6 Common Reasons Why Your AC is Blowing Warm Air – Causes and Solutions
By Moffam Electricals
An air conditioner that blows warm air instead of cool air can quickly turn a comfortable Nairobi afternoon into an uncomfortable one. This problem is common in both homes and offices and can be caused by several issues — from minor maintenance needs to serious mechanical faults.
At Moffam Electricals, we specialize in AC troubleshooting in Nairobi, helping homeowners and businesses restore their cooling systems to peak performance.
Common Causes of AC Blowing Warm Air
1. Incorrect Thermostat Settings
If your thermostat is set to “heat” or the fan is on “ON” instead of “AUTO,” your AC may circulate warm air. Always check your settings first.
2. Dirty or Clogged Air Filters
Blocked filters restrict airflow, reducing cooling efficiency and sometimes causing the AC to blow warm air. Cleaning or replacing filters can fix the problem.
3. Low Refrigerant Levels
Refrigerant is the chemical that absorbs heat from your indoor air. If levels are low due to a leak, your AC won’t cool properly.
4. Dirty Condenser Coils
The outdoor unit releases heat from inside your home. If its coils are dirty or blocked by debris, heat cannot be expelled effectively, leading to warm airflow.
5. Electrical Issues
Faulty wiring or tripped circuit breakers can stop essential components like the compressor from running, which prevents cooling.
6. Compressor Problems
The compressor is the heart of your AC. If it fails, your AC cannot circulate refrigerant to cool the air.
Solutions to AC Blowing Warm Air
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Check and adjust thermostat settings
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Clean or replace air filters every 1–3 months
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Inspect outdoor unit and clear away debris
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Schedule professional servicing to check refrigerant levels and detect leaks
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Repair or replace faulty components promptly
Why Professional AC Repair Matters in Nairobi
While some problems can be fixed with simple maintenance, issues like refrigerant leaks, compressor faults, or electrical failures require trained technicians. At Moffam Electricals, our AC experts ensure:
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Accurate diagnosis of the problem
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Safe, high-quality repairs
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Improved cooling efficiency
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Prevention of future breakdowns
Our Products
Hisense 12000 BTU Air Conditioner
Original price was: KSh 54,000.00.KSh 52,000.00Current price is: KSh 52,000.00.
Hisense 18000 BTU Air Conditioner
Original price was: KSh 72,000.00.KSh 69,500.00Current price is: KSh 69,500.00.
Hisense 24000BTU Air Conditioner
Original price was: KSh 104,000.00.KSh 101,000.00Current price is: KSh 101,000.00.Preventing Warm Air Problems in the Future
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Service your AC at least once a year
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Keep indoor and outdoor units clean
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Avoid overworking your AC by using energy-efficient temperature settings
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Invest in an inverter AC for more stable cooling and reduced strain on components
Why Choose Moffam Electricals for AC Troubleshooting in Nairobi?
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Experienced, certified AC technicians
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Service for all major AC brands (LG, Samsung, Hisense, Panasonic)
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Same-day repair services available
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Affordable and transparent pricing
Contact Moffam Electricals today for fast and reliable AC repair services in Nairobi.
Frequently Asked Questions (FAQ)
1. Why is my AC blowing hot air even after I clean the filters?
It may have low refrigerant levels, a compressor issue, or thermostat malfunction.
2. Can I fix refrigerant leaks myself?
No — handling refrigerant requires specialized tools and certification.
3. How often should I replace my AC filter in Nairobi?
Every 1–3 months, depending on dust levels and usage.
4. Does warm air mean my AC needs replacement?
Not always — many cases are fixable with repairs or maintenance.
5. Do you offer emergency AC repair in Nairobi?
Yes, Moffam Electricals provides same-day troubleshooting and repairs.
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