Cost to Install Attic Stairs - PRO $647 DIY $220 Cost to Install a Furnace Humidifier - PRO $415 DIY $215 Cost to Replace a Medicine Cabinet - PRO $392 DIY $290 Cost to Install Ceiling Tiles - PRO $728 DIY $295 Cost to Paint a Room - PRO $1874 DIY $175 Cost to Hang Wallpaper - PRO $797 DIY $175 Cost to Unclog a Tub Drain - PRO $128 DIY $28 Cost to Install a Tankless Water Heater - PRO $1100 DIY $750 Cost to Refinish a Hardwood Floor - PRO $805 DIY $225 Cost to Install Carpeting - PRO $741 DIY $500 Cost to Replace a Bathroom Faucet - PRO $304 DIY $170 Cost to Install Attic Insulation - PRO $1374 DIY $980 Cost to Cover Basement Columns - PRO $380 DIY $230 Cost to Install a Garage Door Opener - PRO $421 DIY $210 Cost to Install a Sump Pump - PRO $424 DIY $175 Cost to Install a Hands-free Kitchen Faucet - PRO $600 DIY $350 Cost to Install a Push Pull Rotate Lock - PRO $160 DIY $60