Annual Maintenance Tips for Monsoon & Winter: Keep Your AC Performing Year-Round

Introduction

India’s climate is known for its extreme scorching summers, damp and stormy monsoons, and cold, dry winters. While air conditioners are mostly associated with summer comfort, they face environmental stress throughout the year. Many homeowners shut down their split air conditioner or window air conditioner after summer, assuming they won’t need attention until the next heatwave. However, this neglect can result in dust accumulation, mould buildup, rusting of components, electrical damage, and reduced cooling efficiency over time.

To keep your air conditioner running efficiently, annual maintenance is crucial. It not only extends the lifespan of the unit but also helps you avoid sudden breakdowns, reduces electricity bills, and protects your warranty. Whether you own a window AC or a split AC, both types require tailored seasonal care.

In this guide, you will find practical maintenance tips for the monsoon and winter, a month-wise upkeep calendar, warranty-safe DIY dos and don’ts, and how opting for an AMC plan can simplify your AC care all year long.

For specific rainy-season care, you can also check our detailed Monsoon AC Maintenance Checklist

Why Annual AC Maintenance Matters

Annual AC maintenance is not just a recommendation, it’s a necessity for keeping your unit efficient and long-lasting. Skipping regular servicing can result in clogged filters, reduced airflow, and poor cooling performance. Over time, this strain leads to higher electricity bills, sudden breakdowns, and costly repairs. Since air conditioners are highly sensitive to seasonal changes like humidity and temperature drops, routine checks help prevent rust, mould, and wear on vital components. Regular upkeep ensures your Voltas split AC 1.5 ton or any other unit stays reliable and performs at its peak year-round.

For more practical advice, read our blog on  How to Maintain Your AC for Long-Term Efficiency

What Happens If You Skip Seasonal AC Servicing?

1. Loss of energy efficiency
   Dirt, dust, and moisture block airflow, forcing the AC to work harder. This increases power consumption and utility bills.
   
   

2. Risk of mould and bacterial growth
   In the monsoon, high humidity causes water droplets to collect inside the unit. Damp filters become a breeding ground for mould and bacteria, leading to foul odours and health risks.
   
   

3. Winter dryness damage
   When the AC remains unused in dry winter months, its rubber seals, gaskets, and internal components may dry out or crack. This affects performance once summer returns.
   
   

4. Potential warranty issues
   Attempting self-repairs or skipping scheduled services can void the manufacturer’s warranty.
   
   

5. Reduced lifespan and higher repair costs
   Minor issues can escalate into major breakdowns, often requiring costly repairs or replacement.

Pro Tip: Investing in timely maintenance is far cheaper than paying for emergency repairs or a new AC unit.

Monsoon AC Check-Up Guide

Monsoon months in India bring high humidity, heavy rains, and frequent power fluctuations. Your AC is vulnerable to moisture-related issues, electrical damage, and mould growth. Here’s how to prepare your AC for the rainy season.

How to Prepare Your AC for Monsoon Humidity

1. Clean or replace the filters
   Filters trap dust, dirt, and moisture. Clean them every 2–3 weeks during the monsoon to prevent mould and improve airflow.

   If you’re unsure how to do this, check our guide on How to Replace Air Filters.

2. Inspect the drainage system
   Check the drainage pipe and tray for clogs. Water accumulation can lead to leaks, water damage, or fungal growth inside your AC.
   
   

3. Seal the outdoor unit
   Cover the outdoor unit with a waterproof yet breathable cover to protect it from heavy rain. Ensure proper ventilation to prevent condensation inside.
   
   

4. Check wiring and connections
   Monsoon moisture can corrode wires, sockets, or connections. Inspect regularly or have a technician check during your monsoon AC check-up.
   
   

5. Use an AC stabilizer
   Voltage fluctuations during storms can damage your AC’s compressor. An AC stabilizer prevents electrical damage.
   For more tips, see How to Protect Your AC During a Power Cut

6. Enable dry mode
   Modern ACs have a “dry mode” that reduces indoor humidity without excessive cooling, keeping your home comfortable.
   
   

7. Schedule professional servicing
   Get a certified technician to inspect coils, fins, and circuits. Professional servicing removes hidden moisture and ensures optimal performance.

Winter AC Preparation

Air conditioners often sit idle during winter, leading many users to overlook their maintenance. However, this period of low or no usage can cause hidden problems. Dust can settle on coils and internal parts, while rubber seals may dry out or crack, especially in dry climates. Inverter ACs are also prone to moisture-related corrosion if not properly maintained. Taking a few simple steps during winter like occasional fan mode runs and protective covering ensures your AC stays in good condition and performs efficiently when summer returns.

Is Your AC Ready for Low Usage in Winter?

1. Deep-clean coils and fins
   Cleaning the evaporator and condenser coils prevents hardened dust buildup that can strain the AC later.
   
   

2. Cover the outdoor unit
   Use a dust-proof cover to protect the outdoor unit from dirt, leaves, and corrosion.
   
   

3. Run fan mode occasionally
   Turn on the AC in fan mode for 15–20 minutes every 2–3 weeks. This keeps internal components lubricated and prevents moisture accumulation.
   
   

4. Inspect insulation for split ACs
   Check the pipes and insulation for cracks. Damaged insulation can reduce cooling efficiency and lead to leaks in summer.
   
   

5. Unplug when not in use
   Save energy and reduce circuit load by disconnecting the AC if you won’t use it for several months.
   
   

6. Moisture management for inverter systems
   Even inverter ACs can experience rust and corrosion in low-use months. A light inspection helps prevent issues.

Monthly Maintenance Calendar

Creating a monthly care calendar prevents last-minute servicing hassles. Here’s a recommended schedule:

• January–February:
  
  

• Keep units covered.

• Inspect wiring and circuits for rust or damage.
  
  

• March–May:
  
  

• Deep-clean coils and filters before the summer load.

• Check cooling efficiency and refrigerant levels.
  
  

• June–August (Monsoon):
  
  

• Conduct a professional monsoon AC check-up.

• Inspect drainage pipes and run the AC in dry mode weekly.

• Use AC stabilizers for voltage fluctuation.
  
  

• September–October:
  
  

• Run the dehumidifier mode to prevent mould buildup.

• Inspect the outdoor casing for corrosion.
  
  

• November–December:
  
  

• Clean and prep for winter storage.

• Unplug units and seal ducts if not in use.

Tip: Set recurring reminders on your phone or home assistant to stay consistent.

Don’t Void Your Warranty, Know These DIY Limits

Many AC owners try to handle maintenance themselves to save on service costs. While routine tasks like cleaning air filters or wiping vents are safe, anything beyond that can be risky. Opening internal panels, refilling refrigerant, or adjusting wiring without proper training may not only damage your unit but also void the manufacturer’s warranty. Brands require certified technicians and documented service logs for valid claims. Always check your warranty terms before attempting any repair or deep cleaning on your own.

What Can Void Your AC Warranty?

1. Unauthorised handling
   Opening panels, touching the compressor, or adjusting circuits without a certified technician’s help.
   
   

2. Refrigerant refills
   Adding or removing gas incorrectly can damage the compressor. Always get this done by professionals.
   
   

3. Unregistered service providers
   Brands like Voltas require authorised service logs for warranty claims.
   
   

4. Using non-genuine parts
   Third-party filters or parts can cause damage and void coverage.

Pro Tip: Maintain a service log. Keep receipts or digital records for every professional maintenance session.

Why AMC is the Best Way to Maintain Your AC

An Annual Maintenance Contract (AMC) is the simplest way to ensure your AC is serviced on time without the hassle of reminders or emergency breakdowns.

Benefits of an AC AMC

• Scheduled servicing without the need for manual follow-ups

• Priority support during peak seasons

• Discounted repairs and parts replacement

• Coverage for both split AC AMC charges and window

• Better resale value with documented maintenance

• No last-minute breakdowns during extreme weather

A comprehensive Voltas AC AMC covers cleaning, inspection, minor part replacements, and preventive maintenance. For owners of popular models, checking the Voltas split AC 1.5 ton price before choosing an AMC plan helps you make a cost-effective decision.

Why You Should Invest in an AMC Plan

Purchasing an AC AMC plan is not just about convenience but also about cost savings and peace of mind. With an AMC:

• You don’t have to worry about sudden breakdowns in peak summer.

• All preventive maintenance is handled automatically by professionals.

• You get priority service, which is crucial during busy seasons when technicians are in high demand.

• Repairs and replacements often come at a discounted cost or are fully covered under the AMC.

If you own a Voltas 1.5 Ton Split AC or any other popular model, an AMC plan ensures optimal performance and maximum lifespan. Considering the rising costs of emergency servicing, an AMC pays for itself by preventing unexpected repair bills and maintaining your warranty.

Pro Tip: Book your AMC plan today to avoid last-minute stress and enjoy uninterrupted comfort all year round.

FAQs

1. How often should I maintain my AC each year?

At least twice a year, before summer and after the monsoon. Light monthly cleaning is also advised.

2. Is winter AC maintenance really necessary in India?

Yes, idle ACs can develop dust, rust, and moisture problems that affect summer performance.

3. Does AMC cover damage from moisture or rust?

Most AMCs include preventive measures, but check your plan for detailed coverage.

4. What should I do if my AC smells during the monsoon?

Clean the filters, run dry mode, and check the drainage pipe. If the smell persists, book a professional cleaning.

Conclusion

Annual AC maintenance is not just a seasonal chore but also a long-term strategy to protect your appliance, reduce energy bills, and avoid inconvenient breakdowns. As India’s climate shifts between extremes, your AC endures more than just summer heat. Monsoon brings humidity and electrical issues, while winter invites dust buildup and seal damage. Taking time to clean filters, inspect wiring, and cover units during off-seasons can significantly extend your AC’s lifespan.

Following a structured monthly maintenance calendar ensures you're always prepared—no surprises when summer hits. But remember, not all upkeep should be DIY. Mishandling internal parts can void your warranty and cost you more in the long run.

This is why an AMC (Annual Maintenance Contract) is highly recommended. It offers scheduled servicing, priority support, discounted repairs, and warranty-safe maintenance, giving you complete peace of mind. Whether you own a window or split AC like the Voltas 1.5 Ton AC, investing in an AMC ensures uninterrupted comfort, optimal performance, and long-term savings.

Don’t wait, just secure your AMC plan today and enjoy hassle-free AC maintenance all year round!