It may seem like extra work, but taking the time to remove the A/C unit from your window prevents cold air from sneaking through cracks. If you can't manage to remove it, invest in a heavy tarp to cover the unit during the winter.
Related: Bob Vila's 10 "Must Do" Projects for December
Lux Products TX9600TS Univ... $45.80
Grizzly Tarps 8 x 10 Feet ... $4.60
Dap 18001 Kwik Seal Caulk ... $0.98
7876400 Alloy 42-Inch Gun ... $60.97
Norton 47735 Multisand San... $3.12
J5 Tactical V1-Pro Flashli... $5.96
BLACK+DECKER LDX120C 20-Vo... $49.99
Custom Leathercraft 125M H... $9.37
Splash Ice Melt, Snow Ice... $15.89
WORX 18-Inch 15.0 Amp Elec... $92.00
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