maintenance: Technician performing maintenance on an HVAC unit
HVAC maintenance tip: Replacing a clean air filter for better performance


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