Manufactured Home Cooling Systems

Keep Your A/C Running Efficiently & Prevent Costly Breakdowns

A properly functioning cooling system is essential for keeping your manufactured home comfortable and energy-efficient. Unlike traditional site-built homes, manufactured homes often have smaller ductwork, packaged HVAC units, or window A/C systems that require specialized maintenance. Neglecting routine care can lead to higher energy bills, poor air circulation, and expensive repairs.

In this guide, we’ll cover everything you need to know about manufactured home cooling systems, including how to maintain your A/C, troubleshoot common issues, and improve efficiency.

Manufactured homes use various types of air conditioning systems, each with its own maintenance needs. The most common include:

1. Central Air Conditioning

Uses a split-system or packaged unit to cool the entire home.
Works best with well-insulated ductwork and proper airflow management.
Requires seasonal maintenance, including filter replacement and coil cleaning.

2. Window A/C Units

Ideal for smaller manufactured homes or homes without ductwork.
Requires regular filter cleaning and seasonal storage to extend lifespan.
Can be supplemented with ceiling fans or portable units for extra cooling.

3. Ductless Mini-Split Systems

Provides zoned cooling without the need for ductwork.
More energy-efficient than window units but requires professional installation.
Needs annual servicing, including refrigerant checks and coil cleaning.

4. Evaporative (Swamp) Coolers

Best for dry climates where humidity is low.
Uses water to cool air, making it more energy-efficient than traditional A/C.
Requires pad replacement, water level checks, and seasonal cleaning.

Routine maintenance prevents system failure, improves energy efficiency, and extends the life of your cooling system. Follow these essential steps:

1. Replace or Clean Air Filters Monthly

Dirty filters restrict airflow and make your A/C work harder.
Use MERV-rated filters appropriate for your system.
Wash reusable filters every 30 days and replace disposable ones every 1-3 months.

2. Clean Condenser Coils and Fins

The outdoor unit (condenser) accumulates dust, dirt, and debris.
Turn off power and use a coil cleaner or soft brush to clean the fins.
Ensure 2 feet of clearance around the outdoor unit for proper airflow.

3. Check and Clean Ductwork (For Central A/C Systems)

Leaky or clogged ducts reduce cooling efficiency and increase energy costs.
Inspect duct joints for gaps, tears, or loose connections.
Use duct sealant or foil tape to seal minor leaks.
Schedule a professional duct cleaning every 2-3 years.

4. Inspect Refrigerant Levels

Low refrigerant levels reduce cooling efficiency and may indicate a leak.
Only licensed HVAC professionals should recharge refrigerant.
Signs of low refrigerant: warm air from vents, hissing sounds, or frozen coils.

5. Test Thermostat and Electrical Connections

Ensure the thermostat is properly calibrated for accurate temperature control.
If the A/C cycles on and off too frequently, check for loose wiring or faulty relays.
Consider upgrading to a programmable or smart thermostat for better efficiency.

6. Inspect the Drain Line for Clogs

The condensate drain removes excess moisture from the system.
Clogged drains can cause water damage and mold growth.
Clean with a mixture of vinegar and warm water every few months.

If your manufactured home cooling system isn’t working properly, here are some common issues and how to fix them:

Problem: A/C is Blowing Warm Air

✅ Check the thermostat – Ensure it's set to "cool" and the temperature is lower than room temperature.
✅ Inspect the air filter – A dirty filter restricts airflow, causing inefficiency.
✅ Check for refrigerant leaks – Ice on coils or hissing noises may indicate a problem.
✅ Verify power supply – Check breakers and ensure the unit is receiving electricity.

Problem: Weak Airflow from Vents

✅ Clean or replace the filter – A clogged filter reduces airflow.
✅ Inspect ductwork – Look for leaks, blockages, or disconnected sections.
✅ Check fan speed settings – Some systems allow adjustments for better airflow.

Problem: A/C is Constantly Running or Short Cycling

✅ Ensure proper thermostat placement – Avoid direct sunlight or heat sources.
✅ Check refrigerant levels – Low levels can cause frequent cycling.
✅ Inspect condenser coils – Dirty coils cause the system to work harder.

Problem: Unusual Noises from A/C Unit

✅ Rattling – Could indicate loose components or debris in the fan.
✅ Hissing – May suggest a refrigerant leak that needs professional repair.
✅ Buzzing or humming – Could mean electrical issues or motor failure.

Problem: A/C Unit Won't Turn On

✅ Check the circuit breaker – A tripped breaker can prevent operation.
✅ Inspect the thermostat – Dead batteries or faulty wiring may be the issue.
✅ Examine the outdoor unit – A damaged capacitor or disconnected wiring may need repair.

Problem: A/C Emits a Musty or Burning Smell

✅ Musty odor – Indicates mold in the ductwork or clogged drain lines.
✅ Burning smell – Could be overheating components or electrical issues.
✅ Turn off the unit and call an HVAC professional if burning smells persist.

Types of Cooling Systems in Manufactured Homes