It may not be the most fashionable tip, but window insulation film can keep up to 70% of your heat from leaking out of windows. Cost: $20 to $35 per kit.
Custom Leathercraft 125M H... $9.52
Honeywell RTH2300B1012/E1 ... $16.75
Dap 18001 Kwik Seal Caulk ... $1.18
AmazonBasics Microfiber Cl... $14.81
Lasko 754200 Ceramic Heate... $26.99
Newborn 930-GTD Drip-Free ... $10.49
Hampton Bay Hugger 52 In. ... $44.99
Thermwell Products SP50 Fi... $4.00
Koch Industries Twisted Po... $6.34
Hausbell 7W Ultra Bright M... $6.99
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