411homerepair.com

How to Install a Programmable Thermostat

by Guest Post on Dec 13, 2011

Do It Yourself or Hire a Pro for your New Digital Thermostat

If you hire a professional, they will charge you $100-$125 to remove your old thermostat and install a new one. You can cut your costs in half or more with a little electric know-how and a couple of hours.

Be sure to write down the number and wire type that is attached to your old thermostat. If it is connected to thin wires coming directly out of the wall, then they are low voltage and do not present a shock hazard. If the thermostat is connected to an electrical box, it is likely running off a 120-volt current and you should contact a licensed electrician.

Step by Step Installing a New Digital Thermostat

1. Turn the power off.

Turn off the power to the furnace and central air conditioner unit by shutting off the circuit breaker or removing the fuse at the service panel.

2. Remove the old thermostat cover.

Without disconnecting any wires, remove the thermostat cover from the mounting plate (see image above).

3. Remove the mounting plate.

Unscrew and remove the old thermostat's mounting plate from the wall.

4. Label the existing wires.

The old thermostat will have a letter identifying each wire. Attach a label (included with your new thermostat) to each wire that corresponds to the letter on the old thermostat. If no labels are provided, use masking tape (see image, left).

5. Disconnect the wires.

Once the wires are marked, disconnect them from the screw terminals. To keep the wires from falling back into the wall, wrap them around a pencil. If you discover an old paint color behind the mounting plate, make sure that the new thermostat will cover up the mismatched paint. If it doesn't, repaint the wall before you install the new thermostat.

6. Prep the thermostat base.

Thread the wires through the base of the new thermostat. Be sure that the base sits flush against the wall and that none of the wires are trapped behind it. Place a torpedo level on top of the base and adjust the base until it's perfectly level. Use a sharp pencil to mark the center of the mounting plate's screw holes.

7. Drill the mounting holes.

Remove the base and drill a 3/16-inch-diameter hole at each screw location.

When you drill holes to mount the new thermostat, hold a vacuum cleaner hose up against the wall to catch the drywall dust.

8. Attach the base to the wall.

Use a hammer to gently tap plastic anchors into the holes. Reposition the thermostat over the anchors. Thread the wires through the base of the new thermostat and insert the mounting screws (see image, left).

9. Level the base and tighten it to the wall.

Use the torpedo level again to ensure that the base is still level. Once level, tighten the mounting screws.

10. Connect the wires.

If necessary, use a wire stripper to remove about 1/4 inch of plastic insulation from the ends of the wires. Connect the wires to the screw terminals, matching the masking-tape labels to the letters on the terminals. Also, consult the wiring diagram in the installation manual to make sure everything is properly hooked up.

11. Turn on the power.

Turn the electricity back on, then follow the thermostat's manual to program the unit. Finally, run a test in both the auto and manual modes to confirm that the furnace and air conditioner go on and off, as directed by the thermostat settings.

Hiring a professional may find it too small of a job to install one thermostat, however, if you call around you should be able to find someone. You can always stock-pile your small electrical jobs into a larger one for a pro to take care of too.

Latest Articles

10 Concrete Patio Ideas on a Budget

A concrete patio can be a game-changer for your outdoor space. It is durable, versatile, and can be customized to fit your style. But what if you...

on Mar 25, 2025

Tips for Creating a Stunning Personalized Photo on Canvas

Order the unique beauty of a personalized photo on canvas and bring your memories to life. With a customized photo on canvas, you can transform...

on Mar 7, 2025

Best Areas to Buy Property in Singapore for Long-Term Growth

Singapore's real estate market remains one of the most stable and lucrative in the world. With limited land supply, strong governmental...

on Feb 18, 2025

Troubleshooting Excess Water in Your HVAC Secondary Condensate Drain Pan

When maintaining your air conditioning system, it is easy to overlook the condensate drain pan - until excess water starts pooling in places where...

on Jan 12, 2025

Real Estate Investment Trusts (REITs): A Beginners Guide

By combining the advantages of stock market and real estate investing, Real Estate Investment Trusts, or REITs, offer an alluring investment...

on Dec 19, 2024

Sponsored Articles

Actions

More DIY Articles

7 Decor Tips to Make Your Home Look Luxurious

Your home is your sanctuary. And it should look as luxurious as you want to feel. There are tons of ways you can make your home luxurious without...

Interior Design / Decor

Tis the Season: Home Improvements to Help with the Holidays

For many people, the hustle and bustle of the holidays leave little time to truly sit back and enjoy them. Yet by preparing now and transforming...

Improvements / Remodeling

Quick Response to Leak Detection and Restoration Saves Your Home

Damage to property by water can be devastating. It can all happen so quickly that protecting personal belongings can be difficult. A faulty pipe or...

Plumbing / Basements

The 10 Fastest Growing Trees You Should Know

Are you having an idea of keeping a full blooming tree in your front yard or backyard where you can spend some idyllic time in the noon or mornings...

Garden / Landscaping / Patio

Quick Steps to Deal with Plumbing Emergencies

Plumbing emergencies can happen anytime and one must be prepared to deal with it. The first step is to prevent the flow of water and that has to be...

Plumbing / Basements

Contact Us | Submit Article | 411homerepair © 2025