Ask This Old House TV // Season 8 // Episode 17

Ask TOH | Ductless Air Conditioner, Mystery Leak

Plumbing and heating expert Richard Trethewey heads to Tampa, Florida to help a homeowner cool off his garage workshop with a ductless air conditioning system. Then Richard, along with landscaping contractor Roger Cook, host Kevin O'Connor, and general contractor Tom Silva ask, "What is it?" Afterward, Tom helps a homeowner eliminate a mysterious leak in her living room ceiling.

Installing a Ductless Air Conditioner in a Garage Workshop
Richard traveled to Tampa, Florida to help a homeowner find a cooling solution for his garage. The homeowner used the garage as a workshop in the summer months, but said that it was too hot and humid in there to work comfortably. To solve the problem, Richard and local expert David Zimmerman installed a "mini-split" air conditioner. The system uses no ductwork. Instead, an air-handler unit is mounted inside on a wall, and the condenser unit is mounted outside.

Where to Find It?
Richard and a local expert installed a ductless "mini-split" air conditioner in a garage workshop.

Manufacturer: Mitsubishi Electric (model "Mr. Slim")
HVAC Advanced Products Division

Installer: David Zimmerman
Zimmerman's Air Conditioning & Heating, Inc.
1013 Greenbriar Drive
Brandon, FL 33511

Additional assistance was provided by:
Ryan Hansen, electrician
Hansen Electric, Inc.

What Is It?
The guys try to guess the intended purpose of an unusual-looking product.

Where to find it?
Roger showed a flexible paper towel rack that attaches to metal surfaces using magnets. It was manufactured by:

This unit may be discontinued, but similar models are available.

Eliminating a Mysterious Leak
Tom helped a homeowner eliminate a mysterious leak that was causing damage to the plaster ceiling in her downstairs office. He determined that rainwater was getting inside the wall from upstairs, through a gap between an exterior window and the vinyl siding. To stop the leak, Tom used a polymer-based caulking designed for exterior applications, filling all gaps between the window trim and siding.

Tom used a high-tech caulking specifically made for exterior roofing and siding applications.

Manufacturer: GeoCel Corp.

Ladders and staging planks were supplied by:

Lynn Ladder & Scaffolding Co., Inc.

Viewer Tips
Tom and Kevin shared a viewer tip that makes it easier to cope crown molding using painter's masking tape.

Where to Find It?
Painter's masking tape and coping saws are available at home centers and hardware stores.

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