Dear Jim: I don’t want the hassle of always opening a screen door, but I like natural ventilation. Are there additional screening options that would work on a standard door? – Eric R.

Dear Eric: Having fresh air gently flowing into your house in the spring and fall is refreshing and healthier for most people without allergies. Indoor air can often be more polluted from synthetic building materials, furniture, carpeting, paint, cleaning chemicals, etc. and less healthy than outdoor air.

If your budget is somewhat flexible, don’t write off installing a screen/storm door. Some attractive, decorative screen doors are available, but they will cost more than the typical low-cost, flimsy ones you see on sale at home center stores. These high-quality wrought iron screen/storm doors also increase energy efficiency and security.

There are several alternative methods to add screening to your front door. One is a retractable screen. I installed a retractable kit on my own double front doors about five years ago and it still works well. When the screen is retracted into a small box, it almost looks like part of the door frame and is barely noticeable.

For a single door, a kit costs several hundred dollars. It is not difficult to install a kit yourself, but professional installation often is also available. Some manufacturers sell only through local dealers and not for do-it-yourself installation so make sure to research the installation options.

Most retractable door screens are similar in design. They use a vertical 1.75-inch square box which is attached to one side of the door opening on the outside. The lightweight box is made of rust-free aluminum and is available in many common colors. I painted mine to match the door moldings and house trim. Some also have a narrow track mounted across the bottom for extra stability.

When the durable screen is retracted for someone to walk through the door, it rolls up inside of this box. An adjustable torsion spring built inside of the box pulls the screen in when open. The spring tension also keeps it smooth and taut when the screen is closed over the door. A magnetic strip is attached to the screen metal edge strip.

Another narrow aluminum channel is mounted vertically on the other side of the door opening. There is a matching magnetic strip in this channel so the screen edge sticks securely to it when the screen is pulled over the door. A simple tool is used to adjust the spring tension make it easy to operate, yet taut.

Horizontal thin track channels are mounted top and bottom in which the screen edges slide. Even though these kits use very durable screening, look for ones with a reinforcing vinyl strip molded into the top and bottom screen edges to reduce wear. This is where the screen edges slide in the channels when the screen is opened and closed.

A lower-cost (starting at about $50) screening option is a removable Bug Off Screen. It has two screen panels which hang from a spring-loaded rod. Adhesive-backed hook-and-loop strips attach the sides to the door frame. Magnetic pieces hold the center edges together. It is easy to open and walk through, but it does not seal as completely as a retractable screen.

The following companies offer retractable screens: Alco Ventures, (855) 488-7655, www.miragescreensystems.com; Bug Off Screen, (888) 342-5270, www.bugoffscreen.com; Dreamscreens, (888) 282-4678, www.dreamscreens.ca; and Phantom Screens, (855) 374-1025, www.phantomscreens.com.

Dear Jim: I have trouble getting enough heated air to a back bedroom. I plan to install a fan in that duct to force more air to that room. What is the easiest method to get the fan to switch on and off? – Angela H.

Dear Angela: Your problem is a common one. Before installing a duct fan, try to adjust all the duct dampers to get more heat in that room. You may have to close the dampers to other room quite a lot to feel the effect.

Use a sail switch to get electricity to the duct fan. It installs in the duct near the furnace and is plugged into an electric wall outlet. When the furnace blower starts, the air flow moves the sail which switches on the fan.

Send inquiries to James Dulley, Newspaper Name, 6906 Royalgreen Dr., Cincinnati, OH 45244 or visit www.dulley.com.