July 8, 2025

How to Stay Cool and Comfortable in Your Manufactured Home This Summer

how to keep a manufactured home cool featured imageModern Manufactured Home Interior

4 questions to consider before buying a home

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Simple steps to buy a home successfully

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Consider your finance options, and then choose the best one available

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Make an offer with some wiggle room for negotiation

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Which other tips do you recommend when buying a home?

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Understand Heat Gain in Your Manufactured Home

Before you turn up the AC, it helps to understand where summer heat tends to collect in a manufactured home and how to address it. Simple enhancements can keep indoor temperatures pleasant on roofs, windows, and duct runs.

Your roof often carries the brunt of the midday sun. A reflective coating or radiant barrier under the shingles can stop heat from reaching your living spaces. Windows—especially larger picture panes—will perform best with low-E glass, quality seals, or solar-screen film to reject unwanted solar gain. And when your ductwork passes through a warm crawlspace or attic, adding insulation or sealing joints prevents cooled air from warming on its way to each room.

By pinpointing these key areas and applying targeted upgrades, you’ll maintain a fresh, comfortable atmosphere all summer long without relying solely on your air conditioner.

Upgrade Insulation and Seal Every Gap

A tight, well-insulated shell works just as hard against summer heat as it does against winter cold. Start in the attic or ceiling access panel and check your current insulation. If it’s below R-30 (or you can barely see the insulation at all), adding more high-density batts or a layer of spray foam can instantly slow down heat transfer. For an extra boost, a reflective radiant barrier beneath the roof deck will deflect sunlight before it ever reaches your insulation.

Once the ceiling is sorted, move to the walls and skirting. Even the smallest crack around a window frame or a plumbing vent can let hot air sneak in and cool air leak out. Walk the perimeter with a simple caulk gun or foam sealant and target:

  • Gaps around windows and doors

  • Wiring and vent penetrations

  • The seam where the home meets its foundation skirt

A properly sealed home keeps your cool air exactly where you want it: inside. With a few upgrades and some airtight sealing, you’ll reduce the workload on your AC, save on energy bills, and enjoy a more comfortable summer inside your manufactured home.

Optimize Your HVAC System and Airflow

Even the tightest shell won’t help if your air conditioner is struggling—so start by scheduling a professional tune-up to clean or replace filters, inspect coils, and verify refrigerant levels. A well-maintained system runs more efficiently, cools faster, and costs less to operate.

Next, take a look at your ductwork. In many manufactured homes, ducts snake through unconditioned crawl spaces or attics where summer heat builds up. Sealing visible joints with mastic or foil tape (avoid cloth duct tape, which dries out) keeps cooled air from reheating before it ever reaches your living room. 

Once sealed, balance airflow by partially closing vents in seldom-used rooms and opening them fully in high-traffic zones. If you still notice weak spots—like a hot guest bedroom—consider installing a small inline duct booster fan; it quietly pushes extra cool air into that stubborn nook without overloading your central unit.

Leverage Ceiling Fans and Portable Cooling Units

Strategic air movement can cut AC runtime and keep every corner of your home comfortable. Ceiling fans create a wind-chill effect, so ceiling blades should spin counterclockwise at high speed. Rather than blasting them nonstop, use a timer or smart plug to run fans only when rooms are occupied.

For supplemental cooling, portable air conditioners and evaporative coolers (swamp coolers) can be lifesavers in rooms that see the most sun. Match the unit to the square footage—oversized units cycle on and off too quickly, overspending energy, while undersized units work too hard. Position portable units near a shaded window and seal gaps around the exhaust hose with a foam panel or window kit to prevent hot outdoor air from creeping in.

Control Solar Heat with Effective Window Treatments

Windows are your home’s eyes on the world and major pathways for heat gain. Blocking the sun before it crosses the glass saves far more energy than letting heat in and then cooling it down. Solar-screen window film and reflective blinds can reduce solar gain by up to 60%. If you prefer softer textures, install blackout shades or insulated cellular curtains that trap a layer of air against the glass. When temperatures drop in the evenings, open lightweight curtains to release trapped heat and invite a refreshing breeze.

Shade Your Home Inside and Out

Exterior shading is one of the most underutilized cooling strategies. Fast-growing deciduous trees planted on the south and west sides of your home can block intense summer sun while allowing winter warmth through bare branches. 

If planting takes too long, install retractable awnings or shade sails to cast broad shadows over windows and siding. Inside, lightweight, light-colored draperies reflect light away from your living space, while indoor plants transpire moisture, subtly lowering the ambient temperature and boosting comfort.

Harness Natural Ventilation and Night Cooling

Sometimes the coolest air comes free. Take advantage of lower evening temperatures by opening windows on opposite sides of your home to create a gentle cross-breeze. Bedrooms and living areas benefit most when you open a window low on the shaded side of the house and a higher window on the warm side. Leave interior doors open to let air drift through hallways, and consider window screen upgrades to keep insects out without blocking airflow. In the morning, close windows and lower blinds to trap the cool air you’ve earned.

Use Smart Thermostats and Home Automation

A programmable or smart thermostat can shave peak energy costs without sacrificing comfort. Set your thermostat to:

  • Raise the temperature by a few degrees while you’re away at work.

  • Begin pre-cooling the house 30–60 minutes before you return.

  • Lower the settings further overnight when body heat and bed linens add warmth.

Many smart systems learn your schedule, adapt to outdoor weather forecasts, and allow remote adjustments via smartphone. Some even integrate with smart vents, closing off unused rooms and directing cooled air where it’s needed most.

DIY Maintenance and Quick-Fix Tricks

Keeping your manufactured home cool doesn’t always require a contractor. A few simple checks and fixes can pay big dividends:

  • Door Sweeps & Weatherstripping: Install rubber or brush sweeps under exterior doors and replace worn weatherstripping around windows to block drafts.

  • Reflective Roof Coating: A light-colored, reflective coating applied to metal roof panels can slash solar heat absorption by up to 30%.

  • Light Paint Refresh: If you have colored siding or skirting, repaint with lighter shades to reflect, rather than absorb, sunlight.

These inexpensive, DIY-friendly tweaks can significantly reduce indoor temperatures and complement larger upgrades.

Summer Comfort Strategies for Your Manufactured Home

As summer heats, a few strategic upgrades and seasonal routines can make your manufactured home feel like an oasis rather than an oven. From sealing and insulating the shell to fine-tuning your HVAC, adding smart fans and window treatments, and even harnessing cool evening breezes, these simple steps help you stay comfortable while keeping energy costs in check. 

At MCM Communities, we’re here to support every part of your home’s performance—from recommending insulation improvements and trusted HVAC partners to helping you customize shading solutions that suit your style and budget. 

Ready to keep your home cool all season long? Call us today to schedule your complimentary summer home comfort consultation.