Dear Jim: Our old master-bathroom toilet does not flush well. We are thinking about adding a first-floor half bath. What are the best types of toilets to get for each room, and which ones save the most water? — Connie H.

Dear Connie: You probably can repair your old toilet yourself so it works better, but it would be better to just install a new water-saving model. Flushing toilets typically account for 30 percent of the water usage for a family making it, by far, the greatest single water usage appliance.

Depending on how old your master bathroom toilet is, it may use either 3.5 or 5.0 gpf (gallons per flush). The average family can save up to $100 per year in water costs by installing water-saving toilets. I recently replaced an old toilet with a 1.6 gpf toilet that cost less than $60 at Home Depot. This can provide a payback in less than one year.

The federal standard for new toilets is a maximum of 1.6 gpf. Many of the new toilets now use only 1.28 gpf, and some are as low as 1.1 gpf.

With the new internal water flow designs, they flush effectively with these smaller amounts of water. There are techniques and kits to reduce water usage for old toilets, but they sometimes require double-flushes for solid wastes.

A standard gravity-type 1.28- or 1.6-gpf toilet would be your best choice for your master bathroom. They flush effectively and are reasonably quiet. Two-piece (tank and bowl) models are usually less expensive than more stylish one-piece models. They are also easier to handle in two pieces. The only drawback is the gap between the two pieces is harder to keep clean.

There are dual-flush gravity models available that use either 1.1- or 1.6-gpf for liquids or solids respectively. On some, you push the handle up or down, depending upon the flush volume needed. On others, there is a dual-push button on top of the tank. Both are equally effective.

For your new first-floor half bathroom, consider installing a pressure-assist model. The incoming water compresses air in an internal tank. This compressed air creates a forceful, rapid flush. These are common in a public restroom. The flush is louder than with a gravity model, which should not be a problem on the first floor.

If you have several men in your family, consider installing a small wall-mounted urinal in the new half bathroom. It uses less than 1.0 gpf. Some collapse into the wall and are hidden when not used.

If your house is built on a slab or you’re putting a toilet in a basement, it can be difficult to install the drain. In this case, use a macerating toilet that grinds up the wastes and pumps them upward to an existing drain. These toilets are expensive, but less costly than installing a new drain.

The following companies offer water-saving toilets: American Standard, (800) 442-1902, www.americanstandard-us.com; Briggs Plumbing, (800) 888-4458, www.briggsplumbing.com; Kohler, (800) 456-4537, www.kohler.com; and Saniflo, (800) 571-8191, www.saniflo.com; and Toto, (888) 295-8134, www.totousa.com.

Dear Jim: I thought about installing a fiberglass insulation kit on my garage door. It has a one-half horsepower opener and the door has torsion springs. Will an insulation kit be too heavy for the opener? — Steve W.

Dear Steve: People often think the opener motor has to be powerful enough to lift the garage door. Actually, the torsion counterbalance springs should almost support the total weight of the door. The motor just moves it up and down.

An insulation kit with fiberglass batts or panels is not very heavy, so it should not be a problem. The torsion springs may have to be cranked just a little tighter, but mostly likely not.

Send inquiries to James Dulley, The Press of Atlantic City, 6906 Royalgreen Drive, Cincinnati, OH 45244 or visit www.dulley.com.