Key Takeaways
Clean the aluminum exterior every 3-6 months with mild detergent to prevent corrosion and maintain appearance
Prepare for winter by checking insulation, sealing gaps, and servicing heating systems before temperatures drop below freezing
Inspect waterproofing and drainage before each rainy season to prevent water infiltration damage
Replace HVAC filters every 3 months and schedule annual electrical inspections for safety
Follow seasonal maintenance schedules to extend your unit's lifespan to 20-25 years
Space Capsule House Maintenance: A Complete Guide to Protecting Your Investment
Why maintenance matters more than you think
When you invest in a space capsule house, you're buying a structure designed to last 20-25 years. Our units use aircraft-grade aluminum, industrial insulation, and weather-sealed components that outperform traditional construction materials. But like any building exposed to the elements, they need regular care.
Think of it this way. A car can run for 300,000 miles with proper maintenance, or die at 80,000 miles without it. The same logic applies here. Small problems become expensive ones when ignored. A tiny seal gap lets in moisture that damages insulation. A clogged drain channel causes water pooling that corrodes the shell. A dirty HVAC filter makes the system work harder and fail sooner.
We've seen units that look brand new after 15 years because owners followed maintenance routines. We've also seen units need major repairs after just 5 years because they were neglected. The difference isn't luck or build quality. It's maintenance.
This guide covers everything you need to know. Follow it, and your space capsule house will serve you well for decades.
Exterior maintenance — protecting the aluminum shell
The aluminum shell is your first line of defense against weather. It's durable, but it needs care.
Cleaning the aluminum exterior
Frequency matters. In normal conditions, clean the exterior every 3-6 months. In coastal areas with salt spray, monthly cleaning prevents corrosion. Industrial zones with air pollution also need more frequent cleaning.
Here's the right way to do it:
Use a garden hose or pressure washer set to low pressure (under 1000 PSI)
Apply mild detergent mixed with water (pH 7-8, avoid acidic or alkaline cleaners)
Scrub with soft bristle brushes or microfiber cloths
Work from top to bottom, rinsing each section before the soap dries
Dry with chamois or squeegee to prevent water spots
What not to do: Don't use steel wool, wire brushes, or abrasive pads. They scratch the surface coating. Avoid cleaners containing chlorine, ammonia, or strong acids. Don't let soap dry on the surface, as it leaves residue that attracts dirt.
Corrosion inspection
Aluminum naturally resists rust, but it can corrode in certain conditions. Salt air is the biggest threat in coastal installations. Industrial pollution can also cause problems.
During each cleaning, look for:
White or gray powder on the surface (early corrosion)
Pitting or small holes in the metal
Discoloration, especially around joints and fasteners
Bubbling or peeling of the powder coating
If you spot early corrosion, clean the area with aluminum polish and apply a protective coating. For pitting or coating damage, call us for professional repair. We can touch up small areas or recoat sections if needed.
Joint and seal inspection
Your unit has welded seams at the factory, which are permanent and don't need attention. But the joints between sections (if you have a multi-section unit) and the seals around windows and doors need checking.
Inspect these areas twice a year:
Look for gaps in sealant at window and door frames
Check rubber gaskets for cracking or hardening
Examine bolted joints for looseness or corrosion on fasteners
Test door and window operation — they should close smoothly with even pressure
Replace damaged gaskets within 30 days. Touch up sealant with marine-grade silicone if you see gaps. Tighten loose fasteners with a torque wrench to the specification in your owner's manual.
Winter care for your space capsule house
Our units are rated for operation down to -30°C. We've installed them in northern China, Russia, and high-altitude locations where winters are brutal. But you need to prepare properly.
Pre-winter preparation
Start winter prep when temperatures drop below 10°C, usually late autumn. Don't wait until the first frost.
Check these items:
Insulation integrity: Inspect visible insulation in the mechanical compartment and under the floor (if accessible). Look for gaps, compression, or moisture damage.
Window and door seals: Close a piece of paper in the door or window. If you can pull it out easily, the seal needs adjustment or replacement.
Heating system: Run the heater for 30 minutes and verify it reaches set temperature. Check for unusual noises or odors.
Exposed pipes: Insulate any pipes in unheated spaces with foam pipe insulation rated to -40°C.
During winter
Keep the interior heated to at least 10°C even when you're away. This prevents pipe freezing and condensation damage. The HVAC system can maintain this temperature with minimal energy use.
For snow removal:
Clear snow from the roof when it exceeds 30cm depth
Use a plastic snow rake with a telescoping handle — never metal tools
Pull snow away from roof edges to prevent ice dam formation
Don't walk on the roof to remove snow unless necessary, and then only with snowshoes to distribute weight
Watch for ice dams at roof edges. These form when roof heat melts snow that refreezes at cold edges. If you see icicles or ice buildup, improve attic ventilation or add heat cables at roof edges.
After winter
When spring arrives, do a post-winter inspection. Look for:
Condensation or moisture inside the unit
Cracks in seals caused by freeze-thaw cycles
Damage to exterior coating from ice or snow load
HVAC performance issues from heavy winter use
Waterproofing and drainage checks
Water is the enemy of any building. Your space capsule house has multiple waterproofing layers, but they need inspection and maintenance.
Roof drainage system
The roof has integrated drainage channels that direct water to downspouts at the corners. These channels clog with leaves, dirt, and debris.
Clean them quarterly:
Remove debris by hand or with a wet/dry vacuum
Flush channels with water from a hose
Check that water flows freely through downspouts
Verify the ground beneath downspouts drains away from the foundation
If water pools on the roof for more than 24 hours after rain, the drainage system needs attention. This can indicate clogged channels or settling of the foundation that changed the roof pitch.
Window and door waterproofing
Windows and doors have multiple seals: weather stripping, rubber gaskets, and silicone sealant at the frame edges.
Before each rainy season, test the waterproofing:
Spray water on each window and door with a garden hose for 5 minutes
Check the interior for any water infiltration
Look for damp spots on walls, floors, or ceilings near openings
Operate each window and door — they should close with firm, even pressure
Replace weather stripping if it feels hard, cracked, or doesn't spring back when pressed. Reseal frame edges with marine-grade silicone if you see gaps or cracks.
Pipe and utility penetrations
Plumbing, electrical, and HVAC pipes enter the unit through sealed penetrations in the floor or walls. These seals can crack or shrink over time.
Inspect annually:
Check the exterior of all pipe penetrations
Look for gaps between pipes and the shell
Reseal with appropriate materials (butyl rubber tape for exterior, silicone for interior)
Pre-rainy season checklist
Complete this checklist 2-4 weeks before your region's rainy season:
Clear all roof drainage channels and downspouts
Test window and door seals with hose spray
Inspect pipe penetration seals
Check that the ground slopes away from the foundation on all sides
Verify gutters and splash blocks direct water at least 1 meter from the unit
Stock emergency supplies: tarps, sealant, and towels
Interior maintenance — HVAC, plumbing, electrical
The systems inside your unit need regular attention. Most tasks are simple, but some require professionals.
HVAC system maintenance
Your HVAC system heats, cools, and ventilates the space. It works harder than any other system in the unit.
Filter replacement: Change air filters every 3 months, or monthly in dusty environments. Dirty filters reduce efficiency by 15-30% and can cause the system to overheat. Use filters with MERV rating 8-11 for the balance of filtration and airflow.
Annual professional service: Have a technician inspect the system once a year. They should:
Check refrigerant levels and look for leaks
Clean evaporator and condenser coils
Inspect electrical connections and contacts
Test safety controls and thermostat calibration
Lubricate motors and check belt tension (if applicable)
Ventilation: Run the ventilation system for at least 30 minutes daily, or use the continuous low-speed setting. This removes moisture and indoor pollutants.
Plumbing system care
Plumbing issues cause some of the most expensive damage if not caught early.
Regular tasks:
Clean drain strainers monthly to prevent clogs
Check under sinks and around the toilet base for leaks quarterly
Test water pressure — sudden changes can indicate pipe problems
Flush the water heater annually (if equipped) to remove sediment
Winter pipe protection: In freezing climates, maintain minimum 10°C indoor temperature. Open cabinet doors under sinks to let warm air reach pipes. If you leave during winter, drain the water system or add antifreeze rated for potable water systems.
Electrical system inspection
Electrical problems are fire hazards. Have a licensed electrician inspect the system annually.
Between professional inspections, watch for warning signs:
Flickering lights or intermittent power
Warm or discolored outlets and switches
Burning smells or unusual odors
Frequent circuit breaker trips
Sparking when plugging in devices
If you notice any of these, stop using the affected circuit and call an electrician immediately.
Humidity and moisture control
Keep indoor humidity between 40-60%. Higher levels cause condensation, mold, and material damage. Lower levels cause static electricity and respiratory irritation.
Control humidity by:
Using bathroom and kitchen exhaust fans when cooking or showering
Running a dehumidifier in winter if humidity exceeds 60%
Fixing leaks promptly to prevent moisture buildup
Ensuring proper ventilation throughout the unit
Maintenance schedule by season
Follow this seasonal schedule to stay on track throughout the year.
Spring (March-May in Northern Hemisphere)
Inspect the exterior for winter damage
Clean roof drainage channels
Test window and door seals
Service HVAC system before cooling season
Check for condensation or moisture damage from winter
Clean gutters and downspouts
Inspect foundation for settling or damage
Summer (June-August)
Wash the exterior thoroughly
Inspect for corrosion, especially in coastal areas
Replace HVAC filters
Check ventilation system operation
Inspect seals around windows and doors
Clear drainage channels after summer storms
Test smoke and carbon monoxide detectors
Autumn (September-November)
Complete pre-winter preparation checklist
Check and repair insulation
Service heating system
Inspect and seal any gaps or cracks
Insulate exposed pipes
Stock winter supplies (snow rake, deicer)
Test backup power systems (if equipped)
Winter (December-February)
Maintain minimum 10°C indoor temperature
Clear roof snow when it exceeds 30cm
Monitor for ice dams at roof edges
Check for condensation weekly
Replace HVAC filters monthly during heavy use
Keep ventilation system running daily
Watch for drafts indicating seal problems
Common problems and how to fix them
Here are the issues we see most often, and how to address them.
Condensation inside the unit
Symptoms: Water droplets on windows, damp walls, musty odors, visible mold spots.
Causes: Indoor humidity above 60%, poor ventilation, thermal bridging at window frames, damaged vapor barrier.
Solutions:
Run ventilation system 30+ minutes daily
Use a dehumidifier to maintain 40-60% humidity
Check bathroom and kitchen exhaust fans
Inspect vapor barrier behind wall panels (professional task)
Add thermal breaks at window frames if thermal bridging occurs
Door and window seal wear
Symptoms: Drafts, difficulty closing, water infiltration, whistling noises, visible gaps.
Causes: Normal wear over time, UV exposure, improper installation, debris in tracks.
Solutions:
Clean door and window tracks with a vacuum and damp cloth
Adjust hinges or latches if the door doesn't close evenly
Replace weather stripping if it's hard, cracked, or compressed
Apply silicone lubricant to rubber gaskets annually
Reseal frame edges with marine-grade silicone if gaps appear
Minor scratches on exterior
Symptoms: Visible scratches in the powder coating, exposing bare aluminum.
Causes: Impact from debris, improper cleaning methods, contact with sharp objects during transport or installation.
Solutions:
Clean the scratched area with mild detergent and dry completely
Apply touch-up paint matching your unit's color within 30 days
For deeper scratches, use aluminum primer followed by topcoat
Consider professional recoating for large or multiple scratches
Don't ignore scratches — exposed aluminum corrodes faster
Drainage clogs
Symptoms: Standing water on roof after rain, water overflowing from drainage channels, interior leaks near windows.
Causes: Leaves, dirt, insects, or debris blocking drainage channels or downspouts.
Solutions:
Remove visible debris with hands or wet/dry vacuum
Flush channels with water from a hose
Use a plumber's snake for stubborn downspout clogs
Install leaf guards on drainage openings if clogs recur
Trim nearby trees to reduce leaf fall on the roof
HVAC performance issues
Symptoms: System runs constantly, uneven temperatures, unusual noises, higher energy bills.
Causes: Dirty filters, refrigerant leaks, dirty coils, thermostat problems, duct leaks.
Solutions:
Replace air filter immediately if dirty
Clean or replace return air grilles
Check thermostat settings and batteries
Schedule professional service for refrigerant or coil issues
Seal any visible duct gaps with aluminum tape
When to call professionals
Some maintenance tasks need trained technicians. Attempting them yourself can cause more damage or create safety hazards.
Tasks that require professionals
Electrical work: Any repairs to wiring, outlets, circuit breakers, or the main panel must be done by a licensed electrician
HVAC refrigerant handling: Adding or removing refrigerant requires EPA certification (in the US) or equivalent local licensing
Structural repairs: Welding, replacing shell panels, or modifying the frame needs factory-trained technicians
Major plumbing work: Replacing pipes, water heater work, or septic system maintenance requires a licensed plumber
Roof access work: Any task requiring walking on the roof should use proper fall protection equipment
Our support services
When you buy from us, you're not alone. We provide:
Warranty coverage: Structural warranty for 5 years, systems warranty for 2 years, covering manufacturing defects
Technical support: Phone and email support for troubleshooting and maintenance questions
Parts supply: Replacement parts available through our distribution network
Certified technician network: We can connect you with trained technicians in your region for repairs
Annual inspection service: Some regions offer scheduled professional inspections
For warranty claims or to find a certified technician, contact our team with your unit's serial number and details of the issue.
Explore our space capsule house models
Whether you need a compact unit for a single person or a larger model for a family, we have options designed for durability and comfort.
Our M-series space capsule house line offers models from 18m² to 38m², ideal for individual use, small businesses, or remote accommodations. These units feature our standard insulation package and are popular for tourism and hospitality applications.
For larger spaces, the Y-series provides 40m² to 60m² of living area. These models work well for permanent residences, with upgraded HVAC systems and optional second-story configurations.
Looking for a premium experience? Our Apple Cabin pods combine modern aesthetics with enhanced soundproofing, making them ideal for urban installations or locations where visual appeal matters.
All our models share the same aluminum construction, waterproof design, and 20-25 year expected lifespan. The maintenance principles in this guide apply to every unit we manufacture.
Questions about which model fits your needs, or need help with maintenance for an existing unit? contact our team and we'll be happy to help.
Frequently asked questions
How long does a space capsule house last?
With proper maintenance, a space capsule house can last 20-25 years. Our units feature aluminum alloy shells that resist corrosion, polyurethane foam insulation that maintains structural integrity, and components rated for extreme weather conditions. Regular inspections and timely repairs extend this lifespan further.
Can a space capsule house withstand heavy rain and snow?
Yes. Our space capsule houses are engineered to handle rain loads up to 200mm/hour and snow loads of 1.5kN/m². The aluminum shell has welded seams and rubber gaskets at all openings. However, checking drainage channels after storms and clearing roof snow when it exceeds 30cm helps maintain this protection.
Is a space capsule house suitable for winter living?
Absolutely. Our units operate in temperatures as low as -30°C when equipped with our standard insulation package (100mm polyurethane foam, R-value 6.5). The HVAC system maintains 20-24°C indoor temperature even in harsh conditions. You just need to follow winter preparation steps: check seals, service the heating system, and verify insulation integrity before cold weather arrives.
How often should I clean the exterior of my space capsule house?
Clean the aluminum exterior every 3-6 months in normal conditions, or monthly in coastal areas with salt spray. Use mild detergent and soft brushes. Avoid abrasive pads or strong acids that damage the powder coating. Inspect for scratches and touch them up within 30 days to prevent corrosion.
What should I check before the rainy season?
Inspect all window and door seals, clear roof drainage channels, check pipe joint sealants, and verify that the foundation allows water runoff. Test the waterproofing by spraying water on joints with a garden hose. Address any leaks immediately, as small gaps let in moisture that can damage insulation and electrical systems.
Do space capsule houses require professional maintenance?
Basic cleaning and visual inspections can be done by owners. However, electrical system checks, HVAC servicing, and structural repairs need qualified technicians. We recommend professional inspections annually for electrical systems and every 2 years for the overall structure. Our support team can arrange certified technicians for warranty-covered repairs.
How do I prevent condensation inside my space capsule house?
Condensation occurs when indoor humidity exceeds 60% in cold weather. Run the built-in ventilation system daily for at least 30 minutes. Use a dehumidifier in winter if needed. Check that bathroom and kitchen exhaust fans work properly. Inspect vapor barriers behind wall panels annually for gaps or tears.