My home is uncomfortable
Let's fix those hot and cold spots
Common comfort problems and fixes
Most comfort issues come down to one of these four culprits. Identifying yours is the first step.
Drafts and air leaks
Cold air coming in around windows, doors, or outlets? Air sealing is usually the fastest fix.
Typical fix:
Seal gaps with caulk, weatherstripping, or spray foam. Focus on attic hatches, recessed lights, and electrical boxes.
Cold rooms in winter
Some rooms much colder than others? Usually caused by inadequate insulation or duct issues.
Typical fix:
Check insulation levels, especially in rooms above garages or next to exterior walls. Inspect ductwork for leaks.
Hot rooms in summer
Upstairs rooms that won't cool down? Often caused by attic heat gain or undersized AC.
Typical fix:
Add attic insulation and radiant barrier. Check if AC is properly sized. Consider mini-splits for hot zones.
Humidity problems
House feels muggy in summer or too dry in winter? HVAC and ventilation both play a role.
Typical fix:
Ensure AC is properly sized (oversized units don't dehumidify well). Consider whole-house dehumidifiers or ERVs.
How to diagnose your issue
Before you call a contractor or buy anything, do this quick assessment.
Map the problem areas
Walk through your home and note which rooms have issues. Is it consistent (always cold) or variable (only on certain days)?
Check the obvious culprits
Inspect windows and doors for visible gaps. Feel around electrical outlets on exterior walls. Check if vents are open and unblocked.
Look at your insulation
Can you access your attic? Check insulation depth—most homes need at least R-38 (10-14 inches of loose-fill). Uneven or compressed insulation is a red flag.
Evaluate your HVAC
When was it last serviced? Is the filter clean? Are there rooms far from the unit? Age and condition of equipment matters.
Recommended action sequence
Fix things in this order for best results. Sealing and insulating first means your HVAC doesn't have to work as hard.
1. Air sealing (DIY or pro)
Seal gaps and cracks that let outside air in. Focus on attic, basement, and around windows/doors. This alone often solves draft complaints.
2. Insulation improvements
Add insulation where it's missing or thin—attic is usually the highest-impact area. Consider walls and floors over unconditioned spaces.
3. Duct sealing and balancing
Leaky or poorly designed ducts can make some rooms way hotter or colder than others. A pro can test and seal ducts, adjust dampers, or add returns.
4. HVAC upgrade (if needed)
If your system is old or undersized, replacement makes sense—but only after addressing envelope issues. You may be able to downsize the new system.
Ready to prioritize your projects?
Use our Upgrade Timing tool to see which improvements make the most impact for your situation.