With limited stock varying by ZIP code, Home Depot offers the Honeywell 7-Day Universal Touchscreen Programmable Thermostat for $39. Choose in-store pickup to avoid the $79 delivery fee. That's tied with our mention from two weeks ago and the lowest price we could find now by $41. It works with conventional and heat pump systems up to 2H/2C and offers separate programming for each day of the week (up to four periods per day).