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Air Conditioning Basics
Learn why cooling performance changes, what airflow does, and which warning signs deserve attention.
Read cooling tips →Free HVAC education for homeowners
Stay comfortable.
Stay informed.
Stay ahead.
Helping homeowners stay ahead of HVAC maintenance. Simple, practical guidance to understand your heating and cooling system and know when to call a professional.
Comfort starts with know-how
HOME72°COMFORT
Small maintenance habits can make a big difference.
Learning center
HVAC made easier to understand
No confusing jargon. Just useful information to help you care for the equipment that keeps your home comfortable.
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Heating Essentials
Understand furnace and heat pump care, seasonal preparation, and common heating concerns.
Read heating tips →🛠️
Preventative Maintenance
Build a simple routine for filters, vents, outdoor equipment, and professional inspections.
See the checklist →Start here
Your simple homeowner maintenance checklist
These low-risk checks help you spot issues early. Always follow your equipment manual and leave electrical, refrigerant, gas, and internal repairs to qualified technicians.
Every month
Check the air filter
Inspect it regularly and replace or clean it according to the filter and equipment instructions. Frequency depends on your home and system.
Every season
Keep vents unobstructed
Make sure supply and return grilles aren't blocked by furniture, rugs, or stored items.
Before cooling season
Look around the outdoor unit
Clear loose leaves and nearby clutter without opening the unit or touching electrical components.
Before heating season
Schedule professional service
Have a qualified HVAC technician inspect and service your system as recommended by its manufacturer.
Quick guide · Cooling
What to check when your AC isn't cooling
Start with the thermostat settings, a visibly dirty filter, and blocked supply or return vents. If the system still isn't cooling, is leaking, icing up, or making unusual noises, contact a qualified HVAC technician. Don't open equipment panels or handle refrigerant.
Quick guide · Heating
Prepare your home for heating season
Check thermostat operation, inspect the filter, and make sure vents are open and unobstructed. Test carbon monoxide alarms according to manufacturer instructions. If you smell gas, leave the area immediately and contact your gas utility or emergency services from a safe location.
Common questions
Homeowner HVAC FAQs
How often should I change my HVAC filter?
There is no universal schedule. Check it monthly at first, then follow the filter and equipment manufacturer's guidance. Pets, dust, occupancy, and filter type can change how often it needs attention.
Do I need professional HVAC maintenance?
Professional maintenance helps identify wear, performance issues, and safety concerns that homeowner checks cannot address. Follow your system manufacturer's service recommendations.
Is AirKeepUp an HVAC repair company?
AirKeepUp is currently an independent educational resource for homeowners. The information here is general guidance, not a substitute for professional inspection or service.