Thinking about upgrading to a water-efficient toilet but worried about installation costs? Good news – with some basic DIY skills and the right approach, you can install one yourself and start saving on your water bills immediately. Water-efficient toilets use significantly less water per flush (some as little as 4.5 litres compared to older models using 11+ litres), making them both eco-friendly and budget-friendly.

What You'll Need

Adjustable wrench
Screwdriver (flathead and/or Phillips)
Putty knife
Level
Sponge and towels
Bucket
New wax ring
Water supply line (if current one is old)
Caulk (optional)

Step-by-Step Installation Process

1. Preparation is Key

Before you start, clear the bathroom area and shut off the water supply valve behind the toilet. Flush the old toilet to remove most water, then use a sponge to soak up any remaining water in the tank and bowl. This prevents messy spills when you remove the old unit.

2. Remove the Old Toilet

Disconnect the water supply line using your adjustable wrench, then unscrew the nuts holding the toilet to the floor. Gently rock the toilet back and forth to break the seal, then lift it straight up. Be prepared for some residual water – keep that bucket handy! Scrape off the old wax ring from the flange (the pipe fitting on the floor) using your putty knife.

3. Install the New Wax Ring

Place a new wax ring firmly on the flange or on the underside of your new toilet (follow the manufacturer's instructions). This creates the watertight seal that prevents leaks – it's like putting a fresh gasket in place.

4. Set Your New Water-Efficient Toilet

Carefully lower the new toilet onto the flange, aligning the mounting bolts through the holes in the base. Press down firmly to compress the wax ring – your body weight helps create a proper seal.

5. Secure and Connect

Add washers and nuts to the mounting bolts, tightening them evenly but not too tight (overtightening can crack porcelain). Reconnect the water supply line and slowly turn the water back on. Let the tank fill while you watch for any leaks around the base and connections.

6. Test and Finish

Flush several times to test for leaks and ensure everything works properly. Use your level to check that the toilet sits evenly. Optionally, you can caulk around the base for extra stability and to prevent moisture from seeping underneath.

Pro Tips for Success

Wear gloves to protect your hands from bacteria and wax
Check the floor flange for cracks or damage before installing
Consider dual-flush models for maximum water savings
Plan ahead for disposing of your old toilet

Final Takeaway

Installing a water-efficient toilet is a manageable DIY project that can save you hundreds of dollars in installation costs and significantly reduce your water bills. With proper preparation and careful attention to creating a good seal, you'll have a professional-looking installation that benefits both your wallet and the environment. Remember – if you encounter any major issues like a damaged floor flange, it might be time to call in a professional plumber.

How to Install a Water-Efficient Toilet: A DIY Guide for Homeowners